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 a7d5d6532ab3f97efcf34045e67d939a5e5f0729..01098842e992456aedf1bc0db49021cd7ccf2bb9 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -211,6 +211,7 @@ 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@<:@@:>@ = \"$version\";" >src/version.c
     AC_CHECK_TOOL(GPERF, gperf)
     if test -z "$GPERF"; then