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add a fatal error, and make sure c and c++ compilers work before using them

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This commit is contained in:
Bill Hoffman
2003-01-21 12:50:48 -05:00
parent 110bc04bd0
commit 2f4ea98a4c
11 changed files with 116 additions and 21 deletions
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Modules/CMakeTestCXXCompiler.cmake
+19
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# This file is used by EnableLanguage in cmGlobalGenerator to
# determine that that selected C++ compiler can actually compile
# and like the most basic of programs. If not, a fatel error
# is set and cmake stops processing commands and will not generate
# any makefiles or projects.
MESSAGE(STATUS "Check for working CXX compiler: ${CMAKE_CXX_COMPILER}")
WRITE_FILE(${CMAKE_BINARY_DIR}/CMakeTmp/testCXXCompiler.cxx "int main(){return 0;}")
TRY_COMPILE(CMAKE_CXX_COMPILER_WORKS ${CMAKE_BINARY_DIR}
${CMAKE_BINARY_DIR}/CMakeTmp/testCXXCompiler.cxx
OUTPUT_VARIABLE OUTPUT)
IF(NOT CMAKE_CXX_COMPILER_WORKS)
MESSAGE(STATUS "Check for working CXX compiler: ${CMAKE_CXX_COMPILER} -- broken")
MESSAGE(FATAL_ERROR "The C++ compiler \"${CMAKE_CXX_COMPILER}\" "
"is not able to compile a simple tests program.\nIt fails "
"with the following output:\n ${OUTPUT}\n\n"
"CMake will not be able to correctly generate this project.")
ELSE(NOT CMAKE_CXX_COMPILER_WORKS)
MESSAGE(STATUS "Check for working CXX compiler: ${CMAKE_CXX_COMPILER} -- works")
ENDIF(NOT CMAKE_CXX_COMPILER_WORKS)