Added BGFX_CUSTOM_TARGETS and BGFX_AMALGAMATED

Custom targets can be annoying if you have a tools or examples target.
Amalgamated builds are now defaulted to off to ensure useful debugging
info.

CMakeLists.txt

@@ -22,8 +22,10 @@ endif()
 option( BGFX_BUILD_TOOLS    "Build bgfx tools."                             ON  )
 option( BGFX_BUILD_EXAMPLES "Build bgfx examples."                          ON  )
 option( BGFX_INSTALL        "Create installation target."                   ON  )
+option( BGFX_CUSTOM_TARGETS "Include convenience custom targets."           ON  )
 option( BGFX_USE_OVR        "Build with OVR support."                       OFF )
-option( BX_AMALGAMATED      "Amalgamate bx source files for faster compilation" ON )
+option( BGFX_AMALGAMATED    "Amalgamated bgfx build for faster compilation" OFF )
+option( BX_AMALGAMATED      "Amalgamated bx build for faster compilation"   OFF )
 
 if( NOT BX_DIR )
 	set( BX_DIR "${CMAKE_CURRENT_SOURCE_DIR}/bx" CACHE STRING "Location of bx." )

cmake/bgfx.cmake

@@ -16,6 +16,15 @@ endif()
 
 # Grab the bgfx source files
 file( GLOB BGFX_SOURCES ${BGFX_DIR}/src/*.cpp ${BGFX_DIR}/src/*.mm ${BGFX_DIR}/src/*.h ${BGFX_DIR}/include/bgfx/*.h ${BGFX_DIR}/include/bgfx/c99/*.h )
+if(BGFX_AMALGAMATED)
+	set(BGFX_NOBUILD ${BGFX_SOURCES})
+	list(REMOVE_ITEM BGFX_NOBUILD ${BGFX_DIR}/src/amalgamated.cpp)
+	foreach(BGFX_SRC ${BGFX_NOBUILD})
+		set_source_files_properties( ${BGFX_SRC} PROPERTIES HEADER_FILE_ONLY ON )
+	endforeach()
+else()
+	set_source_files_properties( ${BGFX_DIR}/src/amalgamated.cpp PROPERTIES HEADER_FILE_ONLY ON )
+endif()
 
 # Create the bgfx target
 add_library( bgfx STATIC ${BGFX_SOURCES} )
@@ -56,7 +65,6 @@ if( UNIX AND NOT APPLE )
 endif()
 
 # Excluded files from compilation
-set_source_files_properties( ${BGFX_DIR}/src/amalgamated.cpp PROPERTIES HEADER_FILE_ONLY ON )
 set_source_files_properties( ${BGFX_DIR}/src/amalgamated.mm PROPERTIES HEADER_FILE_ONLY ON )
 set_source_files_properties( ${BGFX_DIR}/src/glcontext_ppapi.cpp PROPERTIES HEADER_FILE_ONLY ON )
 set_source_files_properties( ${BGFX_DIR}/src/glcontext_egl.cpp PROPERTIES HEADER_FILE_ONLY ON )

cmake/examples.cmake

@@ -117,8 +117,10 @@ function( add_example ARG_NAME )
 		if( MSVC )
 			set_target_properties( example-${ARG_NAME} PROPERTIES LINK_FLAGS "/ENTRY:\"mainCRTStartup\"" )
 		endif()
+		if( BGFX_CUSTOM_TARGETS )
 			add_dependencies( examples example-${ARG_NAME} )
 		endif()
+	endif()
 
 	# Configure shaders
 	if( NOT ARG_COMMON )
@@ -133,7 +135,9 @@ function( add_example ARG_NAME )
 endfunction()
 
 # Build all examples target
+if( BGFX_CUSTOM_TARGETS )
 	add_custom_target( examples )
+endif()
 
 # Add common library for examples
 add_example(

cmake/tools.cmake

@@ -8,7 +8,9 @@
 # You should have received a copy of the CC0 Public Domain Dedication along with
 # this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
 
+if( BGFX_CUSTOM_TARGETS )
 	add_custom_target( tools )
+endif()
 
 include( cmake/tools/geometryc.cmake )
 include( cmake/tools/shaderc.cmake )

cmake/tools/geometryc.cmake

@@ -17,4 +17,6 @@ add_executable( geometryc ${BGFX_DIR}/tools/geometryc/geometryc.cpp )
 target_compile_definitions( geometryc PRIVATE "-D_CRT_SECURE_NO_WARNINGS" )
 set_target_properties( geometryc PROPERTIES FOLDER "bgfx/tools" )
 target_link_libraries( geometryc bx bgfx-bounds bgfx-vertexdecl forsyth-too ib-compress )
+if( BGFX_CUSTOM_TARGETS )
 	add_dependencies( tools geometryc )
+endif()

cmake/tools/shaderc.cmake

@@ -18,7 +18,9 @@ add_executable( shaderc ${BGFX_DIR}/tools/shaderc/shaderc.cpp ${BGFX_DIR}/tools/
 target_compile_definitions( shaderc PRIVATE "-D_CRT_SECURE_NO_WARNINGS" )
 set_target_properties( shaderc PROPERTIES FOLDER "bgfx/tools" )
 target_link_libraries( shaderc bx bgfx-vertexdecl bgfx-shader-spirv fcpp glsl-optimizer glslang )
+if( BGFX_CUSTOM_TARGETS )
 	add_dependencies( tools shaderc )
+endif()
 
 function( add_shader ARG_FILE )
 	# Parse arguments