diff options
Diffstat (limited to 'gold/configure.ac')
| -rw-r--r-- | gold/configure.ac | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/gold/configure.ac b/gold/configure.ac index 60243d0..7757d8c 100644 --- a/gold/configure.ac +++ b/gold/configure.ac @@ -393,8 +393,22 @@ dnl host dependent. If build == host, we can check getconf LFS_CFLAGS. LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" AC_SUBST(LFS_CFLAGS) -AC_CHECK_FUNCS(chsize) -AC_REPLACE_FUNCS(pread ftruncate mremap ffsll) +AC_CHECK_HEADERS(sys/mman.h) +AC_CHECK_FUNCS(chsize mmap) +AC_REPLACE_FUNCS(pread ftruncate ffsll) + +AC_CACHE_CHECK([mremap with MREMAP_MAYMOVE], [gold_cv_lib_mremap_maymove], +[AC_LINK_IFELSE([ +AC_LANG_PROGRAM([[ +#include <sys/mman.h> +void f() { mremap (0, 0, 0, MREMAP_MAYMOVE); } +]])], [gold_cv_lib_mremap_maymove=yes], [gold_cv_lib_mremap_maymove=no])]) +if test "$gold_cv_lib_mremap_maymove" = "yes"; then + AC_DEFINE(HAVE_MREMAP, 1, + [Define to 1 if you have the mremap function with MREMAP_MAYMOVE support]) +else + AC_LIBOBJ(mremap) +fi # Link in zlib if we can. This allows us to write compressed sections. AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)]) |