1 #===============================================================================
3 #===============================================================================
5 cmake_minimum_required(VERSION 2.8.8)
7 if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
10 # Rely on llvm-config.
12 find_program(LLVM_CONFIG "llvm-config")
14 set(LLVM_INCLUDE_DIR ${LLVM_INCLUDE_DIR} CACHE PATH "Path to llvm/include")
15 set(LLVM_PATH ${LLVM_PATH} CACHE PATH "Path to LLVM source tree")
16 set(LLVM_MAIN_SRC_DIR ${LLVM_PATH})
17 set(LLVM_CMAKE_PATH "${LLVM_PATH}/cmake/modules")
19 message(STATUS "Found LLVM_CONFIG as ${LLVM_CONFIG}")
20 set(CONFIG_COMMAND ${LLVM_CONFIG}
25 COMMAND ${CONFIG_COMMAND}
26 RESULT_VARIABLE HAD_ERROR
27 OUTPUT_VARIABLE CONFIG_OUTPUT
31 "[ \t]*[\r\n]+[ \t]*" ";"
32 CONFIG_OUTPUT ${CONFIG_OUTPUT})
34 string(REPLACE ";" " " CONFIG_COMMAND_STR "${CONFIG_COMMAND}")
35 message(STATUS "${CONFIG_COMMAND_STR}")
36 message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
39 list(GET CONFIG_OUTPUT 0 INCLUDE_DIR)
40 list(GET CONFIG_OUTPUT 1 LLVM_OBJ_ROOT)
41 list(GET CONFIG_OUTPUT 2 MAIN_SRC_DIR)
43 set(LLVM_INCLUDE_DIR ${INCLUDE_DIR} CACHE PATH "Path to llvm/include")
44 set(LLVM_BINARY_DIR ${LLVM_OBJ_ROOT} CACHE PATH "Path to LLVM build tree")
45 set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
46 set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR}/share/llvm/cmake")
47 set(LLVM_LIT_PATH "${LLVM_PATH}/utils/lit/lit.py")
49 message(FATAL_ERROR "llvm-config not found and LLVM_MAIN_SRC_DIR not defined")
52 if(EXISTS ${LLVM_CMAKE_PATH})
53 list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
54 include("${LLVM_CMAKE_PATH}/AddLLVM.cmake")
55 include("${LLVM_CMAKE_PATH}/HandleLLVMOptions.cmake")
57 message(FATAL_ERROR "Not found: ${LLVM_CMAKE_PATH}")
60 set(PACKAGE_NAME libcxxabi)
61 set(PACKAGE_VERSION 3.6.0svn)
62 set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
63 set(PACKAGE_BUGREPORT "llvmbugs@cs.uiuc.edu")
65 if(EXISTS ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
66 set(LLVM_LIT ${LLVM_MAIN_SRC_DIR}/utils/lit/lit.py)
69 find_program(LLVM_LIT "lit.py" ${LLVM_MAIN_SRC_DIR}/utils/lit
74 # Define the default arguments to use with 'lit', and an option for the user
76 set(LIT_ARGS_DEFAULT "-sv")
78 set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
80 set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
82 # On Win32 hosts, provide an option to specify the path to the GnuWin32 tools.
83 if( WIN32 AND NOT CYGWIN )
84 set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools")
87 set(LLVM_INCLUDE_TESTS OFF)
90 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
91 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
93 set(LIBCXXABI_BUILT_STANDALONE 1)
95 set(LLVM_LIT "${CMAKE_SOURCE_DIR}/utils/lit/lit.py")
98 #===============================================================================
100 #===============================================================================
103 option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
104 option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
105 option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
106 option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
108 # Default to building a shared library so that the default options still test
109 # the libc++abi that is being built. There are two problems with testing a
110 # static libc++abi. In the case of a standalone build, the tests will link the
111 # system's libc++, which might not have been built against our libc++abi. In the
112 # case of an in tree build, libc++ will prefer a dynamic libc++abi from the
113 # system over a static libc++abi from the output directory.
114 option(LIBCXXABI_ENABLE_SHARED "Build libc++abi as a shared library." ON)
117 LIBCXXABI_LIBCXX_INCLUDES
119 PATHS ${LIBCXXABI_LIBCXX_INCLUDES}
120 ${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBCXX_INCLUDES}
121 ${LLVM_MAIN_SRC_DIR}/projects/libcxx/include
122 ${LLVM_INCLUDE_DIR}/c++/v1
125 set(LIBCXXABI_LIBCXX_INCLUDES "${LIBCXXABI_LIBCXX_INCLUDES}" CACHE STRING
126 "Specify path to libc++ includes." FORCE)
128 #===============================================================================
130 #===============================================================================
132 # Add path for custom modules
133 set(CMAKE_MODULE_PATH
134 "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
135 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
139 # Configure compiler.
142 #===============================================================================
143 # Setup Compiler Flags
144 #===============================================================================
146 # Get required flags.
147 macro(append_if list condition var)
149 list(APPEND ${list} ${var})
153 if (LIBCXXABI_HAS_NOSTDINCXX_FLAG)
154 list(APPEND LIBCXXABI_CXX_REQUIRED_FLAGS -nostdinc++)
157 append_if(LIBCXXABI_CXX_REQUIRED_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror=return-type)
160 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_W_FLAG -W)
161 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WALL_FLAG -Wall)
162 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WCHAR_SUBSCRIPTS_FLAG -Wchar-subscripts)
163 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WCONVERSION_FLAG -Wconversion)
164 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WMISMATCHED_TAGS_FLAG -Wmismatched-tags)
165 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WMISSING_BRACES_FLAG -Wmissing-braces)
166 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WNEWLINE_EOF_FLAG -Wnewline-eof)
167 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WNO_UNUSED_FUNCTION_FLAG -Wno-unused-function)
168 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WSHADOW_FLAG -Wshadow)
169 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WSHORTEN_64_TO_32_FLAG -Wshorten-64-to-32)
170 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WSIGN_COMPARE_FLAG -Wsign-compare)
171 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WSIGN_CONVERSION_FLAG -Wsign-conversion)
172 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WSTRICT_ALIASING_FLAG -Wstrict-aliasing=2)
173 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WSTRICT_OVERFLOW_FLAG -Wstrict-overflow=4)
174 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WUNUSED_PARAMETER_FLAG -Wunused-parameter)
175 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WUNUSED_VARIABLE_FLAG -Wunused-variable)
176 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings)
178 if (LIBCXXABI_ENABLE_WERROR)
179 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WERROR_FLAG -Werror)
180 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WX_FLAG -WX)
182 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_WNO_ERROR_FLAG -Wno-error)
183 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_NO_WX_FLAG -WX-)
185 if (LIBCXXABI_ENABLE_PEDANTIC)
186 append_if(LIBCXXABI_CXX_WARNING_FLAGS LIBCXXABI_HAS_PEDANTIC_FLAG -pedantic)
191 # Catches C++ exceptions only and tells the compiler to assume that extern C
192 # functions never throw a C++ exception.
193 append_if(LIBCXXABI_CXX_FEATURE_FLAGS LIBCXXABI_HAS_FSTRICT_ALIASING_FLAG -fstrict-aliasing)
194 append_if(LIBCXXABI_CXX_FEATURE_FLAGS LIBCXXABI_HAS_EHSC_FLAG -EHsc)
197 string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
198 if (LIBCXXABI_ENABLE_ASSERTIONS)
199 # MSVC doesn't like _DEBUG on release builds. See PR 4379.
201 list(APPEND LIBCXXABI_CXX_FEATURE_FLAGS -D_DEBUG)
203 # On Release builds cmake automatically defines NDEBUG, so we
204 # explicitly undefine it:
205 if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
206 list(APPEND LIBCXXABI_CXX_FEATURE_FLAGS -UNDEBUG)
209 if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
210 list(APPEND LIBCXXABI_CXX_FEATURE_FLAGS -DNDEBUG)
214 if (NOT LIBCXXABI_ENABLE_SHARED)
215 list(APPEND LIBCXXABI_CXX_FEATURE_FLAGS -D_LIBCPP_BUILD_STATIC)
218 # This is the _ONLY_ place where add_definitions is called.
220 add_definitions(-D_CRT_SECURE_NO_WARNINGS)
223 string(REPLACE ";" " " LIBCXXABI_CXX_REQUIRED_FLAGS "${LIBCXXABI_CXX_REQUIRED_FLAGS}")
224 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_REQUIRED_FLAGS}")
226 string(REPLACE ";" " " LIBCXXABI_CXX_WARNING_FLAGS "${LIBCXXABI_CXX_WARNING_FLAGS}")
227 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_WARNING_FLAGS}")
229 string(REPLACE ";" " " LIBCXXABI_CXX_FEATURE_FLAGS "${LIBCXXABI_CXX_FEATURE_FLAGS}")
230 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBCXXABI_CXX_FEATURE_FLAGS}")
232 #===============================================================================
234 #===============================================================================
236 include_directories(include)
238 # Add source code. This also contains all of the logic for deciding linker flags
240 add_subdirectory(src)
242 if (LIBCXXABI_USE_LLVM_UNWINDER)
243 add_subdirectory(src/Unwind)
246 if(NOT LIBCXXABI_ENABLE_SHARED)
247 # TODO: Fix the libc++ cmake files so that libc++abi can be statically linked.
248 # As it is now, libc++ will prefer linking against a dynamic libc++abi in the
249 # system library paths over a static libc++abi in the out directory. This
250 # would test the system library rather than the one we just built, which isn't
252 message(WARNING "The libc++abi tests are currently only valid when "
253 "LIBCXXABI_ENABLE_SHARED is on, no check target will be "
256 add_subdirectory(test)