diff options
Diffstat (limited to 'Modules/CMakeDetermineFortranCompiler.cmake')
| -rw-r--r-- | Modules/CMakeDetermineFortranCompiler.cmake | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Modules/CMakeDetermineFortranCompiler.cmake b/Modules/CMakeDetermineFortranCompiler.cmake index 8cbaf70..392f0f1 100644 --- a/Modules/CMakeDetermineFortranCompiler.cmake +++ b/Modules/CMakeDetermineFortranCompiler.cmake @@ -98,6 +98,9 @@ else() set(CMAKE_Fortran_COMPILER_ID_TEST_FLAGS_FIRST # Get verbose output to help distinguish compilers. "-v" + + # Try compiling to an object file only, with verbose output. + "-v -c" ) set(CMAKE_Fortran_COMPILER_ID_TEST_FLAGS # Try compiling to an object file only. @@ -108,6 +111,10 @@ else() ) endif() +if(CMAKE_Fortran_COMPILER_TARGET) + set(CMAKE_Fortran_COMPILER_ID_TEST_FLAGS_FIRST "-v -c --target=${CMAKE_Fortran_COMPILER_TARGET}") +endif() + # Build a small source file to identify the compiler. if(NOT CMAKE_Fortran_COMPILER_ID_RUN) set(CMAKE_Fortran_COMPILER_ID_RUN 1) @@ -227,6 +234,49 @@ if(NOT CMAKE_Fortran_COMPILER_ID_RUN) endif() endif() +if("${CMAKE_Fortran_COMPILER_ID};${CMAKE_Fortran_SIMULATE_ID}" STREQUAL "LLVMFlang;MSVC") + # With LLVMFlang targeting the MSVC ABI we link using lld-link. + # Detect the implicit link information from the compiler driver + # so we can explicitly pass it to the linker. + include(${CMAKE_ROOT}/Modules/CMakeParseImplicitLinkInfo.cmake) + set(_LLVMFlang_COMMAND "${CMAKE_Fortran_COMPILER}" "-###" ${CMAKE_CURRENT_LIST_DIR}/CMakeFortranCompilerABI.F) + if(CMAKE_Fortran_COMPILER_TARGET) + list(APPEND _LLVMFlang_COMMAND --target=${CMAKE_Fortran_COMPILER_TARGET}) + endif() + execute_process(COMMAND ${_LLVMFlang_COMMAND} + OUTPUT_VARIABLE _LLVMFlang_OUTPUT + ERROR_VARIABLE _LLVMFlang_OUTPUT + RESULT_VARIABLE _LLVMFlang_RESULT) + string(JOIN "\" \"" _LLVMFlang_COMMAND ${_LLVMFlang_COMMAND}) + message(CONFIGURE_LOG + "Running the Fortran compiler: \"${_LLVMFlang_COMMAND}\"\n" + "${_LLVMFlang_OUTPUT}" + ) + if(_LLVMFlang_RESULT EQUAL 0) + cmake_parse_implicit_link_info("${_LLVMFlang_OUTPUT}" + CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES + CMAKE_Fortran_IMPLICIT_LINK_DIRECTORIES + CMAKE_Fortran_IMPLICIT_LINK_FRAMEWORK_DIRECTORIES + log + "${CMAKE_Fortran_IMPLICIT_OBJECT_REGEX}" + LANGUAGE Fortran) + message(CONFIGURE_LOG + "Parsed Fortran implicit link information:\n" + "${log}\n" + ) + set(_CMAKE_Fortran_IMPLICIT_LINK_INFORMATION_DETERMINED_EARLY 1) + if("x${CMAKE_Fortran_COMPILER_ARCHITECTURE_ID}" STREQUAL "xARM64") + # FIXME(LLVMFlang): It does not add `-defaultlib:` fields to object + # files to specify link dependencies on its runtime libraries. + # For now, we add them ourselves. + list(APPEND CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES "clang_rt.builtins-aarch64.lib") + endif() + endif() + unset(_LLVMFlang_COMMAND) + unset(_LLVMFlang_OUTPUT) + unset(_LLVMFlang_RESULT) +endif() + if (NOT _CMAKE_TOOLCHAIN_LOCATION) get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_Fortran_COMPILER}" PATH) endif () |