mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 11:13:28 +01:00
107 lines
3.8 KiB
CMake
107 lines
3.8 KiB
CMake
# The macro choose_msvc_crt() takes a list of possible
|
|
# C runtimes to choose from, in the form of compiler flags,
|
|
# to present to the user. (MTd for /MTd, etc)
|
|
#
|
|
# The macro is invoked at the end of the file.
|
|
#
|
|
# CMake already sets CRT flags in the CMAKE_CXX_FLAGS_* and
|
|
# CMAKE_C_FLAGS_* variables by default. To let the user
|
|
# override that for each build type:
|
|
# 1. Detect which CRT is already selected, and reflect this in
|
|
# LLVM_USE_CRT_* so the user can have a better idea of what
|
|
# changes they're making.
|
|
# 2. Replace the flags in both variables with the new flag via a regex.
|
|
# 3. set() the variables back into the cache so the changes
|
|
# are user-visible.
|
|
|
|
### Helper macros: ###
|
|
macro(make_crt_regex regex crts)
|
|
set(${regex} "")
|
|
foreach(crt ${${crts}})
|
|
# Trying to match the beginning or end of the string with stuff
|
|
# like [ ^]+ didn't work, so use a bunch of parentheses instead.
|
|
set(${regex} "${${regex}}|(^| +)/${crt}($| +)")
|
|
endforeach(crt)
|
|
string(REGEX REPLACE "^\\|" "" ${regex} "${${regex}}")
|
|
endmacro(make_crt_regex)
|
|
|
|
macro(get_current_crt crt_current regex flagsvar)
|
|
# Find the selected-by-CMake CRT for each build type, if any.
|
|
# Strip off the leading slash and any whitespace.
|
|
string(REGEX MATCH "${${regex}}" ${crt_current} "${${flagsvar}}")
|
|
string(REPLACE "/" " " ${crt_current} "${${crt_current}}")
|
|
string(STRIP "${${crt_current}}" ${crt_current})
|
|
endmacro(get_current_crt)
|
|
|
|
# Replaces or adds a flag to a variable.
|
|
# Expects 'flag' to be padded with spaces.
|
|
macro(set_flag_in_var flagsvar regex flag)
|
|
string(REGEX MATCH "${${regex}}" current_flag "${${flagsvar}}")
|
|
if("${current_flag}" STREQUAL "")
|
|
set(${flagsvar} "${${flagsvar}}${${flag}}")
|
|
else()
|
|
string(REGEX REPLACE "${${regex}}" "${${flag}}" ${flagsvar} "${${flagsvar}}")
|
|
endif()
|
|
string(STRIP "${${flagsvar}}" ${flagsvar})
|
|
# Make sure this change gets reflected in the cache/gui.
|
|
# CMake requires the docstring parameter whenever set() touches the cache,
|
|
# so get the existing docstring and re-use that.
|
|
get_property(flagsvar_docs CACHE ${flagsvar} PROPERTY HELPSTRING)
|
|
set(${flagsvar} "${${flagsvar}}" CACHE STRING "${flagsvar_docs}" FORCE)
|
|
endmacro(set_flag_in_var)
|
|
|
|
|
|
macro(choose_msvc_crt MSVC_CRT)
|
|
if(LLVM_USE_CRT)
|
|
message(FATAL_ERROR
|
|
"LLVM_USE_CRT is deprecated. Use the CMAKE_BUILD_TYPE-specific
|
|
variables (LLVM_USE_CRT_DEBUG, etc) instead.")
|
|
endif()
|
|
|
|
make_crt_regex(MSVC_CRT_REGEX ${MSVC_CRT})
|
|
|
|
foreach(build_type ${CMAKE_CONFIGURATION_TYPES} ${CMAKE_BUILD_TYPE})
|
|
string(TOUPPER "${build_type}" build)
|
|
if (NOT LLVM_USE_CRT_${build})
|
|
get_current_crt(LLVM_USE_CRT_${build}
|
|
MSVC_CRT_REGEX
|
|
CMAKE_CXX_FLAGS_${build})
|
|
set(LLVM_USE_CRT_${build}
|
|
"${LLVM_USE_CRT_${build}}"
|
|
CACHE STRING "Specify VC++ CRT to use for ${build_type} configurations."
|
|
FORCE)
|
|
set_property(CACHE LLVM_USE_CRT_${build}
|
|
PROPERTY STRINGS ;${${MSVC_CRT}})
|
|
endif(NOT LLVM_USE_CRT_${build})
|
|
endforeach(build_type)
|
|
|
|
foreach(build_type ${CMAKE_CONFIGURATION_TYPES} ${CMAKE_BUILD_TYPE})
|
|
string(TOUPPER "${build_type}" build)
|
|
if ("${LLVM_USE_CRT_${build}}" STREQUAL "")
|
|
set(flag_string " ")
|
|
else()
|
|
set(flag_string " /${LLVM_USE_CRT_${build}} ")
|
|
list(FIND ${MSVC_CRT} ${LLVM_USE_CRT_${build}} idx)
|
|
if (idx LESS 0)
|
|
message(FATAL_ERROR
|
|
"Invalid value for LLVM_USE_CRT_${build}: ${LLVM_USE_CRT_${build}}. Valid options are one of: ${${MSVC_CRT}}")
|
|
endif (idx LESS 0)
|
|
message(STATUS "Using ${build_type} VC++ CRT: ${LLVM_USE_CRT_${build}}")
|
|
endif()
|
|
foreach(lang C CXX)
|
|
set_flag_in_var(CMAKE_${lang}_FLAGS_${build} MSVC_CRT_REGEX flag_string)
|
|
endforeach(lang)
|
|
endforeach(build_type)
|
|
endmacro(choose_msvc_crt MSVC_CRT)
|
|
|
|
|
|
# List of valid CRTs for MSVC
|
|
set(MSVC_CRT
|
|
MD
|
|
MDd
|
|
MT
|
|
MTd)
|
|
|
|
choose_msvc_crt(MSVC_CRT)
|
|
|