1# LLVM_TARGET_DEFINITIONS must contain the name of the .td file to process.
2# Extra parameters for `tblgen' may come after `ofn' parameter.
3# Adds the name of the generated file to TABLEGEN_OUTPUT.
4
5function(tablegen project ofn)
6  # Use the list by include_directories().
7  get_property(include_dirs DIRECTORY PROPERTY INCLUDE_DIRECTORIES)
8
9  # Collect possible dependent *.td(s).
10  # FIXME: It is far from optimal.
11  file(GLOB dependent_tds "*.td")
12  foreach(inc ${include_dirs})
13    file(GLOB tds "${inc}/*.td")
14    list(APPEND dependent_tds ${tds})
15  endforeach()
16
17  if (IS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
18    set(LLVM_TARGET_DEFINITIONS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
19  else()
20    set(LLVM_TARGET_DEFINITIONS_ABSOLUTE
21      ${CMAKE_CURRENT_SOURCE_DIR}/${LLVM_TARGET_DEFINITIONS})
22  endif()
23  foreach(inc ${include_dirs})
24    list(APPEND TABLEGEN_INCLUDE_DIRECTORIES -I ${inc})
25  endforeach()
26  add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
27    # Generate tablegen output in a temporary file.
28    COMMAND ${${project}_TABLEGEN_EXE} ${ARGN}
29    -I ${CMAKE_CURRENT_SOURCE_DIR}
30    ${TABLEGEN_INCLUDE_DIRECTORIES}
31    ${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
32    -o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
33    # The file in LLVM_TARGET_DEFINITIONS may be not in the current
34    # directory and local_tds may not contain it, so we must
35    # explicitly list it here:
36    DEPENDS ${${project}_TABLEGEN_EXE} ${dependent_tds}
37    ${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
38    COMMENT "Building ${ofn}..."
39    )
40  add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}
41    # Only update the real output file if there are any differences.
42    # This prevents recompilation of all the files depending on it if there
43    # aren't any.
44    COMMAND ${CMAKE_COMMAND} -E copy_if_different
45        ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
46        ${CMAKE_CURRENT_BINARY_DIR}/${ofn}
47    DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
48    COMMENT "Updating ${ofn}..."
49    )
50
51  # `make clean' must remove all those generated files:
52  set_property(DIRECTORY APPEND
53    PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${ofn}.tmp ${ofn})
54
55  set(TABLEGEN_OUTPUT ${TABLEGEN_OUTPUT} ${CMAKE_CURRENT_BINARY_DIR}/${ofn} PARENT_SCOPE)
56  set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${ofn}
57    PROPERTIES GENERATED 1)
58endfunction(tablegen)
59
60macro(add_public_tablegen_target target)
61  # Creates a target for publicly exporting tablegen dependencies.
62  if( TABLEGEN_OUTPUT )
63    add_custom_target(${target}
64      DEPENDS ${TABLEGEN_OUTPUT})
65    if (LLVM_COMMON_DEPENDS)
66      add_dependencies(${target} ${LLVM_COMMON_DEPENDS})
67    endif ()
68    set_target_properties(${target} PROPERTIES FOLDER "Tablegenning")
69    list(APPEND LLVM_COMMON_DEPENDS ${target} intrinsics_gen)
70  endif( TABLEGEN_OUTPUT )
71endmacro()
72
73if(CMAKE_CROSSCOMPILING)
74  set(CX_NATIVE_TG_DIR "${CMAKE_BINARY_DIR}/native")
75
76  add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}
77    COMMAND ${CMAKE_COMMAND} -E make_directory ${CX_NATIVE_TG_DIR}
78    COMMENT "Creating ${CX_NATIVE_TG_DIR}...")
79
80  add_custom_command(OUTPUT ${CX_NATIVE_TG_DIR}/CMakeCache.txt
81    COMMAND ${CMAKE_COMMAND} -UMAKE_TOOLCHAIN_FILE -DCMAKE_BUILD_TYPE=Release
82                             -DLLVM_BUILD_POLLY=OFF
83                             -G "${CMAKE_GENERATOR}" ${CMAKE_SOURCE_DIR}
84    WORKING_DIRECTORY ${CX_NATIVE_TG_DIR}
85    DEPENDS ${CX_NATIVE_TG_DIR}
86    COMMENT "Configuring native TableGen...")
87
88  add_custom_target(ConfigureNativeTableGen DEPENDS ${CX_NATIVE_TG_DIR}/CMakeCache.txt)
89
90  set_directory_properties(PROPERTIES ADDITIONAL_MAKE_CLEAN_FILES ${CX_NATIVE_TG_DIR})
91endif()
92
93macro(add_tablegen target project)
94  set(${target}_OLD_LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS})
95  set(LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS} TableGen)
96  add_llvm_utility(${target} ${ARGN})
97  set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS})
98
99  set(${project}_TABLEGEN "${target}" CACHE
100      STRING "Native TableGen executable. Saves building one when cross-compiling.")
101
102  # Upgrade existing LLVM_TABLEGEN setting.
103  if(${project} STREQUAL LLVM)
104    if(${LLVM_TABLEGEN} STREQUAL tblgen)
105      set(LLVM_TABLEGEN "${target}" CACHE
106          STRING "Native TableGen executable. Saves building one when cross-compiling."
107          FORCE)
108    endif()
109  endif()
110
111  # Effective tblgen executable to be used:
112  set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN} PARENT_SCOPE)
113
114  if(CMAKE_CROSSCOMPILING)
115    if( ${${project}_TABLEGEN} STREQUAL "${target}" )
116      set(${project}_TABLEGEN_EXE "${CX_NATIVE_TG_DIR}/bin/${target}")
117      set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE)
118
119      add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE}
120        COMMAND ${CMAKE_BUILD_TOOL} ${target}
121        DEPENDS ${CX_NATIVE_TG_DIR}/CMakeCache.txt
122        WORKING_DIRECTORY ${CX_NATIVE_TG_DIR}
123        COMMENT "Building native TableGen...")
124      add_custom_target(${project}NativeTableGen DEPENDS ${${project}_TABLEGEN_EXE})
125      add_dependencies(${project}NativeTableGen ConfigureNativeTableGen)
126
127      add_dependencies(${target} ${project}NativeTableGen)
128    endif()
129  endif()
130
131  if( MINGW )
132    target_link_libraries(${target} imagehlp psapi shell32)
133    if(CMAKE_SIZEOF_VOID_P MATCHES "8")
134      set_target_properties(${target} PROPERTIES LINK_FLAGS -Wl,--stack,16777216)
135    endif(CMAKE_SIZEOF_VOID_P MATCHES "8")
136  endif( MINGW )
137  if( LLVM_ENABLE_THREADS AND HAVE_LIBPTHREAD AND NOT BEOS )
138    target_link_libraries(${target} pthread)
139  endif()
140
141  if (${project} STREQUAL LLVM AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
142    install(TARGETS ${target} RUNTIME DESTINATION bin)
143  endif()
144endmacro()
145