Fix warning during configure in out of tree build (#479)

../configure: line 2250: src/version.cpp: No such file or directory

diff --git a/configure.ac b/configure.ac
index 35c2c66e16250846dfe803ba618d826d312a4f8b..df57c5a869e0161cb232a03f9dea9686e3c2317f 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -12,6 +12,7 @@ if test ! -f $srcdir/dev_mode_disabled; then
     AC_CONFIG_FILES([dev.mk])
     include_dev_mk='include dev.mk'
     version=`(git --git-dir=$srcdir/.git describe --dirty 2>/dev/null || echo vunknown) | sed -e 's/v//' -e 's/-/+/' -e 's/-/_/g'`
+    mkdir -p src
     echo "extern const char CCACHE_VERSION@<:@@:>@; const char CCACHE_VERSION@<:@@:>@ = \"$version\";" >src/version.cpp
 else
     dev_mode=no