Add CMakeLists.txt files + cmake/ helpers

1 files changed, 241 insertions, 0 deletions

diff --git a/cmake/UseVala.cmake b/cmake/UseVala.cmake
new file mode 100644
index 0000000..f0202e2
--- /dev/null
+++ b/cmake/UseVala.cmake
@@ -0,0 +1,241 @@
+# - Precompilation of Vala/Genie source files into C sources
+# Makes use of the parallel build ability introduced in Vala 0.11. Derived
+# from a similar module by Jakob Westhoff and the original GNU Make rules.
+# Might be a bit oversimplified.
+#
+# This module defines three functions. The first one:
+#
+#   vala_init (id
+#     [DIRECTORY dir]          - Output directory (binary dir by default)
+#     [PACKAGES package...]    - Package dependencies
+#     [OPTIONS option...]      - Extra valac options
+#     [CUSTOM_VAPIS file...])  - Custom vapi files to include in the build
+#     [DEPENDS targets...])    - Extra dependencies for code generation
+#
+# initializes a single precompilation unit using the given arguments.
+# You can put files into it via the following function:
+#
+#   vala_add (id source.vala
+#     [DEPENDS source...])     - Vala/Genie source or .vapi dependencies
+#
+# Finally retrieve paths for generated C files by calling:
+#
+#   vala_finish (id
+#     [SOURCES sources_var]          - Input Vala/Genie sources
+#     [OUTPUTS outputs_var]          - Output C sources
+#     [GENERATE_HEADER id.h          - Generate id.h and id_internal.h
+#       [GENERATE_VAPI id.vapi]      - Generate a vapi file
+#       [GENERATE_SYMBOLS id.def]])  - Generate a list of public symbols
+#
+
+#=============================================================================
+# Copyright Přemysl Janouch 2011
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+# OF SUCH DAMAGE.
+#=============================================================================
+
+find_package (Vala 0.20 REQUIRED)
+include (CMakeParseArguments)
+
+function (vala_init id)
+	set (_multi_value PACKAGES OPTIONS CUSTOM_VAPIS DEPENDS)
+	cmake_parse_arguments (arg "" "DIRECTORY" "${_multi_value}" ${ARGN})
+
+	if (arg_DIRECTORY)
+		set (directory ${arg_DIRECTORY})
+		if (NOT IS_DIRECTORY ${directory})
+			file (MAKE_DIRECTORY ${directory})
+		endif (NOT IS_DIRECTORY ${directory})
+	else (arg_DIRECTORY)
+		set (directory ${CMAKE_CURRENT_BINARY_DIR})
+	endif (arg_DIRECTORY)
+
+	set (pkg_opts)
+	foreach (pkg ${arg_PACKAGES})
+		list (APPEND pkg_opts "--pkg=${pkg}")
+	endforeach (pkg)
+
+	set (VALA_${id}_DIR "${directory}" PARENT_SCOPE)
+	set (VALA_${id}_ARGS ${pkg_opts} ${arg_OPTIONS}
+		${arg_CUSTOM_VAPIS} PARENT_SCOPE)
+	set (VALA_${id}_DEPENDS ${arg_DEPENDS}
+		PARENT_SCOPE)
+
+	set (VALA_${id}_SOURCES "" PARENT_SCOPE)
+	set (VALA_${id}_OUTPUTS "" PARENT_SCOPE)
+	set (VALA_${id}_FAST_VAPI_FILES "" PARENT_SCOPE)
+	set (VALA_${id}_FAST_VAPI_ARGS "" PARENT_SCOPE)
+endfunction (vala_init)
+
+function (vala_add id file)
+	cmake_parse_arguments (arg "" "" "DEPENDS" ${ARGN})
+
+	if (NOT IS_ABSOLUTE "${file}")
+		set (file "${CMAKE_CURRENT_SOURCE_DIR}/${file}")
+	endif (NOT IS_ABSOLUTE "${file}")
+
+	get_filename_component (output_name "${file}" NAME)
+	get_filename_component (output_base "${file}" NAME_WE)
+	set (output_base "${VALA_${id}_DIR}/${output_base}")
+
+	# XXX: It would be best to have it working without touching the vapi
+	#      but it appears this cannot be done in CMake.
+	add_custom_command (OUTPUT "${output_base}.vapi"
+		COMMAND ${VALA_COMPILER} "${file}" "--fast-vapi=${output_base}.vapi"
+		COMMAND ${CMAKE_COMMAND} -E touch "${output_base}.vapi"
+		DEPENDS "${file}"
+		COMMENT "Generating a fast vapi for ${output_name}" VERBATIM)
+
+	set (vapi_opts)
+	set (vapi_depends)
+	foreach (vapi ${arg_DEPENDS})
+		if (NOT IS_ABSOLUTE "${vapi}")
+			set (vapi "${VALA_${id}_DIR}/${vapi}.vapi")
+		endif (NOT IS_ABSOLUTE "${vapi}")
+
+		list (APPEND vapi_opts "--use-fast-vapi=${vapi}")
+		list (APPEND vapi_depends "${vapi}")
+	endforeach (vapi)
+
+	add_custom_command (OUTPUT "${output_base}.c"
+		COMMAND ${VALA_COMPILER} "${file}" -C ${vapi_opts} ${VALA_${id}_ARGS}
+		COMMAND ${CMAKE_COMMAND} -E touch "${output_base}.c"
+		DEPENDS "${file}" ${vapi_depends} ${VALA_${id}_DEPENDS}
+		WORKING_DIRECTORY "${VALA_${id}_DIR}"
+		COMMENT "Precompiling ${output_name}" VERBATIM)
+
+	set (VALA_${id}_SOURCES ${VALA_${id}_SOURCES}
+		"${file}" PARENT_SCOPE)
+	set (VALA_${id}_OUTPUTS ${VALA_${id}_OUTPUTS}
+		"${output_base}.c" PARENT_SCOPE)
+	set (VALA_${id}_FAST_VAPI_FILES ${VALA_${id}_FAST_VAPI_FILES}
+		"${output_base}.vapi" PARENT_SCOPE)
+	set (VALA_${id}_FAST_VAPI_ARGS ${VALA_${id}_FAST_VAPI_ARGS}
+		"--use-fast-vapi=${output_base}.vapi" PARENT_SCOPE)
+endfunction (vala_add)
+
+function (vala_finish id)
+	set (_one_value SOURCES OUTPUTS
+		GENERATE_VAPI GENERATE_HEADER GENERATE_SYMBOLS)
+	cmake_parse_arguments (arg "" "${_one_value}" "" ${ARGN})
+
+	if (arg_SOURCES)
+		set (${arg_SOURCES} ${VALA_${id}_SOURCES} PARENT_SCOPE)
+	endif (arg_SOURCES)
+
+	if (arg_OUTPUTS)
+		set (${arg_OUTPUTS} ${VALA_${id}_OUTPUTS} PARENT_SCOPE)
+	endif (arg_OUTPUTS)
+
+	set (outputs)
+	set (export_args)
+
+	if (arg_GENERATE_VAPI)
+		if (NOT IS_ABSOLUTE "${arg_GENERATE_VAPI}")
+			set (arg_GENERATE_VAPI
+				"${VALA_${id}_DIR}/${arg_GENERATE_VAPI}")
+		endif (NOT IS_ABSOLUTE "${arg_GENERATE_VAPI}")
+
+		list (APPEND outputs "${arg_GENERATE_VAPI}")
+		list (APPEND export_args "--internal-vapi=${arg_GENERATE_VAPI}")
+
+		if (NOT arg_GENERATE_HEADER)
+			message (FATAL_ERROR "Header generation required for vapi")
+		endif (NOT arg_GENERATE_HEADER)
+	endif (arg_GENERATE_VAPI)
+
+	if (arg_GENERATE_SYMBOLS)
+		if (NOT IS_ABSOLUTE "${arg_GENERATE_SYMBOLS}")
+			set (arg_GENERATE_SYMBOLS
+				"${VALA_${id}_DIR}/${arg_GENERATE_SYMBOLS}")
+		endif (NOT IS_ABSOLUTE "${arg_GENERATE_SYMBOLS}")
+
+		list (APPEND outputs "${arg_GENERATE_SYMBOLS}")
+		list (APPEND export_args "--symbols=${arg_GENERATE_SYMBOLS}")
+
+		if (NOT arg_GENERATE_HEADER)
+			message (FATAL_ERROR "Header generation required for symbols")
+		endif (NOT arg_GENERATE_HEADER)
+	endif (arg_GENERATE_SYMBOLS)
+
+	if (arg_GENERATE_HEADER)
+		if (NOT IS_ABSOLUTE "${arg_GENERATE_HEADER}")
+			set (arg_GENERATE_HEADER
+				"${VALA_${id}_DIR}/${arg_GENERATE_HEADER}")
+		endif (NOT IS_ABSOLUTE "${arg_GENERATE_HEADER}")
+
+		get_filename_component (header_path "${arg_GENERATE_HEADER}" PATH)
+		get_filename_component (header_name "${arg_GENERATE_HEADER}" NAME_WE)
+		set (header_base "${header_path}/${header_name}")
+		get_filename_component (header_ext "${arg_GENERATE_HEADER}" EXT)
+
+		list (APPEND outputs
+			"${header_base}${header_ext}"
+			"${header_base}_internal${header_ext}")
+		list (APPEND export_args
+			"--header=${header_base}${header_ext}"
+			"--internal-header=${header_base}_internal${header_ext}")
+	endif (arg_GENERATE_HEADER)
+
+	if (outputs)
+		add_custom_command (OUTPUT ${outputs}
+			COMMAND ${VALA_COMPILER} -C ${VALA_${id}_ARGS}
+				${export_args} ${VALA_${id}_FAST_VAPI_ARGS}
+			DEPENDS ${VALA_${id}_FAST_VAPI_FILES}
+			COMMENT "Generating vapi/headers/symbols" VERBATIM)
+	endif (outputs)
+endfunction (vala_finish id)
+
+
+function (vapi_gen id)
+	set (_one_value LIBRARY INPUT)
+	set (_multi_value PACKAGES)
+	cmake_parse_arguments (arg "" "${_one_value}" "${_multi_value}" ${ARGN})
+
+	set(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${id}.vapi")
+	if (arg_LIBRARY)
+		set (OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/${arg_LIBRARY}.vapi")
+	endif (arg_LIBRARY)
+	
+	set("${id}_OUTPUT" ${OUTPUT} PARENT_SCOPE)
+	
+	set(PACKAGE_LIST)
+	foreach(PACKAGE ${arg_PACKAGES})
+		list(APPEND PACKAGE_LIST "--pkg" ${PACKAGE})
+	endforeach()
+	
+	add_custom_command(
+		OUTPUT
+			${OUTPUT}
+		COMMAND
+			${VAPI_GEN}
+			${PACKAGE_LIST}
+			--library=${arg_LIBRARY}
+			${arg_INPUT}
+		DEPENDS
+			${arg_INPUT}
+		VERBATIM
+	)
+	
+	add_custom_target(${id} ALL DEPENDS ${OUTPUT})
+endfunction (vapi_gen id)
+