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CMake: When building metalib components, properly flag SYSTEM include dirs

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This commit is contained in:
Sam Edwards 2018-10-18 02:26:38 -06:00
parent 5c166e6cdc
commit dd5c411e88
2 changed files with 18 additions and 0 deletions
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6
cmake/macros/BuildMetalib.cmake
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@ -31,6 +31,12 @@ if(CMAKE_VERSION VERSION_LESS "3.12")
set_property(TARGET "${target}" APPEND PROPERTY INCLUDE_DIRECTORIES "${include_directories}")
set_property(TARGET "${target}" APPEND PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${include_directories}")
# SYSTEM include directories should still be reported as SYSTEM, so
# that warnings from those includes are suppressed
set(sys_include_directories
"$<TARGET_PROPERTY:${library},INTERFACE_SYSTEM_INCLUDE_DIRECTORIES>")
target_include_directories("${target}" SYSTEM PUBLIC "${sys_include_directories}")
# And for INTERFACE_COMPILE_DEFINITIONS as well
set(compile_definitions "$<TARGET_PROPERTY:${library},INTERFACE_COMPILE_DEFINITIONS>")
set_property(TARGET "${target}" APPEND PROPERTY COMPILE_DEFINITIONS "${compile_definitions}")

12
cmake/macros/PackageConfig.cmake
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@ -158,6 +158,18 @@ function(package_option name)
# Create the INTERFACE library used to depend on this package.
add_library(PKG::${name} INTERFACE IMPORTED GLOBAL)
# Explicitly record the package's include directories as system include
# directories. CMake does do this automatically for INTERFACE libraries, but
# it does it by discovering all transitive links first, then reading
# INTERFACE_INCLUDE_DIRECTORIES for those which are INTERFACE libraries. So,
# this would be broken for the metalib system (pre CMake 3.12) which doesn't
# "link" the object libraries.
if(CMAKE_VERSION VERSION_LESS "3.12")
set_target_properties(PKG::${name} PROPERTIES
INTERFACE_SYSTEM_INCLUDE_DIRECTORIES
"$<TARGET_PROPERTY:PKG::${name},INTERFACE_INCLUDE_DIRECTORIES>")
endif()
# Create the option, and if it actually is enabled, populate the INTERFACE
# library created above
option("HAVE_${name}" "${cache_string}" "${default}")