mirror of
https://github.com/panda3d/panda3d.git
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CMake: Add an export_packages() function to export PKG::*
This is needed to support install(EXPORT)
This commit is contained in:
Sam Edwards
parent
c50bf63aee
commit
b20c6e801c
@ -51,6 +51,8 @@
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# calls to package_status above.
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#
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set(_ALL_PACKAGE_OPTIONS CACHE INTERNAL "Internal variable")
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#
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# package_option
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#
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@ -146,11 +148,12 @@ function(package_option name)
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# Prevent the function from being called twice.
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# This would indicate a cmake error.
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if(PANDA_DID_SET_OPTION_${name})
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if(";${_ALL_PACKAGE_OPTIONS};" MATCHES ";${name};")
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message(SEND_ERROR "package_option(${name}) was called twice.
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This is a bug in the cmake build scripts.")
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else()
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set(PANDA_DID_SET_OPTION_${name} TRUE PARENT_SCOPE)
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list(APPEND _ALL_PACKAGE_OPTIONS "${name}")
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set(_ALL_PACKAGE_OPTIONS "${_ALL_PACKAGE_OPTIONS}" CACHE INTERNAL "Internal variable")
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endif()
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set(PANDA_PACKAGE_DEFAULT_${name} "${default}" PARENT_SCOPE)
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@ -176,15 +179,23 @@ function(package_option name)
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if(HAVE_${name})
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set(use_variables ON)
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# This is gross, but we actually want to hide package include directories
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# from Interrogate to make sure it relies on parser-inc instead, so we'll
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# use some generator expressions to do that.
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set(_is_not_interface_lib
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"$<NOT:$<STREQUAL:$<TARGET_PROPERTY:TYPE>,INTERFACE_LIBRARY>>")
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set(_is_not_interrogate
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"$<NOT:$<BOOL:$<${_is_not_interface_lib}:$<TARGET_PROPERTY:IS_INTERROGATE>>>>")
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foreach(implib ${imported_as})
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if(TARGET ${implib})
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# We found one of the implibs, so we don't need to use variables
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# (below) anymore
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set(use_variables OFF)
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# Yes, this is ugly. See below for an explanation.
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# Hide it from Interrogate
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target_link_libraries(PKG::${name} INTERFACE
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"$<$<NOT:$<BOOL:$<TARGET_PROPERTY:IS_INTERROGATE>>>:${implib}>")
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"$<${_is_not_interrogate}:$<TARGET_NAME:${implib}>>")
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endif()
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endforeach(implib)
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@ -202,11 +213,9 @@ function(package_option name)
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target_link_libraries(PKG::${name} INTERFACE ${libs})
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# This is gross, but we actually want to hide package include directories
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# from Interrogate to make sure it relies on parser-inc instead, so we'll
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# use some generator expressions to do that.
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set_target_properties(PKG::${name} PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
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"$<$<NOT:$<BOOL:$<TARGET_PROPERTY:IS_INTERROGATE>>>:${includes}>")
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# Hide it from Interrogate
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set_target_properties(PKG::${name} PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "$<${_is_not_interrogate}:${includes}>")
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endif()
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endif()
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endfunction(package_option)
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@ -222,13 +231,13 @@ function(package_status name desc)
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set(note "${arg}")
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endforeach()
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if(NOT PANDA_DID_SET_OPTION_${name})
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if(NOT ";${_ALL_PACKAGE_OPTIONS};" MATCHES ";${name};")
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message(SEND_ERROR "package_status(${name}) was called before package_option(${name}).
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This is a bug in the cmake build scripts.")
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return()
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endif()
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list(FIND _ALL_CONFIG_PACKAGES "${name}" called_twice)
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if(called_twice GREATER -1)
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if(";${_ALL_CONFIG_PACKAGES};" MATCHES ";${name};")
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message(SEND_ERROR "package_status(${name}) was called twice.
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This is a bug in the cmake build scripts.")
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else()
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@ -269,6 +278,98 @@ function(show_packages)
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endforeach()
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endfunction()
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#
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# export_packages(filename)
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#
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# Generates an includable CMake file that contains definitions for every PKG::
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# package defined.
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#
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function(export_packages filename)
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set(exports "# Exports for Panda3D PKG:: packages\n")
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foreach(pkg ${_ALL_PACKAGE_OPTIONS})
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set(exports "${exports}\n# Create imported target PKG::${pkg}\n")
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set(exports "${exports}add_library(PKG::${pkg} INTERFACE IMPORTED)\n\n")
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set(exports "${exports}set_target_properties(PKG::${pkg} PROPERTIES\n")
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foreach(prop
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INTERFACE_COMPILE_DEFINITIONS
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INTERFACE_COMPILE_FEATURES
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INTERFACE_COMPILE_OPTIONS
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INTERFACE_INCLUDE_DIRECTORIES
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INTERFACE_LINK_DEPENDS
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INTERFACE_LINK_DIRECTORIES
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INTERFACE_LINK_OPTIONS
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INTERFACE_POSITION_INDEPENDENT_CODE
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#INTERFACE_SYSTEM_INCLUDE_DIRECTORIES # Let the consumer dictate this
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INTERFACE_SOURCES)
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set(prop_ex "$<TARGET_PROPERTY:PKG::${pkg},${prop}>")
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set(exports "${exports}$<$<BOOL:${prop_ex}>: ${prop} \"${prop_ex}\"\n>")
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endforeach(prop)
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# Ugh, INTERFACE_LINK_LIBRARIES isn't transitive. Fine. Take care of it
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# by hand:
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set(libraries)
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set(stack "PKG::${pkg}")
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set(history)
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while(stack)
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# Remove head item from stack
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list(GET stack 0 head)
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list(REMOVE_AT stack 0)
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# Don't visit anything twice
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list(FIND history "${head}" _index)
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if(_index GREATER -1)
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continue()
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else()
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list(APPEND history "${head}")
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endif()
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# If head isn't a target, add it to `libraries`, else recurse
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if(TARGET "${head}")
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get_target_property(link_libs "${head}" INTERFACE_LINK_LIBRARIES)
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if(link_libs)
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list(APPEND stack ${link_libs})
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endif()
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get_target_property(type "${head}" TYPE)
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if(NOT type STREQUAL "INTERFACE_LIBRARY")
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get_target_property(imported_location "${head}" IMPORTED_LOCATION)
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if(imported_location)
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list(APPEND libraries ${imported_location})
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endif()
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get_target_property(configs "${head}" IMPORTED_CONFIGURATIONS)
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if(configs AND NOT imported_location)
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foreach(config ${configs})
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get_target_property(imported_location "${head}" IMPORTED_LOCATION_${config})
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if(imported_location)
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if(configs MATCHES ".*;.*")
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set(_bling "$<1:$>") # genex-escaped $
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list(APPEND libraries "${_bling}<${_bling}<CONFIG:${config}>:${imported_location}>")
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else()
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list(APPEND libraries ${imported_location})
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endif()
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endif()
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endforeach(config)
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endif()
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endif()
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elseif("${head}" MATCHES "\\$<TARGET_NAME:\([^>]+\)>")
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string(REGEX REPLACE ".*\\$<TARGET_NAME:\([^>]+\)>.*" "\\1" match "${head}")
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list(APPEND stack "${match}")
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else()
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list(APPEND libraries "${head}")
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endif()
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endwhile(stack)
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set(exports "${exports} INTERFACE_LINK_LIBRARIES \"${libraries}\"\n")
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set(exports "${exports})\n")
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endforeach(pkg)
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file(GENERATE OUTPUT "${filename}" CONTENT "${exports}")
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endfunction(export_packages)
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#
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# find_package
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#
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