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1if(CMAKE_LLAsm_COMPILER_FORCED)
2  # The compiler configuration was forced by the user.
3  # Assume the user has configured all compiler information.
4  set(CMAKE_LLAsm_COMPILER_WORKS TRUE)
5  return()
6endif()
7
8include(CMakeTestCompilerCommon)
9
10# Remove any cached result from an older CMake version.
11# We now store this in CMakeCCompiler.cmake.
12unset(CMAKE_LLAsm_COMPILER_WORKS CACHE)
13
14# This file is used by EnableLanguage in cmGlobalGenerator to
15# determine that that selected llvm assembler can actually compile
16# and link the most basic of programs. If not, a fatal error
17# is set and cmake stops processing commands and will not generate
18# any makefiles or projects.
19if(NOT CMAKE_LLAsm_COMPILER_WORKS)
20  PrintTestCompilerStatus("LLAsm" "")
21  file(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testLLAsmCompiler.ll
22    "define i32 @test() {\n"
23    "ret i32 0 }\n" )
24  try_compile(CMAKE_LLAsm_COMPILER_WORKS ${CMAKE_BINARY_DIR}
25    ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testLLAsmCompiler.ll
26    # We never generate executable so bypass the link step
27    CMAKE_FLAGS -DCMAKE_LLAsm_LINK_EXECUTABLE='echo'
28    OUTPUT_VARIABLE __CMAKE_LLAsm_COMPILER_OUTPUT)
29  # Move result from cache to normal variable.
30  set(CMAKE_LLAsm_COMPILER_WORKS ${CMAKE_LLAsm_COMPILER_WORKS})
31  unset(CMAKE_LLAsm_COMPILER_WORKS CACHE)
32  set(LLAsm_TEST_WAS_RUN 1)
33endif()
34
35if(NOT CMAKE_LLAsm_COMPILER_WORKS)
36  PrintTestCompilerStatus("LLAsm" " -- broken")
37  file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
38    "Determining if the LLAsm compiler works failed with "
39    "the following output:\n${__CMAKE_LLAsm_COMPILER_OUTPUT}\n\n")
40  message(FATAL_ERROR "The LLAsm compiler \"${CMAKE_LLAsm_COMPILER}\" "
41    "is not able to compile a simple test program.\nIt fails "
42    "with the following output:\n ${__CMAKE_LLAsm_COMPILER_OUTPUT}\n\n"
43    "CMake will not be able to correctly generate this project.")
44else()
45  if(LLAsm_TEST_WAS_RUN)
46    PrintTestCompilerStatus("LLAsm" " -- works")
47    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
48      "Determining if the LLAsm compiler works passed with "
49      "the following output:\n${__CMAKE_LLAsm_COMPILER_OUTPUT}\n\n")
50  endif()
51
52  include(${CMAKE_PLATFORM_INFO_DIR}/CMakeLLAsmCompiler.cmake)
53
54endif()
55
56unset(__CMAKE_LLAsm_COMPILER_OUTPUT)
57