mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
c90eff97f7
function, not the whole main function. This problem resulted during conversion of scripts to the new autoconf standard. The effect was that the mmap_file test would fail and if it does there is currently an #ifdef'd #error that causes compilation to fail. Bad, bad, bad. llvm-svn: 16462
27 lines
679 B
Plaintext
27 lines
679 B
Plaintext
#
|
|
# Check for the ability to mmap a file.
|
|
#
|
|
AC_DEFUN([AC_FUNC_MMAP_FILE],
|
|
[AC_CACHE_CHECK(for mmap of files,
|
|
ac_cv_func_mmap_file,
|
|
[ AC_LANG_PUSH([C])
|
|
AC_RUN_IFELSE([
|
|
AC_LANG_PROGRAM([[
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
#include <fcntl.h>
|
|
]],[[
|
|
int fd;
|
|
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])
|
|
AC_LANG_POP([C])
|
|
])
|
|
if test "$ac_cv_func_mmap_file" = yes; then
|
|
AC_DEFINE([HAVE_MMAP_FILE],[],[Define if mmap() can map files into memory])
|
|
AC_SUBST(MMAP_FILE,[yes])
|
|
fi
|
|
])
|