From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33135) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZrUxr-0002Bj-6a for qemu-devel@nongnu.org; Wed, 28 Oct 2015 13:56:51 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZrUxn-0002vp-Va for qemu-devel@nongnu.org; Wed, 28 Oct 2015 13:56:47 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60474) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZrUxn-0002vl-QJ for qemu-devel@nongnu.org; Wed, 28 Oct 2015 13:56:43 -0400 From: John Snow Date: Wed, 28 Oct 2015 13:56:40 -0400 Message-Id: <1446055000-29150-1-git-send-email-jsnow@redhat.com> Subject: [Qemu-devel] [PATCH] configure: disallow ccache during compile tests List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, John Snow , pbonzini@redhat.com 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 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 --- configure | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/configure b/configure index 7a1d08d..9c726eb 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; -- 2.4.3