1cmake_minimum_required (VERSION 3.8)
2project(Assembler C)
3message("CTEST_FULL_OUTPUT ")
4set(CMAKE_VERBOSE_MAKEFILE 1)
5
6set(SRCS)
7
8# (at least) the following toolchains can process assembler files directly
9# and also generate assembler files from C:
10if("${CMAKE_GENERATOR}" MATCHES "Makefile|Xcode|Ninja" AND
11    NOT CMAKE_OSX_ARCHITECTURES MATCHES ";")
12  if((CMAKE_C_COMPILER_ID MATCHES "^(GNU|Clang|AppleClang|HP|SunPro|XL)$") OR (CMAKE_C_COMPILER_ID MATCHES "Intel"  AND  UNIX)
13     AND NOT (CMAKE_C_COMPILER_ID STREQUAL "Clang" AND "x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC"))
14    set(C_FLAGS "${CMAKE_C_FLAGS}")
15    separate_arguments(C_FLAGS)
16    if(CMAKE_OSX_SYSROOT AND CMAKE_C_SYSROOT_FLAG AND NOT ";${C_FLAGS};" MATCHES ";${CMAKE_C_SYSROOT_FLAG};")
17      list(APPEND C_FLAGS ${CMAKE_C_SYSROOT_FLAG} ${CMAKE_OSX_SYSROOT})
18    endif()
19    if(CMAKE_OSX_ARCHITECTURES)
20      list(APPEND C_FLAGS -arch ${CMAKE_OSX_ARCHITECTURES})
21    elseif("${CMAKE_SYSTEM_NAME};${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "Darwin;arm64")
22      list(APPEND C_FLAGS -arch arm64)
23    endif()
24    # Clang on OS X, and perhaps other compilers, do not support -g
25    # for both generating and assembling, so drop it from generating.
26    list(REMOVE_ITEM C_FLAGS -g)
27    set(SRCS main.s)
28    add_custom_command(
29      OUTPUT main.s
30      COMMAND ${CMAKE_C_COMPILER} ${C_FLAGS}
31        "$<$<CONFIG:Debug>:${CMAKE_C_COMPILE_OPTIONS_MSVC_RUNTIME_LIBRARY_MultiThreadedDebugDLL}>"
32        "$<$<NOT:$<CONFIG:Debug>>:${CMAKE_C_COMPILE_OPTIONS_MSVC_RUNTIME_LIBRARY_MultiThreadedDLL}>"
33        -S ${CMAKE_CURRENT_SOURCE_DIR}/main.c -o main.s
34      COMMAND_EXPAND_LISTS
35      DEPENDS main.c
36      VERBATIM
37      )
38  endif()
39endif()
40
41
42if(SRCS)
43  set(CMAKE_ASM_FLAGS "${CMAKE_C_FLAGS}")
44  enable_language(ASM OPTIONAL)
45else()
46  message(STATUS "No assembler enabled, using C")
47  set(SRCS main.c)
48endif()
49
50add_executable(HelloAsm ${SRCS})
51