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-rw-r--r--configure.ac3
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 4ffb5a7..0a90faa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,6 +20,9 @@ AC_INIT(Dimension, 0.0.0, tavianator@gmail.com, dimension,
[http://dmnsn.googlecode.com])
AM_INIT_AUTOMAKE([parallel-tests])
+dnl Use C99 mode with GNU extensions
+CFLAGS="-std=gnu99 $CFLAGS"
+
dnl Programs
AC_PROG_CC
AM_PROG_CC_C_O