1include(ExternalProject)
2include(CompilerRTUtils)
3
4function(set_target_output_directories target output_dir)
5  # For RUNTIME_OUTPUT_DIRECTORY variable, Multi-configuration generators
6  # append a per-configuration subdirectory to the specified directory.
7  # To avoid the appended folder, the configuration specific variable must be
8  # set 'RUNTIME_OUTPUT_DIRECTORY_${CONF}':
9  # RUNTIME_OUTPUT_DIRECTORY_DEBUG, RUNTIME_OUTPUT_DIRECTORY_RELEASE, ...
10  if(CMAKE_CONFIGURATION_TYPES)
11    foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
12      string(TOUPPER "${build_mode}" CONFIG_SUFFIX)
13      set_target_properties("${target}" PROPERTIES
14          "ARCHIVE_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir}
15          "LIBRARY_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir}
16          "RUNTIME_OUTPUT_DIRECTORY_${CONFIG_SUFFIX}" ${output_dir})
17    endforeach()
18  else()
19    set_target_properties("${target}" PROPERTIES
20        ARCHIVE_OUTPUT_DIRECTORY ${output_dir}
21        LIBRARY_OUTPUT_DIRECTORY ${output_dir}
22        RUNTIME_OUTPUT_DIRECTORY ${output_dir})
23  endif()
24endfunction()
25
26# Tries to add an "object library" target for a given list of OSs and/or
27# architectures with name "<name>.<arch>" for non-Darwin platforms if
28# architecture can be targeted, and "<name>.<os>" for Darwin platforms.
29# add_compiler_rt_object_libraries(<name>
30#                                  OS <os names>
31#                                  ARCHS <architectures>
32#                                  SOURCES <source files>
33#                                  CFLAGS <compile flags>
34#                                  DEFS <compile definitions>)
35function(add_compiler_rt_object_libraries name)
36  cmake_parse_arguments(LIB "" "" "OS;ARCHS;SOURCES;CFLAGS;DEFS" ${ARGN})
37  set(libnames)
38  if(APPLE)
39    foreach(os ${LIB_OS})
40      set(libname "${name}.${os}")
41      set(libnames ${libnames} ${libname})
42      set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS})
43      list_intersect(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
44    endforeach()
45  else()
46    foreach(arch ${LIB_ARCHS})
47      set(libname "${name}.${arch}")
48      set(libnames ${libnames} ${libname})
49      set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS})
50      if(NOT CAN_TARGET_${arch})
51        message(FATAL_ERROR "Architecture ${arch} can't be targeted")
52        return()
53      endif()
54    endforeach()
55  endif()
56
57  foreach(libname ${libnames})
58    add_library(${libname} OBJECT ${LIB_SOURCES})
59    set_target_compile_flags(${libname}
60      ${CMAKE_CXX_FLAGS} ${extra_cflags_${libname}} ${LIB_CFLAGS})
61    set_property(TARGET ${libname} APPEND PROPERTY
62      COMPILE_DEFINITIONS ${LIB_DEFS})
63    set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT Libraries")
64    if(APPLE)
65      set_target_properties(${libname} PROPERTIES
66        OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
67    endif()
68  endforeach()
69endfunction()
70
71# Takes a list of object library targets, and a suffix and appends the proper
72# TARGET_OBJECTS string to the output variable.
73# format_object_libs(<output> <suffix> ...)
74macro(format_object_libs output suffix)
75  foreach(lib ${ARGN})
76    list(APPEND ${output} $<TARGET_OBJECTS:${lib}.${suffix}>)
77  endforeach()
78endmacro()
79
80# Adds static or shared runtime for a list of architectures and operating
81# systems and puts it in the proper directory in the build and install trees.
82# add_compiler_rt_runtime(<name>
83#                         {STATIC|SHARED}
84#                         ARCHS <architectures>
85#                         OS <os list>
86#                         SOURCES <source files>
87#                         CFLAGS <compile flags>
88#                         LINKFLAGS <linker flags>
89#                         DEFS <compile definitions>
90#                         LINK_LIBS <linked libraries> (only for shared library)
91#                         OBJECT_LIBS <object libraries to use as sources>
92#                         PARENT_TARGET <convenience parent target>)
93function(add_compiler_rt_runtime name type)
94  if(NOT type MATCHES "^(STATIC|SHARED)$")
95    message(FATAL_ERROR "type argument must be STATIC or SHARED")
96    return()
97  endif()
98  cmake_parse_arguments(LIB
99    ""
100    "PARENT_TARGET"
101    "OS;ARCHS;SOURCES;CFLAGS;LINKFLAGS;DEFS;LINK_LIBS;OBJECT_LIBS"
102    ${ARGN})
103  set(libnames)
104  if(APPLE)
105    foreach(os ${LIB_OS})
106      if(type STREQUAL "STATIC")
107        set(libname "${name}_${os}")
108      else()
109        set(libname "${name}_${os}_dynamic")
110        set(extra_linkflags_${libname} ${DARWIN_${os}_LINKFLAGS} ${LIB_LINKFLAGS})
111      endif()
112      list_intersect(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
113      if(LIB_ARCHS_${libname})
114        list(APPEND libnames ${libname})
115        set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS} ${LIB_CFLAGS})
116        set(output_name_${libname} ${libname}${COMPILER_RT_OS_SUFFIX})
117        set(sources_${libname} ${LIB_SOURCES})
118        format_object_libs(sources_${libname} ${os} ${LIB_OBJECT_LIBS})
119      endif()
120    endforeach()
121  else()
122    foreach(arch ${LIB_ARCHS})
123      if(NOT CAN_TARGET_${arch})
124        message(FATAL_ERROR "Architecture ${arch} can't be targeted")
125        return()
126      endif()
127      if(type STREQUAL "STATIC")
128        set(libname "${name}-${arch}")
129        set(output_name_${libname} ${libname}${COMPILER_RT_OS_SUFFIX})
130      else()
131        set(libname "${name}-dynamic-${arch}")
132        set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS} ${LIB_CFLAGS})
133        set(extra_linkflags_${libname} ${TARGET_${arch}_LINKFLAGS} ${LIB_LINKFLAGS})
134        if(WIN32)
135          set(output_name_${libname} ${name}_dynamic-${arch}${COMPILER_RT_OS_SUFFIX})
136        else()
137          set(output_name_${libname} ${name}-${arch}${COMPILER_RT_OS_SUFFIX})
138        endif()
139      endif()
140      set(sources_${libname} ${LIB_SOURCES})
141      format_object_libs(sources_${libname} ${arch} ${LIB_OBJECT_LIBS})
142      set(libnames ${libnames} ${libname})
143      set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS} ${LIB_CFLAGS})
144    endforeach()
145  endif()
146
147  if(NOT libnames)
148    return()
149  endif()
150
151  if(LIB_PARENT_TARGET)
152    # If the parent targets aren't created we should create them
153    if(NOT TARGET ${LIB_PARENT_TARGET})
154      add_custom_target(${LIB_PARENT_TARGET})
155    endif()
156    if(NOT TARGET install-${LIB_PARENT_TARGET})
157      # The parent install target specifies the parent component to scrape up
158      # anything not installed by the individual install targets, and to handle
159      # installation when running the multi-configuration generators.
160      add_custom_target(install-${LIB_PARENT_TARGET}
161                        DEPENDS ${LIB_PARENT_TARGET}
162                        COMMAND "${CMAKE_COMMAND}"
163                                -DCMAKE_INSTALL_COMPONENT=${LIB_PARENT_TARGET}
164                                -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
165      set_target_properties(install-${LIB_PARENT_TARGET} PROPERTIES
166                            FOLDER "Compiler-RT Misc")
167    endif()
168  endif()
169
170  foreach(libname ${libnames})
171    # If you are using a multi-configuration generator we don't generate
172    # per-library install rules, so we fall back to the parent target COMPONENT
173    if(CMAKE_CONFIGURATION_TYPES AND LIB_PARENT_TARGET)
174      set(COMPONENT_OPTION COMPONENT ${LIB_PARENT_TARGET})
175    else()
176      set(COMPONENT_OPTION COMPONENT ${libname})
177    endif()
178
179    add_library(${libname} ${type} ${sources_${libname}})
180    set_target_compile_flags(${libname} ${extra_cflags_${libname}})
181    set_target_link_flags(${libname} ${extra_linkflags_${libname}})
182    set_property(TARGET ${libname} APPEND PROPERTY
183                COMPILE_DEFINITIONS ${LIB_DEFS})
184    set_target_output_directories(${libname} ${COMPILER_RT_LIBRARY_OUTPUT_DIR})
185    set_target_properties(${libname} PROPERTIES
186        OUTPUT_NAME ${output_name_${libname}})
187    set_target_properties(${libname} PROPERTIES FOLDER "Compiler-RT Runtime")
188    if(LIB_LINK_LIBS AND ${type} STREQUAL "SHARED")
189      target_link_libraries(${libname} ${LIB_LINK_LIBS})
190    endif()
191    install(TARGETS ${libname}
192      ARCHIVE DESTINATION ${COMPILER_RT_LIBRARY_INSTALL_DIR}
193              ${COMPONENT_OPTION}
194      LIBRARY DESTINATION ${COMPILER_RT_LIBRARY_INSTALL_DIR}
195              ${COMPONENT_OPTION}
196      RUNTIME DESTINATION ${COMPILER_RT_LIBRARY_INSTALL_DIR}
197              ${COMPONENT_OPTION})
198
199    # We only want to generate per-library install targets if you aren't using
200    # an IDE because the extra targets get cluttered in IDEs.
201    if(NOT CMAKE_CONFIGURATION_TYPES)
202      add_custom_target(install-${libname}
203                        DEPENDS ${libname}
204                        COMMAND "${CMAKE_COMMAND}"
205                                -DCMAKE_INSTALL_COMPONENT=${libname}
206                                -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
207      # If you have a parent target specified, we bind the new install target
208      # to the parent install target.
209      if(LIB_PARENT_TARGET)
210        add_dependencies(install-${LIB_PARENT_TARGET} install-${libname})
211      endif()
212    endif()
213    if(APPLE)
214      set_target_properties(${libname} PROPERTIES
215      OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
216    endif()
217
218    if(type STREQUAL "SHARED")
219      rt_externalize_debuginfo(${libname})
220    endif()
221  endforeach()
222  if(LIB_PARENT_TARGET)
223    add_dependencies(${LIB_PARENT_TARGET} ${libnames})
224  endif()
225endfunction()
226
227# when cross compiling, COMPILER_RT_TEST_COMPILER_CFLAGS help
228# in compilation and linking of unittests.
229string(REPLACE " " ";" COMPILER_RT_UNITTEST_CFLAGS "${COMPILER_RT_TEST_COMPILER_CFLAGS}")
230set(COMPILER_RT_UNITTEST_LINKFLAGS ${COMPILER_RT_UNITTEST_CFLAGS})
231
232# Unittests support.
233set(COMPILER_RT_GTEST_PATH ${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest)
234set(COMPILER_RT_GTEST_SOURCE ${COMPILER_RT_GTEST_PATH}/src/gtest-all.cc)
235set(COMPILER_RT_GTEST_CFLAGS
236  -DGTEST_NO_LLVM_RAW_OSTREAM=1
237  -DGTEST_HAS_RTTI=0
238  -I${COMPILER_RT_GTEST_PATH}/include
239  -I${COMPILER_RT_GTEST_PATH}
240)
241
242append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 COMPILER_RT_UNITTEST_CFLAGS)
243
244if(MSVC)
245  # clang doesn't support exceptions on Windows yet.
246  list(APPEND COMPILER_RT_UNITTEST_CFLAGS -D_HAS_EXCEPTIONS=0)
247
248  # We should teach clang to understand "#pragma intrinsic", see PR19898.
249  list(APPEND COMPILER_RT_UNITTEST_CFLAGS -Wno-undefined-inline)
250
251  # Clang doesn't support SEH on Windows yet.
252  list(APPEND COMPILER_RT_GTEST_CFLAGS -DGTEST_HAS_SEH=0)
253
254  # gtest use a lot of stuff marked as deprecated on Windows.
255  list(APPEND COMPILER_RT_GTEST_CFLAGS -Wno-deprecated-declarations)
256
257  # Visual Studio 2012 only supports up to 8 template parameters in
258  # std::tr1::tuple by default, but gtest requires 10
259  if(MSVC_VERSION EQUAL 1700)
260    list(APPEND COMPILER_RT_GTEST_CFLAGS -D_VARIADIC_MAX=10)
261  endif()
262endif()
263
264# Link objects into a single executable with COMPILER_RT_TEST_COMPILER,
265# using specified link flags. Make executable a part of provided
266# test_suite.
267# add_compiler_rt_test(<test_suite> <test_name>
268#                      SUBDIR <subdirectory for binary>
269#                      OBJECTS <object files>
270#                      DEPS <deps (e.g. runtime libs)>
271#                      LINK_FLAGS <link flags>)
272macro(add_compiler_rt_test test_suite test_name)
273  cmake_parse_arguments(TEST "" "SUBDIR" "OBJECTS;DEPS;LINK_FLAGS" "" ${ARGN})
274  set(output_bin ${CMAKE_CURRENT_BINARY_DIR})
275  if(TEST_SUBDIR)
276    set(output_bin "${output_bin}/${TEST_SUBDIR}")
277  endif()
278  if(CMAKE_CONFIGURATION_TYPES)
279    set(output_bin "${output_bin}/${CMAKE_CFG_INTDIR}")
280  endif()
281  set(output_bin "${output_bin}/${test_name}")
282  if(MSVC)
283    set(output_bin "${output_bin}.exe")
284  endif()
285
286  # Use host compiler in a standalone build, and just-built Clang otherwise.
287  if(NOT COMPILER_RT_STANDALONE_BUILD)
288    list(APPEND TEST_DEPS clang)
289  endif()
290  # If we're not on MSVC, include the linker flags from CMAKE but override them
291  # with the provided link flags. This ensures that flags which are required to
292  # link programs at all are included, but the changes needed for the test
293  # trump. With MSVC we can't do that because CMake is set up to run link.exe
294  # when linking, not the compiler. Here, we hack it to use the compiler
295  # because we want to use -fsanitize flags.
296  if(NOT MSVC)
297    set(TEST_LINK_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${TEST_LINK_FLAGS}")
298    separate_arguments(TEST_LINK_FLAGS)
299  endif()
300  add_custom_target(${test_name}
301    COMMAND ${COMPILER_RT_TEST_COMPILER} ${TEST_OBJECTS}
302            -o "${output_bin}"
303            ${TEST_LINK_FLAGS}
304    DEPENDS ${TEST_DEPS})
305  set_target_properties(${test_name} PROPERTIES FOLDER "Compiler-RT Tests")
306
307  # Make the test suite depend on the binary.
308  add_dependencies(${test_suite} ${test_name})
309endmacro()
310
311macro(add_compiler_rt_resource_file target_name file_name component)
312  set(src_file "${CMAKE_CURRENT_SOURCE_DIR}/${file_name}")
313  set(dst_file "${COMPILER_RT_OUTPUT_DIR}/${file_name}")
314  add_custom_command(OUTPUT ${dst_file}
315    DEPENDS ${src_file}
316    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src_file} ${dst_file}
317    COMMENT "Copying ${file_name}...")
318  add_custom_target(${target_name} DEPENDS ${dst_file})
319  # Install in Clang resource directory.
320  install(FILES ${file_name}
321    DESTINATION ${COMPILER_RT_INSTALL_PATH}
322    COMPONENT ${component})
323  add_dependencies(${component} ${target_name})
324
325  set_target_properties(${target_name} PROPERTIES FOLDER "Compiler-RT Misc")
326endmacro()
327
328macro(add_compiler_rt_script name)
329  set(dst ${COMPILER_RT_EXEC_OUTPUT_DIR}/${name})
330  set(src ${CMAKE_CURRENT_SOURCE_DIR}/${name})
331  add_custom_command(OUTPUT ${dst}
332    DEPENDS ${src}
333    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
334    COMMENT "Copying ${name}...")
335  add_custom_target(${name} DEPENDS ${dst})
336  install(FILES ${dst}
337    PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE
338    DESTINATION ${COMPILER_RT_INSTALL_PATH}/bin)
339endmacro(add_compiler_rt_script src name)
340
341# Builds custom version of libc++ and installs it in <prefix>.
342# Can be used to build sanitized versions of libc++ for running unit tests.
343# add_custom_libcxx(<name> <prefix>
344#                   DEPS <list of build deps>
345#                   CFLAGS <list of compile flags>)
346macro(add_custom_libcxx name prefix)
347  if(NOT COMPILER_RT_HAS_LIBCXX_SOURCES)
348    message(FATAL_ERROR "libcxx not found!")
349  endif()
350
351  cmake_parse_arguments(LIBCXX "" "" "DEPS;CFLAGS" ${ARGN})
352  foreach(flag ${LIBCXX_CFLAGS})
353    set(flagstr "${flagstr} ${flag}")
354  endforeach()
355  set(LIBCXX_CFLAGS ${flagstr})
356
357  if(NOT COMPILER_RT_STANDALONE_BUILD)
358    list(APPEND LIBCXX_DEPS clang)
359  endif()
360
361  ExternalProject_Add(${name}
362    PREFIX ${prefix}
363    SOURCE_DIR ${COMPILER_RT_LIBCXX_PATH}
364    CMAKE_ARGS -DCMAKE_MAKE_PROGRAM:STRING=${CMAKE_MAKE_PROGRAM}
365               -DCMAKE_C_COMPILER=${COMPILER_RT_TEST_COMPILER}
366               -DCMAKE_CXX_COMPILER=${COMPILER_RT_TEST_CXX_COMPILER}
367               -DCMAKE_C_FLAGS=${LIBCXX_CFLAGS}
368               -DCMAKE_CXX_FLAGS=${LIBCXX_CFLAGS}
369               -DCMAKE_BUILD_TYPE=Release
370               -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
371               -DLLVM_PATH=${LLVM_MAIN_SRC_DIR}
372    LOG_BUILD 1
373    LOG_CONFIGURE 1
374    LOG_INSTALL 1
375    )
376  set_target_properties(${name} PROPERTIES EXCLUDE_FROM_ALL TRUE)
377
378  ExternalProject_Add_Step(${name} force-reconfigure
379    DEPENDERS configure
380    ALWAYS 1
381    )
382
383  ExternalProject_Add_Step(${name} clobber
384    COMMAND ${CMAKE_COMMAND} -E remove_directory <BINARY_DIR>
385    COMMAND ${CMAKE_COMMAND} -E make_directory <BINARY_DIR>
386    COMMENT "Clobberring ${name} build directory..."
387    DEPENDERS configure
388    DEPENDS ${LIBCXX_DEPS}
389    )
390endmacro()
391
392function(rt_externalize_debuginfo name)
393  if(NOT COMPILER_RT_EXTERNALIZE_DEBUGINFO)
394    return()
395  endif()
396
397  if(NOT COMPILER_RT_EXTERNALIZE_DEBUGINFO_SKIP_STRIP)
398    set(strip_command COMMAND xcrun strip -Sl $<TARGET_FILE:${name}>)
399  endif()
400
401  if(APPLE)
402    if(CMAKE_CXX_FLAGS MATCHES "-flto"
403      OR CMAKE_CXX_FLAGS_${uppercase_CMAKE_BUILD_TYPE} MATCHES "-flto")
404
405      set(lto_object ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/${name}-lto.o)
406      set_property(TARGET ${name} APPEND_STRING PROPERTY
407        LINK_FLAGS " -Wl,-object_path_lto -Wl,${lto_object}")
408    endif()
409    add_custom_command(TARGET ${name} POST_BUILD
410      COMMAND xcrun dsymutil $<TARGET_FILE:${name}>
411      ${strip_command})
412  else()
413    message(FATAL_ERROR "COMPILER_RT_EXTERNALIZE_DEBUGINFO isn't implemented for non-darwin platforms!")
414  endif()
415endfunction()
416