#[=======================================================================[.rst:
FindFX
------------

Find the FX library and header directories

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

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

``FX::FX``
The FX library, if found

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

This module will set the following variables in your project:

``FX_FOUND``
true if the FX C headers and libraries were found
``FX_INCLUDE_DIR``
directories containing the FX C headers.

``FX_LIBRARY``
the C library to link against

Hints
^^^^^

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

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

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

set(assemblies ${FX_FIND_COMPONENTS})
set(required_vars)

if (NOT FX_INCLUDE_DIR)
	find_path(FX_INCLUDE_DIR
		NAMES fx/misc.h ${FX_FIND_ARGS}
		PATH_SUFFIXES include
		PATHS ${FX_SEARCH_PATHS})
endif ()

set(required_vars FX_INCLUDE_DIR)

foreach (assembly ${assemblies})
	string(TOLOWER ${assembly} header_name)
	string(REPLACE "." "_" macro_name ${assembly})
	string(TOUPPER ${macro_name} macro_name)

	set(lib_name ${assembly}${_lib_suffix})

	if (NOT ${macro_name}_LIBRARY)
		find_library(${macro_name}_LIBRARY
			NAMES ${lib_name} ${FX_FIND_ARGS}
			PATH_SUFFIXES lib
			PATHS ${FX_SEARCH_PATHS})
	else ()
		# on Windows, ensure paths are in canonical format (forward slahes):
		file(TO_CMAKE_PATH "${${macro_name}_LIBRARY}" ${macro_name}_LIBRARY)
	endif()

	list(APPEND required_vars ${macro_name}_LIBRARY)
endforeach (assembly)

unset(FX_FIND_ARGS)

include(FindPackageHandleStandardArgs)

find_package_handle_standard_args(FX
	REQUIRED_VARS ${required_vars})

if (FX_FOUND)
	set(created_targets)
	foreach (assembly ${assemblies})
		set(target_name ${assembly})
		string(REPLACE "fx." "" target_name ${target_name})
		string(SUBSTRING ${target_name} 0 1 target_name_prefix)
		string(TOUPPER ${target_name_prefix} target_name_prefix)
		string(SUBSTRING ${target_name} 1 -1 target_name_suffix)
		set(target_name ${target_name_prefix}${target_name_suffix})

		string(TOLOWER ${assembly} header_name)
		string(REPLACE "." "_" macro_name ${assembly})
		string(REPLACE "." "_" macro_name ${assembly})
		string(TOUPPER ${macro_name} macro_name)

		set(lib_name ${assembly}${_lib_suffix})

		if (NOT TARGET FX::${target_name})
			add_library(FX::${target_name} UNKNOWN IMPORTED)
			set_target_properties(FX::${target_name} PROPERTIES
				INTERFACE_INCLUDE_DIRECTORIES "${FX_INCLUDE_DIR}")
			target_compile_definitions(FX::${target_name} INTERFACE _CRT_SECURE_NO_WARNINGS=1)

			if (FX_STATIC)
				target_compile_definitions(FX::${target_name} INTERFACE FX_STATIC=1)
			endif ()

			set_target_properties(FX::${target_name} PROPERTIES
				IMPORTED_LINK_INTERFACE_LANGUAGES "C"
				IMPORTED_LOCATION "${${macro_name}_LIBRARY}")
			set(created_targets ${created_targets} ${assembly})
		endif ()
	endforeach (assembly)
endif()