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@@ -62,15 +62,23 @@ function(target_link_libraries target)
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endfunction(target_link_libraries)
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#
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-# Function: add_component_library(target [SYMBOL building_symbol] [SOURCES])
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+# Function: add_component_library(target [SYMBOL building_symbol]
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+# [SOURCES] [[NOINIT]/[INIT func [header]]])
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#
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-# Used very similarly to add_library. You can specify a symbol with SYMBOL,
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+# Used very similarly to add_library. You can specify a symbol with SYMBOL,
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# which works like CMake's own DEFINE_SYMBOL property: it's defined when
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# building the library, but not when building something that links against the
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# library.
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#
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+# INIT specifies the init function that should be called from a metalib's init
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+# function when this is added to a metalib. The header parameter can further
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+# clarify what header declares this function. By default, this is
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+# init_libTARGET and config_TARGET.h, respectively, where TARGET is the
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+# target name (with 'p3' stripped off, if applicable). The NOINIT keyword
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+# suppresses this default.
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+#
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# Note that this function gets to decide whether the component library is
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-# OBJECT or SHARED, and whether the library is installed or not. Also, as
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+# OBJECT or SHARED, and whether the library is installed or not. Also, as
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# a rule, component libraries may only be linked by other component libraries
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# in the same metalib - outside of the metalib, you must link the metalib
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# itself.
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@@ -79,26 +87,50 @@ function(add_component_library target_name)
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set(sources)
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unset(symbol)
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+ if(target_name MATCHES "^p3.*")
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+ string(SUBSTRING "${target_name}" 2 -1 name_without_prefix)
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+ else()
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+ set(name_without_prefix "${target_name}")
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+ endif()
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+ set(init_func "init_lib${name_without_prefix}")
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+ set(init_header "config_${name_without_prefix}.h")
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+
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set(symbol_keyword OFF)
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+ set(init_keyword 0)
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foreach(source ${ARGN})
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if(source STREQUAL "SYMBOL")
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set(symbol_keyword ON)
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+ set(init_keyword 0)
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+ elseif(source STREQUAL "INIT")
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+ set(symbol_keyword OFF)
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+ set(init_keyword 2)
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+ elseif(source STREQUAL "NOINIT")
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+ set(init_func)
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+ set(init_header)
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elseif(symbol_keyword)
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set(symbol_keyword OFF)
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set(symbol "${source}")
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+ elseif(init_keyword EQUAL 2)
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+ set(init_func "${source}")
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+ set(init_keyword 1)
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+ elseif(init_keyword EQUAL 1)
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+ set(init_header "${source}")
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+ set(init_keyword 0)
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else()
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list(APPEND sources "${source}")
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endif()
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endforeach()
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-
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if(BUILD_METALIBS)
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add_library("${target_name}" OBJECT ${sources})
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else()
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add_library("${target_name}" ${sources})
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endif()
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- set_target_properties("${target_name}" PROPERTIES IS_COMPONENT ON)
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+ set_target_properties("${target_name}" PROPERTIES
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+ IS_COMPONENT ON
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+ INIT_FUNCTION "${init_func}"
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+ INIT_HEADER "${init_header}")
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if(symbol)
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# ... DEFINE_SYMBOL is apparently not respected for object libraries?
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set_property(TARGET "${target_name}" APPEND PROPERTY COMPILE_DEFINITIONS "${symbol}")
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@@ -116,19 +148,37 @@ function(add_component_library target_name)
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endfunction(add_component_library)
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#
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-# Function: add_metalib(target [source1 source2] [COMPONENTS component1 ...])
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+# Function: add_metalib(target [source1 source2] [INIT initfunc [initheader.h]]
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+# [COMPONENTS component1 ...])
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#
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# This is add_library, but for metalibs.
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#
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+# The INIT keyword can specify an initialization function/header (which will be
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+# autogenerated by this function) that calls the underlying component libs'
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+# init functions.
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+#
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function(add_metalib target_name)
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set(components_keyword OFF)
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+ set(init_keyword 0)
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+ set(init_func)
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+ set(init_header "${target_name}.h")
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set(components)
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set(sources)
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foreach(arg ${ARGN})
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if(arg STREQUAL "COMPONENTS")
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set(components_keyword ON)
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+ set(init_keyword 0)
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+ elseif(arg STREQUAL "INIT")
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+ set(init_keyword 2)
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+ set(components_keyword OFF)
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elseif(components_keyword)
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list(APPEND components "${arg}")
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+ elseif(init_keyword EQUAL 2)
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+ set(init_func "${arg}")
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+ set(init_keyword 1)
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+ elseif(init_keyword EQUAL 1)
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+ set(init_header "${arg}")
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+ set(init_keyword 0)
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else()
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list(APPEND sources "${arg}")
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endif()
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@@ -137,6 +187,8 @@ function(add_metalib target_name)
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set(defines)
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set(includes)
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set(libs)
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+ set(component_init_funcs "")
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+ set(component_init_headers "")
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foreach(component ${components})
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if(NOT TARGET "${component}")
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message(FATAL_ERROR
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@@ -149,6 +201,18 @@ function(add_metalib target_name)
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"Attempted to metalink non-component ${component} into ${target_name}!")
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endif()
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+ get_target_property(component_init_header "${component}" INIT_HEADER)
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+ get_target_property(component_init_func "${component}" INIT_FUNCTION)
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+
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+ if(component_init_header)
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+ set(component_init_headers
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+ "${component_init_headers}#include \"${component_init_header}\"\n")
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+ endif()
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+ if(component_init_func)
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+ set(component_init_funcs
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+ "${component_init_funcs} ${component_init_func}();\n")
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+ endif()
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+
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if(BUILD_METALIBS)
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list(APPEND defines "$<TARGET_PROPERTY:${component},COMPILE_DEFINITIONS>")
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list(APPEND includes "$<TARGET_PROPERTY:${component},INTERFACE_INCLUDE_DIRECTORIES>")
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@@ -159,6 +223,17 @@ function(add_metalib target_name)
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endif()
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endforeach()
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+ if(init_func)
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+ set(init_source_path "${CMAKE_CURRENT_BINARY_DIR}/init_${target_name}.cxx")
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+ set(init_header_path "${CMAKE_CURRENT_BINARY_DIR}/${init_header}")
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+
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+ configure_file("${PROJECT_SOURCE_DIR}/cmake/templates/metalib_init.cxx.in" "${init_source_path}")
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+ list(APPEND sources "${init_source_path}")
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+
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+ configure_file("${PROJECT_SOURCE_DIR}/cmake/templates/metalib_init.h.in" "${init_header_path}")
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+ install(FILES "${init_header_path}" DESTINATION include/panda3d)
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+ endif()
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+
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add_library("${target_name}" ${sources})
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target_compile_definitions("${target_name}" PRIVATE ${defines})
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target_link_libraries("${target_name}" ${libs})
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Sam Edwards