Lost parameter added.

script/ci_install.sh

@@ -42,6 +42,7 @@ then
         mkdir -p build && cd build
 
         cmake -DCMAKE_C_COMPILER=${CC} \
+                -DCMAKE_CXX_COMPILER=${CXX} \
                 -DCMAKE_BUILD_TYPE=RelWithDebInfo \
                 -DCMAKE_INSTALL_PREFIX=/usr \
                 -DLIBCXX_ABI_UNSTABLE=ON \