------- Comment #41 from rob1weld at aol dot com 2009-01-29 15:01 ------- (In reply to comment #35) > In response to comment #34, the -B option overrides GCC_EXEC_PREFIX and the > compiler being tested in the build directory is invoked with -B. > GCC_EXEC_PREFIX will only be used to find files that are not in the build > directory.
It causes a few problems and is (obviously?) incorrect. Proof: To _exactly_ reproduce the conditions may not be necessary but here they are: Compile, test and install the trunk (from early this year) on an Athlon-X2. You likely need to ./configure with additional options, I believe that "--with-tune=k8 --with-cpu=k8 --with-arch=k8" would be the minimum. The full list is at the end of this page: http://gcc.gnu.org/ml/gcc-testresults/2009-01/msg02197.html Update your source with "contrib/gcc_update" and rebuild (it is possible to use that script and not reconfigure but you may if you wish). Now, do NOT Install gcc. Run "make -i check" and when it is complete rename or copy the log. # mv gcc_build/gcc/testsuite/gcc/gcc.log gcc_build/gcc/testsuite/gcc/gcc.log.PREVIOUS Now, run "make install". Run "make -i check" and when it is complete do this: # ../gcc_trunk/contrib/compare_tests ../gcc_build/gcc/testsuite/gcc/gcc.log.PREVIOUS_1 ../gcc_build/gcc/testsuite/gcc/gcc.log New tests that FAIL: gcc.target/i386/funcspec-3.c scan-assembler call\t(.*)popcountdi2 gcc.target/i386/funcspec-3.c scan-assembler popcntq New tests that PASS: gcc.target/i386/funcspec-3.c scan-assembler call\t(.*)sse42_pop_l gcc.target/i386/funcspec-3.c scan-assembler call\t(.*)sse4a_pop_i gcc.target/i386/funcspec-3.c scan-assembler popcntl gcc.target/i386/funcspec-3.c (test for excess errors) That is the "Official Log Comparison Script" and it reports a difference on the result of "make -i check" on an un-installed gcc versus an installed gcc. Can I say "This is P1, all test results suspect, most invalid." ? Rob -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36443
