From 5e4dfd3d4e87e0464d599ecef06aa8fe78420a9b Mon Sep 17 00:00:00 2001 From: John Snow Date: Wed, 28 Oct 2015 13:56:40 -0400 Subject: [PATCH] configure: disallow ccache during compile tests If the user is using ccache during the configuration step, it may interfere with some of the configuration tests, particularly the "Is ccache interfering with macro analysis" step, which is a bit of a poetic problem. 1) Disallow ccache from reading from the cache during configure, but don't disable it entirely to allow us to see if it causes other problems. 2) Force off CCACHE_CPP2 during the ccache test to get a deterministic answer over whether or not we need to enable that feature later. Signed-off-by: John Snow Message-Id: <1446055000-29150-1-git-send-email-jsnow@redhat.com> Signed-off-by: Paolo Bonzini --- configure | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/configure b/configure index 7a1d08dc4a..9c726ebada 100755 --- a/configure +++ b/configure @@ -8,6 +8,9 @@ CLICOLOR_FORCE= GREP_OPTIONS= unset CLICOLOR_FORCE GREP_OPTIONS +# Don't allow CCACHE, if present, to use cached results of compile tests! +export CCACHE_RECACHE=yes + # Temporary directory used for files created while # configure runs. Since it is in the build directory # we can safely blow away any previous version of it @@ -4412,6 +4415,7 @@ fi # check if ccache is interfering with # semantic analysis of macros +unset CCACHE_CPP2 ccache_cpp2=no cat > $TMPC << EOF static const int Z = 1;