From a42b525ea81030ba9a547c4867deb76eb96c98c0 Mon Sep 17 00:00:00 2001 From: Reid Spencer Date: Mon, 20 Sep 2004 04:08:22 +0000 Subject: 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 --- autoconf/m4/func_mmap_file.m4 | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) (limited to 'autoconf/m4/func_mmap_file.m4') 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 -#endif - -#ifdef HAVE_SYS_MMAN_H #include -#endif - -#ifdef HAVE_FCNTL_H #include -#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 -- cgit v1.1