1set(LLVM_LINK_COMPONENTS support)
2
3set(BUILDVARIABLES_SRCPATH ${CMAKE_CURRENT_SOURCE_DIR}/BuildVariables.inc.in)
4set(BUILDVARIABLES_OBJPATH ${CMAKE_CURRENT_BINARY_DIR}/BuildVariables.inc)
5
6# Add the llvm-config tool.
7add_llvm_tool(llvm-config
8  llvm-config.cpp
9  )
10
11# Compute the substitution values for various items.
12get_property(SUPPORT_SYSTEM_LIBS TARGET LLVMSupport PROPERTY LLVM_SYSTEM_LIBS)
13get_property(WINDOWSMANIFEST_SYSTEM_LIBS TARGET LLVMWindowsManifest PROPERTY LLVM_SYSTEM_LIBS)
14foreach(l ${SUPPORT_SYSTEM_LIBS} ${WINDOWSMANIFEST_SYSTEM_LIBS})
15  if(MSVC)
16    set(SYSTEM_LIBS ${SYSTEM_LIBS} "${l}.lib")
17  else()
18    if (l MATCHES "^-")
19      # If it's an option, pass it without changes.
20      set(SYSTEM_LIBS ${SYSTEM_LIBS} "${l}")
21    else()
22      # Otherwise assume it's a library name we need to link with.
23      set(SYSTEM_LIBS ${SYSTEM_LIBS} "-l${l}")
24    endif()
25  endif()
26endforeach()
27string(REPLACE ";" " " SYSTEM_LIBS "${SYSTEM_LIBS}")
28
29# Fetch target specific compile options, e.g. RTTI option
30get_property(COMPILE_FLAGS TARGET llvm-config PROPERTY COMPILE_FLAGS)
31
32# Use configure_file to create BuildVariables.inc.
33set(LLVM_SRC_ROOT ${LLVM_MAIN_SRC_DIR})
34set(LLVM_OBJ_ROOT ${LLVM_BINARY_DIR})
35set(LLVM_CPPFLAGS "${CMAKE_CPP_FLAGS} ${CMAKE_CPP_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
36set(LLVM_CFLAGS "${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${LLVM_DEFINITIONS}")
37set(LLVM_CXXFLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE}} ${COMPILE_FLAGS} ${LLVM_DEFINITIONS}")
38set(LLVM_BUILD_SYSTEM cmake)
39set(LLVM_HAS_RTTI ${LLVM_CONFIG_HAS_RTTI})
40set(LLVM_DYLIB_VERSION "${LLVM_VERSION_MAJOR}${LLVM_VERSION_SUFFIX}")
41set(LLVM_HAS_GLOBAL_ISEL "ON")
42
43# Use the C++ link flags, since they should be a superset of C link flags.
44set(LLVM_LDFLAGS "${CMAKE_CXX_LINK_FLAGS}")
45set(LLVM_BUILDMODE ${CMAKE_BUILD_TYPE})
46set(LLVM_SYSTEM_LIBS ${SYSTEM_LIBS})
47string(REPLACE ";" " " LLVM_TARGETS_BUILT "${LLVM_TARGETS_TO_BUILD}")
48llvm_canonicalize_cmake_booleans(
49  LLVM_BUILD_LLVM_DYLIB
50  LLVM_LINK_LLVM_DYLIB
51  LLVM_HAS_RTTI
52  LLVM_HAS_GLOBAL_ISEL
53  BUILD_SHARED_LIBS)
54configure_file(${BUILDVARIABLES_SRCPATH} ${BUILDVARIABLES_OBJPATH} @ONLY)
55
56# Set build-time environment(s).
57add_definitions(-DCMAKE_CFG_INTDIR="${CMAKE_CFG_INTDIR}")
58
59if(LLVM_ENABLE_MODULES)
60  target_compile_options(llvm-config PUBLIC
61    "-fmodules-ignore-macro=CMAKE_CFG_INTDIR"
62    )
63endif()
64
65# Add the dependency on the generation step.
66add_file_dependencies(${CMAKE_CURRENT_SOURCE_DIR}/llvm-config.cpp ${BUILDVARIABLES_OBJPATH})
67
68if(CMAKE_CROSSCOMPILING AND NOT LLVM_CONFIG_PATH)
69  set(LLVM_CONFIG_PATH "${LLVM_NATIVE_BUILD}/bin/llvm-config" CACHE STRING "")
70
71  add_custom_command(OUTPUT "${LLVM_CONFIG_PATH}"
72    COMMAND ${CMAKE_COMMAND} --build . --target llvm-config --config $<CONFIGURATION>
73    DEPENDS ${LLVM_NATIVE_BUILD}/CMakeCache.txt
74    WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
75    COMMENT "Building native llvm-config..."
76    USES_TERMINAL)
77  add_custom_target(NativeLLVMConfig DEPENDS ${LLVM_CONFIG_PATH})
78  add_dependencies(NativeLLVMConfig CONFIGURE_LLVM_NATIVE)
79
80  add_dependencies(llvm-config NativeLLVMConfig)
81endif()
82