travis: mkdir $HOME/bin if not exist

diff --git a/_travis/configure b/_travis/configure
index 91315bdadfc2a07bebfd441523e1dac4fd413d8c..c5e5d54c1683a7e9d347eccb936ee8f35fd7c6ea 100755 (executable)
--- a/_travis/configure
+++ b/_travis/configure
@@ -37,6 +37,7 @@ fi
 
 # travis/ccache hack for clang
 if [[ "$CXX" == "clang++" && -x /usr/bin/ccache ]] ; then
+       mkdir -p "$HOME/bin"
        ln -s "/usr/bin/ccache" "$HOME/bin/clang"
        ln -s "/usr/bin/ccache" "$HOME/bin/clang++"
 fi