acspecific.m4
上传用户:xiejiait
上传日期:2007-01-06
资源大小:881k
文件大小:82k
- dnl Macros that test for specific features.
- dnl This file is part of Autoconf.
- dnl Copyright (C) 1992, 93, 94, 95, 96, 1998 Free Software Foundation, Inc.
- dnl
- dnl This program is free software; you can redistribute it and/or modify
- dnl it under the terms of the GNU General Public License as published by
- dnl the Free Software Foundation; either version 2, or (at your option)
- dnl any later version.
- dnl
- dnl This program is distributed in the hope that it will be useful,
- dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
- dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- dnl GNU General Public License for more details.
- dnl
- dnl You should have received a copy of the GNU General Public License
- dnl along with this program; if not, write to the Free Software
- dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- dnl 02111-1307, USA.
- dnl
- dnl As a special exception, the Free Software Foundation gives unlimited
- dnl permission to copy, distribute and modify the configure scripts that
- dnl are the output of Autoconf. You need not follow the terms of the GNU
- dnl General Public License when using or distributing such scripts, even
- dnl though portions of the text of Autoconf appear in them. The GNU
- dnl General Public License (GPL) does govern all other use of the material
- dnl that constitutes the Autoconf program.
- dnl
- dnl Certain portions of the Autoconf source text are designed to be copied
- dnl (in certain cases, depending on the input) into the output of
- dnl Autoconf. We call these the "data" portions. The rest of the Autoconf
- dnl source text consists of comments plus executable code that decides which
- dnl of the data portions to output in any given case. We call these
- dnl comments and executable code the "non-data" portions. Autoconf never
- dnl copies any of the non-data portions into its output.
- dnl
- dnl This special exception to the GPL applies to versions of Autoconf
- dnl released by the Free Software Foundation. When you make and
- dnl distribute a modified version of Autoconf, you may extend this special
- dnl exception to the GPL to apply to your modified version as well, *unless*
- dnl your modified version has the potential to copy into its output some
- dnl of the text that was the non-data portion of the version that you started
- dnl with. (In other words, unless your change moves or copies text from
- dnl the non-data portions to the data portions.) If your modification has
- dnl such potential, you must delete any notice of this special exception
- dnl to the GPL from your modified version.
- dnl
- dnl Written by David MacKenzie, with help from
- dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
- dnl Roland McGrath, Noah Friedman, david d zuhn, and many others.
- dnl ### Checks for programs
- dnl Check whether to use -n, c, or newline-tab to separate
- dnl checking messages from result messages.
- dnl Idea borrowed from dist 3.0.
- dnl Internal use only.
- AC_DEFUN(AC_PROG_ECHO_N,
- [if (echo "testingc"; echo 1,2,3) | grep c >/dev/null; then
- # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
- if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
- ac_n= ac_c='
- ' ac_t=' '
- else
- ac_n=-n ac_c= ac_t=
- fi
- else
- ac_n= ac_c='c' ac_t=
- fi
- ])
- AC_DEFUN(AC_PROG_CC,
- [AC_BEFORE([$0], [AC_PROG_CPP])dnl
- AC_CHECK_PROG(CC, gcc, gcc)
- if test -z "$CC"; then
- AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
- if test -z "$CC"; then
- case "`uname -s`" in
- *win32* | *WIN32*)
- AC_CHECK_PROG(CC, cl, cl) ;;
- esac
- fi
- test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in $PATH])
- fi
- AC_PROG_CC_WORKS
- AC_PROG_CC_GNU
- if test $ac_cv_prog_gcc = yes; then
- GCC=yes
- else
- GCC=
- fi
- dnl Check whether -g works, even if CFLAGS is set, in case the package
- dnl plays around with CFLAGS (such as to build both debugging and
- dnl normal versions of a library), tasteless as that idea is.
- ac_test_CFLAGS="${CFLAGS+set}"
- ac_save_CFLAGS="$CFLAGS"
- CFLAGS=
- AC_PROG_CC_G
- if test "$ac_test_CFLAGS" = set; then
- CFLAGS="$ac_save_CFLAGS"
- elif test $ac_cv_prog_cc_g = yes; then
- if test "$GCC" = yes; then
- CFLAGS="-g -O2"
- else
- CFLAGS="-g"
- fi
- else
- if test "$GCC" = yes; then
- CFLAGS="-O2"
- else
- CFLAGS=
- fi
- fi
- ])
- AC_DEFUN(AC_PROG_CXX,
- [AC_BEFORE([$0], [AC_PROG_CXXCPP])dnl
- AC_CHECK_PROGS(CXX, $CCC c++ g++ gcc CC cxx cc++ cl, gcc)
- AC_PROG_CXX_WORKS
- AC_PROG_CXX_GNU
- if test $ac_cv_prog_gxx = yes; then
- GXX=yes
- else
- GXX=
- fi
- dnl Check whether -g works, even if CXXFLAGS is set, in case the package
- dnl plays around with CXXFLAGS (such as to build both debugging and
- dnl normal versions of a library), tasteless as that idea is.
- ac_test_CXXFLAGS="${CXXFLAGS+set}"
- ac_save_CXXFLAGS="$CXXFLAGS"
- CXXFLAGS=
- AC_PROG_CXX_G
- if test "$ac_test_CXXFLAGS" = set; then
- CXXFLAGS="$ac_save_CXXFLAGS"
- elif test $ac_cv_prog_cxx_g = yes; then
- if test "$GXX" = yes; then
- CXXFLAGS="-g -O2"
- else
- CXXFLAGS="-g"
- fi
- else
- if test "$GXX" = yes; then
- CXXFLAGS="-O2"
- else
- CXXFLAGS=
- fi
- fi
- ])
- dnl Determine a Fortran 77 compiler to use. If `F77' is not already set
- dnl in the environment, check for `g77', `f77' and `f2c', in that order.
- dnl Set the output variable `F77' to the name of the compiler found.
- dnl
- dnl If using `g77' (the GNU Fortran 77 compiler), then `AC_PROG_F77'
- dnl will set the shell variable `G77' to `yes', and empty otherwise. If
- dnl the output variable `FFLAGS' was not already set in the environment,
- dnl then set it to `-g -02' for `g77' (or `-O2' where `g77' does not
- dnl accept `-g'). Otherwise, set `FFLAGS' to `-g' for all other Fortran
- dnl 77 compilers.
- dnl
- dnl AC_PROG_F77()
- AC_DEFUN(AC_PROG_F77,
- [AC_BEFORE([$0], [AC_PROG_CPP])dnl
- if test -z "$F77"; then
- AC_CHECK_PROGS(F77, g77 f77 f2c)
- test -z "$F77" && AC_MSG_ERROR([no acceptable Fortran 77 compiler found in $PATH])
- fi
- AC_PROG_F77_WORKS
- AC_PROG_F77_GNU
- if test $ac_cv_prog_g77 = yes; then
- G77=yes
- dnl Check whether -g works, even if FFLAGS is set, in case the package
- dnl plays around with FFLAGS (such as to build both debugging and
- dnl normal versions of a library), tasteless as that idea is.
- ac_test_FFLAGS="${FFLAGS+set}"
- ac_save_FFLAGS="$FFLAGS"
- FFLAGS=
- AC_PROG_F77_G
- if test "$ac_test_FFLAGS" = set; then
- FFLAGS="$ac_save_FFLAGS"
- elif test $ac_cv_prog_f77_g = yes; then
- FFLAGS="-g -O2"
- else
- FFLAGS="-O2"
- fi
- else
- G77=
- test "${FFLAGS+set}" = set || FFLAGS="-g"
- fi
- ])
- AC_DEFUN(AC_PROG_CC_WORKS,
- [AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works])
- AC_LANG_SAVE
- AC_LANG_C
- AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross)
- AC_LANG_RESTORE
- AC_MSG_RESULT($ac_cv_prog_cc_works)
- if test $ac_cv_prog_cc_works = no; then
- AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.])
- fi
- AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler])
- AC_MSG_RESULT($ac_cv_prog_cc_cross)
- cross_compiling=$ac_cv_prog_cc_cross
- ])
- AC_DEFUN(AC_PROG_CXX_WORKS,
- [AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) works])
- AC_LANG_SAVE
- AC_LANG_CPLUSPLUS
- AC_TRY_COMPILER([int main(){return(0);}], ac_cv_prog_cxx_works, ac_cv_prog_cxx_cross)
- AC_LANG_RESTORE
- AC_MSG_RESULT($ac_cv_prog_cxx_works)
- if test $ac_cv_prog_cxx_works = no; then
- AC_MSG_ERROR([installation or configuration problem: C++ compiler cannot create executables.])
- fi
- AC_MSG_CHECKING([whether the C++ compiler ($CXX $CXXFLAGS $LDFLAGS) is a cross-compiler])
- AC_MSG_RESULT($ac_cv_prog_cxx_cross)
- cross_compiling=$ac_cv_prog_cxx_cross
- ])
- dnl Test whether the Fortran 77 compiler can compile and link a trivial
- dnl Fortran program. Also, test whether the Fortran 77 compiler is a
- dnl cross-compiler (which may realistically be the case if the Fortran
- dnl compiler is `g77').
- dnl
- dnl AC_PROG_F77_WORKS()
- AC_DEFUN(AC_PROG_F77_WORKS,
- [AC_MSG_CHECKING([whether the Fortran 77 compiler ($F77 $FFLAGS $LDFLAGS) works])
- AC_LANG_SAVE
- AC_LANG_FORTRAN77
- AC_TRY_COMPILER(dnl
- [ program conftest
- end
- ], ac_cv_prog_f77_works, ac_cv_prog_f77_cross)
- AC_LANG_RESTORE
- AC_MSG_RESULT($ac_cv_prog_f77_works)
- if test $ac_cv_prog_f77_works = no; then
- AC_MSG_ERROR([installation or configuration problem: Fortran 77 compiler cannot create executables.])
- fi
- AC_MSG_CHECKING([whether the Fortran 77 compiler ($F77 $FFLAGS $LDFLAGS) is a cross-compiler])
- AC_MSG_RESULT($ac_cv_prog_f77_cross)
- cross_compiling=$ac_cv_prog_f77_cross
- ])
- AC_DEFUN(AC_PROG_CC_GNU,
- [AC_CACHE_CHECK(whether we are using GNU C, ac_cv_prog_gcc,
- [dnl The semicolon is to pacify NeXT's syntax-checking cpp.
- cat > conftest.c <<EOF
- #ifdef __GNUC__
- yes;
- #endif
- EOF
- if AC_TRY_COMMAND(${CC-cc} -E conftest.c) | egrep yes >/dev/null 2>&1; then
- ac_cv_prog_gcc=yes
- else
- ac_cv_prog_gcc=no
- fi])])
- AC_DEFUN(AC_PROG_CXX_GNU,
- [AC_CACHE_CHECK(whether we are using GNU C++, ac_cv_prog_gxx,
- [dnl The semicolon is to pacify NeXT's syntax-checking cpp.
- cat > conftest.C <<EOF
- #ifdef __GNUC__
- yes;
- #endif
- EOF
- if AC_TRY_COMMAND(${CXX-g++} -E conftest.C) | egrep yes >/dev/null 2>&1; then
- ac_cv_prog_gxx=yes
- else
- ac_cv_prog_gxx=no
- fi])])
- dnl Test whether for Fortran 77 compiler is `g77' (the GNU Fortran 77
- dnl Compiler). This test depends on whether the Fortran 77 compiler can
- dnl do CPP pre-processing.
- dnl
- dnl AC_PROG_F77_GNU()
- AC_DEFUN(AC_PROG_F77_GNU,
- [AC_CACHE_CHECK(whether we are using GNU Fortran 77, ac_cv_prog_g77,
- [cat > conftest.fpp <<EOF
- #ifdef __GNUC__
- yes
- #endif
- EOF
- if AC_TRY_COMMAND($F77 -E conftest.fpp) | egrep yes >/dev/null 2>&1; then
- ac_cv_prog_g77=yes
- else
- ac_cv_prog_g77=no
- fi])])
- AC_DEFUN(AC_PROG_CC_G,
- [AC_CACHE_CHECK(whether ${CC-cc} accepts -g, ac_cv_prog_cc_g,
- [echo 'void f(){}' > conftest.c
- if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
- ac_cv_prog_cc_g=yes
- else
- ac_cv_prog_cc_g=no
- fi
- rm -f conftest*
- ])])
- AC_DEFUN(AC_PROG_CXX_G,
- [AC_CACHE_CHECK(whether ${CXX-g++} accepts -g, ac_cv_prog_cxx_g,
- [echo 'void f(){}' > conftest.cc
- if test -z "`${CXX-g++} -g -c conftest.cc 2>&1`"; then
- ac_cv_prog_cxx_g=yes
- else
- ac_cv_prog_cxx_g=no
- fi
- rm -f conftest*
- ])])
- dnl Test whether the Fortran 77 compiler can accept the `-g' option to
- dnl enable debugging.
- dnl
- dnl AC_PROG_F77_G()
- AC_DEFUN(AC_PROG_F77_G,
- [AC_CACHE_CHECK(whether $F77 accepts -g, ac_cv_prog_f77_g,
- [cat > conftest.f << EOF
- program conftest
- end
- EOF
- if test -z "`$F77 -g -c conftest.f 2>&1`"; then
- ac_cv_prog_f77_g=yes
- else
- ac_cv_prog_f77_g=no
- fi
- rm -f conftest*
- ])])
- AC_DEFUN(AC_PROG_GCC_TRADITIONAL,
- [AC_REQUIRE([AC_PROG_CC])dnl
- AC_REQUIRE([AC_PROG_CPP])dnl
- if test $ac_cv_prog_gcc = yes; then
- AC_CACHE_CHECK(whether ${CC-cc} needs -traditional,
- ac_cv_prog_gcc_traditional,
- [ ac_pattern="Autoconf.*'x'"
- AC_EGREP_CPP($ac_pattern, [#include <sgtty.h>
- Autoconf TIOCGETP],
- ac_cv_prog_gcc_traditional=yes, ac_cv_prog_gcc_traditional=no)
- if test $ac_cv_prog_gcc_traditional = no; then
- AC_EGREP_CPP($ac_pattern, [#include <termio.h>
- Autoconf TCGETA],
- ac_cv_prog_gcc_traditional=yes)
- fi])
- if test $ac_cv_prog_gcc_traditional = yes; then
- CC="$CC -traditional"
- fi
- fi
- ])
- AC_DEFUN(AC_PROG_CC_C_O,
- [if test "x$CC" != xcc; then
- AC_MSG_CHECKING(whether $CC and cc understand -c and -o together)
- else
- AC_MSG_CHECKING(whether cc understands -c and -o together)
- fi
- set dummy $CC; ac_cc="`echo [$]2 |
- changequote(, )dnl
- sed -e 's/[^a-zA-Z0-9_]/_/g' -e 's/^[0-9]/_/'`"
- changequote([, ])dnl
- AC_CACHE_VAL(ac_cv_prog_cc_${ac_cc}_c_o,
- [echo 'foo(){}' > conftest.c
- # Make sure it works both with $CC and with simple cc.
- # We do the test twice because some compilers refuse to overwrite an
- # existing .o file with -o, though they will create one.
- ac_try='${CC-cc} -c conftest.c -o conftest.o 1>&AC_FD_CC'
- if AC_TRY_EVAL(ac_try) &&
- test -f conftest.o && AC_TRY_EVAL(ac_try);
- then
- eval ac_cv_prog_cc_${ac_cc}_c_o=yes
- if test "x$CC" != xcc; then
- # Test first that cc exists at all.
- if AC_TRY_COMMAND(cc -c conftest.c 1>&AC_FD_CC); then
- ac_try='cc -c conftest.c -o conftest.o 1>&AC_FD_CC'
- if AC_TRY_EVAL(ac_try) &&
- test -f conftest.o && AC_TRY_EVAL(ac_try);
- then
- # cc works too.
- :
- else
- # cc exists but doesn't like -o.
- eval ac_cv_prog_cc_${ac_cc}_c_o=no
- fi
- fi
- fi
- else
- eval ac_cv_prog_cc_${ac_cc}_c_o=no
- fi
- rm -f conftest*
- ])dnl
- if eval "test "`echo '$ac_cv_prog_cc_'${ac_cc}_c_o`" = yes"; then
- AC_MSG_RESULT(yes)
- else
- AC_MSG_RESULT(no)
- AC_DEFINE(NO_MINUS_C_MINUS_O)
- fi
- ])
- dnl Test if the Fortran 77 compiler accepts the options `-c' and `-o'
- dnl simultaneously, and define `F77_NO_MINUS_C_MINUS_O' if it does not.
- dnl
- dnl The usefulness of this macro is questionable, as I can't really see
- dnl why anyone would use it. The only reason I include it is for
- dnl completeness, since a similar test exists for the C compiler.
- dnl
- dnl AC_PROG_F77_C_O
- AC_DEFUN(AC_PROG_F77_C_O,
- [AC_BEFORE([$0], [AC_PROG_F77])dnl
- AC_MSG_CHECKING(whether $F77 understand -c and -o together)
- set dummy $F77; ac_f77="`echo [$]2 |
- changequote(, )dnl
- sed -e 's/[^a-zA-Z0-9_]/_/g' -e 's/^[0-9]/_/'`"
- changequote([, ])dnl
- AC_CACHE_VAL(ac_cv_prog_f77_${ac_f77}_c_o,
- [cat > conftest.f << EOF
- program conftest
- end
- EOF
- # We do the `AC_TRY_EVAL' test twice because some compilers refuse to
- # overwrite an existing `.o' file with `-o', although they will create
- # one.
- ac_try='$F77 $FFLAGS -c conftest.f -o conftest.o 1>&AC_FD_CC'
- if AC_TRY_EVAL(ac_try) && test -f conftest.o && AC_TRY_EVAL(ac_try); then
- eval ac_cv_prog_f77_${ac_f77}_c_o=yes
- else
- eval ac_cv_prog_f77_${ac_f77}_c_o=no
- fi
- rm -f conftest*
- ])dnl
- if eval "test "`echo '$ac_cv_prog_f77_'${ac_f77}_c_o`" = yes"; then
- AC_MSG_RESULT(yes)
- else
- AC_MSG_RESULT(no)
- AC_DEFINE(F77_NO_MINUS_C_MINUS_O)
- fi
- ])
- dnl Define SET_MAKE to set ${MAKE} if make doesn't.
- AC_DEFUN(AC_PROG_MAKE_SET,
- [AC_MSG_CHECKING(whether ${MAKE-make} sets ${MAKE})
- set dummy ${MAKE-make}; ac_make=`echo "[$]2" | sed 'y%./+-%__p_%'`
- AC_CACHE_VAL(ac_cv_prog_make_${ac_make}_set,
- [cat > conftestmake <<EOF
- all:
- @echo 'ac_maketemp="${MAKE}"'
- EOF
- changequote(, )dnl
- # GNU make sometimes prints "make[1]: Entering...", which would confuse us.
- eval `${MAKE-make} -f conftestmake 2>/dev/null | grep temp=`
- changequote([, ])dnl
- if test -n "$ac_maketemp"; then
- eval ac_cv_prog_make_${ac_make}_set=yes
- else
- eval ac_cv_prog_make_${ac_make}_set=no
- fi
- rm -f conftestmake])dnl
- if eval "test "`echo '$ac_cv_prog_make_'${ac_make}_set`" = yes"; then
- AC_MSG_RESULT(yes)
- SET_MAKE=
- else
- AC_MSG_RESULT(no)
- SET_MAKE="MAKE=${MAKE-make}"
- fi
- AC_SUBST([SET_MAKE])dnl
- ])
- AC_DEFUN(AC_PROG_RANLIB,
- [AC_CHECK_PROG(RANLIB, ranlib, ranlib, :)])
- dnl Check for mawk first since it's generally faster.
- AC_DEFUN(AC_PROG_AWK,
- [AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )])
- AC_DEFUN(AC_PROG_YACC,
- [AC_CHECK_PROGS(YACC, 'bison -y' byacc, yacc)])
- AC_DEFUN(AC_PROG_CPP,
- [AC_MSG_CHECKING(how to run the C preprocessor)
- # On Suns, sometimes $CPP names a directory.
- if test -n "$CPP" && test -d "$CPP"; then
- CPP=
- fi
- if test -z "$CPP"; then
- AC_CACHE_VAL(ac_cv_prog_CPP,
- [ # This must be in double quotes, not single quotes, because CPP may get
- # substituted into the Makefile and "${CC-cc}" will confuse make.
- CPP="${CC-cc} -E"
- # On the NeXT, cc -E runs the code through the compiler's parser,
- # not just through cpp.
- dnl Use a header file that comes with gcc, so configuring glibc
- dnl with a fresh cross-compiler works.
- AC_TRY_CPP([#include <assert.h>
- Syntax Error], ,
- CPP="${CC-cc} -E -traditional-cpp"
- AC_TRY_CPP([#include <assert.h>
- Syntax Error], ,
- CPP="${CC-cc} -nologo -E"
- AC_TRY_CPP([#include <assert.h>
- Syntax Error], , CPP=/lib/cpp)))
- ac_cv_prog_CPP="$CPP"])dnl
- CPP="$ac_cv_prog_CPP"
- else
- ac_cv_prog_CPP="$CPP"
- fi
- AC_MSG_RESULT($CPP)
- AC_SUBST(CPP)dnl
- ])
- AC_DEFUN(AC_PROG_CXXCPP,
- [AC_MSG_CHECKING(how to run the C++ preprocessor)
- if test -z "$CXXCPP"; then
- AC_CACHE_VAL(ac_cv_prog_CXXCPP,
- [AC_LANG_SAVE[]dnl
- AC_LANG_CPLUSPLUS[]dnl
- CXXCPP="${CXX-g++} -E"
- AC_TRY_CPP([#include <stdlib.h>], , CXXCPP=/lib/cpp)
- ac_cv_prog_CXXCPP="$CXXCPP"
- AC_LANG_RESTORE[]dnl
- fi])dnl
- CXXCPP="$ac_cv_prog_CXXCPP"
- AC_MSG_RESULT($CXXCPP)
- AC_SUBST(CXXCPP)dnl
- ])
- dnl Require finding the C or C++ preprocessor, whichever is the
- dnl current language.
- AC_DEFUN(AC_REQUIRE_CPP,
- [ifelse(AC_LANG, C, [AC_REQUIRE([AC_PROG_CPP])], [AC_REQUIRE([AC_PROG_CXXCPP])])])
- AC_DEFUN(AC_PROG_LEX,
- [AC_CHECK_PROG(LEX, flex, flex, lex)
- if test -z "$LEXLIB"
- then
- case "$LEX" in
- flex*) ac_lib=fl ;;
- *) ac_lib=l ;;
- esac
- AC_CHECK_LIB($ac_lib, yywrap, LEXLIB="-l$ac_lib")
- fi
- AC_SUBST(LEXLIB)])
- dnl Check if lex declares yytext as a char * by default, not a char[].
- undefine([AC_DECL_YYTEXT])
- AC_DEFUN(AC_DECL_YYTEXT,
- [AC_REQUIRE_CPP()dnl
- AC_REQUIRE([AC_PROG_LEX])dnl
- AC_CACHE_CHECK(lex output file root, ac_cv_prog_lex_root,
- [# The minimal lex program is just a single line: %%. But some broken lexes
- # (Solaris, I think it was) want two %% lines, so accommodate them.
- echo '%%
- %%' | $LEX
- if test -f lex.yy.c; then
- ac_cv_prog_lex_root=lex.yy
- elif test -f lexyy.c; then
- ac_cv_prog_lex_root=lexyy
- else
- AC_MSG_ERROR(cannot find output from $LEX; giving up)
- fi])
- LEX_OUTPUT_ROOT=$ac_cv_prog_lex_root
- AC_SUBST(LEX_OUTPUT_ROOT)dnl
- AC_CACHE_CHECK(whether yytext is a pointer, ac_cv_prog_lex_yytext_pointer,
- [# POSIX says lex can declare yytext either as a pointer or an array; the
- # default is implementation-dependent. Figure out which it is, since
- # not all implementations provide the %pointer and %array declarations.
- ac_cv_prog_lex_yytext_pointer=no
- echo 'extern char *yytext;' >>$LEX_OUTPUT_ROOT.c
- ac_save_LIBS="$LIBS"
- LIBS="$LIBS $LEXLIB"
- AC_TRY_LINK(`cat $LEX_OUTPUT_ROOT.c`, , ac_cv_prog_lex_yytext_pointer=yes)
- LIBS="$ac_save_LIBS"
- rm -f "${LEX_OUTPUT_ROOT}.c"
- ])
- dnl
- if test $ac_cv_prog_lex_yytext_pointer = yes; then
- AC_DEFINE(YYTEXT_POINTER)
- fi
- ])
- AC_DEFUN(AC_PROG_INSTALL,
- [AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
- # Find a good install program. We prefer a C program (faster),
- # so one script is as good as another. But avoid the broken or
- # incompatible versions:
- # SysV /etc/install, /usr/sbin/install
- # SunOS /usr/etc/install
- # IRIX /sbin/install
- # AIX /bin/install
- # AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
- # AFS /usr/afsws/bin/install, which mishandles nonexistent args
- # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
- # ./install, which can be erroneously created by make from ./install.sh.
- AC_MSG_CHECKING(for a BSD compatible install)
- if test -z "$INSTALL"; then
- AC_CACHE_VAL(ac_cv_path_install,
- [ IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS=":"
- for ac_dir in $PATH; do
- # Account for people who put trailing slashes in PATH elements.
- case "$ac_dir/" in
- /|./|.//|/etc/*|/usr/sbin/*|/usr/etc/*|/sbin/*|/usr/afsws/bin/*|/usr/ucb/*) ;;
- *)
- # OSF1 and SCO ODT 3.0 have their own names for install.
- # Don't use installbsd from OSF since it installs stuff as root
- # by default.
- for ac_prog in ginstall scoinst install; do
- if test -f $ac_dir/$ac_prog; then
- if test $ac_prog = install &&
- grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then
- # AIX install. It has an incompatible calling convention.
- :
- else
- ac_cv_path_install="$ac_dir/$ac_prog -c"
- break 2
- fi
- fi
- done
- ;;
- esac
- done
- IFS="$ac_save_IFS"
- ])dnl
- if test "${ac_cv_path_install+set}" = set; then
- INSTALL="$ac_cv_path_install"
- else
- # As a last resort, use the slow shell script. We don't cache a
- # path for INSTALL within a source directory, because that will
- # break other packages using the cache if that directory is
- # removed, or if the path is relative.
- INSTALL="$ac_install_sh"
- fi
- fi
- dnl We do special magic for INSTALL instead of AC_SUBST, to get
- dnl relative paths right.
- AC_MSG_RESULT($INSTALL)
- # Use test -z because SunOS4 sh mishandles braces in ${var-val}.
- # It thinks the first close brace ends the variable substitution.
- test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
- AC_SUBST(INSTALL_PROGRAM)dnl
- test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}'
- AC_SUBST(INSTALL_SCRIPT)dnl
- test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
- AC_SUBST(INSTALL_DATA)dnl
- ])
- AC_DEFUN(AC_PROG_LN_S,
- [AC_MSG_CHECKING(whether ln -s works)
- AC_CACHE_VAL(ac_cv_prog_LN_S,
- [rm -f conftestdata
- if ln -s X conftestdata 2>/dev/null
- then
- rm -f conftestdata
- ac_cv_prog_LN_S="ln -s"
- else
- ac_cv_prog_LN_S=ln
- fi])dnl
- LN_S="$ac_cv_prog_LN_S"
- if test "$ac_cv_prog_LN_S" = "ln -s"; then
- AC_MSG_RESULT(yes)
- else
- AC_MSG_RESULT(no)
- fi
- AC_SUBST(LN_S)dnl
- ])
- define(AC_RSH,
- [errprint(__file__:__line__: [$0] has been removed; replace it with equivalent code
- )m4exit(4)])
- dnl ### Checks for header files
- AC_DEFUN(AC_HEADER_STDC,
- [AC_REQUIRE_CPP()dnl
- AC_CACHE_CHECK(for ANSI C header files, ac_cv_header_stdc,
- [AC_TRY_CPP([#include <stdlib.h>
- #include <stdarg.h>
- #include <string.h>
- #include <float.h>], ac_cv_header_stdc=yes, ac_cv_header_stdc=no)
- if test $ac_cv_header_stdc = yes; then
- # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
- AC_EGREP_HEADER(memchr, string.h, , ac_cv_header_stdc=no)
- fi
- if test $ac_cv_header_stdc = yes; then
- # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
- AC_EGREP_HEADER(free, stdlib.h, , ac_cv_header_stdc=no)
- fi
- if test $ac_cv_header_stdc = yes; then
- # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
- AC_TRY_RUN([#include <ctype.h>
- #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
- #define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
- #define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
- int main () { int i; for (i = 0; i < 256; i++)
- if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
- exit (0); }
- ], , ac_cv_header_stdc=no, :)
- fi])
- if test $ac_cv_header_stdc = yes; then
- AC_DEFINE(STDC_HEADERS)
- fi
- ])
- AC_DEFUN(AC_UNISTD_H,
- [AC_OBSOLETE([$0], [; instead use AC_CHECK_HEADERS(unistd.h)])dnl
- AC_CHECK_HEADER(unistd.h, AC_DEFINE(HAVE_UNISTD_H))])
- AC_DEFUN(AC_USG,
- [AC_OBSOLETE([$0],
- [; instead use AC_CHECK_HEADERS(string.h) and HAVE_STRING_H])dnl
- AC_MSG_CHECKING([for BSD string and memory functions])
- AC_TRY_LINK([#include <strings.h>], [rindex(0, 0); bzero(0, 0);],
- [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no); AC_DEFINE(USG)])])
- dnl If memchr and the like aren't declared in <string.h>, include <memory.h>.
- dnl To avoid problems, don't check for gcc2 built-ins.
- AC_DEFUN(AC_MEMORY_H,
- [AC_OBSOLETE([$0], [; instead use AC_CHECK_HEADERS(memory.h) and HAVE_MEMORY_H])dnl
- AC_MSG_CHECKING(whether string.h declares mem functions)
- AC_EGREP_HEADER(memchr, string.h, ac_found=yes, ac_found=no)
- AC_MSG_RESULT($ac_found)
- if test $ac_found = no; then
- AC_CHECK_HEADER(memory.h, [AC_DEFINE(NEED_MEMORY_H)])
- fi
- ])
- AC_DEFUN(AC_HEADER_MAJOR,
- [AC_CACHE_CHECK(whether sys/types.h defines makedev,
- ac_cv_header_sys_types_h_makedev,
- [AC_TRY_LINK([#include <sys/types.h>], [return makedev(0, 0);],
- ac_cv_header_sys_types_h_makedev=yes, ac_cv_header_sys_types_h_makedev=no)
- ])
- if test $ac_cv_header_sys_types_h_makedev = no; then
- AC_CHECK_HEADER(sys/mkdev.h, [AC_DEFINE(MAJOR_IN_MKDEV)])
- if test $ac_cv_header_sys_mkdev_h = no; then
- AC_CHECK_HEADER(sys/sysmacros.h, [AC_DEFINE(MAJOR_IN_SYSMACROS)])
- fi
- fi
- ])
- AC_DEFUN(AC_HEADER_DIRENT,
- [ac_header_dirent=no
- AC_CHECK_HEADERS_DIRENT(dirent.h sys/ndir.h sys/dir.h ndir.h,
- [ac_header_dirent=$ac_hdr; break])
- # Two versions of opendir et al. are in -ldir and -lx on SCO Xenix.
- if test $ac_header_dirent = dirent.h; then
- AC_CHECK_LIB(dir, opendir, LIBS="$LIBS -ldir")
- else
- AC_CHECK_LIB(x, opendir, LIBS="$LIBS -lx")
- fi
- ])
- dnl Like AC_CHECK_HEADER, except also make sure that HEADER-FILE
- dnl defines the type `DIR'. dirent.h on NextStep 3.2 doesn't.
- dnl AC_CHECK_HEADER_DIRENT(HEADER-FILE, ACTION-IF-FOUND)
- AC_DEFUN(AC_CHECK_HEADER_DIRENT,
- [ac_safe=`echo "$1" | sed 'y%./+-%__p_%'`
- AC_MSG_CHECKING([for $1 that defines DIR])
- AC_CACHE_VAL(ac_cv_header_dirent_$ac_safe,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <$1>], [DIR *dirp = 0;],
- eval "ac_cv_header_dirent_$ac_safe=yes",
- eval "ac_cv_header_dirent_$ac_safe=no")])dnl
- if eval "test "`echo '$ac_cv_header_dirent_'$ac_safe`" = yes"; then
- AC_MSG_RESULT(yes)
- $2
- else
- AC_MSG_RESULT(no)
- fi
- ])
- dnl Like AC_CHECK_HEADERS, except succeed only for a HEADER-FILE that
- dnl defines `DIR'.
- dnl AC_CHECK_HEADERS_DIRENT(HEADER-FILE... [, ACTION])
- define(AC_CHECK_HEADERS_DIRENT,
- [for ac_hdr in $1
- do
- AC_CHECK_HEADER_DIRENT($ac_hdr,
- [changequote(, )dnl
- ac_tr_hdr=HAVE_`echo $ac_hdr | sed 'y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%'`
- changequote([, ])dnl
- AC_DEFINE_UNQUOTED($ac_tr_hdr) $2])dnl
- done])
- AC_DEFUN(AC_DIR_HEADER,
- [AC_OBSOLETE([$0], [; instead use AC_HEADER_DIRENT])dnl
- ac_header_dirent=no
- for ac_hdr in dirent.h sys/ndir.h sys/dir.h ndir.h; do
- AC_CHECK_HEADER_DIRENT($ac_hdr, [ac_header_dirent=$ac_hdr; break])
- done
- case "$ac_header_dirent" in
- dirent.h) AC_DEFINE(DIRENT) ;;
- sys/ndir.h) AC_DEFINE(SYSNDIR) ;;
- sys/dir.h) AC_DEFINE(SYSDIR) ;;
- ndir.h) AC_DEFINE(NDIR) ;;
- esac
- AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
- [AC_TRY_RUN([#include <sys/types.h>
- #include <$ac_header_dirent>
- int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
- ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes, ac_cv_func_closedir_void=yes)])
- if test $ac_cv_func_closedir_void = yes; then
- AC_DEFINE(VOID_CLOSEDIR)
- fi
- ])
- AC_DEFUN(AC_HEADER_STAT,
- [AC_CACHE_CHECK(whether stat file-mode macros are broken,
- ac_cv_header_stat_broken,
- [AC_EGREP_CPP([You lose], [#include <sys/types.h>
- #include <sys/stat.h>
- #if defined(S_ISBLK) && defined(S_IFDIR)
- # if S_ISBLK (S_IFDIR)
- You lose.
- # endif
- #endif
- #if defined(S_ISBLK) && defined(S_IFCHR)
- # if S_ISBLK (S_IFCHR)
- You lose.
- # endif
- #endif
- #if defined(S_ISLNK) && defined(S_IFREG)
- # if S_ISLNK (S_IFREG)
- You lose.
- # endif
- #endif
- #if defined(S_ISSOCK) && defined(S_IFREG)
- # if S_ISSOCK (S_IFREG)
- You lose.
- # endif
- #endif
- ], ac_cv_header_stat_broken=yes, ac_cv_header_stat_broken=no)])
- if test $ac_cv_header_stat_broken = yes; then
- AC_DEFINE(STAT_MACROS_BROKEN)
- fi
- ])
- AC_DEFUN(AC_DECL_SYS_SIGLIST,
- [AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h],
- ac_cv_decl_sys_siglist,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <signal.h>
- /* NetBSD declares sys_siglist in unistd.h. */
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif], [char *msg = *(sys_siglist + 1);],
- ac_cv_decl_sys_siglist=yes, ac_cv_decl_sys_siglist=no)])
- if test $ac_cv_decl_sys_siglist = yes; then
- AC_DEFINE(SYS_SIGLIST_DECLARED)
- fi
- ])
- AC_DEFUN(AC_HEADER_SYS_WAIT,
- [AC_CACHE_CHECK([for sys/wait.h that is POSIX.1 compatible],
- ac_cv_header_sys_wait_h,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/wait.h>
- #ifndef WEXITSTATUS
- #define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
- #endif
- #ifndef WIFEXITED
- #define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
- #endif], [int s;
- wait (&s);
- s = WIFEXITED (s) ? WEXITSTATUS (s) : 1;],
- ac_cv_header_sys_wait_h=yes, ac_cv_header_sys_wait_h=no)])
- if test $ac_cv_header_sys_wait_h = yes; then
- AC_DEFINE(HAVE_SYS_WAIT_H)
- fi
- ])
- dnl ### Checks for typedefs
- AC_DEFUN(AC_TYPE_GETGROUPS,
- [AC_REQUIRE([AC_TYPE_UID_T])dnl
- AC_CACHE_CHECK(type of array argument to getgroups, ac_cv_type_getgroups,
- [AC_TRY_RUN(
- changequote(<<, >>)dnl
- <<
- /* Thanks to Mike Rendell for this test. */
- #include <sys/types.h>
- #define NGID 256
- #undef MAX
- #define MAX(x, y) ((x) > (y) ? (x) : (y))
- main()
- {
- gid_t gidset[NGID];
- int i, n;
- union { gid_t gval; long lval; } val;
- val.lval = -1;
- for (i = 0; i < NGID; i++)
- gidset[i] = val.gval;
- n = getgroups (sizeof (gidset) / MAX (sizeof (int), sizeof (gid_t)) - 1,
- gidset);
- /* Exit non-zero if getgroups seems to require an array of ints. This
- happens when gid_t is short but getgroups modifies an array of ints. */
- exit ((n > 0 && gidset[n] != val.gval) ? 1 : 0);
- }
- >>,
- changequote([, ])dnl
- ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int,
- ac_cv_type_getgroups=cross)
- if test $ac_cv_type_getgroups = cross; then
- dnl When we can't run the test program (we are cross compiling), presume
- dnl that <unistd.h> has either an accurate prototype for getgroups or none.
- dnl Old systems without prototypes probably use int.
- AC_EGREP_HEADER([getgroups.*int.*gid_t], unistd.h,
- ac_cv_type_getgroups=gid_t, ac_cv_type_getgroups=int)
- fi])
- AC_DEFINE_UNQUOTED(GETGROUPS_T, $ac_cv_type_getgroups)
- ])
- AC_DEFUN(AC_TYPE_UID_T,
- [AC_CACHE_CHECK(for uid_t in sys/types.h, ac_cv_type_uid_t,
- [AC_EGREP_HEADER(uid_t, sys/types.h,
- ac_cv_type_uid_t=yes, ac_cv_type_uid_t=no)])
- if test $ac_cv_type_uid_t = no; then
- AC_DEFINE(uid_t, int)
- AC_DEFINE(gid_t, int)
- fi
- ])
- AC_DEFUN(AC_TYPE_SIZE_T,
- [AC_CHECK_TYPE(size_t, unsigned)])
- AC_DEFUN(AC_TYPE_PID_T,
- [AC_CHECK_TYPE(pid_t, int)])
- AC_DEFUN(AC_TYPE_OFF_T,
- [AC_CHECK_TYPE(off_t, long)])
- AC_DEFUN(AC_TYPE_MODE_T,
- [AC_CHECK_TYPE(mode_t, int)])
- dnl Note that identifiers starting with SIG are reserved by ANSI C.
- AC_DEFUN(AC_TYPE_SIGNAL,
- [AC_CACHE_CHECK([return type of signal handlers], ac_cv_type_signal,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <signal.h>
- #ifdef signal
- #undef signal
- #endif
- #ifdef __cplusplus
- extern "C" void (*signal (int, void (*)(int)))(int);
- #else
- void (*signal ()) ();
- #endif
- ],
- [int i;], ac_cv_type_signal=void, ac_cv_type_signal=int)])
- AC_DEFINE_UNQUOTED(RETSIGTYPE, $ac_cv_type_signal)
- ])
- dnl ### Checks for functions
- AC_DEFUN(AC_FUNC_CLOSEDIR_VOID,
- [AC_REQUIRE([AC_HEADER_DIRENT])dnl
- AC_CACHE_CHECK(whether closedir returns void, ac_cv_func_closedir_void,
- [AC_TRY_RUN([#include <sys/types.h>
- #include <$ac_header_dirent>
- int closedir(); main() { exit(closedir(opendir(".")) != 0); }],
- ac_cv_func_closedir_void=no, ac_cv_func_closedir_void=yes, ac_cv_func_closedir_void=yes)])
- if test $ac_cv_func_closedir_void = yes; then
- AC_DEFINE(CLOSEDIR_VOID)
- fi
- ])
- AC_DEFUN(AC_FUNC_FNMATCH,
- [AC_CACHE_CHECK(for working fnmatch, ac_cv_func_fnmatch_works,
- # Some versions of Solaris or SCO have a broken fnmatch function.
- # So we run a test program. If we are cross-compiling, take no chance.
- # Thanks to John Oleynick and Franc,ois Pinard for this test.
- [AC_TRY_RUN([main() { exit (fnmatch ("a*", "abc", 0) != 0); }],
- ac_cv_func_fnmatch_works=yes, ac_cv_func_fnmatch_works=no,
- ac_cv_func_fnmatch_works=no)])
- if test $ac_cv_func_fnmatch_works = yes; then
- AC_DEFINE(HAVE_FNMATCH)
- fi
- ])
- AC_DEFUN(AC_FUNC_MMAP,
- [AC_CHECK_HEADERS(unistd.h)
- AC_CHECK_FUNCS(getpagesize)
- AC_CACHE_CHECK(for working mmap, ac_cv_func_mmap_fixed_mapped,
- [AC_TRY_RUN([
- /* Thanks to Mike Haertel and Jim Avera for this test.
- Here is a matrix of mmap possibilities:
- mmap private not fixed
- mmap private fixed at somewhere currently unmapped
- mmap private fixed at somewhere already mapped
- mmap shared not fixed
- mmap shared fixed at somewhere currently unmapped
- mmap shared fixed at somewhere already mapped
- For private mappings, we should verify that changes cannot be read()
- back from the file, nor mmap's back from the file at a different
- address. (There have been systems where private was not correctly
- implemented like the infamous i386 svr4.0, and systems where the
- VM page cache was not coherent with the filesystem buffer cache
- like early versions of FreeBSD and possibly contemporary NetBSD.)
- For shared mappings, we should conversely verify that changes get
- propogated back to all the places they're supposed to be.
- Grep wants private fixed already mapped.
- The main things grep needs to know about mmap are:
- * does it exist and is it safe to write into the mmap'd area
- * how to use it (BSD variants) */
- #include <sys/types.h>
- #include <fcntl.h>
- #include <sys/mman.h>
- /* This mess was copied from the GNU getpagesize.h. */
- #ifndef HAVE_GETPAGESIZE
- # ifdef HAVE_UNISTD_H
- # include <unistd.h>
- # endif
- /* Assume that all systems that can run configure have sys/param.h. */
- # ifndef HAVE_SYS_PARAM_H
- # define HAVE_SYS_PARAM_H 1
- # endif
- # ifdef _SC_PAGESIZE
- # define getpagesize() sysconf(_SC_PAGESIZE)
- # else /* no _SC_PAGESIZE */
- # ifdef HAVE_SYS_PARAM_H
- # include <sys/param.h>
- # ifdef EXEC_PAGESIZE
- # define getpagesize() EXEC_PAGESIZE
- # else /* no EXEC_PAGESIZE */
- # ifdef NBPG
- # define getpagesize() NBPG * CLSIZE
- # ifndef CLSIZE
- # define CLSIZE 1
- # endif /* no CLSIZE */
- # else /* no NBPG */
- # ifdef NBPC
- # define getpagesize() NBPC
- # else /* no NBPC */
- # ifdef PAGESIZE
- # define getpagesize() PAGESIZE
- # endif /* PAGESIZE */
- # endif /* no NBPC */
- # endif /* no NBPG */
- # endif /* no EXEC_PAGESIZE */
- # else /* no HAVE_SYS_PARAM_H */
- # define getpagesize() 8192 /* punt totally */
- # endif /* no HAVE_SYS_PARAM_H */
- # endif /* no _SC_PAGESIZE */
- #endif /* no HAVE_GETPAGESIZE */
- #ifdef __cplusplus
- extern "C" { void *malloc(unsigned); }
- #else
- char *malloc();
- #endif
- int
- main()
- {
- char *data, *data2, *data3;
- int i, pagesize;
- int fd;
- pagesize = getpagesize();
- /*
- * First, make a file with some known garbage in it.
- */
- data = malloc(pagesize);
- if (!data)
- exit(1);
- for (i = 0; i < pagesize; ++i)
- *(data + i) = rand();
- umask(0);
- fd = creat("conftestmmap", 0600);
- if (fd < 0)
- exit(1);
- if (write(fd, data, pagesize) != pagesize)
- exit(1);
- close(fd);
- /*
- * Next, try to mmap the file at a fixed address which
- * already has something else allocated at it. If we can,
- * also make sure that we see the same garbage.
- */
- fd = open("conftestmmap", O_RDWR);
- if (fd < 0)
- exit(1);
- data2 = malloc(2 * pagesize);
- if (!data2)
- exit(1);
- data2 += (pagesize - ((int) data2 & (pagesize - 1))) & (pagesize - 1);
- if (data2 != mmap(data2, pagesize, PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_FIXED, fd, 0L))
- exit(1);
- for (i = 0; i < pagesize; ++i)
- if (*(data + i) != *(data2 + i))
- exit(1);
- /*
- * Finally, make sure that changes to the mapped area
- * do not percolate back to the file as seen by read().
- * (This is a bug on some variants of i386 svr4.0.)
- */
- for (i = 0; i < pagesize; ++i)
- *(data2 + i) = *(data2 + i) + 1;
- data3 = malloc(pagesize);
- if (!data3)
- exit(1);
- if (read(fd, data3, pagesize) != pagesize)
- exit(1);
- for (i = 0; i < pagesize; ++i)
- if (*(data + i) != *(data3 + i))
- exit(1);
- close(fd);
- unlink("conftestmmap");
- exit(0);
- }
- ], ac_cv_func_mmap_fixed_mapped=yes, ac_cv_func_mmap_fixed_mapped=no,
- ac_cv_func_mmap_fixed_mapped=no)])
- if test $ac_cv_func_mmap_fixed_mapped = yes; then
- AC_DEFINE(HAVE_MMAP)
- fi
- ])
- AC_DEFUN(AC_FUNC_GETPGRP,
- [AC_CACHE_CHECK(whether getpgrp takes no argument, ac_cv_func_getpgrp_void,
- [AC_TRY_RUN([
- /*
- * If this system has a BSD-style getpgrp(),
- * which takes a pid argument, exit unsuccessfully.
- *
- * Snarfed from Chet Ramey's bash pgrp.c test program
- */
- #include <stdio.h>
- #include <sys/types.h>
- int pid;
- int pg1, pg2, pg3, pg4;
- int ng, np, s, child;
- main()
- {
- pid = getpid();
- pg1 = getpgrp(0);
- pg2 = getpgrp();
- pg3 = getpgrp(pid);
- pg4 = getpgrp(1);
- /*
- * If all of these values are the same, it's pretty sure that
- * we're on a system that ignores getpgrp's first argument.
- */
- if (pg2 == pg4 && pg1 == pg3 && pg2 == pg3)
- exit(0);
- child = fork();
- if (child < 0)
- exit(1);
- else if (child == 0) {
- np = getpid();
- /*
- * If this is Sys V, this will not work; pgrp will be
- * set to np because setpgrp just changes a pgrp to be
- * the same as the pid.
- */
- setpgrp(np, pg1);
- ng = getpgrp(0); /* Same result for Sys V and BSD */
- if (ng == pg1) {
- exit(1);
- } else {
- exit(0);
- }
- } else {
- wait(&s);
- exit(s>>8);
- }
- }
- ], ac_cv_func_getpgrp_void=yes, ac_cv_func_getpgrp_void=no,
- AC_MSG_ERROR(cannot check getpgrp if cross compiling))
- ])
- if test $ac_cv_func_getpgrp_void = yes; then
- AC_DEFINE(GETPGRP_VOID)
- fi
- ])
- AC_DEFUN(AC_FUNC_SETPGRP,
- [AC_CACHE_CHECK(whether setpgrp takes no argument, ac_cv_func_setpgrp_void,
- AC_TRY_RUN([
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- /*
- * If this system has a BSD-style setpgrp, which takes arguments, exit
- * successfully.
- */
- main()
- {
- if (setpgrp(1,1) == -1)
- exit(0);
- else
- exit(1);
- }
- ], ac_cv_func_setpgrp_void=no, ac_cv_func_setpgrp_void=yes,
- AC_MSG_ERROR(cannot check setpgrp if cross compiling))
- )
- if test $ac_cv_func_setpgrp_void = yes; then
- AC_DEFINE(SETPGRP_VOID)
- fi
- ])
- AC_DEFUN(AC_FUNC_VPRINTF,
- [AC_CHECK_FUNC(vprintf, AC_DEFINE(HAVE_VPRINTF))
- if test "$ac_cv_func_vprintf" != yes; then
- AC_CHECK_FUNC(_doprnt, AC_DEFINE(HAVE_DOPRNT))
- fi
- ])
- AC_DEFUN(AC_FUNC_VFORK,
- [AC_REQUIRE([AC_TYPE_PID_T])dnl
- AC_CHECK_HEADER(vfork.h, AC_DEFINE(HAVE_VFORK_H))
- AC_CACHE_CHECK(for working vfork, ac_cv_func_vfork_works,
- [AC_TRY_RUN([/* Thanks to Paul Eggert for this test. */
- #include <stdio.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
- #ifdef HAVE_VFORK_H
- #include <vfork.h>
- #endif
- /* On some sparc systems, changes by the child to local and incoming
- argument registers are propagated back to the parent.
- The compiler is told about this with #include <vfork.h>,
- but some compilers (e.g. gcc -O) don't grok <vfork.h>.
- Test for this by using a static variable whose address
- is put into a register that is clobbered by the vfork. */
- static
- #ifdef __cplusplus
- sparc_address_test (int arg)
- #else
- sparc_address_test (arg) int arg;
- #endif
- {
- static pid_t child;
- if (!child) {
- child = vfork ();
- if (child < 0) {
- perror ("vfork");
- _exit(2);
- }
- if (!child) {
- arg = getpid();
- write(-1, "", 0);
- _exit (arg);
- }
- }
- }
- main() {
- pid_t parent = getpid ();
- pid_t child;
- sparc_address_test ();
- child = vfork ();
- if (child == 0) {
- /* Here is another test for sparc vfork register problems.
- This test uses lots of local variables, at least
- as many local variables as main has allocated so far
- including compiler temporaries. 4 locals are enough for
- gcc 1.40.3 on a Solaris 4.1.3 sparc, but we use 8 to be safe.
- A buggy compiler should reuse the register of parent
- for one of the local variables, since it will think that
- parent can't possibly be used any more in this routine.
- Assigning to the local variable will thus munge parent
- in the parent process. */
- pid_t
- p = getpid(), p1 = getpid(), p2 = getpid(), p3 = getpid(),
- p4 = getpid(), p5 = getpid(), p6 = getpid(), p7 = getpid();
- /* Convince the compiler that p..p7 are live; otherwise, it might
- use the same hardware register for all 8 local variables. */
- if (p != p1 || p != p2 || p != p3 || p != p4
- || p != p5 || p != p6 || p != p7)
- _exit(1);
- /* On some systems (e.g. IRIX 3.3),
- vfork doesn't separate parent from child file descriptors.
- If the child closes a descriptor before it execs or exits,
- this munges the parent's descriptor as well.
- Test for this by closing stdout in the child. */
- _exit(close(fileno(stdout)) != 0);
- } else {
- int status;
- struct stat st;
- while (wait(&status) != child)
- ;
- exit(
- /* Was there some problem with vforking? */
- child < 0
- /* Did the child fail? (This shouldn't happen.) */
- || status
- /* Did the vfork/compiler bug occur? */
- || parent != getpid()
- /* Did the file descriptor bug occur? */
- || fstat(fileno(stdout), &st) != 0
- );
- }
- }],
- ac_cv_func_vfork_works=yes, ac_cv_func_vfork_works=no, AC_CHECK_FUNC(vfork)
- ac_cv_func_vfork_works=$ac_cv_func_vfork)])
- if test $ac_cv_func_vfork_works = no; then
- AC_DEFINE(vfork, fork)
- fi
- ])
- AC_DEFUN(AC_FUNC_WAIT3,
- [AC_CACHE_CHECK(for wait3 that fills in rusage, ac_cv_func_wait3_rusage,
- [AC_TRY_RUN([#include <sys/types.h>
- #include <sys/time.h>
- #include <sys/resource.h>
- #include <stdio.h>
- /* HP-UX has wait3 but does not fill in rusage at all. */
- main() {
- struct rusage r;
- int i;
- /* Use a field that we can force nonzero --
- voluntary context switches.
- For systems like NeXT and OSF/1 that don't set it,
- also use the system CPU time. And page faults (I/O) for Linux. */
- r.ru_nvcsw = 0;
- r.ru_stime.tv_sec = 0;
- r.ru_stime.tv_usec = 0;
- r.ru_majflt = r.ru_minflt = 0;
- switch (fork()) {
- case 0: /* Child. */
- sleep(1); /* Give up the CPU. */
- _exit(0);
- case -1: _exit(0); /* What can we do? */
- default: /* Parent. */
- wait3(&i, 0, &r);
- sleep(2); /* Avoid "text file busy" from rm on fast HP-UX machines. */
- exit(r.ru_nvcsw == 0 && r.ru_majflt == 0 && r.ru_minflt == 0
- && r.ru_stime.tv_sec == 0 && r.ru_stime.tv_usec == 0);
- }
- }], ac_cv_func_wait3_rusage=yes, ac_cv_func_wait3_rusage=no,
- ac_cv_func_wait3_rusage=no)])
- if test $ac_cv_func_wait3_rusage = yes; then
- AC_DEFINE(HAVE_WAIT3)
- fi
- ])
- AC_DEFUN(AC_FUNC_ALLOCA,
- [AC_REQUIRE_CPP()dnl Set CPP; we run AC_EGREP_CPP conditionally.
- # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
- # for constant arguments. Useless!
- AC_CACHE_CHECK([for working alloca.h], ac_cv_header_alloca_h,
- [AC_TRY_LINK([#include <alloca.h>], [char *p = alloca(2 * sizeof(int));],
- ac_cv_header_alloca_h=yes, ac_cv_header_alloca_h=no)])
- if test $ac_cv_header_alloca_h = yes; then
- AC_DEFINE(HAVE_ALLOCA_H)
- fi
- AC_CACHE_CHECK([for alloca], ac_cv_func_alloca_works,
- [AC_TRY_LINK([
- #ifdef __GNUC__
- # define alloca __builtin_alloca
- #else
- # ifdef _MSC_VER
- # include <malloc.h>
- # define alloca _alloca
- # else
- # if HAVE_ALLOCA_H
- # include <alloca.h>
- # else
- # ifdef _AIX
- #pragma alloca
- # else
- # ifndef alloca /* predefined by HP cc +Olibcalls */
- char *alloca ();
- # endif
- # endif
- # endif
- # endif
- #endif
- ], [char *p = (char *) alloca(1);],
- ac_cv_func_alloca_works=yes, ac_cv_func_alloca_works=no)])
- if test $ac_cv_func_alloca_works = yes; then
- AC_DEFINE(HAVE_ALLOCA)
- fi
- if test $ac_cv_func_alloca_works = no; then
- # The SVR3 libPW and SVR4 libucb both contain incompatible functions
- # that cause trouble. Some versions do not even contain alloca or
- # contain a buggy version. If you still want to use their alloca,
- # use ar to extract alloca.o from them instead of compiling alloca.c.
- ALLOCA=alloca.${ac_objext}
- AC_DEFINE(C_ALLOCA)
- AC_CACHE_CHECK(whether alloca needs Cray hooks, ac_cv_os_cray,
- [AC_EGREP_CPP(webecray,
- [#if defined(CRAY) && ! defined(CRAY2)
- webecray
- #else
- wenotbecray
- #endif
- ], ac_cv_os_cray=yes, ac_cv_os_cray=no)])
- if test $ac_cv_os_cray = yes; then
- for ac_func in _getb67 GETB67 getb67; do
- AC_CHECK_FUNC($ac_func, [AC_DEFINE_UNQUOTED(CRAY_STACKSEG_END, $ac_func)
- break])
- done
- fi
- AC_CACHE_CHECK(stack direction for C alloca, ac_cv_c_stack_direction,
- [AC_TRY_RUN([find_stack_direction ()
- {
- static char *addr = 0;
- auto char dummy;
- if (addr == 0)
- {
- addr = &dummy;
- return find_stack_direction ();
- }
- else
- return (&dummy > addr) ? 1 : -1;
- }
- main ()
- {
- exit (find_stack_direction() < 0);
- }], ac_cv_c_stack_direction=1, ac_cv_c_stack_direction=-1,
- ac_cv_c_stack_direction=0)])
- AC_DEFINE_UNQUOTED(STACK_DIRECTION, $ac_cv_c_stack_direction)
- fi
- AC_SUBST(ALLOCA)dnl
- ])
- AC_DEFUN(AC_FUNC_GETLOADAVG,
- [ac_have_func=no # yes means we've found a way to get the load average.
- # Some systems with -lutil have (and need) -lkvm as well, some do not.
- # On Solaris, -lkvm requires nlist from -lelf, so check that first
- # to get the right answer into the cache.
- AC_CHECK_LIB(elf, elf_begin, LIBS="-lelf $LIBS")
- AC_CHECK_LIB(kvm, kvm_open, LIBS="-lkvm $LIBS")
- # Check for the 4.4BSD definition of getloadavg.
- AC_CHECK_LIB(util, getloadavg,
- [LIBS="-lutil $LIBS" ac_have_func=yes ac_cv_func_getloadavg_setgid=yes])
- if test $ac_have_func = no; then
- # There is a commonly available library for RS/6000 AIX.
- # Since it is not a standard part of AIX, it might be installed locally.
- ac_getloadavg_LIBS="$LIBS"; LIBS="-L/usr/local/lib $LIBS"
- AC_CHECK_LIB(getloadavg, getloadavg,
- LIBS="-lgetloadavg $LIBS", LIBS="$ac_getloadavg_LIBS")
- fi
- # Make sure it is really in the library, if we think we found it.
- AC_REPLACE_FUNCS(getloadavg)
- if test $ac_cv_func_getloadavg = yes; then
- AC_DEFINE(HAVE_GETLOADAVG)
- ac_have_func=yes
- else
- # Figure out what our getloadavg.c needs.
- ac_have_func=no
- AC_CHECK_HEADER(sys/dg_sys_info.h,
- [ac_have_func=yes; AC_DEFINE(DGUX)
- AC_CHECK_LIB(dgc, dg_sys_info)])
- # We cannot check for <dwarf.h>, because Solaris 2 does not use dwarf (it
- # uses stabs), but it is still SVR4. We cannot check for <elf.h> because
- # Irix 4.0.5F has the header but not the library.
- if test $ac_have_func = no && test $ac_cv_lib_elf_elf_begin = yes; then
- ac_have_func=yes; AC_DEFINE(SVR4)
- fi
- if test $ac_have_func = no; then
- AC_CHECK_HEADER(inq_stats/cpustats.h,
- [ac_have_func=yes; AC_DEFINE(UMAX)
- AC_DEFINE(UMAX4_3)])
- fi
- if test $ac_have_func = no; then
- AC_CHECK_HEADER(sys/cpustats.h,
- [ac_have_func=yes; AC_DEFINE(UMAX)])
- fi
- if test $ac_have_func = no; then
- AC_CHECK_HEADERS(mach/mach.h)
- fi
- AC_CHECK_HEADER(nlist.h,
- [AC_DEFINE(NLIST_STRUCT)
- AC_CACHE_CHECK([for n_un in struct nlist], ac_cv_struct_nlist_n_un,
- [AC_TRY_COMPILE([#include <nlist.h>],
- [struct nlist n; n.n_un.n_name = 0;],
- ac_cv_struct_nlist_n_un=yes, ac_cv_struct_nlist_n_un=no)])
- if test $ac_cv_struct_nlist_n_un = yes; then
- AC_DEFINE(NLIST_NAME_UNION)
- fi
- ])dnl
- fi # Do not have getloadavg in system libraries.
- # Some definitions of getloadavg require that the program be installed setgid.
- dnl FIXME Don't hardwire the path of getloadavg.c in the top-level directory.
- AC_CACHE_CHECK(whether getloadavg requires setgid,
- ac_cv_func_getloadavg_setgid,
- [AC_EGREP_CPP([Yowza Am I SETGID yet],
- [#include "$srcdir/getloadavg.c"
- #ifdef LDAV_PRIVILEGED
- Yowza Am I SETGID yet
- #endif],
- ac_cv_func_getloadavg_setgid=yes, ac_cv_func_getloadavg_setgid=no)])
- if test $ac_cv_func_getloadavg_setgid = yes; then
- NEED_SETGID=true; AC_DEFINE(GETLOADAVG_PRIVILEGED)
- else
- NEED_SETGID=false
- fi
- AC_SUBST(NEED_SETGID)dnl
- if test $ac_cv_func_getloadavg_setgid = yes; then
- AC_CACHE_CHECK(group of /dev/kmem, ac_cv_group_kmem,
- [changequote(, )dnl
- # On Solaris, /dev/kmem is a symlink. Get info on the real file.
- ac_ls_output=`ls -lgL /dev/kmem 2>/dev/null`
- # If we got an error (system does not support symlinks), try without -L.
- test -z "$ac_ls_output" && ac_ls_output=`ls -lg /dev/kmem`
- ac_cv_group_kmem=`echo $ac_ls_output
- | sed -ne 's/[ ][ ]*/ /g;
- s/^.[sSrwx-]* *[0-9]* *([^0-9]*) *.*/1/;
- / /s/.* //;p;'`
- changequote([, ])dnl
- ])
- KMEM_GROUP=$ac_cv_group_kmem
- fi
- AC_SUBST(KMEM_GROUP)dnl
- ])
- AC_DEFUN(AC_FUNC_UTIME_NULL,
- [AC_CACHE_CHECK(whether utime accepts a null argument, ac_cv_func_utime_null,
- [rm -f conftestdata; > conftestdata
- # Sequent interprets utime(file, 0) to mean use start of epoch. Wrong.
- AC_TRY_RUN([#include <sys/types.h>
- #include <sys/stat.h>
- main() {
- struct stat s, t;
- exit(!(stat ("conftestdata", &s) == 0 && utime("conftestdata", (long *)0) == 0
- && stat("conftestdata", &t) == 0 && t.st_mtime >= s.st_mtime
- && t.st_mtime - s.st_mtime < 120));
- }], ac_cv_func_utime_null=yes, ac_cv_func_utime_null=no,
- ac_cv_func_utime_null=no)
- rm -f core core.* *.core])
- if test $ac_cv_func_utime_null = yes; then
- AC_DEFINE(HAVE_UTIME_NULL)
- fi
- ])
- AC_DEFUN(AC_FUNC_STRCOLL,
- [AC_CACHE_CHECK(for working strcoll, ac_cv_func_strcoll_works,
- [AC_TRY_RUN([#include <string.h>
- main ()
- {
- exit (strcoll ("abc", "def") >= 0 ||
- strcoll ("ABC", "DEF") >= 0 ||
- strcoll ("123", "456") >= 0);
- }], ac_cv_func_strcoll_works=yes, ac_cv_func_strcoll_works=no,
- ac_cv_func_strcoll_works=no)])
- if test $ac_cv_func_strcoll_works = yes; then
- AC_DEFINE(HAVE_STRCOLL)
- fi
- ])
- AC_DEFUN(AC_FUNC_SETVBUF_REVERSED,
- [AC_CACHE_CHECK(whether setvbuf arguments are reversed,
- ac_cv_func_setvbuf_reversed,
- [AC_TRY_RUN([#include <stdio.h>
- /* If setvbuf has the reversed format, exit 0. */
- main () {
- /* This call has the arguments reversed.
- A reversed system may check and see that the address of main
- is not _IOLBF, _IONBF, or _IOFBF, and return nonzero. */
- if (setvbuf(stdout, _IOLBF, (char *) main, BUFSIZ) != 0)
- exit(1);
- putc('r', stdout);
- exit(0); /* Non-reversed systems segv here. */
- }], ac_cv_func_setvbuf_reversed=yes, ac_cv_func_setvbuf_reversed=no)
- rm -f core core.* *.core])
- if test $ac_cv_func_setvbuf_reversed = yes; then
- AC_DEFINE(SETVBUF_REVERSED)
- fi
- ])
- AC_DEFUN(AC_FUNC_GETMNTENT,
- [# getmntent is in -lsun on Irix 4, -lseq on Dynix/PTX, -lgen on Unixware.
- AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS",
- [AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS",
- [AC_CHECK_LIB(gen, getmntent, LIBS="-lgen $LIBS")])])
- AC_CHECK_FUNC(getmntent, [AC_DEFINE(HAVE_GETMNTENT)])])
- AC_DEFUN(AC_FUNC_STRFTIME,
- [AC_CHECK_FUNC(strftime, [AC_DEFINE(HAVE_STRFTIME)],
- [# strftime is in -lintl on SCO UNIX.
- AC_CHECK_LIB(intl, strftime,
- [AC_DEFINE(HAVE_STRFTIME)
- LIBS="-lintl $LIBS"])])])
- AC_DEFUN(AC_FUNC_MEMCMP,
- [AC_CACHE_CHECK(for 8-bit clean memcmp, ac_cv_func_memcmp_clean,
- [AC_TRY_RUN([
- main()
- {
- char c0 = 0x40, c1 = 0x80, c2 = 0x81;
- exit(memcmp(&c0, &c2, 1) < 0 && memcmp(&c1, &c2, 1) < 0 ? 0 : 1);
- }
- ], ac_cv_func_memcmp_clean=yes, ac_cv_func_memcmp_clean=no,
- ac_cv_func_memcmp_clean=no)])
- test $ac_cv_func_memcmp_clean = no && LIBOBJS="$LIBOBJS memcmp.${ac_objext}"
- AC_SUBST(LIBOBJS)dnl
- ])
- AC_DEFUN(AC_FUNC_SELECT_ARGTYPES,
- [AC_MSG_CHECKING([types of arguments for select()])
- AC_CACHE_VAL(ac_cv_func_select_arg234,dnl
- [AC_CACHE_VAL(ac_cv_func_select_arg1,dnl
- [AC_CACHE_VAL(ac_cv_func_select_arg5,dnl
- [for ac_cv_func_select_arg234 in 'fd_set *' 'int *' 'void *'; do
- for ac_cv_func_select_arg1 in 'int' 'size_t' 'unsigned long' 'unsigned'; do
- for ac_cv_func_select_arg5 in 'struct timeval *' 'const struct timeval *'; do
- AC_TRY_COMPILE(dnl
- [#ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifdef HAVE_SYS_TIME_H
- #include <sys/time.h>
- #endif
- #ifdef HAVE_SYS_SELECT_H
- #include <sys/select.h>
- #endif
- #ifdef HAVE_SYS_SOCKET_H
- #include <sys/socket.h>
- #endif
- extern select ($ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5);],,dnl
- [ac_not_found=no ; break 3],ac_not_found=yes)
- done
- done
- done
- ])dnl AC_CACHE_VAL
- ])dnl AC_CACHE_VAL
- ])dnl AC_CACHE_VAL
- if test "$ac_not_found" = yes; then
- ac_cv_func_select_arg1=int
- ac_cv_func_select_arg234='int *'
- ac_cv_func_select_arg5='struct timeval *'
- fi
- AC_MSG_RESULT([$ac_cv_func_select_arg1,$ac_cv_func_select_arg234,$ac_cv_func_select_arg5])
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG1,$ac_cv_func_select_arg1)
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG234,($ac_cv_func_select_arg234))
- AC_DEFINE_UNQUOTED(SELECT_TYPE_ARG5,($ac_cv_func_select_arg5))
- ])
- dnl ### Checks for structure members
- AC_DEFUN(AC_HEADER_TIME,
- [AC_CACHE_CHECK([whether time.h and sys/time.h may both be included],
- ac_cv_header_time,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/time.h>
- #include <time.h>],
- [struct tm *tp;], ac_cv_header_time=yes, ac_cv_header_time=no)])
- if test $ac_cv_header_time = yes; then
- AC_DEFINE(TIME_WITH_SYS_TIME)
- fi
- ])
- AC_DEFUN(AC_STRUCT_TM,
- [AC_CACHE_CHECK([whether struct tm is in sys/time.h or time.h],
- ac_cv_struct_tm,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <time.h>],
- [struct tm *tp; tp->tm_sec;],
- ac_cv_struct_tm=time.h, ac_cv_struct_tm=sys/time.h)])
- if test $ac_cv_struct_tm = sys/time.h; then
- AC_DEFINE(TM_IN_SYS_TIME)
- fi
- ])
- AC_DEFUN(AC_STRUCT_TIMEZONE,
- [AC_REQUIRE([AC_STRUCT_TM])dnl
- AC_CACHE_CHECK([for tm_zone in struct tm], ac_cv_struct_tm_zone,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <$ac_cv_struct_tm>], [struct tm tm; tm.tm_zone;],
- ac_cv_struct_tm_zone=yes, ac_cv_struct_tm_zone=no)])
- if test "$ac_cv_struct_tm_zone" = yes; then
- AC_DEFINE(HAVE_TM_ZONE)
- else
- AC_CACHE_CHECK(for tzname, ac_cv_var_tzname,
- [AC_TRY_LINK(
- changequote(<<, >>)dnl
- <<#include <time.h>
- #ifndef tzname /* For SGI. */
- extern char *tzname[]; /* RS6000 and others reject char **tzname. */
- #endif>>,
- changequote([, ])dnl
- [atoi(*tzname);], ac_cv_var_tzname=yes, ac_cv_var_tzname=no)])
- if test $ac_cv_var_tzname = yes; then
- AC_DEFINE(HAVE_TZNAME)
- fi
- fi
- ])
- AC_DEFUN(AC_STRUCT_ST_BLOCKS,
- [AC_CACHE_CHECK([for st_blocks in struct stat], ac_cv_struct_st_blocks,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/stat.h>], [struct stat s; s.st_blocks;],
- ac_cv_struct_st_blocks=yes, ac_cv_struct_st_blocks=no)])
- if test $ac_cv_struct_st_blocks = yes; then
- AC_DEFINE(HAVE_ST_BLOCKS)
- else
- LIBOBJS="$LIBOBJS fileblocks.${ac_objext}"
- fi
- AC_SUBST(LIBOBJS)dnl
- ])
- AC_DEFUN(AC_STRUCT_ST_BLKSIZE,
- [AC_CACHE_CHECK([for st_blksize in struct stat], ac_cv_struct_st_blksize,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/stat.h>], [struct stat s; s.st_blksize;],
- ac_cv_struct_st_blksize=yes, ac_cv_struct_st_blksize=no)])
- if test $ac_cv_struct_st_blksize = yes; then
- AC_DEFINE(HAVE_ST_BLKSIZE)
- fi
- ])
- AC_DEFUN(AC_STRUCT_ST_RDEV,
- [AC_CACHE_CHECK([for st_rdev in struct stat], ac_cv_struct_st_rdev,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/stat.h>], [struct stat s; s.st_rdev;],
- ac_cv_struct_st_rdev=yes, ac_cv_struct_st_rdev=no)])
- if test $ac_cv_struct_st_rdev = yes; then
- AC_DEFINE(HAVE_ST_RDEV)
- fi
- ])
- dnl ### Checks for compiler characteristics
- AC_DEFUN(AC_C_CROSS,
- [AC_OBSOLETE([$0], [; it has been merged into AC_PROG_CC])])
- AC_DEFUN(AC_C_CHAR_UNSIGNED,
- [AC_CACHE_CHECK(whether char is unsigned, ac_cv_c_char_unsigned,
- [if test "$GCC" = yes; then
- # GCC predefines this symbol on systems where it applies.
- AC_EGREP_CPP(yes,
- [#ifdef __CHAR_UNSIGNED__
- yes
- #endif
- ], ac_cv_c_char_unsigned=yes, ac_cv_c_char_unsigned=no)
- else
- AC_TRY_RUN(
- [/* volatile prevents gcc2 from optimizing the test away on sparcs. */
- #if !defined(__STDC__) || __STDC__ != 1
- #define volatile
- #endif
- main() {
- volatile char c = 255; exit(c < 0);
- }], ac_cv_c_char_unsigned=yes, ac_cv_c_char_unsigned=no)
- fi])
- if test $ac_cv_c_char_unsigned = yes && test "$GCC" != yes; then
- AC_DEFINE(__CHAR_UNSIGNED__)
- fi
- ])
- AC_DEFUN(AC_C_LONG_DOUBLE,
- [AC_CACHE_CHECK(for long double, ac_cv_c_long_double,
- [if test "$GCC" = yes; then
- ac_cv_c_long_double=yes
- else
- AC_TRY_RUN([int main() {
- /* The Stardent Vistra knows sizeof(long double), but does not support it. */
- long double foo = 0.0;
- /* On Ultrix 4.3 cc, long double is 4 and double is 8. */
- exit(sizeof(long double) < sizeof(double)); }],
- ac_cv_c_long_double=yes, ac_cv_c_long_double=no)
- fi])
- if test $ac_cv_c_long_double = yes; then
- AC_DEFINE(HAVE_LONG_DOUBLE)
- fi
- ])
- AC_DEFUN(AC_INT_16_BITS,
- [AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(int)])dnl
- AC_MSG_CHECKING(whether int is 16 bits)
- AC_TRY_RUN([main() { exit(sizeof(int) != 2); }],
- [AC_MSG_RESULT(yes)
- AC_DEFINE(INT_16_BITS)], AC_MSG_RESULT(no))
- ])
- AC_DEFUN(AC_LONG_64_BITS,
- [AC_OBSOLETE([$0], [; instead use AC_CHECK_SIZEOF(long)])dnl
- AC_MSG_CHECKING(whether long int is 64 bits)
- AC_TRY_RUN([main() { exit(sizeof(long int) != 8); }],
- [AC_MSG_RESULT(yes)
- AC_DEFINE(LONG_64_BITS)], AC_MSG_RESULT(no))
- ])
- AC_DEFUN(AC_C_BIGENDIAN,
- [AC_CACHE_CHECK(whether byte ordering is bigendian, ac_cv_c_bigendian,
- [ac_cv_c_bigendian=unknown
- # See if sys/param.h defines the BYTE_ORDER macro.
- AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/param.h>], [
- #if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
- bogus endian macros
- #endif], [# It does; now see whether it defined to BIG_ENDIAN or not.
- AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/param.h>], [
- #if BYTE_ORDER != BIG_ENDIAN
- not big endian
- #endif], ac_cv_c_bigendian=yes, ac_cv_c_bigendian=no)])
- if test $ac_cv_c_bigendian = unknown; then
- AC_TRY_RUN([main () {
- /* Are we little or big endian? From Harbison&Steele. */
- union
- {
- long l;
- char c[sizeof (long)];
- } u;
- u.l = 1;
- exit (u.c[sizeof (long) - 1] == 1);
- }], ac_cv_c_bigendian=no, ac_cv_c_bigendian=yes)
- fi])
- if test $ac_cv_c_bigendian = yes; then
- AC_DEFINE(WORDS_BIGENDIAN)
- fi
- ])
- dnl Do nothing if the compiler accepts the inline keyword.
- dnl Otherwise define inline to __inline__ or __inline if one of those work,
- dnl otherwise define inline to be empty.
- AC_DEFUN(AC_C_INLINE,
- [AC_CACHE_CHECK([for inline], ac_cv_c_inline,
- [ac_cv_c_inline=no
- for ac_kw in inline __inline__ __inline; do
- AC_TRY_COMPILE(, [} $ac_kw foo() {], [ac_cv_c_inline=$ac_kw; break])
- done
- ])
- case "$ac_cv_c_inline" in
- inline | yes) ;;
- no) AC_DEFINE(inline, ) ;;
- *) AC_DEFINE_UNQUOTED(inline, $ac_cv_c_inline) ;;
- esac
- ])
- AC_DEFUN(AC_C_CONST,
- [dnl This message is consistent in form with the other checking messages,
- dnl and with the result message.
- AC_CACHE_CHECK([for working const], ac_cv_c_const,
- [AC_TRY_COMPILE(,
- changequote(<<, >>)dnl
- <<
- /* Ultrix mips cc rejects this. */
- typedef int charset[2]; const charset x;
- /* SunOS 4.1.1 cc rejects this. */
- char const *const *ccp;
- char **p;
- /* NEC SVR4.0.2 mips cc rejects this. */
- struct point {int x, y;};
- static struct point const zero = {0,0};
- /* AIX XL C 1.02.0.0 rejects this.
- It does not let you subtract one const X* pointer from another in an arm
- of an if-expression whose if-part is not a constant expression */
- const char *g = "string";
- ccp = &g + (g ? g-g : 0);
- /* HPUX 7.0 cc rejects these. */
- ++ccp;
- p = (char**) ccp;
- ccp = (char const *const *) p;
- { /* SCO 3.2v4 cc rejects this. */
- char *t;
- char const *s = 0 ? (char *) 0 : (char const *) 0;
- *t++ = 0;
- }
- { /* Someone thinks the Sun supposedly-ANSI compiler will reject this. */
- int x[] = {25, 17};
- const int *foo = &x[0];
- ++foo;
- }
- { /* Sun SC1.0 ANSI compiler rejects this -- but not the above. */
- typedef const int *iptr;
- iptr p = 0;
- ++p;
- }
- { /* AIX XL C 1.02.0.0 rejects this saying
- "k.c", line 2.27: 1506-025 (S) Operand must be a modifiable lvalue. */
- struct s { int j; const int *ap[3]; };
- struct s *b; b->j = 5;
- }
- { /* ULTRIX-32 V3.1 (Rev 9) vcc rejects this */
- const int foo = 10;
- }
- >>,
- changequote([, ])dnl
- ac_cv_c_const=yes, ac_cv_c_const=no)])
- if test $ac_cv_c_const = no; then
- AC_DEFINE(const, )
- fi
- ])
- AC_DEFUN(AC_C_STRINGIZE, [
- AC_REQUIRE([AC_PROG_CPP])
- AC_MSG_CHECKING([for preprocessor stringizing operator])
- AC_CACHE_VAL(ac_cv_c_stringize,
- AC_EGREP_CPP([#teststring],[
- #define x(y) #y
- char *s = x(teststring);
- ], ac_cv_c_stringize=no, ac_cv_c_stringize=yes))
- if test "${ac_cv_c_stringize}" = yes
- then
- AC_DEFINE(HAVE_STRINGIZE)
- fi
- AC_MSG_RESULT([${ac_cv_c_stringize}])
- ])dnl
- define(AC_ARG_ARRAY,
- [errprint(__file__:__line__: [$0] has been removed; don't do unportable things with arguments
- )m4exit(4)])
- dnl Check the object extension used by the compiler: typically .o or
- dnl .obj. If this is called, some other behaviour will change,
- dnl determined by ac_objext.
- AC_DEFUN(AC_OBJEXT,
- [AC_MSG_CHECKING([for object suffix])
- AC_CACHE_VAL(ac_cv_objext,
- [rm -f conftest*
- echo 'int i = 1;' > conftest.$ac_ext
- if AC_TRY_EVAL(ac_compile); then
- for ac_file in conftest.*; do
- case $ac_file in
- *.c) ;;
- *) ac_cv_objext=`echo $ac_file | sed -e s/conftest.//` ;;
- esac
- done
- else
- AC_MSG_ERROR([installation or configuration problem; compiler does not work])
- fi
- rm -f conftest*])
- AC_MSG_RESULT($ac_cv_objext)
- OBJEXT=$ac_cv_objext
- ac_objext=$ac_cv_objext
- AC_SUBST(OBJEXT)])
- dnl Determine the linker flags (e.g. `-L' and `-l') for the Fortran 77
- dnl intrinsic and run-time libraries that are required to successfully
- dnl link a Fortran 77 program or shared library. The output variable
- dnl FLIBS is set to these flags.
- dnl
- dnl This macro is intended to be used in those situations when it is
- dnl necessary to mix, e.g. C++ and Fortran 77, source code into a single
- dnl program or shared library.
- dnl
- dnl For example, if object files from a C++ and Fortran 77 compiler must
- dnl be linked together, then the C++ compiler/linker must be used for
- dnl linking (since special C++-ish things need to happen at link time
- dnl like calling global constructors, instantiating templates, enabling
- dnl exception support, etc.).
- dnl
- dnl However, the Fortran 77 intrinsic and run-time libraries must be
- dnl linked in as well, but the C++ compiler/linker doesn't know how to
- dnl add these Fortran 77 libraries. Hence, the macro
- dnl `AC_F77_LIBRARY_LDFLAGS' was created to determine these Fortran 77
- dnl libraries.
- dnl
- dnl This macro was packaged in its current form by Matthew D. Langston
- dnl <langston@SLAC.Stanford.EDU>. However, nearly all of this macro
- dnl came from the `OCTAVE_FLIBS' macro in `octave-2.0.13/aclocal.m4',
- dnl and full credit should go to John W. Eaton for writing this
- dnl extremely useful macro. Thank you John.
- dnl
- dnl AC_F77_LIBRARY_LDFLAGS()
- AC_DEFUN(AC_F77_LIBRARY_LDFLAGS,
- [AC_MSG_CHECKING([for Fortran 77 libraries])
- AC_REQUIRE([AC_PROG_F77])
- AC_REQUIRE([AC_CANONICAL_HOST])
- AC_CACHE_VAL(ac_cv_flibs,
- [changequote(, )dnl
- dnl Write a minimal program and compile it with -v. I don't know what
- dnl to do if your compiler doesn't have -v...
- echo " END" > conftest.f
- foutput=`${F77} -v -o conftest conftest.f 2>&1`
- dnl
- dnl The easiest thing to do for xlf output is to replace all the commas
- dnl with spaces. Try to only do that if the output is really from xlf,
- dnl since doing that causes problems on other systems.
- dnl
- xlf_p=`echo $foutput | grep xlfentry`
- if test -n "$xlf_p"; then
- foutput=`echo $foutput | sed 's/,/ /g'`
- fi
- dnl
- ld_run_path=`echo $foutput |
- sed -n -e 's/^.*LD_RUN_PATH *= *([^ ]*).*/1/p'`
- dnl
- dnl We are only supposed to find this on Solaris systems...
- dnl Uh, the run path should be absolute, shouldn't it?
- dnl
- case "$ld_run_path" in
- /*)
- if test "$ac_cv_prog_gcc" = yes; then
- ld_run_path="-Xlinker -R -Xlinker $ld_run_path"
- else
- ld_run_path="-R $ld_run_path"
- fi
- ;;
- *)
- ld_run_path=
- ;;
- esac
- dnl
- flibs=
- lflags=
- dnl
- dnl If want_arg is set, we know we want the arg to be added to the list,
- dnl so we don't have to examine it.
- dnl
- want_arg=
- dnl
- for arg in $foutput; do
- old_want_arg=$want_arg
- want_arg=
- dnl
- dnl None of the options that take arguments expect the argument to
- dnl start with a -, so pretend we didn't see anything special.
- dnl
- if test -n "$old_want_arg"; then
- case "$arg" in
- -*)
- old_want_arg=
- ;;
- esac
- fi
- case "$old_want_arg" in
- '')
- case $arg in
- /*.a)
- exists=false
- for f in $lflags; do
- if test x$arg = x$f; then
- exists=true
- fi
- done
- if $exists; then
- arg=
- else
- lflags="$lflags $arg"
- fi
- ;;
- -bI:*)
- exists=false
- for f in $lflags; do
- if test x$arg = x$f; then
- exists=true
- fi
- done
- if $exists; then
- arg=
- else
- if test "$ac_cv_prog_gcc" = yes; then
- lflags="$lflags -Xlinker $arg"
- else
- lflags="$lflags $arg"
- fi
- fi
- ;;
- -lang* | -lcrt0.o | -lc | -lgcc)
- arg=
- ;;
- -[lLR])
- want_arg=$arg
- arg=
- ;;
- -[lLR]*)
- exists=false
- for f in $lflags; do
- if test x$arg = x$f; then
- exists=true
- fi
- done
- if $exists; then
- arg=
- else
- case "$arg" in
- -lkernel32)
- case "$canonical_host_type" in
- *-*-cygwin*)
- arg=
- ;;
- *)
- lflags="$lflags $arg"
- ;;
- esac
- ;;
- -lm)
- ;;
- *)
- lflags="$lflags $arg"
- ;;
- esac
- fi
- ;;
- -u)
- want_arg=$arg
- arg=
- ;;
- -Y)
- want_arg=$arg
- arg=
- ;;
- *)
- arg=
- ;;
- esac
- ;;
- -[lLR])
- arg="$old_want_arg $arg"
- ;;
- -u)
- arg="-u $arg"
- ;;
- -Y)
- dnl
- dnl Should probably try to ensure unique directory options here too.
- dnl This probably only applies to Solaris systems, and then will only
- dnl work with gcc...
- dnl
- arg=`echo $arg | sed -e 's%^P,%%'`
- SAVE_IFS=$IFS
- IFS=:
- list=
- for elt in $arg; do
- list="$list -L$elt"
- done
- IFS=$SAVE_IFS
- arg="$list"
- ;;
- esac
- dnl
- if test -n "$arg"; then
- flibs="$flibs $arg"
- fi
- done
- if test -n "$ld_run_path"; then
- flibs_result="$ld_run_path $flibs"
- else
- flibs_result="$flibs"
- fi
- changequote([, ])dnl
- ac_cv_flibs="$flibs_result"])
- FLIBS="$ac_cv_flibs"
- AC_SUBST(FLIBS)dnl
- AC_MSG_RESULT($FLIBS)
- ])
- dnl ### Checks for operating system services
- AC_DEFUN(AC_SYS_INTERPRETER,
- [# Pull the hash mark out of the macro call to avoid m4 problems.
- ac_msg="whether #! works in shell scripts"
- AC_CACHE_CHECK($ac_msg, ac_cv_sys_interpreter,
- [echo '#! /bin/cat
- exit 69
- ' > conftest
- chmod u+x conftest
- (SHELL=/bin/sh; export SHELL; ./conftest >/dev/null)
- if test $? -ne 69; then
- ac_cv_sys_interpreter=yes
- else
- ac_cv_sys_interpreter=no
- fi
- rm -f conftest])
- interpval="$ac_cv_sys_interpreter"
- ])
- define(AC_HAVE_POUNDBANG,
- [errprint(__file__:__line__: [$0 has been replaced by AC_SYS_INTERPRETER, taking no arguments
- ])m4exit(4)])
- AC_DEFUN(AC_SYS_LONG_FILE_NAMES,
- [AC_CACHE_CHECK(for long file names, ac_cv_sys_long_file_names,
- [ac_cv_sys_long_file_names=yes
- # Test for long file names in all the places we know might matter:
- # . the current directory, where building will happen
- # $prefix/lib where we will be installing things
- # $exec_prefix/lib likewise
- # eval it to expand exec_prefix.
- # $TMPDIR if set, where it might want to write temporary files
- # if $TMPDIR is not set:
- # /tmp where it might want to write temporary files
- # /var/tmp likewise
- # /usr/tmp likewise
- if test -n "$TMPDIR" && test -d "$TMPDIR" && test -w "$TMPDIR"; then
- ac_tmpdirs="$TMPDIR"
- else
- ac_tmpdirs='/tmp /var/tmp /usr/tmp'
- fi
- for ac_dir in . $ac_tmpdirs `eval echo $prefix/lib $exec_prefix/lib` ; do
- test -d $ac_dir || continue
- test -w $ac_dir || continue # It is less confusing to not echo anything here.
- (echo 1 > $ac_dir/conftest9012345) 2>/dev/null
- (echo 2 > $ac_dir/conftest9012346) 2>/dev/null
- val=`cat $ac_dir/conftest9012345 2>/dev/null`
- if test ! -f $ac_dir/conftest9012345 || test "$val" != 1; then
- ac_cv_sys_long_file_names=no
- rm -f $ac_dir/conftest9012345 $ac_dir/conftest9012346 2>/dev/null
- break
- fi
- rm -f $ac_dir/conftest9012345 $ac_dir/conftest9012346 2>/dev/null
- done])
- if test $ac_cv_sys_long_file_names = yes; then
- AC_DEFINE(HAVE_LONG_FILE_NAMES)
- fi
- ])
- AC_DEFUN(AC_SYS_RESTARTABLE_SYSCALLS,
- [AC_CACHE_CHECK(for restartable system calls, ac_cv_sys_restartable_syscalls,
- [AC_TRY_RUN(
- [/* Exit 0 (true) if wait returns something other than -1,
- i.e. the pid of the child, which means that wait was restarted
- after getting the signal. */
- #include <sys/types.h>
- #include <signal.h>
- ucatch (isig) { }
- main () {
- int i = fork (), status;
- if (i == 0) { sleep (3); kill (getppid (), SIGINT); sleep (3); exit (0); }
- signal (SIGINT, ucatch);
- status = wait(&i);
- if (status == -1) wait(&i);
- exit (status == -1);
- }
- ], ac_cv_sys_restartable_syscalls=yes, ac_cv_sys_restartable_syscalls=no)])
- if test $ac_cv_sys_restartable_syscalls = yes; then
- AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS)
- fi
- ])
- AC_DEFUN(AC_PATH_X,
- [AC_REQUIRE_CPP()dnl Set CPP; we run AC_PATH_X_DIRECT conditionally.
- # If we find X, set shell vars x_includes and x_libraries to the
- # paths, otherwise set no_x=yes.
- # Uses ac_ vars as temps to allow command line to override cache and checks.
- # --without-x overrides everything else, but does not touch the cache.
- AC_MSG_CHECKING(for X)
- AC_ARG_WITH(x, [ --with-x use the X Window System])
- # $have_x is `yes', `no', `disabled', or empty when we do not yet know.
- if test "x$with_x" = xno; then
- # The user explicitly disabled X.
- have_x=disabled
- else
- if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then
- # Both variables are already set.
- have_x=yes
- else
- AC_CACHE_VAL(ac_cv_have_x,
- [# One or both of the vars are not set, and there is no cached value.
- ac_x_includes=NO ac_x_libraries=NO
- AC_PATH_X_XMKMF
- AC_PATH_X_DIRECT
- if test "$ac_x_includes" = NO || test "$ac_x_libraries" = NO; then
- # Didn't find X anywhere. Cache the known absence of X.
- ac_cv_have_x="have_x=no"
- else
- # Record where we found X for the cache.
- ac_cv_have_x="have_x=yes
- ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries"
- fi])dnl
- fi
- eval "$ac_cv_have_x"
- fi # $with_x != no
- if test "$have_x" != yes; then
- AC_MSG_RESULT($have_x)
- no_x=yes
- else
- # If each of the values was on the command line, it overrides each guess.
- test "x$x_includes" = xNONE && x_includes=$ac_x_includes
- test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries
- # Update the cache value to reflect the command line values.
- ac_cv_have_x="have_x=yes
- ac_x_includes=$x_includes ac_x_libraries=$x_libraries"
- AC_MSG_RESULT([libraries $x_libraries, headers $x_includes])
- fi
- ])
- dnl Internal subroutine of AC_PATH_X.
- dnl Set ac_x_includes and/or ac_x_libraries.
- AC_DEFUN(AC_PATH_X_XMKMF,
- [rm -fr conftestdir
- if mkdir conftestdir; then
- cd conftestdir
- # Make sure to not put "make" in the Imakefile rules, since we grep it out.
- cat > Imakefile <<'EOF'
- acfindx:
- @echo 'ac_im_incroot="${INCROOT}"; ac_im_usrlibdir="${USRLIBDIR}"; ac_im_libdir="${LIBDIR}"'
- EOF
- if (xmkmf) >/dev/null 2>/dev/null && test -f Makefile; then
- # GNU make sometimes prints "make[1]: Entering...", which would confuse us.
- eval `${MAKE-make} acfindx 2>/dev/null | grep -v make`
- # Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR.
- for ac_extension in a so sl; do
- if test ! -f $ac_im_usrlibdir/libX11.$ac_extension &&
- test -f $ac_im_libdir/libX11.$ac_extension; then
- ac_im_usrlibdir=$ac_im_libdir; break
- fi
- done
- # Screen out bogus values from the imake configuration. They are
- # bogus both because they are the default anyway, and because
- # using them would break gcc on systems where it needs fixed includes.
- case "$ac_im_incroot" in
- /usr/include) ;;
- *) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes="$ac_im_incroot" ;;
- esac
- case "$ac_im_usrlibdir" in
- /usr/lib | /lib) ;;
- *) test -d "$ac_im_usrlibdir" && ac_x_libraries="$ac_im_usrlibdir" ;;
- esac
- fi
- cd ..
- rm -fr conftestdir
- fi
- ])
- dnl Internal subroutine of AC_PATH_X.
- dnl Set ac_x_includes and/or ac_x_libraries.
- AC_DEFUN(AC_PATH_X_DIRECT,
- [if test "$ac_x_includes" = NO; then
- # Guess where to find include files, by looking for this one X11 .h file.
- test -z "$x_direct_test_include" && x_direct_test_include=X11/Intrinsic.h
- # First, try using that file with no special directory specified.
- AC_TRY_CPP([#include <$x_direct_test_include>],
- [# We can compile using X headers with no special include directory.
- ac_x_includes=],
- [# Look for the header file in a standard set of common directories.
- # Check X11 before X11Rn because it is often a symlink to the current release.
- for ac_dir in
- /usr/X11/include
- /usr/X11R6/include
- /usr/X11R5/include
- /usr/X11R4/include
-
- /usr/include/X11
- /usr/include/X11R6
- /usr/include/X11R5
- /usr/include/X11R4
-
- /usr/local/X11/include
- /usr/local/X11R6/include
- /usr/local/X11R5/include
- /usr/local/X11R4/include
-
- /usr/local/include/X11
- /usr/local/include/X11R6
- /usr/local/include/X11R5
- /usr/local/include/X11R4
-
- /usr/X386/include
- /usr/x386/include
- /usr/XFree86/include/X11
-
- /usr/include
- /usr/local/include
- /usr/unsupported/include
- /usr/athena/include
- /usr/local/x11r5/include
- /usr/lpp/Xamples/include
-
- /usr/openwin/include
- /usr/openwin/share/include
- ;
- do
- if test -r "$ac_dir/$x_direct_test_include"; then
- ac_x_includes=$ac_dir
- break
- fi
- done])
- fi # $ac_x_includes = NO
- if test "$ac_x_libraries" = NO; then
- # Check for the libraries.
- test -z "$x_direct_test_library" && x_direct_test_library=Xt
- test -z "$x_direct_test_function" && x_direct_test_function=XtMalloc
- # See if we find them without any special options.
- # Don't add to $LIBS permanently.
- ac_save_LIBS="$LIBS"
- LIBS="-l$x_direct_test_library $LIBS"
- AC_TRY_LINK(, [${x_direct_test_function}()],
- [LIBS="$ac_save_LIBS"
- # We can link X programs with no special library path.
- ac_x_libraries=],
- [LIBS="$ac_save_LIBS"
- # First see if replacing the include by lib works.
- # Check X11 before X11Rn because it is often a symlink to the current release.
- for ac_dir in `echo "$ac_x_includes" | sed s/include/lib/`
- /usr/X11/lib
- /usr/X11R6/lib
- /usr/X11R5/lib
- /usr/X11R4/lib
-
- /usr/lib/X11
- /usr/lib/X11R6
- /usr/lib/X11R5
- /usr/lib/X11R4
-
- /usr/local/X11/lib
- /usr/local/X11R6/lib
- /usr/local/X11R5/lib
- /usr/local/X11R4/lib
-
- /usr/local/lib/X11
- /usr/local/lib/X11R6
- /usr/local/lib/X11R5
- /usr/local/lib/X11R4
-
- /usr/X386/lib
- /usr/x386/lib
- /usr/XFree86/lib/X11
-
- /usr/lib
- /usr/local/lib
- /usr/unsupported/lib
- /usr/athena/lib
- /usr/local/x11r5/lib
- /usr/lpp/Xamples/lib
- /lib/usr/lib/X11
-
- /usr/openwin/lib
- /usr/openwin/share/lib
- ;
- do
- dnl Don't even attempt the hair of trying to link an X program!
- for ac_extension in a so sl; do
- if test -r $ac_dir/lib${x_direct_test_library}.$ac_extension; then
- ac_x_libraries=$ac_dir
- break 2
- fi
- done
- done])
- fi # $ac_x_libraries = NO
- ])
- dnl Find additional X libraries, magic flags, etc.
- AC_DEFUN(AC_PATH_XTRA,
- [AC_REQUIRE([AC_PATH_X])dnl
- if test "$no_x" = yes; then
- # Not all programs may use this symbol, but it does not hurt to define it.
- AC_DEFINE(X_DISPLAY_MISSING)
- X_CFLAGS= X_PRE_LIBS= X_LIBS= X_EXTRA_LIBS=
- else
- if test -n "$x_includes"; then
- X_CFLAGS="$X_CFLAGS -I$x_includes"
- fi
- # It would also be nice to do this for all -L options, not just this one.
- if test -n "$x_libraries"; then
- X_LIBS="$X_LIBS -L$x_libraries"
- dnl FIXME banish uname from this macro!
- # For Solaris; some versions of Sun CC require a space after -R and
- # others require no space. Words are not sufficient . . . .
- case "`(uname -sr) 2>/dev/null`" in
- "SunOS 5"*)
- AC_MSG_CHECKING(whether -R must be followed by a space)
- ac_xsave_LIBS="$LIBS"; LIBS="$LIBS -R$x_libraries"
- AC_TRY_LINK(, , ac_R_nospace=yes, ac_R_nospace=no)
- if test $ac_R_nospace = yes; then
- AC_MSG_RESULT(no)
- X_LIBS="$X_LIBS -R$x_libraries"
- else
- LIBS="$ac_xsave_LIBS -R $x_libraries"
- AC_TRY_LINK(, , ac_R_space=yes, ac_R_space=no)
- if test $ac_R_space = yes; then
- AC_MSG_RESULT(yes)
- X_LIBS="$X_LIBS -R $x_libraries"
- else
- AC_MSG_RESULT(neither works)
- fi
- fi
- LIBS="$ac_xsave_LIBS"
- esac
- fi
- # Check for system-dependent libraries X programs must link with.
- # Do this before checking for the system-independent R6 libraries
- # (-lICE), since we may need -lsocket or whatever for X linking.
- if test "$ISC" = yes; then
- X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
- else
- # Martyn.Johnson@cl.cam.ac.uk says this is needed for Ultrix, if the X
- # libraries were built with DECnet support. And karl@cs.umb.edu says
- # the Alpha needs dnet_stub (dnet does not exist).
- AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"])
- if test $ac_cv_lib_dnet_dnet_ntoa = no; then
- AC_CHECK_LIB(dnet_stub, dnet_ntoa,
- [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"])
- fi
- # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
- # to get the SysV transport functions.
- # chad@anasazi.com says the Pyramis MIS-ES running DC/OSx (SVR4)
- # needs -lnsl.
- # The nsl library prevents programs from opening the X display
- # on Irix 5.2, according to dickey@clark.net.
- AC_CHECK_FUNC(gethostbyname)
- if test $ac_cv_func_gethostbyname = no; then
- AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl")
- fi
- # lieder@skyler.mavd.honeywell.com says without -lsocket,
- # socket/setsockopt and other routines are undefined under SCO ODT
- # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
- # on later versions), says simon@lia.di.epfl.ch: it contains
- # gethostby* variants that don't use the nameserver (or something).
- # -lsocket must be given before -lnsl if both are needed.
- # We assume that if connect needs -lnsl, so does gethostbyname.
- AC_CHECK_FUNC(connect)
- if test $ac_cv_func_connect = no; then
- AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS", ,
- $X_EXTRA_LIBS)
- fi
- # gomez@mi.uni-erlangen.de says -lposix is necessary on A/UX.
- AC_CHECK_FUNC(remove)
- if test $ac_cv_func_remove = no; then
- AC_CHECK_LIB(posix, remove, X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix")
- fi
- # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay.
- AC_CHECK_FUNC(shmat)
- if test $ac_cv_func_shmat = no; then
- AC_CHECK_LIB(ipc, shmat, X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc")
- fi
- fi
- # Check for libraries that X11R6 Xt/Xaw programs need.
- ac_save_LDFLAGS="$LDFLAGS"
- test -n "$x_libraries" && LDFLAGS="$LDFLAGS -L$x_libraries"
- # SM needs ICE to (dynamically) link under SunOS 4.x (so we have to
- # check for ICE first), but we must link in the order -lSM -lICE or
- # we get undefined symbols. So assume we have SM if we have ICE.
- # These have to be linked with before -lX11, unlike the other
- # libraries we check for below, so use a different variable.
- # --interran@uluru.Stanford.EDU, kb@cs.umb.edu.
- AC_CHECK_LIB(ICE, IceConnectionNumber,
- [X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"], , $X_EXTRA_LIBS)
- LDFLAGS="$ac_save_LDFLAGS"
- fi
- AC_SUBST(X_CFLAGS)dnl
- AC_SUBST(X_PRE_LIBS)dnl
- AC_SUBST(X_LIBS)dnl
- AC_SUBST(X_EXTRA_LIBS)dnl
- ])
- dnl The old Cygwin32 macro is deprecated.
- AC_DEFUN(AC_CYGWIN32,
- [AC_OBSOLETE([$0], [; instead use AC_CYGWIN])dnl
- AC_CYGWIN])
- dnl Check for Cygwin. This is a way to set the right value for
- dnl EXEEXT.
- AC_DEFUN(AC_CYGWIN,
- [AC_CACHE_CHECK(for Cygwin environment, ac_cv_cygwin,
- [AC_TRY_COMPILE(,[
- #ifndef __CYGWIN__
- #define __CYGWIN__ __CYGWIN32__
- #endif
- return __CYGWIN__;],
- ac_cv_cygwin=yes, ac_cv_cygwin=no)
- rm -f conftest*])
- CYGWIN=
- test "$ac_cv_cygwin" = yes && CYGWIN=yes])
- dnl Check for mingw32. This is another way to set the right value for
- dnl EXEEXT.
- AC_DEFUN(AC_MINGW32,
- [AC_CACHE_CHECK(for mingw32 environment, ac_cv_mingw32,
- [AC_TRY_COMPILE(,[return __MINGW32__;],
- ac_cv_mingw32=yes, ac_cv_mingw32=no)
- rm -f conftest*])
- MINGW32=
- test "$ac_cv_mingw32" = yes && MINGW32=yes])
- dnl Check for EMX/OS2. This is another way to set the right value for
- dnl EXEEXT.
- AC_DEFUN(AC_EMXOS2,
- [AC_CACHE_CHECK(for EMX/OS2 environment, ac_cv_emxos2,
- [AC_TRY_COMPILE(,[return __EMX__;],
- ac_cv_emxos2=yes, ac_cv_emxos2=no)
- rm -f conftest*])
- AC_CACHE_VAL(ac_cv_libpre,
- if test "$ac_cv_emxos2" = yes ; then
- ac_cv_libpre=
- else
- ac_cv_libpre=lib
- fi
- )
- EMXOS2=
- test "$ac_cv_emxos2" = yes && EMXOS2=yes])
- dnl Check for the extension used for executables. This knows that we
- dnl add .exe for Cygwin or mingw32. Otherwise, it compiles a test
- dnl executable. If this is called, the executable extensions will be
- dnl automatically used by link commands run by the configure script.
- AC_DEFUN(AC_EXEEXT,
- [AC_REQUIRE([AC_CYGWIN])
- AC_REQUIRE([AC_MINGW32])
- AC_REQUIRE([AC_EMXOS2])
- AC_MSG_CHECKING([for executable suffix])
- AC_CACHE_VAL(ac_cv_exeext,
- [if test "$CYGWIN" = yes || test "$MINGW32" = yes || test "$EMXOS2" = yes; then
- ac_cv_exeext=.exe
- else
- rm -f conftest*
- echo 'int main () { return 0; }' > conftest.$ac_ext
- ac_cv_exeext=
- if AC_TRY_EVAL(ac_link); then
- for file in conftest.*; do
- case $file in
- *.c | *.o | *.obj) ;;
- *) ac_cv_exeext=`echo $file | sed -e s/conftest//` ;;
- esac
- done
- else
- AC_MSG_ERROR([installation or configuration problem: compiler cannot create executables.])
- fi
- rm -f conftest*
- test x"${ac_cv_exeext}" = x && ac_cv_exeext=no
- fi])
- EXEEXT=""
- test x"${ac_cv_exeext}" != xno && EXEEXT=${ac_cv_exeext}
- AC_MSG_RESULT(${ac_cv_exeext})
- dnl Setting ac_exeext will implicitly change the ac_link command.
- ac_exeext=$EXEEXT
- AC_SUBST(EXEEXT)])
- dnl ### Checks for UNIX variants
- dnl These are kludges which should be replaced by a single POSIX check.
- dnl They aren't cached, to discourage their use.
- AC_DEFUN(AC_AIX,
- [AC_BEFORE([$0], [AC_TRY_COMPILE])dnl
- AC_BEFORE([$0], [AC_TRY_RUN])dnl
- AC_MSG_CHECKING(for AIX)
- AC_EGREP_CPP(yes,
- [#ifdef _AIX
- yes
- #endif
- ], [AC_MSG_RESULT(yes); AC_DEFINE(_ALL_SOURCE)], AC_MSG_RESULT(no))
- ])
- AC_DEFUN(AC_MINIX,
- [AC_BEFORE([$0], [AC_TRY_COMPILE])dnl
- AC_BEFORE([$0], [AC_TRY_RUN])dnl
- AC_CHECK_HEADER(minix/config.h, MINIX=yes, MINIX=)
- if test "$MINIX" = yes; then
- AC_DEFINE(_POSIX_SOURCE)
- AC_DEFINE(_POSIX_1_SOURCE, 2)
- AC_DEFINE(_MINIX)
- fi
- ])
- AC_DEFUN(AC_ISC_POSIX,
- [AC_REQUIRE([AC_PROG_CC])dnl
- AC_BEFORE([$0], [AC_TRY_COMPILE])dnl
- AC_BEFORE([$0], [AC_TRY_RUN])dnl
- AC_MSG_CHECKING(for POSIXized ISC)
- if test -d /etc/conf/kconfig.d &&
- grep _POSIX_VERSION [/usr/include/sys/unistd.h] >/dev/null 2>&1
- then
- AC_MSG_RESULT(yes)
- ISC=yes # If later tests want to check for ISC.
- AC_DEFINE(_POSIX_SOURCE)
- if test "$GCC" = yes; then
- CC="$CC -posix"
- else
- CC="$CC -Xp"
- fi
- else
- AC_MSG_RESULT(no)
- ISC=
- fi
- ])
- AC_DEFUN(AC_XENIX_DIR,
- [AC_OBSOLETE([$0], [; instead use AC_HEADER_DIRENT])dnl
- AC_REQUIRE([AC_DIR_HEADER])dnl
- AC_MSG_CHECKING(for Xenix)
- AC_EGREP_CPP(yes,
- [#if defined(M_XENIX) && !defined(M_UNIX)
- yes
- #endif
- ], [AC_MSG_RESULT(yes); XENIX=yes], [AC_MSG_RESULT(no); XENIX=])
- if test "$XENIX" = yes; then
- # Make sure -ldir precedes -lx.
- test $ac_header_dirent = dirent.h && LIBS="-ldir $LIBS"
- LIBS="$LIBS -lx"
- fi
- ])
- AC_DEFUN(AC_DYNIX_SEQ,
- [AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT])dnl
- AC_CHECK_LIB(seq, getmntent, LIBS="-lseq $LIBS")
- ])
- AC_DEFUN(AC_IRIX_SUN,
- [AC_OBSOLETE([$0], [; instead use AC_FUNC_GETMNTENT or AC_CHECK_LIB(sun, getpwnam)])dnl
- AC_CHECK_LIB(sun, getmntent, LIBS="-lsun $LIBS")
- ])
- AC_DEFUN(AC_SCO_INTL,
- [AC_OBSOLETE([$0], [; instead use AC_FUNC_STRFTIME])dnl
- AC_CHECK_LIB(intl, strftime, LIBS="-lintl $LIBS")
- ])