Hi, The following makes latest cmake-2.6.4 (and earlier versions) fail: $ export CFLAGS="-Wall -Wextra -Werror" $ cmake .. -- The C compiler identification is GNU -- The CXX compiler identification is unknown -- Check for working C compiler: /usr/bin/gcc -- Check for working C compiler: /usr/bin/gcc -- broken CMake Error at /usr/share/cmake-2.6/Modules/CMakeTestCCompiler.cmake:32 (MESSAGE): The C compiler "/usr/bin/gcc" is not able to compile a simple test program.
It fails with the following output: Change Dir: /home/hendrik/tmp/cmake1/build/CMakeFiles/CMakeTmp Run Build Command:/usr/bin/make "cmTryCompileExec/fast" /usr/bin/make -f CMakeFiles/cmTryCompileExec.dir/build.make CMakeFiles/cmTryCompileExec.dir/build make[1]: Entering directory `/home/hendrik/tmp/cmake1/build/CMakeFiles/CMakeTmp' /usr/bin/cmake -E cmake_progress_report /home/hendrik/tmp/cmake1/build/CMakeFiles/CMakeTmp/CMakeFiles 1 Building C object CMakeFiles/cmTryCompileExec.dir/testCCompiler.c.o /usr/bin/gcc -Wall -Wextra -Werror -o CMakeFiles/cmTryCompileExec.dir/testCCompiler.c.o -c /home/hendrik/tmp/cmake1/build/CMakeFiles/CMakeTmp/testCCompiler.c cc1: warnings being treated as errors /home/hendrik/tmp/cmake1/build/CMakeFiles/CMakeTmp/testCCompiler.c:9: error: unused parameter ‘argv’ make[1]: Leaving directory `/home/hendrik/tmp/cmake1/build/CMakeFiles/CMakeTmp' make[1]: *** [CMakeFiles/cmTryCompileExec.dir/testCCompiler.c.o] Fehler 1 make: *** [cmTryCompileExec/fast] Fehler 2 CMake will not be able to correctly generate this project. Call Stack (most recent call first): CMakeLists.txt:2 (PROJECT) -- Configuring incomplete, errors occurred! Ok, -Wextra may be a unreal sometimes but cmake should work in such cases. Adding a line like (void)argv; like in CMakeCCompilerId.c.in solves the problem. Same game for C++ compiler. HS _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
