x86 and build system changes for 2023-10-18

[PULL 03/32] Revert "configure: Add workaround for ccache and clang"

Paolo Bonzini posted 32 patches 1 year, 1 month ago

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Maintainers: Paolo Bonzini <pbonzini@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, Thomas Huth <thuth@redhat.com>, Peter Maydell <peter.maydell@linaro.org>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, "Michael S. Tsirkin" <mst@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Stefano Stabellini <sstabellini@kernel.org>, Anthony Perard <anthony.perard@citrix.com>, Paul Durrant <paul@xen.org>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Michael Roth <michael.roth@amd.com>, Konstantin Kostiuk <kkostiuk@redhat.com>, John Snow <jsnow@redhat.com>, Cleber Rosa <crosa@redhat.com>, Stefan Hajnoczi <stefanha@redhat.com>, Mads Ynddal <mads@ynddal.dk>, Brian Cain <bcain@quicinc.com>, Marcelo Tosatti <mtosatti@redhat.com>, Wainer dos Santos Moschetta <wainersm@redhat.com>, Beraldo Leal <bleal@redhat.com>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, David Hildenbrand <david@redhat.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Warner Losh <imp@bsdimp.com>, Kyle Evans <kevans@freebsd.org>, Gerd Hoffmann <kraxel@redhat.com>

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[PULL 03/32] Revert "configure: Add workaround for ccache and clang"

Posted by Paolo Bonzini 1 year, 1 month ago

From: Yonggang Luo <luoyonggang@gmail.com>

This reverts commit fd0e60530f10078f488fa3e9591cc7db5732989c.

According to https://peter.eisentraut.org/blog/2014/12/01/ccache-and-clang-part-3
it's already fixed in new version of ccache

According to https://ccache.dev/manual/4.8.html#config_run_second_cpp
CCACHE_CPP2 are default to true for new version ccache

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Message-ID: <20231009165113.498-1-luoyonggang@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 configure | 32 --------------------------------
 1 file changed, 32 deletions(-)

diff --git a/configure b/configure
index 96d0dd5ffc9..d6103a0141f 100755
--- a/configure
+++ b/configure
@@ -1166,34 +1166,6 @@ EOF
   fi
 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;
-#define fn() ({ Z; })
-#define TAUT(X) ((X) == Z)
-#define PAREN(X, Y) (X == Y)
-#define ID(X) (X)
-int main(void)
-{
-    int x = 0, y = 0;
-    x = ID(x);
-    x = fn();
-    fn();
-    if (PAREN(x, y)) return 0;
-    if (TAUT(Z)) return 0;
-    return 0;
-}
-EOF
-
-if ! compile_object "-Werror"; then
-    ccache_cpp2=yes
-fi
-
 ##########################################
 # functions to probe cross compilers
 
@@ -1726,10 +1698,6 @@ if test "$default_targets" = "yes"; then
   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
 fi
 
-if test "$ccache_cpp2" = "yes"; then
-  echo "export CCACHE_CPP2=y" >> $config_host_mak
-fi
-
 # contrib/plugins configuration
 echo "# Automatically generated by configure - do not modify" > contrib/plugins/$config_host_mak
 echo "SRC_PATH=$source_path/contrib/plugins" >> contrib/plugins/$config_host_mak
-- 
2.41.0