diff --git a/libraries/librapidcheck/librapidcheck.SlackBuild b/libraries/librapidcheck/librapidcheck.SlackBuild
index c1dcf84582..321a676432 100644
--- a/libraries/librapidcheck/librapidcheck.SlackBuild
+++ b/libraries/librapidcheck/librapidcheck.SlackBuild
@@ -26,7 +26,7 @@ cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=librapidcheck
 VERSION=${VERSION:-r1056.ff6af6f}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
 
@@ -79,6 +79,7 @@ find -L . \
 mkdir -p build
 cd build
 	cmake \
+    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
     -DRC_ENABLE_EXAMPLES=Off \
 		-DRC_ENABLE_TESTS=Off \
 		-DRC_INSTALL_ALL_EXTRAS=O \