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| author | Reid Spencer <rspencer@reidspencer.com> | 2004-09-20 04:08:22 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2004-09-20 04:08:22 +0000 |
| commit | a42b525ea81030ba9a547c4867deb76eb96c98c0 (patch) | |
| tree | 04fa5816c002b5f0b63568f15b6499b9f388bdf5 /autoconf/m4/func_mmap_file.m4 | |
| parent | 2e89ae28941f63781131ea6b0081687374e6950b (diff) | |
| download | external_llvm-a42b525ea81030ba9a547c4867deb76eb96c98c0.zip external_llvm-a42b525ea81030ba9a547c4867deb76eb96c98c0.tar.gz external_llvm-a42b525ea81030ba9a547c4867deb76eb96c98c0.tar.bz2 | |
Correct the use AC_RUN_IFELSE to ensure it builds programs correctly by
using the AC_LANG_PROGRAM macro.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16426 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf/m4/func_mmap_file.m4')
| -rw-r--r-- | autoconf/m4/func_mmap_file.m4 | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/autoconf/m4/func_mmap_file.m4 b/autoconf/m4/func_mmap_file.m4 index 96b5173..e607d0d 100644 --- a/autoconf/m4/func_mmap_file.m4 +++ b/autoconf/m4/func_mmap_file.m4 @@ -6,22 +6,18 @@ AC_DEFUN([AC_FUNC_MMAP_FILE], ac_cv_func_mmap_file, [ AC_LANG_PUSH([C]) AC_RUN_IFELSE([ -#ifdef HAVE_SYS_TYPES_H + AC_LANG_PROGRAM([[ #include <sys/types.h> -#endif - -#ifdef HAVE_SYS_MMAN_H #include <sys/mman.h> -#endif - -#ifdef HAVE_FCNTL_H #include <fcntl.h> -#endif - +]],[[ int fd; int main () { - fd = creat ("foo",0777); fd = (int) mmap (0, 1, PROT_READ, MAP_SHARED, fd, 0); unlink ("foo"); return (fd != (int) MAP_FAILED);}], - ac_cv_func_mmap_file=yes, ac_cv_func_mmap_file=no, ac_cv_func_mmap_file=no) + fd = creat ("foo",0777); + fd = (int) mmap (0, 1, PROT_READ, MAP_SHARED, fd, 0); + unlink ("foo"); + return (fd != (int) MAP_FAILED);}]])], + [ac_cv_func_mmap_file=yes], [ac_cv_func_mmap_file=no],[]) AC_LANG_POP([C]) ]) if test "$ac_cv_func_mmap_file" = yes; then |