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-rw-r--r--configure.ac4
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index b96c42aec..a31f97d20 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,6 +17,10 @@ AC_INIT([sssd],
VERSION_NUMBER,
[sssd-devel@lists.fedorahosted.org])
+m4_ifdef([AC_USE_SYSTEM_EXTENSIONS],
+ [AC_USE_SYSTEM_EXTENSIONS],
+ [AC_GNU_SOURCE])
+
CFLAGS="$CFLAGS -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE"
AC_CONFIG_SRCDIR([BUILD.txt])