mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
22 lines
710 B
Plaintext
22 lines
710 B
Plaintext
#
|
|
# Check for anonymous mmap macros. This is modified from
|
|
# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_slist.html
|
|
#
|
|
AC_DEFUN([AC_HEADER_MMAP_ANONYMOUS],
|
|
[AC_CACHE_CHECK(for MAP_ANONYMOUS vs. MAP_ANON,
|
|
ac_cv_header_mmap_anon,
|
|
[ 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],[1],[Define if mmap() uses MAP_ANONYMOUS to map anonymous pages, or undefine if it uses MAP_ANON])
|
|
fi
|
|
])
|