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-rw-r--r--cpp/configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/cpp/configure.ac b/cpp/configure.ac
index dbbdea5fc3..253a8f7ad7 100644
--- a/cpp/configure.ac
+++ b/cpp/configure.ac
@@ -172,7 +172,7 @@ AC_CHECK_LIB([cpg], [cpg_local_get], [libcpg=yes], [libcpg=no])
AC_CHECK_HEADER([openais/cpg.h],[cpg_h=yes],[cpg_h=no])
if test x$libcpg = xyes -a x$cpg_h = xyes; then
AM_CONDITIONAL([CLUSTER], true)
- CPPFLAGS+=-DCLUSTER
+ CPPFLAGS+=" -DCLUSTER"
else
AM_CONDITIONAL([CLUSTER], false)
LDFLAGS=$LDFLAGS_save