| include(RunCMake) |
| |
| # Detect the compiler in use in the current environment. |
| run_cmake(FindCompiler) |
| include(${RunCMake_BINARY_DIR}/FindCompiler-build/cc.cmake) |
| if(NOT CMAKE_C_COMPILER) |
| message(FATAL_ERROR "FindCompiler provided no compiler!") |
| endif() |
| if(NOT IS_ABSOLUTE "${CMAKE_C_COMPILER}") |
| message(FATAL_ERROR "FindCompiler provided non-absolute path \"${CMAKE_C_COMPILER}\"!") |
| endif() |
| if(NOT EXISTS "${CMAKE_C_COMPILER}") |
| message(FATAL_ERROR "FindCompiler provided non-existing path \"${CMAKE_C_COMPILER}\"!") |
| endif() |
| |
| # Now that we have the full compiler path, hide CC. |
| unset(ENV{CC}) |
| |
| # Wrap around the real compiler so we can change the compiler |
| # path without changing the underlying compiler. |
| set(ccIn ${RunCMake_SOURCE_DIR}/cc.sh.in) |
| set(cc1 ${RunCMake_BINARY_DIR}/cc1.sh) |
| set(cc2 ${RunCMake_BINARY_DIR}/cc2.sh) |
| set(cc3 CMAKE_C_COMPILER-NOTFOUND) |
| configure_file(${ccIn} ${cc1} @ONLY) |
| configure_file(${ccIn} ${cc2} @ONLY) |
| |
| block() |
| set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/ChangeCompiler-build) |
| set(ENV{RunCMake_TEST} "FirstCompiler") |
| run_cmake_with_options(FirstCompiler -DCMAKE_C_COMPILER=${cc1}) |
| set(RunCMake_TEST_NO_CLEAN 1) |
| set(ENV{RunCMake_TEST} "SecondCompiler") |
| run_cmake_with_options(SecondCompiler -DCMAKE_C_COMPILER=${cc2}) |
| set(ENV{RunCMake_TEST} "EmptyCompiler") |
| run_cmake_with_options(EmptyCompiler -DCMAKE_C_COMPILER=) |
| endblock() |
| |
| block() |
| set(cc1_dot ${RunCMake_BINARY_DIR}/./cc1.sh) |
| set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/CompilerPath-build) |
| set(RunCMake_TEST_VARIANT_DESCRIPTION "-step1") |
| run_cmake_with_options(CompilerPath "-DCMAKE_C_COMPILER=${cc1_dot}" -DCACHE_ENTRY=cached) |
| set(RunCMake_TEST_NO_CLEAN 1) |
| set(RunCMake_TEST_VARIANT_DESCRIPTION "-step2") |
| run_cmake_with_options(CompilerPath "-DCMAKE_C_COMPILER=${cc1_dot}") |
| endblock() |