bluelib/cmake/FindBluelib.cmake

#[=======================================================================[.rst:
FindBluelib
------------

Find the Bluelib library and header directories

Imported Targets
^^^^^^^^^^^^^^^^

This module defines the following :prop_tgt:`IMPORTED` target:

``Bluelib::Bluelib``
The Bluelib library, if found

Result Variables
^^^^^^^^^^^^^^^^

This module will set the following variables in your project:

``Bluelib_FOUND``
true if the Bluelib C headers and libraries were found
``Bluelib_INCLUDE_DIR``
directories containing the Bluelib C headers.

``Bluelib_LIBRARY``
the C library to link against

Hints
^^^^^

The user may set the environment variable ``Bluelib_PREFIX`` to the root
directory of a Bluelib library installation.
#]=======================================================================]

set (Bluelib_SEARCH_PATHS
	~/Library/Frameworks
	/Library/Frameworks
	/usr/local
	/usr/local/share
	/usr
	/sw # Fink
	/opt/local # DarwinPorts
	/opt/csw # Blastwave
	/opt
	${Bluelib_PREFIX}
	$ENV{Bluelib_PREFIX})

if (Bluelib_STATIC)
	set(_lib_suffix "-s")
endif ()

set(supported_components Core Ds Term Cmd Io Serial Compress)
set(components ${Bluelib_FIND_COMPONENTS})
string(REPLACE ";" ", " supported_components_string_list "${supported_components}")

if (NOT components)
	set(components ${supported_components})
endif ()

set(required_vars)

foreach (component ${components})
	if (NOT "${component}" IN_LIST supported_components)
		message(FATAL_ERROR "'${component}' is not a valid Bluelib module.\nSupported modules: ${supported_components_string_list}")
	endif ()

	string(TOLOWER ${component} header_name)
	set(lib_name ${header_name}${_lib_suffix})

	if (NOT Bluelib_${component}_INCLUDE_DIR)
		find_path(Bluelib_${component}_INCLUDE_DIR
			NAMES blue/${header_name}.h ${Bluelib_FIND_ARGS}
			PATH_SUFFIXES include
			PATHS ${Bluelib_SEARCH_PATHS})
	endif ()

	if (NOT Bluelib_${component}_LIBRARY)
		find_library(Bluelib_${component}_LIBRARY
			NAMES blue-${lib_name} ${Bluelib_FIND_ARGS}
			PATH_SUFFIXES lib
			PATHS ${Bluelib_SEARCH_PATHS})
	else ()
		# on Windows, ensure paths are in canonical format (forward slahes):
		file(TO_CMAKE_PATH "${Bluelib_${component}_LIBRARY}" Bluelib_${component}_LIBRARY)
	endif()

	list(APPEND required_vars Bluelib_${component}_INCLUDE_DIR Bluelib_${component}_LIBRARY)
endforeach (component)

unset(Bluelib_FIND_ARGS)

include(FindPackageHandleStandardArgs)

find_package_handle_standard_args(Bluelib
	REQUIRED_VARS ${required_vars})

if (Bluelib_FOUND)
	set(created_targets)
	foreach (component ${components})
		string(TOLOWER ${component} header_name)
		set(lib_name ${header_name}${_lib_suffix})

		if(NOT TARGET Bluelib::${component})
			add_library(Bluelib::${component} UNKNOWN IMPORTED)
			set_target_properties(Bluelib::${component} PROPERTIES
				INTERFACE_INCLUDE_DIRECTORIES "${Bluelib_${component}_INCLUDE_DIR}")
			target_compile_definitions(Bluelib::${component} INTERFACE _CRT_SECURE_NO_WARNINGS=1)

			if (Bluelib_STATIC)
				target_compile_definitions(Bluelib::${component} INTERFACE BLUELIB_STATIC=1)
			endif ()

			set_target_properties(Bluelib::${component} PROPERTIES
				IMPORTED_LINK_INTERFACE_LANGUAGES "C"
				IMPORTED_LOCATION "${Bluelib_${component}_LIBRARY}")
			set(created_targets ${created_targets} ${component})
		endif ()
	endforeach (component)

	foreach (component ${created_targets})
		if ("${component}" STREQUAL "Ds")
			if (NOT TARGET Bluelib::Core)
				message(FATAL_ERROR "Bluelib: Module 'Ds' depends on 'Core', which was not specified in find_package()")
			endif ()

			target_link_libraries(Bluelib::Ds INTERFACE Bluelib::Core)
		endif ()

		if ("${component}" STREQUAL "Term")
			if (NOT TARGET Bluelib::Core)
				message(FATAL_ERROR "Bluelib: Module 'Term' depends on 'Core', which was not specified in find_package()")
			endif ()

			if (NOT TARGET Bluelib::Ds)
				message(FATAL_ERROR "Bluelib: Module 'Term' depends on 'Ds', which was not specified in find_package()")
			endif ()

			target_link_libraries(Bluelib::Term INTERFACE Bluelib::Core Bluelib::Ds)
		endif ()

		if ("${component}" STREQUAL "Serial")
			if (NOT TARGET Bluelib::Core)
				message(FATAL_ERROR "Bluelib: Module 'Serial' depends on 'Core', which was not specified in find_package()")
			endif ()

			if (NOT TARGET Bluelib::Ds)
				message(FATAL_ERROR "Bluelib: Module 'Serial' depends on 'Ds', which was not specified in find_package()")
			endif ()

			target_link_libraries(Bluelib::Serial INTERFACE Bluelib::Core Bluelib::Ds)
		endif ()

		if ("${component}" STREQUAL "Cmd")
			if (NOT TARGET Bluelib::Core)
				message(FATAL_ERROR "Bluelib: Module 'Cmd' depends on 'Core', which was not specified in find_package()")
			endif ()

			if (NOT TARGET Bluelib::Ds)
				message(FATAL_ERROR "Bluelib: Module 'Cmd' depends on 'Ds', which was not specified in find_package()")
			endif ()

			if (NOT TARGET Bluelib::Term)
				message(FATAL_ERROR "Bluelib: Module 'Cmd' depends on 'Term', which was not specified in find_package()")
			endif ()

			target_link_libraries(Bluelib::Cmd INTERFACE Bluelib::Core Bluelib::Ds Bluelib::Term)
		endif ()

		if ("${component}" STREQUAL "Io")
			if (NOT TARGET Bluelib::Core)
				message(FATAL_ERROR "Bluelib: Module 'Io' depends on 'Core', which was not specified in find_package()")
			endif ()

			if (NOT TARGET Bluelib::Ds)
				message(FATAL_ERROR "Bluelib: Module 'Io' depends on 'Ds', which was not specified in find_package()")
			endif ()

			target_link_libraries(Bluelib::Io INTERFACE Bluelib::Core Bluelib::Ds)
		endif ()

		if ("${component}" STREQUAL "Compress")
			if (NOT TARGET Bluelib::Core)
				message(FATAL_ERROR "Bluelib: Module 'Compress' depends on 'Core', which was not specified in find_package()")
			endif ()

			target_link_libraries(Bluelib::Compress INTERFACE Bluelib::Core Bluelib::Ds)
		endif ()
	endforeach (component)
endif()