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function(collect_object_file_deps target result)
set(all_deps "")
get_target_property(target_type ${target} "TARGET_TYPE")
if(NOT target_type)
return()
endif()
if(${target_type} STREQUAL ${OBJECT_LIBRARY_TARGET_TYPE})
list(APPEND all_deps ${target})
get_target_property(deps ${target} "DEPS")
foreach(dep IN LISTS deps)
collect_object_file_deps(${dep} dep_targets)
list(APPEND all_deps ${dep_targets})
endforeach(dep)
set(${result} ${all_deps} PARENT_SCOPE)
return()
endif()
if(${target_type} STREQUAL ${ENTRYPOINT_OBJ_TARGET_TYPE})
set(entrypoint_target ${target})
get_target_property(is_alias ${entrypoint_target} "IS_ALIAS")
if(is_alias)
get_target_property(aliasee ${entrypoint_target} "DEPS")
if(NOT aliasee)
message(FATAL_ERROR
"Entrypoint alias ${entrypoint_target} does not have an aliasee.")
endif()
set(entrypoint_target ${aliasee})
endif()
list(APPEND all_deps ${entrypoint_target})
get_target_property(deps ${target} "DEPS")
foreach(dep IN LISTS deps)
collect_object_file_deps(${dep} dep_targets)
list(APPEND all_deps ${dep_targets})
endforeach(dep)
set(${result} ${all_deps} PARENT_SCOPE)
return()
endif()
endfunction(collect_object_file_deps)
# A rule to build a library from a collection of entrypoint objects.
# Usage:
# add_entrypoint_library(
# DEPENDS <list of add_entrypoint_object targets>
# EXT_DEPS <list of external object targets, no type checking is done>
# )
#
# NOTE: If one wants an entrypoint to be availabe in a library, then they will
# have to list the entrypoint target explicitly in the DEPENDS list. Implicit
# entrypoint dependencies will not be added to the library.
function(add_entrypoint_library target_name)
cmake_parse_arguments(
"ENTRYPOINT_LIBRARY"
"" # No optional arguments
"" # No single value arguments
"DEPENDS;EXT_DEPS" # Multi-value arguments
${ARGN}
)
if(NOT ENTRYPOINT_LIBRARY_DEPENDS)
message(FATAL_ERROR "'add_entrypoint_library' target requires a DEPENDS list "
"of 'add_entrypoint_object' targets.")
endif()
get_fq_deps_list(fq_deps_list ${ENTRYPOINT_LIBRARY_DEPENDS})
set(all_deps "")
foreach(dep IN LISTS fq_deps_list)
get_target_property(dep_type ${dep} "TARGET_TYPE")
if(NOT (${dep_type} STREQUAL ${ENTRYPOINT_OBJ_TARGET_TYPE}))
message(FATAL_ERROR "Dependency '${dep}' of 'add_entrypoint_collection' is "
"not an 'add_entrypoint_object' target.")
endif()
collect_object_file_deps(${dep} recursive_deps)
list(APPEND all_deps ${recursive_deps})
endforeach(dep)
list(REMOVE_DUPLICATES all_deps)
set(objects "")
foreach(dep IN LISTS all_deps)
list(APPEND objects $<TARGET_OBJECTS:${dep}>)
endforeach(dep)
foreach(dep IN LISTS ENTRYPOINT_LIBRARY_EXT_DEPS)
list(APPEND objects $<TARGET_OBJECTS:${dep}>)
endforeach(dep)
add_library(
${target_name}
STATIC
${objects}
)
set_target_properties(${target_name} PROPERTIES ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
endfunction(add_entrypoint_library)
# Rule to build a shared library of redirector objects.
function(add_redirector_library target_name)
cmake_parse_arguments(
"REDIRECTOR_LIBRARY"
""
""
"DEPENDS"
${ARGN}
)
set(obj_files "")
foreach(dep IN LISTS REDIRECTOR_LIBRARY_DEPENDS)
# TODO: Ensure that each dep is actually a add_redirector_object target.
list(APPEND obj_files $<TARGET_OBJECTS:${dep}>)
endforeach(dep)
# TODO: Call the linker explicitly instead of calling the compiler driver to
# prevent DT_NEEDED on C++ runtime.
add_library(
${target_name}
EXCLUDE_FROM_ALL
SHARED
${obj_files}
)
set_target_properties(${target_name} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
target_link_libraries(${target_name} -nostdlib -lc -lm)
set_target_properties(${target_name} PROPERTIES LINKER_LANGUAGE "C")
endfunction(add_redirector_library)
set(HDR_LIBRARY_TARGET_TYPE "HDR_LIBRARY")
# Rule to add header only libraries.
# Usage
# add_header_library(
# <target name>
# HDRS <list of .h files part of the library>
# DEPENDS <list of dependencies>
# )
function(add_header_library target_name)
cmake_parse_arguments(
"ADD_HEADER"
"" # No optional arguments
"" # No Single value arguments
"HDRS;DEPENDS" # Multi-value arguments
${ARGN}
)
if(NOT ADD_HEADER_HDRS)
message(FATAL_ERROR "'add_header_library' target requires a HDRS list of .h files.")
endif()
get_fq_target_name(${target_name} fq_target_name)
set(FULL_HDR_PATHS "")
# TODO: Remove this foreach block when we can switch to the new
# version of the CMake policy CMP0076.
foreach(hdr IN LISTS ADD_HEADER_HDRS)
list(APPEND FULL_HDR_PATHS ${CMAKE_CURRENT_SOURCE_DIR}/${hdr})
endforeach()
set(interface_target_name "${fq_target_name}.__header_library__")
add_library(${interface_target_name} INTERFACE)
target_sources(${interface_target_name} INTERFACE ${FULL_HDR_PATHS})
get_fq_deps_list(fq_deps_list ${ADD_HEADER_DEPENDS})
if(ADD_HEADER_DEPENDS)
add_dependencies(${interface_target_name} ${fq_deps_list})
endif()
add_custom_target(${fq_target_name})
add_dependencies(${fq_target_name} ${interface_target_name})
set_target_properties(
${fq_target_name}
PROPERTIES
"TARGET_TYPE" "${HDR_LIBRARY_TARGET_TYPE}"
"DEPS" "${fq_deps_list}"
)
endfunction(add_header_library)
|
