1 # See www/CMake.html for instructions on how to build libcxx with CMake.
3 #===============================================================================
5 #===============================================================================
8 cmake_minimum_required(VERSION 2.8)
10 set(PACKAGE_NAME libcxx)
11 set(PACKAGE_VERSION trunk-svn)
12 set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
13 set(PACKAGE_BUGREPORT "llvmbugs@cs.uiuc.edu")
15 # Add path for custom modules
18 "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
19 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
22 # Require out of source build.
23 include(MacroEnsureOutOfSourceBuild)
24 MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
25 "${PROJECT_NAME} requires an out of source build. Please create a separate
26 build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there."
29 #===============================================================================
31 #===============================================================================
34 option(LIBCXX_ENABLE_EXCEPTIONS "Use exceptions." ON)
35 option(LIBCXX_ENABLE_RTTI "Use run time type information." ON)
36 option(LIBCXX_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
37 option(LIBCXX_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
38 option(LIBCXX_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
39 option(LIBCXX_ENABLE_CXX0X "Enable -std=c++0x and use of c++0x language features if the compiler supports it." ON)
40 option(LIBCXX_ENABLE_SHARED "Build libc++ as a shared library." ON)
42 #===============================================================================
44 #===============================================================================
48 get_host_triple(LIBCXX_HOST_TRIPLE
53 set(LIBCXX_HOST_TRIPLE ${LIBCXX_HOST_TRIPLE} CACHE STRING "Host triple.")
54 get_target_triple(LIBCXX_TARGET_TRIPLE
59 set(LIBCXX_TARGET_TRIPLE ${LIBCXX_TARGET_TRIPLE} CACHE STRING "Target triple.")
64 #===============================================================================
65 # Setup Compiler Flags
66 #===============================================================================
69 # On all systems the system c++ standard library headers need to be excluded.
71 # MSVC only has -X, which disables all default includes; including the crt.
72 # Thus, we do nothing and hope we don't accidentally include any of the C++
75 if (LIBCXX_HAS_NOSTDINCXX_FLAG)
76 set(LIBCXX_CXX_REQUIRED_FLAGS -nostdinc++)
78 if (LIBCXX_ENABLE_CXX0X AND LIBCXX_HAS_STDCXX0X_FLAG)
79 list(APPEND LIBCXX_CXX_REQUIRED_FLAGS -std=c++0x)
83 macro(append_if list condition var)
85 list(APPEND ${list} ${var})
90 append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WALL_FLAG -Wall)
91 append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_W_FLAG -W)
92 append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WNO_UNUSED_PARAMETER_FLAG -Wno-unused-parameter)
93 append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WWRITE_STRINGS_FLAG -Wwrite-strings)
94 append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WNO_LONG_LONG_FLAG -Wno-long-long)
95 if (LIBCXX_ENABLE_WERROR)
96 append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WERROR_FLAG -Werror)
97 append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_WX_FLAG -WX)
99 if (LIBCXX_ENABLE_PEDANTIC)
100 append_if(LIBCXX_CXX_WARNING_FLAGS LIBCXX_HAS_PEDANTIC_FLAG -pedantic)
105 if (LIBCXX_ENABLE_EXCEPTIONS)
106 # Catches C++ exceptions only and tells the compiler to assume that extern C
107 # functions never throw a C++ exception.
108 append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_EHSC_FLAG -EHsc)
110 list(APPEND LIBCXX_CXX_FEATURE_FLAGS -D_LIBCPP_NO_EXCEPTIONS)
111 append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_NO_EHS_FLAG -EHs-)
112 append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_NO_EHA_FLAG -EHa-)
113 append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_FNO_EXCEPTIONS_FLAG -fno-exceptions)
116 if (NOT LIBCXX_ENABLE_RTTI)
117 list(APPEND LIBCXX_CXX_FEATURE_FLAGS -D_LIBCPP_NO_RTTI)
118 append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_NO_GR_FLAG -GR-)
119 append_if(LIBCXX_CXX_FEATURE_FLAGS LIBCXX_HAS_FNO_RTTI_FLAG -fno-rtti)
122 string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
123 if (LIBCXX_ENABLE_ASSERTIONS)
124 # MSVC doesn't like _DEBUG on release builds. See PR 4379.
126 list(APPEND LIBCXX_CXX_FEATURE_FLAGS -D_DEBUG)
128 # On Release builds cmake automatically defines NDEBUG, so we
129 # explicitly undefine it:
130 if (uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
131 list(APPEND LIBCXX_CXX_FEATURE_FLAGS -UNDEBUG)
134 if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE")
135 list(APPEND LIBCXX_CXX_FEATURE_FLAGS -DNDEBUG)
139 # This is the _ONLY_ place where add_definitions is called.
141 ${LIBCXX_CXX_REQUIRED_FLAGS}
142 ${LIBCXX_CXX_WARNING_FLAGS}
143 ${LIBCXX_CXX_FEATURE_FLAGS}
146 #===============================================================================
148 #===============================================================================
150 include_directories(include)
152 # Add source code. This also contains all of the logic for deciding linker flags
154 add_subdirectory(lib)
156 #===============================================================================
158 #===============================================================================
160 add_subdirectory(test)