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author | Nikolas Klauser <nikolasklauser@berlin.de> | 2023-02-20 16:26:19 +0100 |
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committer | Nikolas Klauser <nikolasklauser@berlin.de> | 2023-02-21 13:15:25 +0100 |
commit | 0af67d167d6c811abf12ad6c27ee34ec1365e5fb (patch) | |
tree | 79f07cfe6878d5a0c8489290dd4ecf23fd54803e /runtimes | |
parent | bbb58a2302c65b73943e00f2def3384a68177a7f (diff) | |
download | llvm-0af67d167d6c811abf12ad6c27ee34ec1365e5fb.zip llvm-0af67d167d6c811abf12ad6c27ee34ec1365e5fb.tar.gz llvm-0af67d167d6c811abf12ad6c27ee34ec1365e5fb.tar.bz2 |
[runtimes] Move common functions from Handle{Libcxx,Libcxxabi,Libunwind}Flags.cmake to runtimes/cmake/Modules/HandleFlags.cmake
Reviewed By: phosek, #libunwind, #libc, #libc_abi
Spies: arichardson, libcxx-commits
Differential Revision: https://reviews.llvm.org/D144395
Diffstat (limited to 'runtimes')
-rw-r--r-- | runtimes/cmake/Modules/HandleFlags.cmake | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/runtimes/cmake/Modules/HandleFlags.cmake b/runtimes/cmake/Modules/HandleFlags.cmake new file mode 100644 index 0000000..4a62b67 --- /dev/null +++ b/runtimes/cmake/Modules/HandleFlags.cmake @@ -0,0 +1,113 @@ + +include(CheckCXXCompilerFlag) + +unset(add_flag_if_supported) + +# Mangle the name of a compiler flag into a valid CMake identifier. +# Ex: --std=c++11 -> STD_EQ_CXX11 +macro(mangle_name str output) + string(STRIP "${str}" strippedStr) + string(REGEX REPLACE "^/" "" strippedStr "${strippedStr}") + string(REGEX REPLACE "^-+" "" strippedStr "${strippedStr}") + string(REGEX REPLACE "-+$" "" strippedStr "${strippedStr}") + string(REPLACE "-" "_" strippedStr "${strippedStr}") + string(REPLACE "=" "_EQ_" strippedStr "${strippedStr}") + string(REPLACE "+" "X" strippedStr "${strippedStr}") + string(TOUPPER "${strippedStr}" ${output}) +endmacro() + +# Remove a list of flags from all CMake variables that affect compile flags. +# This can be used to remove unwanted flags specified on the command line +# or added in other parts of LLVM's cmake configuration. +macro(remove_flags) + foreach(var ${ARGN}) + string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}") + string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL}") + string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE}") + string(REPLACE "${var}" "" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}") + string(REPLACE "${var}" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") + string(REPLACE "${var}" "" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}") + string(REPLACE "${var}" "" CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}") + string(REPLACE "${var}" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}") + string(REPLACE "${var}" "" CMAKE_SHARED_MODULE_FLAGS "${CMAKE_SHARED_MODULE_FLAGS}") + remove_definitions(${var}) + endforeach() +endmacro(remove_flags) + +macro(check_flag_supported flag) + mangle_name("${flag}" flagname) + check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG") +endmacro() + +macro(append_flags DEST) + foreach(value ${ARGN}) + list(APPEND ${DEST} ${value}) + list(APPEND ${DEST} ${value}) + endforeach() +endmacro() + +# If the specified 'condition' is true then append the specified list of flags to DEST +macro(append_flags_if condition DEST) + if (${condition}) + list(APPEND ${DEST} ${ARGN}) + endif() +endmacro() + +# Add each flag in the list specified by DEST if that flag is supported by the current compiler. +macro(append_flags_if_supported DEST) + foreach(flag ${ARGN}) + mangle_name("${flag}" flagname) + check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG") + append_flags_if(CXX_SUPPORTS_${flagname}_FLAG ${DEST} ${flag}) + endforeach() +endmacro() + +# Add a macro definition if condition is true. +macro(define_if condition def) + if (${condition}) + add_definitions(${def}) + endif() +endmacro() + +# Add a macro definition if condition is not true. +macro(define_if_not condition def) + if (NOT ${condition}) + add_definitions(${def}) + endif() +endmacro() + +# Add a macro definition to the __config_site file if the specified condition +# is 'true'. Note that '-D${def}' is not added. Instead it is expected that +# the build include the '__config_site' header. +macro(config_define_if condition def) + if (${condition}) + set(${def} ON) + endif() +endmacro() + +macro(config_define_if_not condition def) + if (NOT ${condition}) + set(${def} ON) + endif() +endmacro() + +macro(config_define value def) + set(${def} ${value}) +endmacro() + +# Turn a comma separated CMake list into a space separated string. +macro(split_list listname) + string(REPLACE ";" " " ${listname} "${${listname}}") +endmacro() + +# For each specified flag, add that compile flag to the provided target. +# The flags are added with the given visibility, i.e. PUBLIC|PRIVATE|INTERFACE. +function(target_add_compile_flags_if_supported target visibility) + foreach(flag ${ARGN}) + mangle_name("${flag}" flagname) + check_cxx_compiler_flag("${flag}" "CXX_SUPPORTS_${flagname}_FLAG") + if (CXX_SUPPORTS_${flagname}_FLAG) + target_compile_options(${target} ${visibility} ${flag}) + endif() + endforeach() +endfunction() |