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.
5 include(LLVMExternalProjectUtils)
7 if(LLVM_MAIN_INCLUDE_DIR)
8 set(LLVM_TABLEGEN_FLAGS -I ${LLVM_MAIN_INCLUDE_DIR})
11 function(tablegen project ofn)
12 # Validate calling context.
13 if(NOT ${project}_TABLEGEN_EXE)
14 message(FATAL_ERROR "${project}_TABLEGEN_EXE not set")
17 # Use depfile instead of globbing arbitrary *.td(s)
18 # DEPFILE is available for Ninja Generator with CMake>=3.7.
19 if(CMAKE_GENERATOR STREQUAL "Ninja" AND NOT CMAKE_VERSION VERSION_LESS 3.7)
20 # Make output path relative to build.ninja, assuming located on
21 # ${CMAKE_BINARY_DIR}.
22 # CMake emits build targets as relative paths but Ninja doesn't identify
23 # absolute path (in *.d) as relative path (in build.ninja)
24 # Note that tblgen is executed on ${CMAKE_BINARY_DIR} as working directory.
25 file(RELATIVE_PATH ofn_rel
26 ${CMAKE_BINARY_DIR} ${CMAKE_CURRENT_BINARY_DIR}/${ofn})
27 set(additional_cmdline
30 WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
31 DEPFILE ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.d
36 file(GLOB local_tds "*.td")
37 file(GLOB_RECURSE global_tds "${LLVM_MAIN_INCLUDE_DIR}/llvm/*.td")
38 set(additional_cmdline
39 -o ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
43 if (IS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
44 set(LLVM_TARGET_DEFINITIONS_ABSOLUTE ${LLVM_TARGET_DEFINITIONS})
46 set(LLVM_TARGET_DEFINITIONS_ABSOLUTE
47 ${CMAKE_CURRENT_SOURCE_DIR}/${LLVM_TARGET_DEFINITIONS})
49 if (LLVM_ENABLE_DAGISEL_COV)
50 list(FIND ARGN "-gen-dag-isel" idx)
51 if( NOT idx EQUAL -1 )
52 list(APPEND LLVM_TABLEGEN_FLAGS "-instrument-coverage")
56 # We need both _TABLEGEN_TARGET and _TABLEGEN_EXE in the DEPENDS list
57 # (both the target and the file) to have .inc files rebuilt on
58 # a tablegen change, as cmake does not propagate file-level dependencies
59 # of custom targets. See the following ticket for more information:
60 # https://cmake.org/Bug/view.php?id=15858
61 # The dependency on both, the target and the file, produces the same
62 # dependency twice in the result file when
63 # ("${${project}_TABLEGEN_TARGET}" STREQUAL "${${project}_TABLEGEN_EXE}")
64 # but lets us having smaller and cleaner code here.
65 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
66 # Generate tablegen output in a temporary file.
67 COMMAND ${${project}_TABLEGEN_EXE} ${ARGN} -I ${CMAKE_CURRENT_SOURCE_DIR}
68 ${LLVM_TABLEGEN_FLAGS}
69 ${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
71 # The file in LLVM_TARGET_DEFINITIONS may be not in the current
72 # directory and local_tds may not contain it, so we must
73 # explicitly list it here:
74 DEPENDS ${${project}_TABLEGEN_TARGET} ${${project}_TABLEGEN_EXE}
75 ${local_tds} ${global_tds}
76 ${LLVM_TARGET_DEFINITIONS_ABSOLUTE}
77 COMMENT "Building ${ofn}..."
79 add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${ofn}
80 # Only update the real output file if there are any differences.
81 # This prevents recompilation of all the files depending on it if there
83 COMMAND ${CMAKE_COMMAND} -E copy_if_different
84 ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
85 ${CMAKE_CURRENT_BINARY_DIR}/${ofn}
86 DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${ofn}.tmp
87 COMMENT "Updating ${ofn}..."
90 # `make clean' must remove all those generated files:
91 set_property(DIRECTORY APPEND
92 PROPERTY ADDITIONAL_MAKE_CLEAN_FILES ${ofn}.tmp ${ofn})
94 set(TABLEGEN_OUTPUT ${TABLEGEN_OUTPUT} ${CMAKE_CURRENT_BINARY_DIR}/${ofn} PARENT_SCOPE)
95 set_source_files_properties(${CMAKE_CURRENT_BINARY_DIR}/${ofn} PROPERTIES
99 # Creates a target for publicly exporting tablegen dependencies.
100 function(add_public_tablegen_target target)
101 if(NOT TABLEGEN_OUTPUT)
102 message(FATAL_ERROR "Requires tablegen() definitions as TABLEGEN_OUTPUT.")
104 add_custom_target(${target}
105 DEPENDS ${TABLEGEN_OUTPUT})
106 if(LLVM_COMMON_DEPENDS)
107 add_dependencies(${target} ${LLVM_COMMON_DEPENDS})
109 set_target_properties(${target} PROPERTIES FOLDER "Tablegenning")
110 set(LLVM_COMMON_DEPENDS ${LLVM_COMMON_DEPENDS} ${target} PARENT_SCOPE)
113 if(LLVM_USE_HOST_TOOLS AND NOT TARGET NATIVE_LIB_LLVMTABLEGEN)
114 llvm_ExternalProject_BuildCmd(tblgen_build_cmd LLVMSupport
116 CONFIGURATION Release)
117 add_custom_command(OUTPUT LIB_LLVMTABLEGEN
118 COMMAND ${tblgen_build_cmd}
119 DEPENDS CONFIGURE_LLVM_NATIVE
120 WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
121 COMMENT "Building libLLVMTableGen for native TableGen..."
123 add_custom_target(NATIVE_LIB_LLVMTABLEGEN DEPENDS LIB_LLVMTABLEGEN)
126 macro(add_tablegen target project)
127 set(${target}_OLD_LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS})
128 set(LLVM_LINK_COMPONENTS ${LLVM_LINK_COMPONENTS} TableGen)
130 # CMake-3.9 doesn't let compilation units depend on their dependent libraries.
131 if(NOT (CMAKE_GENERATOR STREQUAL "Ninja" AND NOT CMAKE_VERSION VERSION_LESS 3.9) AND NOT XCODE)
132 # FIXME: It leaks to user, callee of add_tablegen.
133 set(LLVM_ENABLE_OBJLIB ON)
136 add_llvm_executable(${target} DISABLE_LLVM_LINK_LLVM_DYLIB ${ARGN})
137 set(LLVM_LINK_COMPONENTS ${${target}_OLD_LLVM_LINK_COMPONENTS})
139 set(${project}_TABLEGEN "${target}" CACHE
140 STRING "Native TableGen executable. Saves building one when cross-compiling.")
142 # Upgrade existing LLVM_TABLEGEN setting.
143 if(${project} STREQUAL LLVM)
144 if(${LLVM_TABLEGEN} STREQUAL tblgen)
145 set(LLVM_TABLEGEN "${target}" CACHE
146 STRING "Native TableGen executable. Saves building one when cross-compiling."
151 # Effective tblgen executable to be used:
152 set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN} PARENT_SCOPE)
153 set(${project}_TABLEGEN_TARGET ${${project}_TABLEGEN} PARENT_SCOPE)
155 if(LLVM_USE_HOST_TOOLS)
156 if( ${${project}_TABLEGEN} STREQUAL "${target}" )
157 if (NOT CMAKE_CONFIGURATION_TYPES)
158 set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/bin/${target}")
160 set(${project}_TABLEGEN_EXE "${LLVM_NATIVE_BUILD}/Release/bin/${target}")
162 set(${project}_TABLEGEN_EXE ${${project}_TABLEGEN_EXE} PARENT_SCOPE)
164 llvm_ExternalProject_BuildCmd(tblgen_build_cmd ${target}
166 CONFIGURATION Release)
167 add_custom_command(OUTPUT ${${project}_TABLEGEN_EXE}
168 COMMAND ${tblgen_build_cmd}
169 DEPENDS ${target} NATIVE_LIB_LLVMTABLEGEN
170 WORKING_DIRECTORY ${LLVM_NATIVE_BUILD}
171 COMMENT "Building native TableGen..."
173 add_custom_target(${project}-tablegen-host DEPENDS ${${project}_TABLEGEN_EXE})
174 set(${project}_TABLEGEN_TARGET ${project}-tablegen-host PARENT_SCOPE)
178 if (${project} STREQUAL LLVM AND NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
179 if(${target} IN_LIST LLVM_DISTRIBUTION_COMPONENTS OR
180 NOT LLVM_DISTRIBUTION_COMPONENTS)
181 set(export_to_llvmexports EXPORT LLVMExports)
184 install(TARGETS ${target}
185 ${export_to_llvmexports}
186 RUNTIME DESTINATION ${LLVM_TOOLS_INSTALL_DIR})
188 set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${target})