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cmake: pass target C++ standard to pkgconfig generator

This commit is contained in:
Eugene Shalygin 2018-05-26 01:57:32 +02:00 committed by Arvid Norberg
parent d6cecee8c0
commit 287f299314
1 changed files with 26 additions and 1 deletions
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27
cmake/Modules/GeneratePkgConfig.cmake
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@ -9,6 +9,24 @@ set(_GeneratePkGConfigDir "${CMAKE_CURRENT_LIST_DIR}/GeneratePkgConfig")
include(GNUInstallDirs)
function(_compile_features_to_gcc_flags _res _features)
set(features ${_features})
# leave only cxx_std_nn items
list(FILTER features INCLUDE REGEX cxx_std_)
if (${features} STREQUAL "")
set(${_res} "" PARENT_SCOPE)
else()
# if there are more than a single cxx_std_nn feature...
list(SORT features)
# take the most recent standard, i.e. the last element
list(GET features -1 standard)
# cmake calls it cxx_std_98, but we (obviously) want -std=c++03
string(REPLACE 98 03 standard "${standard}")
string(REPLACE cxx_std_ -std=c++ standard "${standard}")
set(${_res} "${standard}" PARENT_SCOPE)
endif()
endfunction()
function(_get_target_property_merging_configs _var_name _target_name _propert_name)
get_target_property(vals ${_target_name} ${_propert_name})
if (NOT vals)
@ -31,8 +49,9 @@ function(_get_target_property_merging_configs _var_name _target_name _propert_na
endif()
endforeach()
endif()
# HACK file(GENERATE), which we use foe expanding generator expressions, is BUILD_INTERFACE,
# HACK file(GENERATE), which we use for expanding generator expressions, is BUILD_INTERFACE,
# but we need INSTALL_INTERFACE here. As such, let us inter-change them.
# See https://gitlab.kitware.com/cmake/cmake/issues/17984
string(REPLACE "$<BUILD_INTERFACE:" "$<TMP_INTERFACE:" vals "${vals}")
string(REPLACE "$<INSTALL_INTERFACE:" "@CMAKE_INSTALL_PREFIX@/$<BUILD_INTERFACE:" vals "${vals}")
string(REPLACE "$<TMP_INTERFACE:" "$<INSTALL_INTERFACE:" vals "${vals}")
@ -70,6 +89,7 @@ function(_expand_targets _targets _libraries_var _include_dirs_var _compile_opti
_get_target_property_merging_configs(_iface_include_dirs ${_dep} INTERFACE_INCLUDE_DIRECTORIES)
_get_target_property_merging_configs(_iface_compile_options ${_dep} INTERFACE_COMPILE_OPTIONS)
_get_target_property_merging_configs(_iface_definitions ${_dep} INTERFACE_COMPILE_DEFINITIONS)
get_target_property(_iface_compile_features ${_dep} INTERFACE_COMPILE_FEATURES)
if (_imported_location)
list(APPEND _new_libs "${_imported_location}")
@ -87,6 +107,11 @@ function(_expand_targets _targets _libraries_var _include_dirs_var _compile_opti
list(APPEND _options "${_iface_compile_options}")
endif()
if (_iface_compile_features)
_compile_features_to_gcc_flags(features_flags ${_iface_compile_features})
list(APPEND _options ${features_flags})
endif()
if(_iface_definitions)
list(APPEND _defs "${_iface_definitions}")
endif()