diff options
Diffstat (limited to 'cmake/modules/HandleLLVMOptions.cmake')
| -rw-r--r-- | cmake/modules/HandleLLVMOptions.cmake | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/cmake/modules/HandleLLVMOptions.cmake b/cmake/modules/HandleLLVMOptions.cmake new file mode 100644 index 0000000..7ca2bd0 --- /dev/null +++ b/cmake/modules/HandleLLVMOptions.cmake @@ -0,0 +1,161 @@ +include(AddLLVMDefinitions) + +# Run-time build mode; It is used for unittests. +if(MSVC_IDE) + # Expect "$(Configuration)", "$(OutDir)", etc. + # It is expanded by msbuild or similar. + set(RUNTIME_BUILD_MODE "${CMAKE_CFG_INTDIR}") +elseif(NOT CMAKE_BUILD_TYPE STREQUAL "") + # Expect "Release" "Debug", etc. + # Or unittests could not run. + set(RUNTIME_BUILD_MODE ${CMAKE_BUILD_TYPE}) +else() + # It might be "." + set(RUNTIME_BUILD_MODE "${CMAKE_CFG_INTDIR}") +endif() + +set(LIT_ARGS_DEFAULT "-sv") +if (MSVC OR XCODE) + set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar") +endif() +set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" + CACHE STRING "Default options for lit") + +if( LLVM_ENABLE_ASSERTIONS ) + # MSVC doesn't like _DEBUG on release builds. See PR 4379. + if( NOT MSVC ) + add_definitions( -D_DEBUG ) + endif() + # On Release builds cmake automatically defines NDEBUG, so we + # explicitly undefine it: + if( uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" ) + add_definitions( -UNDEBUG ) + endif() +else() + if( NOT uppercase_CMAKE_BUILD_TYPE STREQUAL "RELEASE" ) + if( NOT MSVC_IDE AND NOT XCODE ) + add_definitions( -DNDEBUG ) + endif() + endif() +endif() + +if(WIN32) + if(CYGWIN) + set(LLVM_ON_WIN32 0) + set(LLVM_ON_UNIX 1) + else(CYGWIN) + set(LLVM_ON_WIN32 1) + set(LLVM_ON_UNIX 0) + + # This is effective only on Win32 hosts to use gnuwin32 tools. + set(LLVM_LIT_TOOLS_DIR "" CACHE PATH "Path to GnuWin32 tools") + endif(CYGWIN) + set(LTDL_SHLIB_EXT ".dll") + set(EXEEXT ".exe") + # Maximum path length is 160 for non-unicode paths + set(MAXPATHLEN 160) +else(WIN32) + if(UNIX) + set(LLVM_ON_WIN32 0) + set(LLVM_ON_UNIX 1) + if(APPLE) + set(LTDL_SHLIB_EXT ".dylib") + else(APPLE) + set(LTDL_SHLIB_EXT ".so") + endif(APPLE) + set(EXEEXT "") + # FIXME: Maximum path length is currently set to 'safe' fixed value + set(MAXPATHLEN 2024) + else(UNIX) + MESSAGE(SEND_ERROR "Unable to determine platform") + endif(UNIX) +endif(WIN32) + +if( LLVM_ENABLE_PIC ) + if( XCODE ) + # Xcode has -mdynamic-no-pic on by default, which overrides -fPIC. I don't + # know how to disable this, so just force ENABLE_PIC off for now. + message(WARNING "-fPIC not supported with Xcode.") + elseif( WIN32 ) + # On Windows all code is PIC. MinGW warns if -fPIC is used. + else() + include(CheckCXXCompilerFlag) + check_cxx_compiler_flag("-fPIC" SUPPORTS_FPIC_FLAG) + if( SUPPORTS_FPIC_FLAG ) + message(STATUS "Building with -fPIC") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC") + set(CMAKE_C_FLAGS "${CMAKE_CXX_FLAGS} -fPIC") + else( SUPPORTS_FPIC_FLAG ) + message(WARNING "-fPIC not supported.") + endif() + endif() +endif() + +if( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 ) + # TODO: support other platforms and toolchains. + option(LLVM_BUILD_32_BITS "Build 32 bits executables and libraries." OFF) + if( LLVM_BUILD_32_BITS ) + message(STATUS "Building 32 bits executables and libraries.") + add_llvm_definitions( -m32 ) + list(APPEND CMAKE_EXE_LINKER_FLAGS -m32) + list(APPEND CMAKE_SHARED_LINKER_FLAGS -m32) + endif( LLVM_BUILD_32_BITS ) +endif( CMAKE_SIZEOF_VOID_P EQUAL 8 AND NOT WIN32 ) + +if( MSVC ) + include(ChooseMSVCCRT) + + # Add definitions that make MSVC much less annoying. + add_llvm_definitions( + # For some reason MS wants to deprecate a bunch of standard functions... + -D_CRT_SECURE_NO_DEPRECATE + -D_CRT_SECURE_NO_WARNINGS + -D_CRT_NONSTDC_NO_DEPRECATE + -D_CRT_NONSTDC_NO_WARNINGS + -D_SCL_SECURE_NO_DEPRECATE + -D_SCL_SECURE_NO_WARNINGS + + -wd4146 # Suppress 'unary minus operator applied to unsigned type, result still unsigned' + -wd4180 # Suppress 'qualifier applied to function type has no meaning; ignored' + -wd4224 # Suppress 'nonstandard extension used : formal parameter 'identifier' was previously defined as a type' + -wd4244 # Suppress ''argument' : conversion from 'type1' to 'type2', possible loss of data' + -wd4267 # Suppress ''var' : conversion from 'size_t' to 'type', possible loss of data' + -wd4275 # Suppress 'An exported class was derived from a class that was not exported.' + -wd4291 # Suppress ''declaration' : no matching operator delete found; memory will not be freed if initialization throws an exception' + -wd4345 # Suppress 'behavior change: an object of POD type constructed with an initializer of the form () will be default-initialized' + -wd4351 # Suppress 'new behavior: elements of array 'array' will be default initialized' + -wd4355 # Suppress ''this' : used in base member initializer list' + -wd4503 # Suppress ''identifier' : decorated name length exceeded, name was truncated' + -wd4624 # Suppress ''derived class' : destructor could not be generated because a base class destructor is inaccessible' + -wd4715 # Suppress ''function' : not all control paths return a value' + -wd4800 # Suppress ''type' : forcing value to bool 'true' or 'false' (performance warning)' + -wd4065 # Suppress 'switch statement contains 'default' but no 'case' labels' + + -w14062 # Promote "enumerator in switch of enum is not handled" to level 1 warning. + ) + + # Enable warnings + if (LLVM_ENABLE_WARNINGS) + add_llvm_definitions( /W4 /Wall ) + if (LLVM_ENABLE_PEDANTIC) + # No MSVC equivalent available + endif (LLVM_ENABLE_PEDANTIC) + endif (LLVM_ENABLE_WARNINGS) + if (LLVM_ENABLE_WERROR) + add_llvm_definitions( /WX ) + endif (LLVM_ENABLE_WERROR) +elseif( CMAKE_COMPILER_IS_GNUCXX ) + if (LLVM_ENABLE_WARNINGS) + add_llvm_definitions( -Wall -W -Wno-unused-parameter -Wwrite-strings ) + if (LLVM_ENABLE_PEDANTIC) + add_llvm_definitions( -pedantic -Wno-long-long ) + endif (LLVM_ENABLE_PEDANTIC) + endif (LLVM_ENABLE_WARNINGS) + if (LLVM_ENABLE_WERROR) + add_llvm_definitions( -Werror ) + endif (LLVM_ENABLE_WERROR) +endif( MSVC ) + +add_llvm_definitions( -D__STDC_LIMIT_MACROS ) +add_llvm_definitions( -D__STDC_CONSTANT_MACROS ) + |
