aclocal.m4
上传用户:weiliju62
上传日期:2007-01-06
资源大小:619k
文件大小:19k
- dnl Checks if structure 'stat' have field 'st_spare1'.
- dnl Defines HAVE_ST_SPARE1 on success.
- AC_DEFUN(AC_STRUCT_ST_SPARE1,
- [AC_CACHE_CHECK([if struct stat contains st_spare1], ac_cv_struct_st_spare1,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/stat.h>],
- [struct stat s; s.st_spare1 = 0;],
- [ac_cv_struct_st_spare1=yes],
- [ac_cv_struct_st_spare1=no])])
- if test $ac_cv_struct_st_spare1 = yes; then
- AC_DEFINE(HAVE_ST_SPARE1)
- fi])
- dnl Checks if structure 'stat' have field 'st_atim.tv_nsec'.
- dnl Defines HAVE_ST_NSEC on success.
- AC_DEFUN(AC_STRUCT_ST_NSEC,
- [AC_CACHE_CHECK([if struct stat contains st_atim.tv_nsec], ac_cv_struct_st_nsec,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/stat.h>],
- [struct stat s; s.st_atim.tv_nsec = 0;],
- [ac_cv_struct_st_nsec=yes],
- [ac_cv_struct_st_nsec=no])])
- if test $ac_cv_struct_st_nsec = yes; then
- AC_DEFINE(HAVE_ST_NSEC)
- fi])
- dnl Checks if structure 'mtget' have field 'mt_dsreg'.
- dnl Defines HAVE_MTGET_DSREG on success.
- AC_DEFUN(AC_STRUCT_MTGET_DSREG,
- [AC_CACHE_CHECK([if struct mtget contains mt_dsreg], ac_cv_struct_mtget_dsreg,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/mtio.h>],
- [struct mtget t; t.mt_dsreg = 0;],
- [ac_cv_struct_mtget_dsreg=yes],
- [ac_cv_struct_mtget_dsreg=no])])
- if test $ac_cv_struct_mtget_dsreg = yes; then
- AC_DEFINE(HAVE_MTGET_DSREG)
- fi])
- dnl Checks if structure 'mtget' have field 'mt_resid'.
- dnl Defines HAVE_MTGET_RESID on success.
- AC_DEFUN(AC_STRUCT_MTGET_RESID,
- [AC_CACHE_CHECK([if struct mtget contains mt_resid], ac_cv_struct_mtget_resid,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/mtio.h>],
- [struct mtget t; t.mt_resid = 0;],
- [ac_cv_struct_mtget_resid=yes],
- [ac_cv_struct_mtget_resid=no])])
- if test $ac_cv_struct_mtget_resid = yes; then
- AC_DEFINE(HAVE_MTGET_RESID)
- fi])
- dnl Checks if structure 'mtget' have field 'mt_fileno'.
- dnl Defines HAVE_MTGET_FILENO on success.
- AC_DEFUN(AC_STRUCT_MTGET_FILENO,
- [AC_CACHE_CHECK([if struct mtget contains mt_fileno],
- ac_cv_struct_mtget_fileno,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/mtio.h>],
- [struct mtget t; t.mt_fileno = 0;],
- [ac_cv_struct_mtget_fileno=yes],
- [ac_cv_struct_mtget_fileno=no])])
- if test $ac_cv_struct_mtget_fileno = yes; then
- AC_DEFINE(HAVE_MTGET_FILENO)
- fi])
- dnl Checks if structure 'mtget' have field 'mt_blkno'.
- dnl Defines HAVE_MTGET_BLKNO on success.
- AC_DEFUN(AC_STRUCT_MTGET_BLKNO,
- [AC_CACHE_CHECK([if struct mtget contains mt_blkno], ac_cv_struct_mtget_blkno,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/mtio.h>],
- [struct mtget t; t.mt_blkno = 0;],
- [ac_cv_struct_mtget_blkno=yes],
- [ac_cv_struct_mtget_blkno=no])])
- if test $ac_cv_struct_mtget_blkno = yes; then
- AC_DEFINE(HAVE_MTGET_BLKNO)
- fi])
- dnl Checks for illegal declaration of 'union semun' in sys/sem.h.
- dnl Defines HAVE_UNION_SEMUN on success.
- AC_DEFUN(AC_STRUCT_UNION_SEMUN,
- [AC_CACHE_CHECK([if an illegal declaration for union semun in sys/sem.h exists], ac_cv_struct_union_semun,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/ipc.h>
- #include <sys/sem.h>], [union semun s;],
- [ac_cv_struct_union_semun=yes],
- [ac_cv_struct_union_semun=no])])
- if test $ac_cv_struct_union_semun = yes; then
- AC_DEFINE(HAVE_UNION_SEMUN)
- fi])
- dnl Checks if 'union wait' is declared in 'wait.h' or 'sys/wait.h'.
- dnl Defines HAVE_UNION_WAIT on success.
- AC_DEFUN(AC_STRUCT_UNION_WAIT,
- [AC_CACHE_CHECK([if union wait is declared in wait.h or sys/wait.h], ac_cv_struct_union_wait,
- [AC_TRY_COMPILE([#include <sys/types.h>
- #if defined(HAVE_WAIT_H)
- # include <wait.h>
- #else
- #include <sys/wait.h>
- #endif], [union wait w;],
- [ac_cv_struct_union_wait=yes],
- [ac_cv_struct_union_wait=no])])
- if test $ac_cv_struct_union_wait = yes; then
- AC_DEFINE(HAVE_UNION_WAIT)
- fi])
- dnl Checks if 'struct rusage' is declared in sys/resource.h.
- dnl Defines HAVE_STRUCT_RUSAGE on success.
- AC_DEFUN(AC_STRUCT_RUSAGE,
- [AC_CACHE_CHECK([if struct rusage is declared in sys/resource.h], ac_cv_struct_rusage,
- [AC_TRY_COMPILE([#include <sys/time.h>
- #include <sys/resource.h>], [struct rusage r;],
- [ac_cv_struct_rusage=yes],
- [ac_cv_struct_rusage=no])])
- if test $ac_cv_struct_rusage = yes; then
- AC_DEFINE(HAVE_STRUCT_RUSAGE)
- fi])
- dnl Checks wether major(), minor() and makedev() are defined in
- dnl 'sys/mkdev.h' or in 'sys/sysmacros.h. Defines MAJOR_IN_MKDEV or
- dnl MAJOR_IN_SYSMACROS or nothing.
- AC_DEFUN(AC_HEADER_MAKEDEV,
- [AC_CACHE_CHECK([for header file containing major(), minor() and makedev()],
- ac_cv_header_makedev,
- [ac_cv_header_makedev=none
- AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/mkdev.h>],
- [int i = major(0); i = minor(0); i = makedev(0,0);],
- [ac_cv_header_makedev=sys/mkdev.h])
- if test $ac_cv_header_makedev = none; then
- AC_TRY_COMPILE([#include <sys/types.h>
- #include <sys/sysmacros.h>],
- [int i = major(0); i = minor(0); i = makedev(0,0);],
- [ac_cv_header_makedev=sys/sysmacros.h])
- fi])
- if test $ac_cv_header_makedev = sys/mkdev.h; then
- AC_DEFINE(MAJOR_IN_MKDEV)
- fi
- if test $ac_cv_header_makedev = sys/sysmacros.h; then
- AC_DEFINE(MAJOR_IN_SYSMACROS)
- fi])
- dnl Checks for USG derived STDIO
- dnl Defines HAVE_USG_STDIO on success.
- AC_DEFUN(AC_HEADER_USG_STDIO,
- [AC_CACHE_CHECK([for USG derived STDIO], ac_cv_header_usg_stdio,
- [AC_TRY_COMPILE([#include <stdio.h>],
- [FILE *f;
- int flag;
- int count;
- char *ptr;
- f = fopen("confdefs.h", "r");
- flag = f->_flag & _IONBF;
- flag |= f->_flag & _IOERR;
- flag |= f->_flag & _IOEOF;
- count = f->_cnt;
- ptr = (char *)f->_ptr;
- fclose(f);],
- [ac_cv_header_usg_stdio=yes],
- [ac_cv_header_usg_stdio=no])])
- if test $ac_cv_header_usg_stdio = yes; then
- AC_DEFINE(HAVE_USG_STDIO)
- fi])
- dnl Checks for errno definition in <errno.h>
- dnl Defines HAVE_ERRNO_DEF on success.
- AC_DEFUN(AC_HEADER_ERRNO_DEF,
- [AC_CACHE_CHECK([for errno definition in errno.h], ac_cv_header_errno_def,
- [AC_TRY_COMPILE([#include <errno.h>],
- [errno = 0;],
- [ac_cv_header_errno_def=yes],
- [ac_cv_header_errno_def=no])])
- if test $ac_cv_header_errno_def = yes; then
- AC_DEFINE(HAVE_ERRNO_DEF)
- fi])
- dnl Checks for UNIX-98 compliant <inttypes.h>
- dnl Defines HAVE_INTTYPES_H on success.
- AC_DEFUN(AC_HEADER_INTTYPES,
- [AC_CACHE_CHECK([for UNIX-98 compliant inttypes.h], ac_cv_header_inttypes,
- [AC_TRY_COMPILE([#include <inttypes.h>],
- [int8_t c; uint8_t uc; int16_t s; uint16_t us; int32_t i; uint32_t ui;
- int64_t ll; uint64_t ull;
- intptr_t ip; uintptr_t uip;],
- [ac_cv_header_inttypes=yes],
- [ac_cv_header_inttypes=no])])
- if test $ac_cv_header_inttypes = yes; then
- AC_DEFINE(HAVE_INTTYPES_H)
- fi])
- dnl Checks for type long long
- dnl Defines HAVE_LONGLONG on success.
- AC_DEFUN(AC_TYPE_LONGLONG,
- [AC_CACHE_CHECK([for type long long], ac_cv_type_longlong,
- [AC_TRY_COMPILE([], [long long i;],
- [ac_cv_type_longlong=yes],
- [ac_cv_type_longlong=no])])
- if test $ac_cv_type_longlong = yes; then
- AC_DEFINE(HAVE_LONGLONG)
- fi])
- dnl Checks if C-compiler orders bitfields htol
- dnl Defines BITFIELDS_HTOL on success.
- AC_DEFUN(AC_C_BITFIELDS,
- [AC_CACHE_CHECK([whether bitorder in bitfields is htol], ac_cv_c_bitfields_htol,
- [AC_TRY_RUN([
- struct {
- unsigned char x1:4;
- unsigned char x2:4;
- } a;
- main()
- {
- char *cp;
- cp = (char *)&a;
- *cp = 0x12;
- exit(a.x1 == 2);}],
- [ac_cv_c_bitfields_htol=yes],
- [ac_cv_c_bitfields_htol=no])])
- if test $ac_cv_c_bitfields_htol = yes; then
- AC_DEFINE(BITFIELDS_HTOL)
- fi])
- dnl Checks if C-compiler understands prototypes
- dnl Defines PROTOTYPES on success.
- AC_DEFUN(AC_TYPE_PROTOTYPES,
- [AC_CACHE_CHECK([for prototypes], ac_cv_type_prototypes,
- [AC_TRY_RUN([
- doit(int i, ...)
- {return 0;}
- main(int ac, char *av[])
- { doit(1, 2, 3);
- exit(0);}],
- [ac_cv_type_prototypes=yes],
- [ac_cv_type_prototypes=no])])
- if test $ac_cv_type_prototypes = yes; then
- AC_DEFINE(PROTOTYPES)
- fi])
- dnl Checks for type size_t
- dnl Defines HAVE_SIZE_T_ on success.
- AC_DEFUN(AC_TYPE_SIZE_T_,
- [AC_CACHE_CHECK([for type size_t], ac_cv_type_size_t_,
- [AC_TRY_COMPILE([#include <sys/types.h>], [size_t s;],
- [ac_cv_type_size_t_=yes],
- [ac_cv_type_size_t_=no])])
- if test $ac_cv_type_size_t_ = yes; then
- AC_DEFINE(HAVE_SIZE_T)
- else
- AC_DEFINE(NO_SIZE_T)
- fi])
- dnl Checks if type char is unsigned
- dnl Defines CHAR_IS_UNSIGNED on success.
- AC_DEFUN(AC_TYPE_CHAR,
- [AC_CACHE_CHECK([if char is unsigned], ac_cv_type_char_unsigned,
- [AC_TRY_RUN([
- main()
- {
- char c;
- c = -1;
- exit(c < 0);}],
- [ac_cv_type_char_unsigned=yes],
- [ac_cv_type_char_unsigned=no],
- [ac_cv_type_char_unsigned=no])])
- if test $ac_cv_type_char_unsigned = yes; then
- AC_DEFINE(CHAR_IS_UNSIGNED)
- fi])
- dnl Checks if function/macro va_copy() is available
- dnl Defines HAVE_VA_COPY on success.
- AC_DEFUN(AC_FUNC_VA_COPY,
- [AC_CACHE_CHECK([for va_copy], ac_cv_func_va_copy,
- [AC_TRY_LINK([
- #ifdef HAVE_STDARG_H
- # include <stdarg.h>
- #else
- # include <vararg.h>
- #endif],
- [
- va_list a, b;
- va_copy(a, b);],
- [ac_cv_func_va_copy=yes],
- [ac_cv_func_va_copy=no])])
- if test $ac_cv_func_va_copy = yes; then
- AC_DEFINE(HAVE_VA_COPY)
- fi])
- dnl Checks if function/macro __va_copy() is available
- dnl Defines HAVE__VA_COPY on success.
- AC_DEFUN(AC_FUNC__VA_COPY,
- [AC_CACHE_CHECK([for __va_copy], ac_cv_func__va_copy,
- [AC_TRY_LINK([
- #ifdef HAVE_STDARG_H
- # include <stdarg.h>
- #else
- # include <vararg.h>
- #endif],
- [
- va_list a, b;
- __va_copy(a, b);],
- [ac_cv_func__va_copy=yes],
- [ac_cv_func__va_copy=no])])
- if test $ac_cv_func__va_copy = yes; then
- AC_DEFINE(HAVE__VA_COPY)
- fi])
- dnl Checks if va_list is an array
- dnl Defines VA_LIST_IS_ARRAY on success.
- AC_DEFUN(AC_TYPE_VA_LIST,
- [AC_CACHE_CHECK([if va_list is an array], ac_cv_type_va_list_array,
- [AC_TRY_RUN([
- #ifdef HAVE_STDARG_H
- # include <stdarg.h>
- #else
- # include <vararg.h>
- #endif
- func(x)
- va_list x;
- {
- return (sizeof(x));
- }
- main()
- {
- va_list val;
- if (sizeof(val) == sizeof(void *))
- exit(1);
- if (func(val) == sizeof(void *))
- exit(0);
- exit(1);}],
- [ac_cv_type_va_list_array=yes],
- [ac_cv_type_va_list_array=no],
- [ac_cv_type_va_list_array=no])])
- if test $ac_cv_type_va_list_array = yes; then
- AC_DEFINE(VA_LIST_IS_ARRAY)
- fi])
- dnl Checks if quotactl is present as ioctl
- dnl Defines HAVE_QUOTAIOCTL on success.
- AC_DEFUN(AC_FUNC_QUOTAIOCTL,
- [AC_CACHE_CHECK([if quotactl is an ioctl], ac_cv_func_quotaioctl,
- [AC_TRY_LINK([#include <sys/types.h>
- #include <sys/fs/ufs_quota.h>],
- [struct quotctl q; ioctl(0, Q_QUOTACTL, &q)],
- [ac_cv_func_quotaioctl=yes],
- [ac_cv_func_quotaioctl=no])])
- if test $ac_cv_func_quotaioctl = yes; then
- AC_DEFINE(HAVE_QUOTAIOCTL)
- fi])
- dnl Checks if function __dtoa() is available
- dnl Defines HAVE_DTOA on success.
- AC_DEFUN(AC_FUNC_DTOA,
- [AC_CACHE_CHECK([for __dtoa], ac_cv_func_dtoa,
- [AC_TRY_LINK([extern char *__dtoa();],
- [int decpt; int sign; char *ep; char *bp;
- bp = __dtoa(0.0, 2, 6, &decpt, &sign, &ep);],
- [ac_cv_func_dtoa=yes],
- [ac_cv_func_dtoa=no])])
- if test $ac_cv_func_dtoa = yes; then
- AC_DEFINE(HAVE_DTOA)
- fi])
- dnl Checks if working ecvt() exists
- dnl Defines HAVE_ECVT on success.
- AC_DEFUN(AC_FUNC_ECVT,
- [AC_CACHE_CHECK([for working ecvt() ], ac_cv_func_ecvt,
- [AC_TRY_RUN([
- sprintf(s)
- char *s;
- {
- strcpy(s, "DEAD");
- }
- main()
- {
- int a, b;
- /* exit (strcmp("DEAD", ecvt(1.9, 2, &a, &b)) == 0);*/
- exit (strcmp("19", ecvt(1.9, 2, &a, &b)) != 0);
- }],
- [ac_cv_func_ecvt=yes],
- [ac_cv_func_ecvt=no])])
- if test $ac_cv_func_ecvt = yes; then
- AC_DEFINE(HAVE_ECVT)
- fi])
- dnl Checks if working fcvt() exists
- dnl Defines HAVE_FCVT on success.
- AC_DEFUN(AC_FUNC_FCVT,
- [AC_CACHE_CHECK([for working fcvt() ], ac_cv_func_fcvt,
- [AC_TRY_RUN([
- sprintf(s)
- char *s;
- {
- strcpy(s, "DEAD");
- }
- main()
- {
- int a, b;
- /* exit (strcmp("DEAD", fcvt(1.9, 2, &a, &b)) == 0);*/
- exit (strcmp("190", fcvt(1.9, 2, &a, &b)) != 0);
- }],
- [ac_cv_func_fcvt=yes],
- [ac_cv_func_fcvt=no])])
- if test $ac_cv_func_fcvt = yes; then
- AC_DEFINE(HAVE_FCVT)
- fi])
- dnl Checks if working gcvt() exists
- dnl Defines HAVE_GCVT on success.
- AC_DEFUN(AC_FUNC_GCVT,
- [AC_CACHE_CHECK([for working gcvt() ], ac_cv_func_gcvt,
- [AC_TRY_RUN([
- sprintf(s)
- char *s;
- {
- strcpy(s, "DEAD");
- }
- main()
- {
- char buf[32];
- /* exit (strcmp("DEAD", gcvt(1.9, 10, buf)) == 0);*/
- exit (strcmp("1.9", gcvt(1.9, 10, buf)) != 0);
- }],
- [ac_cv_func_gcvt=yes],
- [ac_cv_func_gcvt=no])])
- if test $ac_cv_func_gcvt = yes; then
- AC_DEFINE(HAVE_GCVT)
- fi])
- dnl Checks if function uname() is available
- dnl Defines HAVE_UNAME on success.
- AC_DEFUN(AC_FUNC_UNAME,
- [AC_CACHE_CHECK([for uname], ac_cv_func_uname,
- [AC_TRY_LINK([#include <sys/utsname.h>],
- [struct utsname un;
- uname(&un);],
- [ac_cv_func_uname=yes],
- [ac_cv_func_uname=no])])
- if test $ac_cv_func_uname = yes; then
- AC_DEFINE(HAVE_UNAME)
- fi])
- dnl Checks if function mlockall() is available
- dnl beware HP-UX 10.x it contains a bad mlockall() in libc
- dnl Defines HAVE_MLOCKALL on success.
- AC_DEFUN(AC_FUNC_MLOCKALL,
- [AC_CACHE_CHECK([for mlockall], ac_cv_func_mlockall,
- [AC_TRY_RUN([
- #include <sys/types.h>
- #include <sys/mman.h>
- #include <errno.h>
- main()
- {
- if (mlockall(MCL_CURRENT|MCL_FUTURE) < 0) {
- if (errno == EPERM || errno == EACCES)
- exit(0);
- exit(-1);
- }
- exit(0);
- }
- ],
- [ac_cv_func_mlockall=yes],
- [ac_cv_func_mlockall=no])])
- if test $ac_cv_func_mlockall = yes; then
- AC_DEFINE(HAVE_MLOCKALL)
- fi])
- dnl Checks if mmap() works to get shared memory
- dnl Defines HAVE_SMMAP on success.
- AC_DEFUN(AC_FUNC_SMMAP,
- [AC_CACHE_CHECK([if mmap works to get shared memory], ac_cv_func_smmap,
- [AC_TRY_RUN([
- #include <sys/types.h>
- #include <sys/mman.h>
- char *
- mkshare()
- {
- int size = 8192;
- int f;
- char *addr;
- #ifdef MAP_ANONYMOUS /* HP/UX */
- f = -1;
- addr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, f, 0);
- #else
- if ((f = open("/dev/zero", 2)) < 0)
- exit(1);
- addr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, f, 0);
- #endif
- if (addr == (char *)-1)
- exit(1);
- close(f);
- return (addr);
- }
- main()
- {
- char *addr;
-
- addr = mkshare(8192);
- *addr = 'I';
- switch (fork()) {
- case -1:
- printf("helpn"); exit(1);
- case 0: /* child */
- *addr = 'N';
- _exit(0);
- break;
- default: /* parent */
- wait(0);
- sleep(1);
- break;
- }
- if (*addr != 'N')
- exit(1);
- exit(0);
- }
- ],
- [ac_cv_func_smmap=yes],
- [ac_cv_func_smmap=no],
- [ac_cv_func_smmap=no])])
- if test $ac_cv_func_smmap = yes; then
- AC_DEFINE(HAVE_SMMAP)
- fi])
- dnl Checks if sys_siglist[] exists
- dnl Defines HAVE_SYS_SIGLIST on success.
- AC_DEFUN(AC_FUNC_SYS_SIGLIST,
- [AC_CACHE_CHECK([for sys_siglist], ac_cv_func_sys_siglist,
- [AC_TRY_RUN([
- main()
- { extern char *sys_siglist[];
- if (sys_siglist[1] == 0)
- exit(1);
- exit(0);}],
- [ac_cv_func_sys_siglist=yes],
- [ac_cv_func_sys_siglist=no])])
- if test $ac_cv_func_sys_siglist = yes; then
- AC_DEFINE(HAVE_SYS_SIGLIST)
- fi])
- dnl Checks for maximum number of bits in minor device number
- AC_DEFUN(AC_CHECK_MINOR_BITS,
- [AC_REQUIRE([AC_HEADER_MAKEDEV])dnl
- changequote(<<, >>)dnl
- define(<<AC_MACRO_NAME>>, DEV_MINOR_BITS)dnl
- dnl The cache variable name.
- define(<<AC_CV_NAME>>, ac_cv_dev_minor_bits)dnl
- changequote([, ])dnl
- AC_MSG_CHECKING(bits in minor device number)
- AC_CACHE_VAL(AC_CV_NAME,
- [AC_TRY_RUN([#include <stdio.h>
- #include <sys/types.h>
- #ifdef major
- # define _FOUND_MAJOR_
- #endif
- #ifdef MAJOR_IN_MKDEV
- # include <sys/mkdev.h>
- # define _FOUND_MAJOR_
- #endif
- #ifndef _FOUND_MAJOR_
- # ifdef MAJOR_IN_SYSMACROS
- # include <sys/sysmacros.h>
- # define _FOUND_MAJOR_
- # endif
- #endif
- #ifndef _FOUND_MAJOR_
- # if defined(hpux) || defined(__hpux__) || defined(__hpux)
- # include <sys/mknod.h>
- # define _FOUND_MAJOR_
- # endif
- #endif
- #ifndef _FOUND_MAJOR_
- # define major(dev) (((dev) >> 8) & 0xFF)
- # define minor(dev) ((dev) & 0xFF)
- # define makedev(majo, mino) (((majo) << 8) | (mino))
- #endif
- main()
- {
- long l = 1;
- int i;
- int m;
- int c = 0;
- FILE *f=fopen("conftestval", "w");
- if (!f) exit(1);
- for (i=1, m=0; i <= 32; i++, l<<=1) {
- if (minor(l) == 0 && c == 0)
- c = m;
- if (minor(l) != 0)
- m = i;
- }
- fprintf(f, "%dn", m);
- exit(0);
- }], AC_CV_NAME=`cat conftestval`, AC_CV_NAME=0, ifelse([$2], , , AC_CV_NAME=$2))])dnl
- AC_MSG_RESULT($AC_CV_NAME)
- AC_DEFINE_UNQUOTED(AC_MACRO_NAME, $AC_CV_NAME)
- undefine([AC_MACRO_NAME])dnl
- undefine([AC_CV_NAME])dnl
- ])
- dnl Checks for maximum number of bits in minor device numbers are non contiguous
- dnl Defines DEV_MINOR_NONCONTIG on success.
- AC_DEFUN(AC_CHECK_MINOR_NONCONTIG,
- [AC_REQUIRE([AC_HEADER_MAKEDEV])dnl
- AC_CACHE_CHECK([whether bits in minor device numbers are non contiguous], ac_cv_dev_minor_noncontig,
- [AC_TRY_RUN([
- #include <sys/types.h>
- #ifdef major
- # define _FOUND_MAJOR_
- #endif
- #ifdef MAJOR_IN_MKDEV
- # include <sys/mkdev.h>
- # define _FOUND_MAJOR_
- #endif
- #ifndef _FOUND_MAJOR_
- # ifdef MAJOR_IN_SYSMACROS
- # include <sys/sysmacros.h>
- # define _FOUND_MAJOR_
- # endif
- #endif
- #ifndef _FOUND_MAJOR_
- # if defined(hpux) || defined(__hpux__) || defined(__hpux)
- # include <sys/mknod.h>
- # define _FOUND_MAJOR_
- # endif
- #endif
- #ifndef _FOUND_MAJOR_
- # define major(dev) (((dev) >> 8) & 0xFF)
- # define minor(dev) ((dev) & 0xFF)
- # define makedev(majo, mino) (((majo) << 8) | (mino))
- #endif
- main()
- {
- long l = 1;
- int i;
- int m;
- int c = 0;
- for (i=1, m=0; i <= 32; i++, l<<=1) {
- if (minor(l) == 0 && c == 0)
- c = m;
- if (minor(l) != 0)
- m = i;
- }
- exit (m == c);}],
- [ac_cv_dev_minor_noncontig=yes],
- [ac_cv_dev_minor_noncontig=no])])
- if test $ac_cv_dev_minor_noncontig = yes; then
- AC_DEFINE(DEV_MINOR_NONCONTIG)
- fi])