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[cmake] In extract_flags allow extraction of BUILD_INTERFACE flags

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This commit is contained in:
Nils Wentzell 2020-05-15 14:43:08 -04:00
parent dbed8f20d5
commit aea8d18739
2 changed files with 15 additions and 4 deletions
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2
doc/CMakeLists.txt
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@ -6,7 +6,7 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/conf.py.in ${CMAKE_CURRENT_BINARY_DIR
# -----------------------------------------------------------------------------
add_custom_target(${PROJECT_NAME}_docs_cpp2rst)
include(${PROJECT_SOURCE_DIR}/share/cmake/extract_flags.cmake)
extract_flags(app4triqs_c)
extract_flags(app4triqs_c BUILD_INTERFACE)
separate_arguments(app4triqs_c_CXXFLAGS)
macro(generate_docs header_file)
add_custom_command(

17
share/cmake/extract_flags.cmake
View File

@ -51,7 +51,13 @@ macro(get_property_recursive)
endmacro()
# Recursively fetch all compiler flags attached to the interface of a target
macro(extract_flags target)
macro(extract_flags)
cmake_parse_arguments(ARG "BUILD_INTERFACE" "" "" ${ARGN})
set(target ${ARGV0})
unset(${target}_CXXFLAGS)
unset(${target}_LDFLAGS)
get_property_recursive(opts TARGET ${target} PROPERTY INTERFACE_COMPILE_OPTIONS)
foreach(opt ${opts})
@ -84,8 +90,13 @@ macro(extract_flags target)
endforeach()
# We have to replace generator expressions explicitly
string(REGEX REPLACE "\\$<INSTALL_INTERFACE:([^ ]*)>" "\\1" ${target}_LDFLAGS "${${target}_LDFLAGS}")
string(REGEX REPLACE "\\$<INSTALL_INTERFACE:([^ ]*)>" "\\1" ${target}_CXXFLAGS "${${target}_CXXFLAGS}")
if(ARG_BUILD_INTERFACE)
string(REGEX REPLACE "\\$<BUILD_INTERFACE:([^ ]*)>" "\\1" ${target}_LDFLAGS "${${target}_LDFLAGS}")
string(REGEX REPLACE "\\$<BUILD_INTERFACE:([^ ]*)>" "\\1" ${target}_CXXFLAGS "${${target}_CXXFLAGS}")
else()
string(REGEX REPLACE "\\$<INSTALL_INTERFACE:([^ ]*)>" "\\1" ${target}_LDFLAGS "${${target}_LDFLAGS}")
string(REGEX REPLACE "\\$<INSTALL_INTERFACE:([^ ]*)>" "\\1" ${target}_CXXFLAGS "${${target}_CXXFLAGS}")
endif()
string(REGEX REPLACE " [^ ]*\\$<[^ ]*:[^>]*>" "" ${target}_LDFLAGS "${${target}_LDFLAGS}")
string(REGEX REPLACE " [^ ]*\\$<[^ ]*:[^>]*>" "" ${target}_CXXFLAGS "${${target}_CXXFLAGS}")
endmacro()