travis: use ccache also for clang builds

diff --git a/_travis/configure b/_travis/configure
index bec34bf925b0ec9217655359ef97591d36d2a05c..69a61fcc8742355dbf99d6735ebd67b9d5dac8cc 100755 (executable)
--- a/_travis/configure
+++ b/_travis/configure
@@ -35,4 +35,12 @@ else
        false
 fi
 
+# travis/ccache hack for clang
+if [[ "$CXX" == "clang++" && -x /usr/bin/ccache ]] ; then
+       mkdir -p /home/travis/bin
+       ln -s /usr/bin/ccache /home/travis/bin/clang
+       ln -s /usr/bin/ccache /home/travis/bin/clang++
+       export PATH=/home/travis/bin:$PATH
+fi
+
 cmake $CMAKE_PARAMETERS ..