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[cmake] In extract_flags.cmake inspect INTERFACE_COMPILE_FEATURES and add -std=.. flags accordingly

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Nils Wentzell 2021-02-01 09:42:03 -05:00
parent efad2fe6ef
commit 73aa51608e
1 changed files with 8 additions and 1 deletions
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9
share/cmake/extract_flags.cmake
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@ -12,7 +12,7 @@
#
# You may obtain a copy of the License at
# https://www.gnu.org/licenses/gpl-3.0.txt
# Author: Nils Wentzell
# Recursively fetch all targets that the interface of a target depends upon
macro(get_all_interface_targets name target)
@ -59,6 +59,13 @@ macro(extract_flags)
set(${target}_CXXFLAGS "${${target}_CXXFLAGS} ${opt}")
endforeach()
get_property_recursive(cxx_features TARGET ${target} PROPERTY INTERFACE_COMPILE_FEATURES)
if(cxx_std_20 IN_LIST cxx_features)
set(${target}_CXXFLAGS "${${target}_CXXFLAGS} -std=c++20")
elseif(cxx_std_17 IN_LIST cxx_features)
set(${target}_CXXFLAGS "${${target}_CXXFLAGS} -std=c++17")
endif()
get_property_recursive(defs TARGET ${target} PROPERTY INTERFACE_COMPILE_DEFINITIONS)
foreach(def ${defs})
set(${target}_CXXFLAGS "${${target}_CXXFLAGS} -D${def}")