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-rw-r--r--configure.ac1
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 660ca2a..58b4aa2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8,6 +8,7 @@ AC_PROG_CC
AC_PROG_LIBTOOL
AC_C_INLINE
AM_PROG_CC_C_O
+AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions])
# Library versioning
lt_major="0"