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-rw-r--r--configure.ac27
1 files changed, 27 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index d7aafbf..7a28800 100644
--- a/configure.ac
+++ b/configure.ac
@@ -95,6 +95,33 @@ case "$GLOBAL_CFLAGS" in
AC_DEFINE([HAVE_FVISIBILITY], [1], [Define if compiled with -fvisibility=hidden])
esac
+# check for large file support
+AC_SYS_LARGEFILE
+LFS_CFLAGS=''
+if test "$enable_largefile" != no; then
+ if test "$ac_cv_sys_file_offset_bits" != 'no'; then
+ LFS_CFLAGS="$LFS_CFLAGS -D_FILE_OFFSET_BITS=$ac_cv_sys_file_offset_bits"
+ else
+ AC_MSG_CHECKING(for native large file support)
+ AC_RUN_IFELSE([AC_LANG_SOURCE([#include <unistd.h>
+ int main (int argc, char **argv)
+ {
+ exit(!(sizeof(off_t) == 8));
+ }])],
+ [ac_cv_sys_file_offset_bits=64; AC_DEFINE(_FILE_OFFSET_BITS,64)
+ AC_MSG_RESULT(yes)],
+ [AC_MSG_RESULT(no)])
+ fi
+ if test "$ac_cv_sys_large_files" != 'no'; then
+ LFS_CFLAGS="$LFS_CFLAGS -D_LARGE_FILES=1"
+ fi
+ AC_FUNC_FSEEKO
+ if test "$ac_cv_sys_largefile_source" != 'no'; then
+ LFS_CFLAGS="$LFS_CFLAGS -D_LARGEFILE_SOURCE=1"
+ fi
+fi
+AC_SUBST(LFS_CFLAGS)
+
m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
AC_OUTPUT([