add examples meta PCH target, speed up compilation of examples with PCH including CommonAPI and Nabla's PCH header, update examples_tests submodule

Author: AnastaZIuk

cmake/common.cmake

@@ -21,14 +21,13 @@ function(update_git_submodule _PATH)
 	)
 endfunction()
 
-
 # TODO: REDO THIS WHOLE THING AS FUNCTIONS
 # https://github.com/buildaworldnet/IrrlichtBAW/issues/311 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
 
 # Macro creating project for an executable
 # Project and target get its name from directory when this macro gets executed (truncating number in the beginning of the name and making all lower case)
 # Created because of common cmake code for examples and tools
-macro(nbl_create_executable_project _EXTRA_SOURCES _EXTRA_OPTIONS _EXTRA_INCLUDES _EXTRA_LIBS)
+macro(nbl_create_executable_project _EXTRA_SOURCES _EXTRA_OPTIONS _EXTRA_INCLUDES _EXTRA_LIBS _PCH_TARGET)
 	get_filename_component(EXECUTABLE_NAME ${CMAKE_CURRENT_SOURCE_DIR} NAME)
 	string(REGEX REPLACE "^[0-9]+\." "" EXECUTABLE_NAME ${EXECUTABLE_NAME})
 	string(TOLOWER ${EXECUTABLE_NAME} EXECUTABLE_NAME)
@@ -65,10 +64,21 @@ macro(nbl_create_executable_project _EXTRA_SOURCES _EXTRA_OPTIONS _EXTRA_INCLUDE
 
 	# EXTRA_SOURCES is var containing non-common names of sources (if any such sources, then EXTRA_SOURCES must be set before including this cmake code)
 	add_dependencies(${EXECUTABLE_NAME} Nabla)
-	target_precompile_headers(${EXECUTABLE_NAME} REUSE_FROM Nabla)
+	
+	if(NOT "${_PCH_TARGET}" STREQUAL "")
+		if(NOT "${_PCH_TARGET}" STREQUAL Nabla)
+			add_dependencies("${EXECUTABLE_NAME}" "${_PCH_TARGET}")
+		endif()
+		
+		target_precompile_headers("${EXECUTABLE_NAME}" REUSE_FROM "${_PCH_TARGET}")
+	else()
+		set_target_properties("${EXECUTABLE_NAME}" PROPERTIES DISABLE_PRECOMPILE_HEADERS ON)
+	endif()
+	
 	get_target_property(NBL_EGL_INCLUDE_DIRECORIES egl INCLUDE_DIRECTORIES)
 
 	target_include_directories(${EXECUTABLE_NAME}
+		PUBLIC "${NBL_ROOT_PATH}/examples_tests/common"
 		PUBLIC ../../include
 		PRIVATE ${_EXTRA_INCLUDES}
 		PRIVATE ${NBL_EGL_INCLUDE_DIRECORIES}

examples_tests

@@ -4,4 +4,4 @@ if(NOT RES)
 	message(FATAL_ERROR "common.cmake not found. Should be in {repo_root}/cmake directory")
 endif()
 
-nbl_create_executable_project("" "" "" "")
+nbl_create_executable_project("" "" "" "" "")