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# Export a pkg-config file
# Inspect linked libraries
function(resolve_pc_libs out_var root_target)
set(_result "")
set(_visited "")
function(_resolve target)
# Prevent infinite recursion
if(target IN_LIST _visited)
return()
endif()
list(APPEND _visited "${target}")
set(_visited "${_visited}" PARENT_SCOPE)
if(TARGET "${target}")
# Recurse into PUBLIC/INTERFACE deps first
get_target_property(deps "${target}" INTERFACE_LINK_LIBRARIES)
if(deps)
foreach(dep IN LISTS deps)
_resolve("${dep}")
endforeach()
endif()
# Now append the target itself (if it produces a library)
get_target_property(type "${target}" TYPE)
if(type MATCHES "STATIC_LIBRARY|SHARED_LIBRARY")
get_target_property(name "${target}" OUTPUT_NAME)
if(NOT name)
set(name "${target}")
endif()
list(APPEND _result "-l${name}")
endif()
else()
# Plain linker flag or library
list(APPEND _result "${target}")
endif()
set(_result "${_result}" PARENT_SCOPE)
endfunction()
_resolve("${root_target}")
# Remove the duplicates by keeping the first occurrence
list(REMOVE_DUPLICATES _result)
# Reverse the order
list(REVERSE _result)
set(${out_var} "${_result}" PARENT_SCOPE)
endfunction()
resolve_pc_libs(PC_LIBS ${PROJECT_NAME})
string(REPLACE ";" " " PC_CONTENT "${PC_LIBS}")
configure_file(
"${CMAKE_CURRENT_SOURCE_DIR}/config/template.pc"
"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
@ONLY
)
install(
FILES
"${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig"
)
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