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Add support for building libc++ as a 32 bit library

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224096 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier 2014-12-12 03:12:18 +00:00
parent 01f6a1410c
commit ae9fec0bdf
4 changed files with 14 additions and 0 deletions
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9
CMakeLists.txt
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@ -43,6 +43,7 @@ option(LIBCXX_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
option(LIBCXX_ENABLE_CXX1Y "Enable -std=c++1y and use of c++1y language features if the compiler supports it." OFF)
option(LIBCXX_ENABLE_SHARED "Build libc++ as a shared library." ON)
option(LIBCXX_ENABLE_THREADS "Build libc++ with support for threads." ON)
option(LIBCXX_BUILD_32_BITS "Build 32 bit libc++" OFF)
option(LIBCXX_ENABLE_MONOTONIC_CLOCK
"Build libc++ with support for a monotonic clock.
This option may only be used when LIBCXX_ENABLE_THREADS=OFF." ON)
@ -205,6 +206,14 @@ if (NOT LIBCXX_ENABLE_SHARED)
list(APPEND LIBCXX_COMPILE_FLAGS -D_LIBCPP_BUILD_STATIC)
endif()
if (CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32)
if (LIBCXX_BUILD_32_BITS)
message(STATUS "Building 32 bits executables and libraries.")
list(APPEND LIBCXX_CXX_FLAGS "-m32")
endif()
elseif(LIBCXX_BUILD_32_BITS)
message(FATAL_ERROR "LIBCXX_BUILD_32_BITS=ON is not supported on this platform.")
endif()
# This is the _ONLY_ place where add_definitions is called.
if (MSVC)
add_definitions(-D_CRT_SECURE_NO_WARNINGS)

1
test/CMakeLists.txt
View File

@ -30,6 +30,7 @@ if(PYTHONINTERP_FOUND)
pythonize_bool(LIBCXX_ENABLE_EXCEPTIONS)
pythonize_bool(LIBCXX_ENABLE_RTTI)
pythonize_bool(LIBCXX_ENABLE_SHARED)
pythonize_bool(LIBCXX_BUILD_32_BITS)
pythonize_bool(LIBCXX_ENABLE_THREADS)
pythonize_bool(LIBCXX_ENABLE_MONOTONIC_CLOCK)

3
test/lit.cfg
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@ -436,6 +436,9 @@ class Configuration(object):
self.config.available_features.add('rtti')
else:
self.compile_flags += ['-fno-rtti', '-D_LIBCPP_NO_RTTI']
enable_32bit = self.get_lit_bool('enable_32bit', False)
if enable_32bit:
self.compile_flags += ['-m32']
# Configure threading features.
enable_threads = self.get_lit_bool('enable_threads', True)
enable_monotonic_clock = self.get_lit_bool('enable_monotonic_clock', True)

1
test/lit.site.cfg.in
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@ -7,6 +7,7 @@ config.python_executable = "@PYTHON_EXECUTABLE@"
config.enable_exceptions = "@LIBCXX_ENABLE_EXCEPTIONS@"
config.enable_rtti = "@LIBCXX_ENABLE_RTTI@"
config.enable_shared = "@LIBCXX_ENABLE_SHARED@"
config.enable_32bit = "@LIBCXX_BUILD_32_BITS@"
config.enable_threads = "@LIBCXX_ENABLE_THREADS@"
config.enable_monotonic_clock = "@LIBCXX_ENABLE_MONOTONIC_CLOCK@"
config.cxx_abi = "@LIBCXX_CXX_ABI_LIBNAME@"