1include(AddLLVM)
2include(ExternalProject)
3include(CompilerRTUtils)
4
5# Tries to add an "object library" target for a given list of OSs and/or
6# architectures with name "<name>.<arch>" for non-Darwin platforms if
7# architecture can be targeted, and "<name>.<os>" for Darwin platforms.
8# add_compiler_rt_object_libraries(<name>
9#                                  OS <os names>
10#                                  ARCHS <architectures>
11#                                  SOURCES <source files>
12#                                  CFLAGS <compile flags>
13#                                  DEFS <compile definitions>)
14function(add_compiler_rt_object_libraries name)
15  cmake_parse_arguments(LIB "" "" "OS;ARCHS;SOURCES;CFLAGS;DEFS" ${ARGN})
16  set(libnames)
17  if(APPLE)
18    foreach(os ${LIB_OS})
19      set(libname "${name}.${os}")
20      set(libnames ${libnames} ${libname})
21      set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS})
22      list_union(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
23    endforeach()
24  else()
25    foreach(arch ${LIB_ARCHS})
26      set(libname "${name}.${arch}")
27      set(libnames ${libnames} ${libname})
28      set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS})
29      if(NOT CAN_TARGET_${arch})
30        message(FATAL_ERROR "Architecture ${arch} can't be targeted")
31        return()
32      endif()
33    endforeach()
34  endif()
35
36  foreach(libname ${libnames})
37    add_library(${libname} OBJECT ${LIB_SOURCES})
38    set_target_compile_flags(${libname}
39      ${CMAKE_CXX_FLAGS} ${extra_cflags_${libname}} ${LIB_CFLAGS})
40    set_property(TARGET ${libname} APPEND PROPERTY
41      COMPILE_DEFINITIONS ${LIB_DEFS})
42    if(APPLE)
43      set_target_properties(${libname} PROPERTIES
44        OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
45    endif()
46  endforeach()
47endfunction()
48
49# Takes a list of object library targets, and a suffix and appends the proper
50# TARGET_OBJECTS string to the output variable.
51# format_object_libs(<output> <suffix> ...)
52macro(format_object_libs output suffix)
53  foreach(lib ${ARGN})
54    list(APPEND ${output} $<TARGET_OBJECTS:${lib}.${suffix}>)
55  endforeach()
56endmacro()
57
58# Adds static or shared runtime for a list of architectures and operating
59# systems and puts it in the proper directory in the build and install trees.
60# add_compiler_rt_runtime(<name>
61#                         {STATIC|SHARED}
62#                         ARCHS <architectures>
63#                         OS <os list>
64#                         SOURCES <source files>
65#                         CFLAGS <compile flags>
66#                         LINKFLAGS <linker flags>
67#                         DEFS <compile definitions>
68#                         LINK_LIBS <linked libraries> (only for shared library)
69#                         OBJECT_LIBS <object libraries to use as sources>
70#                         PARENT_TARGET <convenience parent target>)
71function(add_compiler_rt_runtime name type)
72  if(NOT type MATCHES "^(STATIC|SHARED)$")
73    message(FATAL_ERROR "type argument must be STATIC or SHARED")
74    return()
75  endif()
76  cmake_parse_arguments(LIB
77    ""
78    "PARENT_TARGET"
79    "OS;ARCHS;SOURCES;CFLAGS;LINKFLAGS;DEFS;LINK_LIBS;OBJECT_LIBS"
80    ${ARGN})
81  set(libnames)
82  if(APPLE)
83    foreach(os ${LIB_OS})
84      if(type STREQUAL "STATIC")
85        set(libname "${name}_${os}")
86      else()
87        set(libname "${name}_${os}_dynamic")
88        set(extra_linkflags_${libname} ${DARWIN_${os}_LINKFLAGS} ${LIB_LINKFLAGS})
89      endif()
90      list_union(LIB_ARCHS_${libname} DARWIN_${os}_ARCHS LIB_ARCHS)
91      if(LIB_ARCHS_${libname})
92        list(APPEND libnames ${libname})
93        set(extra_cflags_${libname} ${DARWIN_${os}_CFLAGS} ${LIB_CFLAGS})
94        set(output_name_${libname} ${libname}${COMPILER_RT_OS_SUFFIX})
95        set(sources_${libname} ${LIB_SOURCES})
96        format_object_libs(sources_${libname} ${os} ${LIB_OBJECT_LIBS})
97      endif()
98    endforeach()
99  else()
100    foreach(arch ${LIB_ARCHS})
101      if(NOT CAN_TARGET_${arch})
102        message(FATAL_ERROR "Architecture ${arch} can't be targeted")
103        return()
104      endif()
105      if(type STREQUAL "STATIC")
106        set(libname "${name}-${arch}")
107        set(output_name_${libname} ${libname}${COMPILER_RT_OS_SUFFIX})
108      else()
109        set(libname "${name}-dynamic-${arch}")
110        set(extra_linkflags_${libname} ${TARGET_${arch}_CFLAGS} ${LIB_CFLAGS} ${LIB_LINKFLAGS})
111        if(WIN32)
112          set(output_name_${libname} ${name}_dynamic-${arch}${COMPILER_RT_OS_SUFFIX})
113        else()
114          set(output_name_${libname} ${name}-${arch}${COMPILER_RT_OS_SUFFIX})
115        endif()
116      endif()
117      set(sources_${libname} ${LIB_SOURCES})
118      format_object_libs(sources_${libname} ${arch} ${LIB_OBJECT_LIBS})
119      set(libnames ${libnames} ${libname})
120      set(extra_cflags_${libname} ${TARGET_${arch}_CFLAGS} ${LIB_CFLAGS})
121    endforeach()
122  endif()
123
124  if(NOT libnames)
125    return()
126  endif()
127
128  if(LIB_PARENT_TARGET)
129    set(COMPONENT_OPTION COMPONENT ${LIB_PARENT_TARGET})
130  endif()
131
132  foreach(libname ${libnames})
133    add_library(${libname} ${type} ${sources_${libname}})
134    set_target_compile_flags(${libname} ${extra_cflags_${libname}})
135    set_target_link_flags(${libname} ${extra_linkflags_${libname}})
136    set_property(TARGET ${libname} APPEND PROPERTY
137                COMPILE_DEFINITIONS ${LIB_DEFS})
138    set_target_properties(${libname} PROPERTIES
139        ARCHIVE_OUTPUT_DIRECTORY ${COMPILER_RT_LIBRARY_OUTPUT_DIR}
140        LIBRARY_OUTPUT_DIRECTORY ${COMPILER_RT_LIBRARY_OUTPUT_DIR}
141        RUNTIME_OUTPUT_DIRECTORY ${COMPILER_RT_LIBRARY_OUTPUT_DIR})
142    set_target_properties(${libname} PROPERTIES
143        OUTPUT_NAME ${output_name_${libname}})
144    if(LIB_LINK_LIBS AND ${type} STREQUAL "SHARED")
145      target_link_libraries(${libname} ${LIB_LINK_LIBS})
146    endif()
147    install(TARGETS ${libname}
148      ARCHIVE DESTINATION ${COMPILER_RT_LIBRARY_INSTALL_DIR}
149              ${COMPONENT_OPTION}
150      LIBRARY DESTINATION ${COMPILER_RT_LIBRARY_INSTALL_DIR}
151              ${COMPONENT_OPTION}
152      RUNTIME DESTINATION ${COMPILER_RT_LIBRARY_INSTALL_DIR}
153              ${COMPONENT_OPTION})
154    if(APPLE)
155      set_target_properties(${libname} PROPERTIES
156      OSX_ARCHITECTURES "${LIB_ARCHS_${libname}}")
157    endif()
158  endforeach()
159  if(LIB_PARENT_TARGET)
160    add_dependencies(${LIB_PARENT_TARGET} ${libnames})
161  endif()
162endfunction()
163
164set(COMPILER_RT_TEST_CFLAGS)
165
166# Unittests support.
167set(COMPILER_RT_GTEST_PATH ${LLVM_MAIN_SRC_DIR}/utils/unittest/googletest)
168set(COMPILER_RT_GTEST_SOURCE ${COMPILER_RT_GTEST_PATH}/src/gtest-all.cc)
169set(COMPILER_RT_GTEST_CFLAGS
170  -DGTEST_NO_LLVM_RAW_OSTREAM=1
171  -DGTEST_HAS_RTTI=0
172  -I${COMPILER_RT_GTEST_PATH}/include
173  -I${COMPILER_RT_GTEST_PATH}
174)
175
176append_list_if(COMPILER_RT_DEBUG -DSANITIZER_DEBUG=1 COMPILER_RT_TEST_CFLAGS)
177
178if(MSVC)
179  # clang doesn't support exceptions on Windows yet.
180  list(APPEND COMPILER_RT_TEST_CFLAGS -D_HAS_EXCEPTIONS=0)
181
182  # We should teach clang to understand "#pragma intrinsic", see PR19898.
183  list(APPEND COMPILER_RT_TEST_CFLAGS -Wno-undefined-inline)
184
185  # Clang doesn't support SEH on Windows yet.
186  list(APPEND COMPILER_RT_GTEST_CFLAGS -DGTEST_HAS_SEH=0)
187
188  # gtest use a lot of stuff marked as deprecated on Windows.
189  list(APPEND COMPILER_RT_GTEST_CFLAGS -Wno-deprecated-declarations)
190
191  # Visual Studio 2012 only supports up to 8 template parameters in
192  # std::tr1::tuple by default, but gtest requires 10
193  if(MSVC_VERSION EQUAL 1700)
194    list(APPEND COMPILER_RT_GTEST_CFLAGS -D_VARIADIC_MAX=10)
195  endif()
196endif()
197
198# Link objects into a single executable with COMPILER_RT_TEST_COMPILER,
199# using specified link flags. Make executable a part of provided
200# test_suite.
201# add_compiler_rt_test(<test_suite> <test_name>
202#                      SUBDIR <subdirectory for binary>
203#                      OBJECTS <object files>
204#                      DEPS <deps (e.g. runtime libs)>
205#                      LINK_FLAGS <link flags>)
206macro(add_compiler_rt_test test_suite test_name)
207  cmake_parse_arguments(TEST "" "SUBDIR" "OBJECTS;DEPS;LINK_FLAGS" "" ${ARGN})
208  if(TEST_SUBDIR)
209    set(output_bin "${CMAKE_CURRENT_BINARY_DIR}/${TEST_SUBDIR}/${test_name}")
210  else()
211    set(output_bin "${CMAKE_CURRENT_BINARY_DIR}/${test_name}")
212  endif()
213  if(MSVC)
214    set(output_bin "${output_bin}.exe")
215  endif()
216  # Use host compiler in a standalone build, and just-built Clang otherwise.
217  if(NOT COMPILER_RT_STANDALONE_BUILD)
218    list(APPEND TEST_DEPS clang)
219  endif()
220  # If we're not on MSVC, include the linker flags from CMAKE but override them
221  # with the provided link flags. This ensures that flags which are required to
222  # link programs at all are included, but the changes needed for the test
223  # trump. With MSVC we can't do that because CMake is set up to run link.exe
224  # when linking, not the compiler. Here, we hack it to use the compiler
225  # because we want to use -fsanitize flags.
226  if(NOT MSVC)
227    set(TEST_LINK_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${TEST_LINK_FLAGS}")
228    separate_arguments(TEST_LINK_FLAGS)
229  endif()
230  add_custom_target(${test_name}
231    COMMAND ${COMPILER_RT_TEST_COMPILER} ${TEST_OBJECTS}
232            -o "${output_bin}"
233            ${TEST_LINK_FLAGS}
234    DEPENDS ${TEST_DEPS})
235  # Make the test suite depend on the binary.
236  add_dependencies(${test_suite} ${test_name})
237endmacro()
238
239macro(add_compiler_rt_resource_file target_name file_name)
240  set(src_file "${CMAKE_CURRENT_SOURCE_DIR}/${file_name}")
241  set(dst_file "${COMPILER_RT_OUTPUT_DIR}/${file_name}")
242  add_custom_command(OUTPUT ${dst_file}
243    DEPENDS ${src_file}
244    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src_file} ${dst_file}
245    COMMENT "Copying ${file_name}...")
246  add_custom_target(${target_name} DEPENDS ${dst_file})
247  # Install in Clang resource directory.
248  install(FILES ${file_name} DESTINATION ${COMPILER_RT_INSTALL_PATH})
249endmacro()
250
251macro(add_compiler_rt_script name)
252  set(dst ${COMPILER_RT_EXEC_OUTPUT_DIR}/${name})
253  set(src ${CMAKE_CURRENT_SOURCE_DIR}/${name})
254  add_custom_command(OUTPUT ${dst}
255    DEPENDS ${src}
256    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
257    COMMENT "Copying ${name}...")
258  add_custom_target(${name} DEPENDS ${dst})
259  install(FILES ${dst}
260    PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE
261    DESTINATION ${COMPILER_RT_INSTALL_PATH}/bin)
262endmacro(add_compiler_rt_script src name)
263
264# Builds custom version of libc++ and installs it in <prefix>.
265# Can be used to build sanitized versions of libc++ for running unit tests.
266# add_custom_libcxx(<name> <prefix>
267#                   DEPS <list of build deps>
268#                   CFLAGS <list of compile flags>)
269macro(add_custom_libcxx name prefix)
270  if(NOT COMPILER_RT_HAS_LIBCXX_SOURCES)
271    message(FATAL_ERROR "libcxx not found!")
272  endif()
273
274  cmake_parse_arguments(LIBCXX "" "" "DEPS;CFLAGS" ${ARGN})
275  foreach(flag ${LIBCXX_CFLAGS})
276    set(flagstr "${flagstr} ${flag}")
277  endforeach()
278  set(LIBCXX_CFLAGS ${flagstr})
279
280  if(NOT COMPILER_RT_STANDALONE_BUILD)
281    list(APPEND LIBCXX_DEPS clang)
282  endif()
283
284  ExternalProject_Add(${name}
285    PREFIX ${prefix}
286    SOURCE_DIR ${COMPILER_RT_LIBCXX_PATH}
287    CMAKE_ARGS -DCMAKE_C_COMPILER=${COMPILER_RT_TEST_COMPILER}
288               -DCMAKE_CXX_COMPILER=${COMPILER_RT_TEST_COMPILER}
289               -DCMAKE_C_FLAGS=${LIBCXX_CFLAGS}
290               -DCMAKE_CXX_FLAGS=${LIBCXX_CFLAGS}
291               -DCMAKE_BUILD_TYPE=Release
292               -DCMAKE_INSTALL_PREFIX:PATH=<INSTALL_DIR>
293    LOG_BUILD 1
294    LOG_CONFIGURE 1
295    LOG_INSTALL 1
296    )
297  set_target_properties(${name} PROPERTIES EXCLUDE_FROM_ALL TRUE)
298
299  ExternalProject_Add_Step(${name} force-reconfigure
300    DEPENDERS configure
301    ALWAYS 1
302    )
303
304  ExternalProject_Add_Step(${name} clobber
305    COMMAND ${CMAKE_COMMAND} -E remove_directory <BINARY_DIR>
306    COMMAND ${CMAKE_COMMAND} -E make_directory <BINARY_DIR>
307    COMMENT "Clobberring ${name} build directory..."
308    DEPENDERS configure
309    DEPENDS ${LIBCXX_DEPS}
310    )
311endmacro()
312