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| author | Reid Spencer <rspencer@reidspencer.com> | 2004-09-19 22:31:49 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2004-09-19 22:31:49 +0000 |
| commit | 12de17db02dca026fea1e2aee57ebdca97784292 (patch) | |
| tree | edfdc281c36966a7fa9f81a3533acee319d0bd7f /autoconf/m4/header_mmap_anonymous.m4 | |
| parent | 8eacb0c3a7489b86a7f5523ff4992452bc0b7941 (diff) | |
| download | llvm-12de17db02dca026fea1e2aee57ebdca97784292.tar.gz llvm-12de17db02dca026fea1e2aee57ebdca97784292.tar.bz2 llvm-12de17db02dca026fea1e2aee57ebdca97784292.tar.xz | |
Bring the script out of the dark ages and into modern autoconfness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16415 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'autoconf/m4/header_mmap_anonymous.m4')
| -rw-r--r-- | autoconf/m4/header_mmap_anonymous.m4 | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/autoconf/m4/header_mmap_anonymous.m4 b/autoconf/m4/header_mmap_anonymous.m4 index 409189b0ee..541926b996 100644 --- a/autoconf/m4/header_mmap_anonymous.m4 +++ b/autoconf/m4/header_mmap_anonymous.m4 @@ -5,18 +5,17 @@ AC_DEFUN([AC_HEADER_MMAP_ANONYMOUS], [AC_CACHE_CHECK(for MAP_ANONYMOUS vs. MAP_ANON, ac_cv_header_mmap_anon, -[AC_LANG_SAVE - AC_LANG_C - AC_TRY_COMPILE([#include <sys/mman.h> - #include <unistd.h> - #include <fcntl.h>], - [mmap (0, 1, PROT_READ, MAP_ANONYMOUS, -1, 0); return (0);], - ac_cv_header_mmap_anon=yes, ac_cv_header_mmap_anon=no) - AC_LANG_RESTORE +[ AC_LANG_PUSH([C]) + AC_COMPILE_IFELSE([AC_LANG_PROGRAM( + [[#include <sys/mman.h> +#include <unistd.h> +#include <fcntl.h>]], + [[mmap (0, 1, PROT_READ, MAP_ANONYMOUS, -1, 0); return (0);]])], + ac_cv_header_mmap_anon=yes, + ac_cv_header_mmap_anon=no) + AC_LANG_POP([C]) ]) if test "$ac_cv_header_mmap_anon" = yes; then AC_DEFINE([HAVE_MMAP_ANONYMOUS],[],[Define if mmap() uses MAP_ANONYMOUS to map anonymous pages, or undefine if it uses MAP_ANON]) fi ]) - - |