blob: 59d7629764623935e9519bc73cbcab7f30e44876 [file] [log] [blame]
Michael J. Spencerf5799be2010-12-10 19:47:54 +00001# See www/CMake.html for instructions on how to build libcxx with CMake.
2
3#===============================================================================
4# Setup Project
5#===============================================================================
Chris Bieneman752cd332016-05-31 20:21:52 +00006cmake_minimum_required(VERSION 3.4.3)
Michael J. Spencerf5799be2010-12-10 19:47:54 +00007
Eric Fiselier8e0dec72015-01-26 21:56:45 +00008if(POLICY CMP0042)
9 cmake_policy(SET CMP0042 NEW) # Set MACOSX_RPATH=YES by default
10endif()
Eric Fiselier10ed6c32015-07-30 22:30:34 +000011if(POLICY CMP0022)
12 cmake_policy(SET CMP0022 NEW) # Required when interacting with LLVM and Clang
13endif()
14
Michael J. Spencerf5799be2010-12-10 19:47:54 +000015# Add path for custom modules
16set(CMAKE_MODULE_PATH
Michael J. Spencerf5799be2010-12-10 19:47:54 +000017 "${CMAKE_CURRENT_SOURCE_DIR}/cmake"
18 "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules"
Eric Fiselierd888cf52015-12-30 03:39:03 +000019 ${CMAKE_MODULE_PATH}
Michael J. Spencerf5799be2010-12-10 19:47:54 +000020 )
21
Saleem Abdulrasool163333f2016-02-08 03:50:18 +000022
Eric Fiselier28349f92016-11-14 02:43:12 +000023if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
Saleem Abdulrasool163333f2016-02-08 03:50:18 +000024 project(libcxx CXX C)
25
26 set(PACKAGE_NAME libcxx)
Eugene Zelenko772d1142016-08-08 18:01:50 +000027 set(PACKAGE_VERSION 4.0.0svn)
Saleem Abdulrasool163333f2016-02-08 03:50:18 +000028 set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
29 set(PACKAGE_BUGREPORT "llvm-bugs@lists.llvm.org")
Eric Fiselier28349f92016-11-14 02:43:12 +000030
31 # Find the LLVM sources and simulate LLVM CMake options.
32 include(HandleOutOfTreeLLVM)
Eugene Zelenko772d1142016-08-08 18:01:50 +000033endif()
Saleem Abdulrasool163333f2016-02-08 03:50:18 +000034
Petr Hosekdaf3a692017-01-16 00:33:07 +000035if (LIBCXX_STANDALONE_BUILD)
36 include(FindPythonInterp)
37 if( NOT PYTHONINTERP_FOUND )
38 message(WARNING "Failed to find python interpreter. "
39 "The libc++ test suite will be disabled.")
40 set(LLVM_INCLUDE_TESTS OFF)
41 endif()
42endif()
43
Saleem Abdulrasool163333f2016-02-08 03:50:18 +000044# Require out of source build.
45include(MacroEnsureOutOfSourceBuild)
46MACRO_ENSURE_OUT_OF_SOURCE_BUILD(
47 "${PROJECT_NAME} requires an out of source build. Please create a separate
48 build directory and run 'cmake /path/to/${PROJECT_NAME} [options]' there."
49 )
50
Eric Fiseliercc1f65c2017-01-14 06:06:47 +000051if (MSVC)
52 set(LIBCXX_TARGETING_MSVC ON)
53else()
54 set(LIBCXX_TARGETING_MSVC OFF)
55endif()
56
Michael J. Spencerf5799be2010-12-10 19:47:54 +000057#===============================================================================
58# Setup CMake Options
59#===============================================================================
Eric Fiselier309a50a2016-09-07 01:15:10 +000060include(CMakeDependentOption)
Michael J. Spencerf5799be2010-12-10 19:47:54 +000061
Eric Fiselier10ed6c32015-07-30 22:30:34 +000062# Basic options ---------------------------------------------------------------
Eric Fiselierf9e7bf32017-01-24 12:26:01 +000063option(LIBCXX_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
Eric Fiselier10ed6c32015-07-30 22:30:34 +000064option(LIBCXX_ENABLE_SHARED "Build libc++ as a shared library." ON)
Petr Hosek9e49a332016-08-08 22:57:25 +000065option(LIBCXX_ENABLE_STATIC "Build libc++ as a static library." ON)
Eric Fiselier27cb2f12016-05-03 21:30:18 +000066option(LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY "Build libc++experimental.a" ON)
Eric Fiselierc7979582016-06-17 19:46:40 +000067option(LIBCXX_ENABLE_FILESYSTEM
68 "Build filesystem as part of libc++experimental.a" ${LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY})
Eric Fiselier10ed6c32015-07-30 22:30:34 +000069option(LIBCXX_INCLUDE_TESTS "Build the libc++ tests." ${LLVM_INCLUDE_TESTS})
Eric Fiselier3aa54782016-10-30 22:53:00 +000070
Eric Fiselier3aa54782016-10-30 22:53:00 +000071# Benchmark options -----------------------------------------------------------
Eric Fiselier8b4a3052016-08-29 19:50:49 +000072option(LIBCXX_INCLUDE_BENCHMARKS "Build the libc++ benchmarks and their dependancies" ON)
Eric Fiselier3aa54782016-10-30 22:53:00 +000073set(LIBCXX_BENCHMARK_NATIVE_STDLIB "" CACHE STRING
74 "Build the benchmarks against the specified native STL.
75 The value must be one of libc++/libstdc++")
76set(LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN "" CACHE STRING
77 "Use alternate GCC toolchain when building the native benchmarks")
78
79if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
80 if (NOT (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libc++"
81 OR LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++"))
82 message(FATAL_ERROR "Invalid value for LIBCXX_BENCHMARK_NATIVE_STDLIB: "
83 "'${LIBCXX_BENCHMARK_NATIVE_STDLIB}'")
84 endif()
85endif()
86
Eric Fiselierb17bb062015-08-22 19:40:49 +000087option(LIBCXX_INCLUDE_DOCS "Build the libc++ documentation." ${LLVM_INCLUDE_DOCS})
Eric Fiselier10ed6c32015-07-30 22:30:34 +000088set(LIBCXX_LIBDIR_SUFFIX "${LLVM_LIBDIR_SUFFIX}" CACHE STRING
89 "Define suffix of library directory name (32/64)")
90option(LIBCXX_INSTALL_HEADERS "Install the libc++ headers." ON)
Eric Fiselierd77135f2015-08-26 20:18:21 +000091option(LIBCXX_INSTALL_LIBRARY "Install the libc++ library." ON)
Eric Fiselier10ed6c32015-07-30 22:30:34 +000092option(LIBCXX_INSTALL_SUPPORT_HEADERS "Install libc++ support headers." ON)
Eric Fiselier309a50a2016-09-07 01:15:10 +000093cmake_dependent_option(LIBCXX_INSTALL_EXPERIMENTAL_LIBRARY
94 "Install libc++experimental.a" ON
95 "LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY;LIBCXX_INSTALL_LIBRARY" OFF)
Evgeniy Stepanova66a7b32015-10-13 23:48:28 +000096set(LIBCXX_ABI_VERSION 1 CACHE STRING "ABI version of libc++.")
97option(LIBCXX_ABI_UNSTABLE "Unstable ABI of libc++." OFF)
Saleem Abdulrasoole81fcb82016-08-24 04:22:52 +000098option(LIBCXX_USE_COMPILER_RT "Use compiler-rt instead of libgcc" OFF)
Eric Fiselier10ed6c32015-07-30 22:30:34 +000099
Petr Hosek9e49a332016-08-08 22:57:25 +0000100if (NOT LIBCXX_ENABLE_SHARED AND NOT LIBCXX_ENABLE_STATIC)
101 message(FATAL_ERROR "libc++ must be built as either a shared or static library.")
102endif()
103
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000104# ABI Library options ---------------------------------------------------------
Eric Fiselier1285e4d2017-01-03 01:18:48 +0000105set(LIBCXX_CXX_ABI "default" CACHE STRING
106 "Specify C++ ABI library to use.")
Eric Fiselier1cd196e2017-01-16 20:47:35 +0000107set(CXXABIS none default libcxxabi libcxxrt libstdc++ libsupc++ vcruntime)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000108set_property(CACHE LIBCXX_CXX_ABI PROPERTY STRINGS ;${CXXABIS})
109
Eric Fiselier1285e4d2017-01-03 01:18:48 +0000110# FIXME: This is a temporary hack to force LLVM buildbots to store
111# the fixed cache entry instead of the previous cache entry. This is needed
112# because some LLVM buildbots don't clear their cache. It will be removed
113# once all LLVM bots have been run.
114if (LIBCXX_CXX_ABI STREQUAL "")
115 set(LIBCXX_CXX_ABI "default" CACHE STRING
116 "Specify the C++ ABI library to use." FORCE)
117endif()
118
Eric Fiselierbb906852015-10-22 20:54:27 +0000119# Setup the default options if LIBCXX_CXX_ABI is not specified.
Eric Fiselier1285e4d2017-01-03 01:18:48 +0000120if (LIBCXX_CXX_ABI STREQUAL "default")
Petr Hosek260952e2016-11-09 03:22:28 +0000121 find_path(
122 LIBCXX_LIBCXXABI_INCLUDES_INTERNAL
123 cxxabi.h
124 PATHS ${LLVM_MAIN_SRC_DIR}/projects/libcxxabi/include
125 ${LLVM_MAIN_SRC_DIR}/runtimes/libcxxabi/include
126 NO_DEFAULT_PATH
127 )
Petr Hosek2203aa92017-01-16 00:33:11 +0000128 if ((NOT LIBCXX_STANDALONE_BUILD OR HAVE_LIBCXXABI) AND
129 IS_DIRECTORY "${LIBCXX_LIBCXXABI_INCLUDES_INTERNAL}")
Eric Fiselierbb906852015-10-22 20:54:27 +0000130 set(LIBCXX_CXX_ABI_LIBNAME "libcxxabi")
Petr Hosek260952e2016-11-09 03:22:28 +0000131 set(LIBCXX_CXX_ABI_INCLUDE_PATHS "${LIBCXX_LIBCXXABI_INCLUDES_INTERNAL}")
Eric Fiselierbb906852015-10-22 20:54:27 +0000132 set(LIBCXX_CXX_ABI_INTREE 1)
Eugene Zelenko772d1142016-08-08 18:01:50 +0000133 else()
Eric Fiselier1cd196e2017-01-16 20:47:35 +0000134 if (LIBCXX_TARGETING_MSVC)
Eric Fiselier937c74c2017-01-06 23:59:52 +0000135 # FIXME: Figure out how to configure the ABI library on Windows.
Eric Fiselier1cd196e2017-01-16 20:47:35 +0000136 set(LIBCXX_CXX_ABI_LIBNAME "vcruntime")
Eric Fiselier937c74c2017-01-06 23:59:52 +0000137 else()
138 set(LIBCXX_CXX_ABI_LIBNAME "default")
139 endif()
Eugene Zelenko772d1142016-08-08 18:01:50 +0000140 endif()
141else()
Eric Fiselierbb906852015-10-22 20:54:27 +0000142 set(LIBCXX_CXX_ABI_LIBNAME "${LIBCXX_CXX_ABI}")
Eugene Zelenko772d1142016-08-08 18:01:50 +0000143endif()
Eric Fiselierbb906852015-10-22 20:54:27 +0000144
Eric Fiselier1ab69fc2015-10-15 22:41:51 +0000145# Use a static copy of the ABI library when linking libc++. This option
146# cannot be used with LIBCXX_ENABLE_ABI_LINKER_SCRIPT.
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000147option(LIBCXX_ENABLE_STATIC_ABI_LIBRARY "Statically link the ABI library" OFF)
148
Eric Fiselier82414052015-10-14 19:54:03 +0000149# Generate and install a linker script inplace of libc++.so. The linker script
Eric Fiselier1ab69fc2015-10-15 22:41:51 +0000150# will link libc++ to the correct ABI library. This option is on by default
151# On UNIX platforms other than Apple unless 'LIBCXX_ENABLE_STATIC_ABI_LIBRARY'
Eric Fiselier571367e2015-10-22 20:50:07 +0000152# is on. This option is also disabled when the ABI library is not specified
153# or is specified to be "none".
Eric Fiselier1ab69fc2015-10-15 22:41:51 +0000154set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE OFF)
Eric Fiseliera15785b2015-10-15 23:04:54 +0000155if (LLVM_HAVE_LINK_VERSION_SCRIPT AND NOT LIBCXX_ENABLE_STATIC_ABI_LIBRARY
Eric Fiselierbb906852015-10-22 20:54:27 +0000156 AND NOT LIBCXX_CXX_ABI_LIBNAME STREQUAL "none"
Eric Fiselier1285e4d2017-01-03 01:18:48 +0000157 AND NOT LIBCXX_CXX_ABI_LIBNAME STREQUAL "default"
Asiri Rathnayake28383a42016-05-14 23:58:11 +0000158 AND PYTHONINTERP_FOUND
159 AND LIBCXX_ENABLE_SHARED)
Eric Fiselier1ab69fc2015-10-15 22:41:51 +0000160 set(ENABLE_LINKER_SCRIPT_DEFAULT_VALUE ON)
161endif()
162
Eric Fiselier82414052015-10-14 19:54:03 +0000163option(LIBCXX_ENABLE_ABI_LINKER_SCRIPT
Eric Fiselier1ab69fc2015-10-15 22:41:51 +0000164 "Use and install a linker script for the given ABI library"
Eric Fiseliera15785b2015-10-15 23:04:54 +0000165 ${ENABLE_LINKER_SCRIPT_DEFAULT_VALUE})
Eric Fiselier82414052015-10-14 19:54:03 +0000166
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000167# Build libc++abi with libunwind. We need this option to determine whether to
168# link with libunwind or libgcc_s while running the test cases.
169option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
170
171# Target options --------------------------------------------------------------
172option(LIBCXX_BUILD_32_BITS "Build 32 bit libc++." ${LLVM_BUILD_32_BITS})
173set(LIBCXX_SYSROOT "" CACHE STRING "Use alternate sysroot.")
174set(LIBCXX_GCC_TOOLCHAIN "" CACHE STRING "Use alternate GCC toolchain.")
175
176# Feature options -------------------------------------------------------------
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000177option(LIBCXX_ENABLE_EXCEPTIONS "Use exceptions." ON)
178option(LIBCXX_ENABLE_RTTI "Use run time type information." ON)
Ed Schouten97fdea62015-03-12 15:44:39 +0000179option(LIBCXX_ENABLE_GLOBAL_FILESYSTEM_NAMESPACE "Build libc++ with support for the global filesystem namespace." ON)
Ed Schoutenf4ac8842015-03-26 14:35:46 +0000180option(LIBCXX_ENABLE_STDIN "Build libc++ with support for stdin/std::cin." ON)
181option(LIBCXX_ENABLE_STDOUT "Build libc++ with support for stdout/std::cout." ON)
Eric Fiselierb9f99732014-12-06 21:02:58 +0000182option(LIBCXX_ENABLE_THREADS "Build libc++ with support for threads." ON)
Ed Schoutene0cf3b92015-06-24 08:44:38 +0000183option(LIBCXX_ENABLE_THREAD_UNSAFE_C_FUNCTIONS "Build libc++ with support for thread-unsafe C functions" ON)
Eric Fiselierb9f99732014-12-06 21:02:58 +0000184option(LIBCXX_ENABLE_MONOTONIC_CLOCK
185 "Build libc++ with support for a monotonic clock.
Jonathan Roelofs91b3a5e2015-08-24 21:20:07 +0000186 This option may only be set to OFF when LIBCXX_ENABLE_THREADS=OFF." ON)
Vasileios Kalintiris8c58e922015-11-09 10:21:04 +0000187option(LIBCXX_HAS_MUSL_LIBC "Build libc++ with support for the Musl C library" OFF)
Ben Craigb9599b12016-05-25 17:40:09 +0000188option(LIBCXX_HAS_PTHREAD_API "Ignore auto-detection and force use of pthread API" OFF)
Asiri Rathnayake8c2bf452016-09-11 21:46:40 +0000189option(LIBCXX_HAS_EXTERNAL_THREAD_API
190 "Build libc++ with an externalized threading API.
191 This option may only be set to ON when LIBCXX_ENABLE_THREADS=ON." OFF)
Eric Fiselier00f6bea2017-01-06 20:05:40 +0000192option(LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY
193 "Build libc++ with an externalized threading library.
194 This option may only be set to ON when LIBCXX_ENABLE_THREADS=ON" OFF)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000195
196# Misc options ----------------------------------------------------------------
Eric Fiselier6fb770a2015-10-10 03:34:52 +0000197# FIXME: Turn -pedantic back ON. It is currently off because it warns
198# about #include_next which is used everywhere.
199option(LIBCXX_ENABLE_PEDANTIC "Compile with pedantic enabled." OFF)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000200option(LIBCXX_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
Saleem Abdulrasool6fe30732016-07-12 14:39:13 +0000201option(LIBCXX_DISABLE_MACRO_CONFLICT_WARNINGS "Disable #warnings about conflicting macros." OFF)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000202
Eric Fiselier78fdf2d2015-03-31 04:15:45 +0000203option(LIBCXX_GENERATE_COVERAGE "Enable generating code coverage." OFF)
204set(LIBCXX_COVERAGE_LIBRARY "" CACHE STRING
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000205 "The Profile-rt library used to build with code coverage")
206
Eric Fiselierd77135f2015-08-26 20:18:21 +0000207# Don't allow a user to accidentally overwrite the system libc++ installation on Darwin.
208# If the user specifies -DCMAKE_INSTALL_PREFIX=/usr the install rules for libc++
209# will not be generated and a warning will be issued.
210option(LIBCXX_OVERRIDE_DARWIN_INSTALL "Enable overwriting darwins libc++ installation." OFF)
211mark_as_advanced(LIBCXX_OVERRIDE_DARWIN_INSTALL) # Don't show this option by default.
212
213if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND NOT LIBCXX_OVERRIDE_DARWIN_INSTALL)
214 if ("${CMAKE_INSTALL_PREFIX}" STREQUAL "/usr")
215 message(WARNING "Disabling libc++ install rules because installation would "
216 "overwrite the systems installation. Configure with "
217 "-DLIBCXX_OVERRIDE_DARWIN_INSTALL=ON to suppress this behaviour.")
218 mark_as_advanced(CLEAR LIBCXX_OVERRIDE_DARWIN_INSTALL) # Show the override option.
219 set(LIBCXX_INSTALL_HEADERS OFF)
220 set(LIBCXX_INSTALL_LIBRARY OFF)
221 endif()
222endif()
223
Eric Fiselier6627c702015-12-16 23:41:05 +0000224set(LIBCXX_CONFIGURE_IDE_DEFAULT OFF)
225if (XCODE OR MSVC_IDE)
226 set(LIBCXX_CONFIGURE_IDE_DEFAULT ON)
227endif()
228option(LIBCXX_CONFIGURE_IDE "Configure libcxx for use within an IDE"
229 ${LIBCXX_CONFIGURE_IDE_DEFAULT})
230
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000231#===============================================================================
232# Check option configurations
233#===============================================================================
234
Eric Fiselierc7979582016-06-17 19:46:40 +0000235if (LIBCXX_ENABLE_FILESYSTEM AND NOT LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
236 message(FATAL_ERROR
237 "LIBCXX_ENABLE_FILESYSTEM cannot be turned on when LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY=OFF")
238endif()
239
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000240# Ensure LIBCXX_ENABLE_MONOTONIC_CLOCK is set to ON only when
241# LIBCXX_ENABLE_THREADS is on.
242if(LIBCXX_ENABLE_THREADS AND NOT LIBCXX_ENABLE_MONOTONIC_CLOCK)
243 message(FATAL_ERROR "LIBCXX_ENABLE_MONOTONIC_CLOCK can only be set to OFF"
244 " when LIBCXX_ENABLE_THREADS is also set to OFF.")
Eric Fiselier0058c802014-08-18 05:03:46 +0000245endif()
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000246
Asiri Rathnayake205d7d32017-01-03 12:59:50 +0000247if(NOT LIBCXX_ENABLE_THREADS)
248 if(LIBCXX_HAS_PTHREAD_API)
249 message(FATAL_ERROR "LIBCXX_HAS_PTHREAD_API can only be set to ON"
250 " when LIBCXX_ENABLE_THREADS is also set to ON.")
251 endif()
252 if(LIBCXX_HAS_EXTERNAL_THREAD_API)
253 message(FATAL_ERROR "LIBCXX_HAS_EXTERNAL_THREAD_API can only be set to ON"
254 " when LIBCXX_ENABLE_THREADS is also set to ON.")
255 endif()
Eric Fiselier00f6bea2017-01-06 20:05:40 +0000256 if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
257 message(FATAL_ERROR "LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY can only be set "
258 "to ON when LIBCXX_ENABLE_THREADS is also set to ON.")
259 endif()
260
261endif()
262
Asiri Rathnayakeb71c8992017-01-09 10:38:56 +0000263if (LIBCXX_HAS_EXTERNAL_THREAD_API)
264 if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY)
265 message(FATAL_ERROR "The options LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY and "
266 "LIBCXX_HAS_EXTERNAL_THREAD_API cannot both be ON at "
267 "the same time")
268 endif()
269 if (LIBCXX_HAS_PTHREAD_API)
270 message(FATAL_ERROR "The options LIBCXX_HAS_EXTERNAL_THREAD_API"
271 "and LIBCXX_HAS_PTHREAD_API cannot be both"
272 "set to ON at the same time.")
273 endif()
Asiri Rathnayake8c2bf452016-09-11 21:46:40 +0000274endif()
275
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000276# Ensure LLVM_USE_SANITIZER is not specified when LIBCXX_GENERATE_COVERAGE
277# is ON.
278if (LLVM_USE_SANITIZER AND LIBCXX_GENERATE_COVERAGE)
279 message(FATAL_ERROR "LLVM_USE_SANITIZER cannot be used with LIBCXX_GENERATE_COVERAGE")
280endif()
281
282# Set LIBCXX_BUILD_32_BITS to (LIBCXX_BUILD_32_BITS OR LLVM_BUILD_32_BITS)
283# and check that we can build with 32 bits if requested.
284if (CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32)
285 if (LIBCXX_BUILD_32_BITS AND NOT LLVM_BUILD_32_BITS) # Don't duplicate the output from LLVM
286 message(STATUS "Building 32 bits executables and libraries.")
287 endif()
288elseif(LIBCXX_BUILD_32_BITS)
289 message(FATAL_ERROR "LIBCXX_BUILD_32_BITS=ON is not supported on this platform.")
290endif()
291
292# Check that this option is not enabled on Apple and emit a usage warning.
Eric Fiselier03571712015-03-03 15:59:51 +0000293if (LIBCXX_ENABLE_STATIC_ABI_LIBRARY)
294 if (APPLE)
295 message(FATAL_ERROR "LIBCXX_ENABLE_STATIC_ABI_LIBRARY is not supported on OS X")
296 else()
297 message(WARNING "LIBCXX_ENABLE_STATIC_ABI_LIBRARY is an experimental option")
298 endif()
Eric Fiselierbf58c8e2016-11-18 19:53:45 +0000299 if (LIBCXX_ENABLE_STATIC AND NOT PYTHONINTERP_FOUND)
300 message(FATAL_ERROR "LIBCXX_ENABLE_STATIC_ABI_LIBRARY requires python but it was not found.")
301 endif()
Eric Fiselier03571712015-03-03 15:59:51 +0000302endif()
303
Eric Fiselier82414052015-10-14 19:54:03 +0000304if (LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
305 if (APPLE)
306 message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT cannot be used on APPLE targets")
307 endif()
308 if (NOT PYTHONINTERP_FOUND)
309 message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT requires python but it was not found.")
310 endif()
Asiri Rathnayake28383a42016-05-14 23:58:11 +0000311 if (NOT LIBCXX_ENABLE_SHARED)
312 message(FATAL_ERROR "LIBCXX_ENABLE_ABI_LINKER_SCRIPT is only available for shared library builds.")
313 endif()
Eric Fiselier82414052015-10-14 19:54:03 +0000314endif()
315
316if (LIBCXX_ENABLE_STATIC_ABI_LIBRARY AND LIBCXX_ENABLE_ABI_LINKER_SCRIPT)
317 message(FATAL_ERROR "Conflicting options given.
318 LIBCXX_ENABLE_STATIC_ABI_LIBRARY cannot be specified with
319 LIBCXX_ENABLE_ABI_LINKER_SCRIPT")
320endif()
321
Vasileios Kalintiris8c58e922015-11-09 10:21:04 +0000322if (LIBCXX_HAS_MUSL_LIBC AND NOT LIBCXX_INSTALL_SUPPORT_HEADERS)
323 message(FATAL_ERROR "LIBCXX_INSTALL_SUPPORT_HEADERS can not be turned off"
324 "when building for Musl with LIBCXX_HAS_MUSL_LIBC.")
325endif()
326
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000327#===============================================================================
328# Configure System
329#===============================================================================
330
Eric Fiseliera78a2672014-12-20 03:16:55 +0000331set(LIBCXX_COMPILER ${CMAKE_CXX_COMPILER})
332set(LIBCXX_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
333set(LIBCXX_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
Eric Fiselier1cd196e2017-01-16 20:47:35 +0000334set(LIBCXX_BINARY_INCLUDE_DIR "${LIBCXX_BINARY_DIR}/include/c++build")
Chandler Carruth64be05a2014-12-29 12:15:47 +0000335set(LIBCXX_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXX_LIBDIR_SUFFIX})
Eric Fiselier1cd196e2017-01-16 20:47:35 +0000336file(MAKE_DIRECTORY "${LIBCXX_BINARY_INCLUDE_DIR}")
Eric Fiseliera78a2672014-12-20 03:16:55 +0000337
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000338set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR})
339set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBCXX_LIBRARY_DIR})
340
Eric Fiselier5aedca92014-11-15 06:26:30 +0000341# Declare libc++ configuration variables.
342# They are intended for use as follows:
343# LIBCXX_CXX_FLAGS: General flags for both the compiler and linker.
344# LIBCXX_COMPILE_FLAGS: Compile only flags.
345# LIBCXX_LINK_FLAGS: Linker only flags.
Eric Fiselier054fc4c2016-10-09 21:34:03 +0000346# LIBCXX_LIBRARIES: libraries libc++ is linked to.
347# LIBCXX_INTERFACE_LIBRARIES: Libraries that must be linked when using libc++
Eric Fiselier5df547c2016-10-10 14:45:06 +0000348# These libraries are exposed in the linker script.
Eric Fiselier5aedca92014-11-15 06:26:30 +0000349set(LIBCXX_COMPILE_FLAGS "")
350set(LIBCXX_LINK_FLAGS "")
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000351set(LIBCXX_LIBRARIES "")
Eric Fiselier054fc4c2016-10-09 21:34:03 +0000352set(LIBCXX_INTERFACE_LIBRARIES "")
Eric Fiselier5aedca92014-11-15 06:26:30 +0000353
Eric Fiseliera4f24602016-06-02 01:10:08 +0000354# Include macros for adding and removing libc++ flags.
355include(HandleLibcxxFlags)
356
357# Target flags ================================================================
358# These flags get added to CMAKE_CXX_FLAGS and CMAKE_C_FLAGS so that
359# 'config-ix' use them during feature checks. It also adds them to both
360# 'LIBCXX_COMPILE_FLAGS' and 'LIBCXX_LINK_FLAGS'
361add_target_flags_if(LIBCXX_BUILD_32_BITS "-m32")
362add_target_flags_if(LIBCXX_TARGET_TRIPLE "-target ${LIBCXX_TARGET_TRIPLE}")
363add_target_flags_if(LIBCXX_SYSROOT "--sysroot=${LIBCXX_SYSROOT}")
364add_target_flags_if(LIBCXX_GCC_TOOLCHAIN "-gcc-toolchain ${LIBCXX_GCC_TOOLCHAIN}")
Eric Fiselier79ff8f032016-11-13 22:27:00 +0000365if (LIBCXX_TARGET_TRIPLE)
366 set(TARGET_TRIPLE "${LIBCXX_TARGET_TRIPLE}")
367endif()
Eric Fiseliera4f24602016-06-02 01:10:08 +0000368
Eric Fiselier382338d2014-11-15 17:25:23 +0000369# Configure compiler.
370include(config-ix)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000371
Saleem Abdulrasoole81fcb82016-08-24 04:22:52 +0000372if (LIBCXX_USE_COMPILER_RT)
373 list(APPEND LIBCXX_LINK_FLAGS "-rtlib=compiler-rt")
374endif()
375
Eric Fiselier78fdf2d2015-03-31 04:15:45 +0000376# Configure coverage options.
377if (LIBCXX_GENERATE_COVERAGE)
378 include(CodeCoverage)
379 set(CMAKE_BUILD_TYPE "COVERAGE" CACHE STRING "" FORCE)
380endif()
Eric Fiselier382338d2014-11-15 17:25:23 +0000381
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000382string(TOUPPER "${CMAKE_BUILD_TYPE}" uppercase_CMAKE_BUILD_TYPE)
Eric Fiselier7e3ee092017-01-14 07:54:39 +0000383if (uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
384 set(LIBCXX_DEBUG_BUILD ON)
385else()
386 set(LIBCXX_DEBUG_BUILD OFF)
387endif()
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000388
Eric Fiselier382338d2014-11-15 17:25:23 +0000389#===============================================================================
390# Setup Compiler Flags
391#===============================================================================
392
JF Bastienfc45f322016-03-05 14:22:02 +0000393include(HandleLibCXXABI) # Setup the ABI library flags
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000394
Michal Gornyecc88642016-09-27 07:55:26 +0000395if (NOT LIBCXX_STANDALONE_BUILD)
396 # Remove flags that may have snuck in.
397 remove_flags(-DNDEBUG -UNDEBUG -D_DEBUG
Eric Fiselier6dede182017-01-17 23:27:56 +0000398 -lc++abi)
Michal Gornyecc88642016-09-27 07:55:26 +0000399endif()
400remove_flags(-stdlib=libc++ -stdlib=libstdc++)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000401
Eric Fiseliercc1f65c2017-01-14 06:06:47 +0000402# FIXME: Remove all debug flags and flags that change which Windows
403# default libraries are linked. Currently we only support linking the
404# non-debug DLLs
Eric Fiselier7e3ee092017-01-14 07:54:39 +0000405remove_flags("/D_DEBUG" "/MTd" "/MDd" "/MT" "/Md")
Eric Fiseliercc1f65c2017-01-14 06:06:47 +0000406
Eric Fiselier6dede182017-01-17 23:27:56 +0000407# FIXME(EricWF): See the FIXME on LIBCXX_ENABLE_PEqDANTIC.
Eric Fiselierf2be7c22015-10-15 20:27:15 +0000408# Remove the -pedantic flag and -Wno-pedantic and -pedantic-errors
409# so they don't get transformed into -Wno and -errors respectivly.
410remove_flags(-Wno-pedantic -pedantic-errors -pedantic)
Eric Fiselierf4bfd7c2015-10-13 23:56:33 +0000411
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000412# Required flags ==============================================================
Eric Fiselier599a8422016-08-14 22:51:54 +0000413set(LIBCXX_STANDARD_VER c++11 CACHE INTERNAL "internal option to change build dialect")
Petr Hosek642b5b22016-10-23 21:48:27 +0000414if (LIBCXX_HAS_MUSL_LIBC)
415 # musl's pthread implementations uses volatile types in their structs which is
416 # not a constexpr in C++11 but is in C++14, so we use C++14 with musl.
417 set(LIBCXX_STANDARD_VER c++14 CACHE INTERNAL "internal option to change build dialect")
418endif()
Eric Fiselier599a8422016-08-14 22:51:54 +0000419add_compile_flags_if_supported(-std=${LIBCXX_STANDARD_VER})
420mangle_name("LIBCXX_SUPPORTS_STD_EQ_${LIBCXX_STANDARD_VER}_FLAG" SUPPORTS_DIALECT_NAME)
Saleem Abdulrasool581bb5b2017-01-01 20:20:40 +0000421if(NOT ${SUPPORTS_DIALECT_NAME})
422 if(NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC" AND NOT "${CMAKE_CXX_SIMULATE_ID}" STREQUAL "MSVC")
423 message(FATAL_ERROR "C++11 or greater is required but the compiler does not support ${LIBCXX_STANDARD_VER}")
424 endif()
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000425endif()
426
Eric Fiselierb98aa432015-07-29 23:46:55 +0000427# On all systems the system c++ standard library headers need to be excluded.
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000428# MSVC only has -X, which disables all default includes; including the crt.
429# Thus, we do nothing and hope we don't accidentally include any of the C++
430# headers
431add_compile_flags_if_supported(-nostdinc++)
Eric Fiselierff16b9a2015-07-29 21:07:28 +0000432
Eric Fiselier10b12f02016-10-25 19:43:44 +0000433# Hide all inline function definitions which have not explicitly been marked
434# visible. This prevents new definitions for inline functions from appearing in
435# the dylib when get ODR used by another function.
436add_compile_flags_if_supported(-fvisibility-inlines-hidden)
437
Eric Fiselier54644212016-09-26 22:19:41 +0000438# Let the library headers know they are currently being used to build the
439# library.
Eric Fiselierf8f31c42016-09-16 00:00:48 +0000440add_definitions(-D_LIBCPP_BUILDING_LIBRARY)
441
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000442# Warning flags ===============================================================
Eric Fiselier87a82492015-07-18 20:40:46 +0000443add_definitions(-D_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000444add_compile_flags_if_supported(
Eric Fiselierf6ac5652016-08-29 20:43:38 +0000445 -Wall -Wextra -W -Wwrite-strings
446 -Wno-unused-parameter -Wno-long-long
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000447 -Werror=return-type)
Eric Fiselierf6ac5652016-08-29 20:43:38 +0000448if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
449 add_compile_flags_if_supported(
450 -Wno-user-defined-literals
451 -Wno-covered-switch-default)
452elseif("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
453 add_compile_flags_if_supported(
Eric Fiselierf6ac5652016-08-29 20:43:38 +0000454 -Wno-literal-suffix
455 -Wno-c++14-compat)
456endif()
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000457if (LIBCXX_ENABLE_WERROR)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000458 add_compile_flags_if_supported(-Werror)
459 add_compile_flags_if_supported(-WX)
Eric Fiselier66d86b72015-07-31 01:25:01 +0000460else()
461 # TODO(EricWF) Remove this. We shouldn't be suppressing errors when -Werror is
462 # added elsewhere.
463 add_compile_flags_if_supported(-Wno-error)
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000464endif()
465if (LIBCXX_ENABLE_PEDANTIC)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000466 add_compile_flags_if_supported(-pedantic)
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000467endif()
Saleem Abdulrasool6fe30732016-07-12 14:39:13 +0000468if (LIBCXX_DISABLE_MACRO_CONFLICT_WARNINGS)
469 add_definitions(-D_LIBCPP_DISABLE_MACRO_CONFLICT_WARNINGS)
470endif()
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000471
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000472# Exception flags =============================================================
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000473if (LIBCXX_ENABLE_EXCEPTIONS)
474 # Catches C++ exceptions only and tells the compiler to assume that extern C
475 # functions never throw a C++ exception.
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000476 add_compile_flags_if_supported(-EHsc)
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000477else()
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000478 add_definitions(-D_LIBCPP_NO_EXCEPTIONS)
479 add_compile_flags_if_supported(-EHs- -EHa-)
480 add_compile_flags_if_supported(-fno-exceptions)
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000481endif()
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000482
483# RTTI flags ==================================================================
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000484if (NOT LIBCXX_ENABLE_RTTI)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000485 add_definitions(-D_LIBCPP_NO_RTTI)
486 add_compile_flags_if_supported(-GR-)
487 add_compile_flags_if_supported(-fno-rtti)
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000488endif()
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000489
Asiri Rathnayake8c2bf452016-09-11 21:46:40 +0000490# Threading flags =============================================================
Asiri Rathnayakeb71c8992017-01-09 10:38:56 +0000491if (LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY AND LIBCXX_ENABLE_SHARED)
Asiri Rathnayake8c2bf452016-09-11 21:46:40 +0000492 # Need to allow unresolved symbols if this is to work with shared library builds
493 if (APPLE)
494 add_link_flags("-undefined dynamic_lookup")
495 else()
496 # Relax this restriction from HandleLLVMOptions
497 string(REPLACE "-Wl,-z,defs" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
498 endif()
499endif()
500
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000501# Assertion flags =============================================================
502define_if(LIBCXX_ENABLE_ASSERTIONS -UNDEBUG)
503define_if_not(LIBCXX_ENABLE_ASSERTIONS -DNDEBUG)
Eric Fiselier7e3ee092017-01-14 07:54:39 +0000504define_if(LIBCXX_DEBUG_BUILD -D_DEBUG)
505if (LIBCXX_ENABLE_ASSERTIONS AND NOT LIBCXX_DEBUG_BUILD)
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000506 # MSVC doesn't like _DEBUG on release builds. See PR 4379.
Eric Fiseliercc1f65c2017-01-14 06:06:47 +0000507 define_if_not(LIBCXX_TARGETING_MSVC -D_DEBUG)
Howard Hinnanta9f69802013-02-25 15:50:36 +0000508endif()
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000509
Eric Fiselier194e0272016-10-14 12:56:52 +0000510# Modules flags ===============================================================
511# FIXME The libc++ sources are fundamentally non-modular. They need special
512# versions of the headers in order to provide C++03 and legacy ABI definitions.
513# NOTE: The public headers can be used with modules in all other contexts.
514if (LLVM_ENABLE_MODULES)
515 # Ignore that the rest of the modules flags are now unused.
516 add_compile_flags_if_supported(-Wno-unused-command-line-argument)
517 add_compile_flags(-fno-modules)
518endif()
519
Jonathan Roelofs91b3a5e2015-08-24 21:20:07 +0000520# Sanitizer flags =============================================================
Eric Fiselierb98aa432015-07-29 23:46:55 +0000521
Chris Bieneman12b134b2016-08-18 21:31:51 +0000522# Configure for sanitizers. If LIBCXX_STANDALONE_BUILD then we have to do
Eric Fiselierb98aa432015-07-29 23:46:55 +0000523# the flag translation ourselves. Othewise LLVM's CMakeList.txt will handle it.
Chris Bieneman12b134b2016-08-18 21:31:51 +0000524if (LIBCXX_STANDALONE_BUILD)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000525 set(LLVM_USE_SANITIZER "" CACHE STRING
526 "Define the sanitizer used to build the library and tests")
Eric Fiselierb98aa432015-07-29 23:46:55 +0000527 # NOTE: LLVM_USE_SANITIZER checks for a UNIX like system instead of MSVC.
528 # But we don't have LLVM_ON_UNIX so checking for MSVC is the best we can do.
529 if (LLVM_USE_SANITIZER AND NOT MSVC)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000530 add_flags_if_supported("-fno-omit-frame-pointer")
531 add_flags_if_supported("-gline-tables-only")
532
Eric Fiselierb98aa432015-07-29 23:46:55 +0000533 if (NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG" AND
534 NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELWITHDEBINFO")
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000535 add_flags_if_supported("-gline-tables-only")
Eric Fiselierb98aa432015-07-29 23:46:55 +0000536 endif()
537 if (LLVM_USE_SANITIZER STREQUAL "Address")
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000538 add_flags("-fsanitize=address")
Eric Fiselierb98aa432015-07-29 23:46:55 +0000539 elseif (LLVM_USE_SANITIZER MATCHES "Memory(WithOrigins)?")
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000540 add_flags(-fsanitize=memory)
Eric Fiselierb98aa432015-07-29 23:46:55 +0000541 if (LLVM_USE_SANITIZER STREQUAL "MemoryWithOrigins")
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000542 add_flags("-fsanitize-memory-track-origins")
Eric Fiselierb98aa432015-07-29 23:46:55 +0000543 endif()
544 elseif (LLVM_USE_SANITIZER STREQUAL "Undefined")
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000545 add_flags("-fsanitize=undefined -fno-sanitize=vptr,function -fno-sanitize-recover=all")
Eric Fiselierb98aa432015-07-29 23:46:55 +0000546 elseif (LLVM_USE_SANITIZER STREQUAL "Thread")
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000547 add_flags(-fsanitize=thread)
Eric Fiselierb98aa432015-07-29 23:46:55 +0000548 else()
549 message(WARNING "Unsupported value of LLVM_USE_SANITIZER: ${LLVM_USE_SANITIZER}")
550 endif()
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000551 elseif(LLVM_USE_SANITIZER AND MSVC)
552 message(WARNING "LLVM_USE_SANITIZER is not supported on this platform.")
Eric Fiselierb98aa432015-07-29 23:46:55 +0000553 endif()
554endif()
Eric Fiselierf9f796e2015-10-13 22:12:02 +0000555
556# Configuration file flags =====================================================
Evgeniy Stepanova66a7b32015-10-13 23:48:28 +0000557if (NOT LIBCXX_ABI_VERSION EQUAL "1")
558 config_define(${LIBCXX_ABI_VERSION} _LIBCPP_ABI_VERSION)
559endif()
560config_define_if(LIBCXX_ABI_UNSTABLE _LIBCPP_ABI_UNSTABLE)
561
Eric Fiselierf9f796e2015-10-13 22:12:02 +0000562config_define_if_not(LIBCXX_ENABLE_GLOBAL_FILESYSTEM_NAMESPACE _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE)
563config_define_if_not(LIBCXX_ENABLE_STDIN _LIBCPP_HAS_NO_STDIN)
564config_define_if_not(LIBCXX_ENABLE_STDOUT _LIBCPP_HAS_NO_STDOUT)
565config_define_if_not(LIBCXX_ENABLE_THREADS _LIBCPP_HAS_NO_THREADS)
566config_define_if_not(LIBCXX_ENABLE_MONOTONIC_CLOCK _LIBCPP_HAS_NO_MONOTONIC_CLOCK)
567config_define_if_not(LIBCXX_ENABLE_THREAD_UNSAFE_C_FUNCTIONS _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS)
568
Ben Craigb9599b12016-05-25 17:40:09 +0000569config_define_if(LIBCXX_HAS_PTHREAD_API _LIBCPP_HAS_THREAD_API_PTHREAD)
Asiri Rathnayake8c2bf452016-09-11 21:46:40 +0000570config_define_if(LIBCXX_HAS_EXTERNAL_THREAD_API _LIBCPP_HAS_THREAD_API_EXTERNAL)
Eric Fiselier00f6bea2017-01-06 20:05:40 +0000571config_define_if(LIBCXX_BUILD_EXTERNAL_THREAD_LIBRARY _LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL)
Vasileios Kalintiris8c58e922015-11-09 10:21:04 +0000572config_define_if(LIBCXX_HAS_MUSL_LIBC _LIBCPP_HAS_MUSL_LIBC)
573
Eric Fiselier54644212016-09-26 22:19:41 +0000574# By default libc++ on Windows expects to use a shared library, which requires
575# the headers to use DLL import/export semantics. However when building a
576# static library only we modify the headers to disable DLL import/export.
577if (DEFINED WIN32 AND LIBCXX_ENABLE_STATIC AND NOT LIBCXX_ENABLE_SHARED)
578 message(STATUS "Generating custom __config for non-DLL Windows build")
Shoaib Meenaifc6100c2016-12-05 19:40:12 +0000579 config_define(ON _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS)
Eric Fiselier54644212016-09-26 22:19:41 +0000580endif()
581
Eric Fiselierf9f796e2015-10-13 22:12:02 +0000582if (LIBCXX_NEEDS_SITE_CONFIG)
Saleem Abdulrasool581bb5b2017-01-01 20:20:40 +0000583 configure_file("include/__config_site.in"
584 "${LIBCXX_BINARY_DIR}/__config_site"
585 @ONLY)
586
Eric Fiselier29ada6d2015-10-14 00:22:05 +0000587 # Provide the config definitions by included the generated __config_site
588 # file at compile time.
Saleem Abdulrasool581bb5b2017-01-01 20:20:40 +0000589 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC" OR "${CMAKE_CXX_SIMULATE_ID}" STREQUAL "MSVC")
590 add_compile_flags("/FI\"${LIBCXX_BINARY_DIR}/__config_site\"")
591 else()
592 add_compile_flags("-include ${LIBCXX_BINARY_DIR}/__config_site")
593 endif()
Eric Fiselierf9f796e2015-10-13 22:12:02 +0000594endif()
595
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000596#===============================================================================
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000597# Setup Source Code And Tests
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000598#===============================================================================
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000599include_directories(include)
Howard Hinnant6a0d6ce2013-11-15 17:18:57 +0000600add_subdirectory(include)
Michael J. Spencerf5799be2010-12-10 19:47:54 +0000601add_subdirectory(lib)
Eric Fiselierb17bb062015-08-22 19:40:49 +0000602
Eric Fiselier28349f92016-11-14 02:43:12 +0000603
Eric Fiselierb08d8b12016-07-19 23:07:03 +0000604if (LIBCXX_INCLUDE_BENCHMARKS)
605 add_subdirectory(benchmarks)
606endif()
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000607if (LIBCXX_INCLUDE_TESTS)
608 add_subdirectory(test)
Eric Fiselier28349f92016-11-14 02:43:12 +0000609 add_subdirectory(lib/abi)
Eric Fiselier10ed6c32015-07-30 22:30:34 +0000610endif()
Eric Fiselierb17bb062015-08-22 19:40:49 +0000611if (LIBCXX_INCLUDE_DOCS)
612 add_subdirectory(docs)
613endif()