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configure.in：源码内容
							#! /bin/bash -norc
# This file is an input file used by the GNU "autoconf" program to
# generate the file "configure", which is run during Tcl installation
# to configure the system for the local environment.
#
# RCS: @(#) $Id: configure.in,v 1.68.2.22 2008/02/06 15:25:28 dgp Exp $
AC_INIT(../generic/tcl.h)
AC_PREREQ(2.13)
TCL_VERSION=8.4
TCL_MAJOR_VERSION=8
TCL_MINOR_VERSION=4
TCL_PATCH_LEVEL=".18"
VER=$TCL_MAJOR_VERSION$TCL_MINOR_VERSION
TCL_DDE_VERSION=1.2
TCL_DDE_MAJOR_VERSION=1
TCL_DDE_MINOR_VERSION=2
DDEVER=$TCL_DDE_MAJOR_VERSION$TCL_DDE_MINOR_VERSION
TCL_REG_VERSION=1.1
TCL_REG_MAJOR_VERSION=1
TCL_REG_MINOR_VERSION=1
REGVER=$TCL_REG_MAJOR_VERSION$TCL_REG_MINOR_VERSION
#------------------------------------------------------------------------
# Handle the --prefix=... option
#------------------------------------------------------------------------
if test "${prefix}" = "NONE"; then
    prefix=/usr/local
fi
if test "${exec_prefix}" = "NONE"; then
    exec_prefix=$prefix
fi
# libdir must be a fully qualified path (not ${exec_prefix}/lib)
eval libdir="$libdir"
#------------------------------------------------------------------------
# Standard compiler checks
#------------------------------------------------------------------------
# If the user did not set CFLAGS, set it now to keep
# the AC_PROG_CC macro from adding "-g -O2".
if test "${CFLAGS+set}" != "set" ; then
    CFLAGS=""
fi
AC_PROG_CC
# To properly support cross-compilation, one would
# need to use these tool checks instead of
# the ones below and reconfigure with
# autoconf 2.50. You can also just set
# the CC, AR, RANLIB, and RC environment
# variables if you want to cross compile.
dnl AC_CHECK_TOOL(AR, ar)
dnl AC_CHECK_TOOL(RANLIB, ranlib)
dnl AC_CHECK_TOOL(RC, windres)
if test "${GCC}" = "yes" ; then
    AC_CHECK_PROG(AR, ar, ar)
    AC_CHECK_PROG(RANLIB, ranlib, ranlib)
    AC_CHECK_PROG(RC, windres, windres)
    if test "${AR}" = "" ; then
	AC_MSG_ERROR([Required archive tool 'ar' not found on PATH.])
    fi
    if test "${RANLIB}" = "" ; then
	AC_MSG_ERROR([Required archive index tool 'ranlib' not found on PATH.])
    fi
    if test "${RC}" = "" ; then
	AC_MSG_ERROR([Required resource tool 'windres' not found on PATH.])
    fi
fi
#--------------------------------------------------------------------
# Checks to see if the make progeam sets the $MAKE variable.
#--------------------------------------------------------------------
AC_PROG_MAKE_SET
#--------------------------------------------------------------------
# Perform additinal compiler tests.
#--------------------------------------------------------------------
AC_CYGWIN
if test "$ac_cv_cygwin" = "yes" ; then
    AC_MSG_ERROR([Compiling under Cygwin is not currently supported.
A maintainer for the Cygwin port of Tcl/Tk is needed. See the README
file for information about building with Mingw.])
fi
AC_CACHE_CHECK(for SEH support in compiler,
    tcl_cv_seh,
AC_TRY_RUN([
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
int main(int argc, char** argv) {
    int a, b = 0;
    __try {
        a = 666 / b;
    }
    __except (EXCEPTION_EXECUTE_HANDLER) {
        return 0;
    }
    return 1;
}
],
        tcl_cv_seh=yes,
        tcl_cv_seh=no,
        tcl_cv_seh=no)
)
if test "$tcl_cv_seh" = "no" ; then
    AC_DEFINE(HAVE_NO_SEH, 1,
            [Defined when mingw does not support SEH])
fi
#
# Check to see if the excpt.h include file provided contains the
# definition for EXCEPTION_DISPOSITION; if not, which is the case
# with Cygwin's version as of 2002-04-10, define it to be int, 
# sufficient for getting the current code to work.
#
AC_CACHE_CHECK(for EXCEPTION_DISPOSITION support in include files,
    tcl_cv_eh_disposition,
AC_TRY_COMPILE([
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
],
[
  EXCEPTION_DISPOSITION x;
],
        tcl_cv_eh_disposition=yes,
        tcl_cv_eh_disposition=no)
)
if test "$tcl_cv_eh_disposition" = "no" ; then
    AC_DEFINE(EXCEPTION_DISPOSITION, int,
            [Defined when cygwin/mingw does not support EXCEPTION DISPOSITION])
fi
# Check to see if the winsock2.h include file provided contains
# typedefs like LPFN_ACCEPT and friends.
#
AC_CACHE_CHECK(for LPFN_ACCEPT support in winsock2.h,
    tcl_cv_lpfn_decls,
AC_TRY_COMPILE([
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#include <winsock2.h>
],
[
  LPFN_ACCEPT accept;
],
        tcl_cv_lpfn_decls=yes,
        tcl_cv_lpfn_decls=no)
)
if test "$tcl_cv_lpfn_decls" = "no" ; then
    AC_DEFINE(HAVE_NO_LPFN_DECLS, 1,
            [Defined when cygwin/mingw does not support LPFN_ACCEPT and friends.])
fi
# Check to see if winnt.h defines CHAR, SHORT, and LONG
# even if VOID has already been #defined. The win32api
# used by mingw and cygwin is known to do this.
AC_CACHE_CHECK(for winnt.h that ignores VOID define,
    tcl_cv_winnt_ignore_void,
AC_TRY_COMPILE([
#define VOID void
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
],
[
  CHAR c;
  SHORT s;
  LONG l;
],
        tcl_cv_winnt_ignore_void=yes,
        tcl_cv_winnt_ignore_void=no)
)
if test "$tcl_cv_winnt_ignore_void" = "yes" ; then
    AC_DEFINE(HAVE_WINNT_IGNORE_VOID, 1,
            [Defined when cygwin/mingw ignores VOID define in winnt.h])
fi
# Check to see if malloc.h is missing the alloca function
# declaration. This is known to be a problem with Mingw.
# If we compiled without the function declaration, it
# would work but we would get a warning message from gcc.
# If we add the function declaration ourselves, it
# would not compile correctly because the _alloca
# function expects the argument to be passed in a
# register and not on the stack. Instead, we just
# call it from inline asm code.
AC_CACHE_CHECK(for alloca declaration in malloc.h,
    tcl_cv_malloc_decl_alloca,
AC_TRY_COMPILE([
#include <malloc.h>
],
[
  size_t arg = 0;
  void* ptr;
  ptr = alloca;
  ptr = alloca(arg);
],
        tcl_cv_malloc_decl_alloca=yes,
        tcl_cv_malloc_decl_alloca=no)
)
if test "$tcl_cv_malloc_decl_alloca" = "no" &&
   test "${GCC}" = "yes" ; then
    AC_DEFINE(HAVE_ALLOCA_GCC_INLINE, 1,
            [Defined when gcc should use inline ASM to call alloca.])
fi
# See if the compiler supports casting to a union type.
# This is used to stop gcc from printing a compiler
# warning when initializing a union member.
AC_CACHE_CHECK(for cast to union support,
    tcl_cv_cast_to_union,
AC_TRY_COMPILE([],
[
  union foo { int i; double d; };
  union foo f = (union foo) (int) 0;
],
        tcl_cv_cast_to_union=yes,
        tcl_cv_cast_to_union=no)
)
if test "$tcl_cv_cast_to_union" = "yes"; then
    AC_DEFINE(HAVE_CAST_TO_UNION, 1,
            [Defined when compiler supports casting to union type.])
fi
#--------------------------------------------------------------------
# Determines the correct binary file extension (.o, .obj, .exe etc.)
#--------------------------------------------------------------------
AC_OBJEXT
AC_EXEEXT
#--------------------------------------------------------------------
# Check whether --enable-threads or --disable-threads was given.
#--------------------------------------------------------------------
SC_ENABLE_THREADS
#--------------------------------------------------------------------
# The statements below define a collection of symbols related to
# building libtcl as a shared library instead of a static library.
#--------------------------------------------------------------------
SC_ENABLE_SHARED
#--------------------------------------------------------------------
# The statements below define a collection of compile flags.  This 
# macro depends on the value of SHARED_BUILD, and should be called
# after SC_ENABLE_SHARED checks the configure switches.
#--------------------------------------------------------------------
SC_CONFIG_CFLAGS
#--------------------------------------------------------------------
# Set the default compiler switches based on the --enable-symbols 
# option.  This macro depends on C flags, and should be called
# after SC_CONFIG_CFLAGS macro is called.
#--------------------------------------------------------------------
SC_ENABLE_SYMBOLS
TCL_DBGX=${DBGX}
#--------------------------------------------------------------------
# man2tcl needs this so that it can use errno.h
#--------------------------------------------------------------------
AC_CHECK_HEADER(errno.h, , MAN2TCLFLAGS="-DNO_ERRNO_H")
AC_SUBST(MAN2TCLFLAGS)
#------------------------------------------------------------------------
# tclConfig.sh refers to this by a different name
#------------------------------------------------------------------------
TCL_SHARED_BUILD=${SHARED_BUILD}
#--------------------------------------------------------------------
# Perform final evaluations of variables with possible substitutions.
#--------------------------------------------------------------------
TCL_SHARED_LIB_SUFFIX="${NODOT_VERSION}${DLLSUFFIX}"
TCL_UNSHARED_LIB_SUFFIX="${NODOT_VERSION}${LIBSUFFIX}"
TCL_EXPORT_FILE_SUFFIX="${NODOT_VERSION}${LIBSUFFIX}"
eval "TCL_SRC_DIR="`cd $srcdir/..; pwd`""
eval "TCL_DLL_FILE=tcl${VER}${DLLSUFFIX}"
eval "TCL_LIB_FILE=${LIBPREFIX}tcl$VER${LIBSUFFIX}"
eval "TCL_LIB_FLAG="-ltcl${VER}${LIBFLAGSUFFIX}""
eval "TCL_BUILD_LIB_SPEC="-L`pwd` ${TCL_LIB_FLAG}""
eval "TCL_LIB_SPEC="-L${libdir} ${TCL_LIB_FLAG}""
eval "TCL_STUB_LIB_FILE="${LIBPREFIX}tclstub${VER}${LIBSUFFIX}""
eval "TCL_STUB_LIB_FLAG="-ltclstub${VER}${LIBFLAGSUFFIX}""
eval "TCL_BUILD_STUB_LIB_SPEC="-L`pwd` ${TCL_STUB_LIB_FLAG}""
eval "TCL_STUB_LIB_SPEC="-L${libdir} ${TCL_STUB_LIB_FLAG}""
eval "TCL_BUILD_STUB_LIB_PATH="`pwd`/${TCL_STUB_LIB_FILE}""
eval "TCL_STUB_LIB_PATH="${libdir}/${TCL_STUB_LIB_FILE}""
# Install time header dir can be set via --includedir
eval "TCL_INCLUDE_SPEC="-I${includedir}""
eval "DLLSUFFIX=${DLLSUFFIX}"
eval "LIBPREFIX=${LIBPREFIX}"
eval "LIBSUFFIX=${LIBSUFFIX}"
eval "EXESUFFIX=${EXESUFFIX}"
CFG_TCL_SHARED_LIB_SUFFIX=${TCL_SHARED_LIB_SUFFIX}
CFG_TCL_UNSHARED_LIB_SUFFIX=${TCL_UNSHARED_LIB_SUFFIX}
CFG_TCL_EXPORT_FILE_SUFFIX=${TCL_EXPORT_FILE_SUFFIX}
#--------------------------------------------------------------------
# Adjust the defines for how the resources are built depending
# on symbols and static vs. shared.
#--------------------------------------------------------------------
if test ${SHARED_BUILD} = 0 ; then
    if test "${DBGX}" = "g"; then
        RC_DEFINES="${RC_DEFINE} STATIC_BUILD ${RC_DEFINE} DEBUG"
    else
        RC_DEFINES="${RC_DEFINE} STATIC_BUILD"
    fi
else
    if test "${DBGX}" = "g"; then
        RC_DEFINES="${RC_DEFINE} DEBUG"
    else
        RC_DEFINES=""
    fi
fi
#--------------------------------------------------------------------
#	The statements below define the symbol TCL_PACKAGE_PATH, which
#	gives a list of directories that may contain packages.  The list
#	consists of one directory for machine-dependent binaries and
#	another for platform-independent scripts.
#--------------------------------------------------------------------
if test "$prefix" != "$exec_prefix"; then
    TCL_PACKAGE_PATH="${libdir} ${prefix}/lib"
else
    TCL_PACKAGE_PATH="${prefix}/lib"
fi
AC_SUBST(TCL_VERSION)
AC_SUBST(TCL_MAJOR_VERSION)
AC_SUBST(TCL_MINOR_VERSION)
AC_SUBST(TCL_PATCH_LEVEL)
AC_SUBST(TCL_LIB_FILE)
AC_SUBST(TCL_LIB_FLAG)
# empty on win
AC_SUBST(TCL_LIB_SPEC)
AC_SUBST(TCL_STUB_LIB_FILE)
AC_SUBST(TCL_STUB_LIB_FLAG)
AC_SUBST(TCL_STUB_LIB_SPEC)
AC_SUBST(TCL_STUB_LIB_PATH)
AC_SUBST(TCL_INCLUDE_SPEC)
AC_SUBST(TCL_BUILD_STUB_LIB_SPEC)
AC_SUBST(TCL_BUILD_STUB_LIB_PATH)
AC_SUBST(TCL_DLL_FILE)
AC_SUBST(TCL_SRC_DIR)
AC_SUBST(TCL_BIN_DIR)
AC_SUBST(TCL_DBGX)
AC_SUBST(CFG_TCL_SHARED_LIB_SUFFIX)
AC_SUBST(CFG_TCL_UNSHARED_LIB_SUFFIX)
AC_SUBST(CFG_TCL_EXPORT_FILE_SUFFIX)
# win/tcl.m4 doesn't set (CFLAGS)
AC_SUBST(CFLAGS_DEFAULT)
AC_SUBST(EXTRA_CFLAGS)
AC_SUBST(CYGPATH)
AC_SUBST(DEPARG)
AC_SUBST(CC_OBJNAME)
AC_SUBST(CC_EXENAME)
# win/tcl.m4 doesn't set (LDFLAGS)
AC_SUBST(LDFLAGS_DEFAULT)
AC_SUBST(LDFLAGS_DEBUG)
AC_SUBST(LDFLAGS_OPTIMIZE)
AC_SUBST(LDFLAGS_CONSOLE)
AC_SUBST(LDFLAGS_WINDOW)
AC_SUBST(AR)
AC_SUBST(RANLIB)
AC_SUBST(STLIB_LD)
AC_SUBST(SHLIB_LD)
AC_SUBST(SHLIB_LD_LIBS)
AC_SUBST(SHLIB_CFLAGS)
AC_SUBST(SHLIB_SUFFIX)
AC_SUBST(TCL_SHARED_BUILD)
AC_SUBST(LIBS)
AC_SUBST(LIBS_GUI)
AC_SUBST(DLLSUFFIX)
AC_SUBST(LIBPREFIX)
AC_SUBST(LIBSUFFIX)
AC_SUBST(EXESUFFIX)
AC_SUBST(LIBRARIES)
AC_SUBST(MAKE_LIB)
AC_SUBST(POST_MAKE_LIB)
AC_SUBST(MAKE_DLL)
AC_SUBST(MAKE_EXE)
# empty on win, but needs sub'ing
AC_SUBST(TCL_BUILD_LIB_SPEC)
AC_SUBST(TCL_LD_SEARCH_FLAGS)
AC_SUBST(TCL_NEEDS_EXP_FILE)
AC_SUBST(TCL_BUILD_EXP_FILE)
AC_SUBST(TCL_EXP_FILE)
AC_SUBST(DL_LIBS)
AC_SUBST(LIBOBJS)
AC_SUBST(TCL_LIB_VERSIONS_OK)
AC_SUBST(TCL_PACKAGE_PATH)
# win only
AC_SUBST(TCL_DDE_VERSION)
AC_SUBST(TCL_DDE_MAJOR_VERSION)
AC_SUBST(TCL_DDE_MINOR_VERSION)
AC_SUBST(TCL_REG_VERSION)
AC_SUBST(TCL_REG_MAJOR_VERSION)
AC_SUBST(TCL_REG_MINOR_VERSION)
AC_SUBST(RC)
AC_SUBST(RC_OUT)
AC_SUBST(RC_TYPE)
AC_SUBST(RC_INCLUDE)
AC_SUBST(RC_DEFINE)
AC_SUBST(RC_DEFINES)
AC_SUBST(RES)
AC_OUTPUT(Makefile tclConfig.sh tcl.hpj)

						