DEV: a more flexible makefile added

test/Makefile

@@ -1,9 +1,7 @@
 #
-# Makefile
-# 
-# Main makefile for utl Unit test
+# Makefile for utl Unit test
 #
-# Copyright (C) 2019 Christos Choutouridis <christos@choutouridis.net>
+# Copyright (C) 2019-2020 Christos Choutouridis <christos@choutouridis.net>
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Lesser General Public License as
@@ -20,50 +18,69 @@
 #
 
 # ========== Project settings ==========
-TARGET   	:= utlTest.exe
-SRC_DIR		:= tests gtest
-INC_DIR		:= ../include gtest
-EXC_FILE	:= 
+# Excecutable's name
+TARGET          := utlTest
+
+# List(space seperated) of source directories
+# ex:
+# SRC_DIR_LIST := src1 /var/src2 ../src3
+SRC_DIR_LIST    := tests gtest
+
+# List(space seperated) of include directories
+# ex:
+# INC_DIR_LIST := inc /var/inc ../include2
+INC_DIR_LIST    := ../include gtest
+
+# List(space seperated) of exclude files (filenames only)
+# ex:
+# EXC_FILE_LIST := bad.cpp old.cpp
+EXC_FILE_LIST   :=
 
 # build directories
-BUILD_DIR  	:= bin
-OBJ_DIR  	:= $(BUILD_DIR)/obj
-DEP_DIR		:= $(BUILD_DIR)/.dep
+BUILD_DIR       := bin
+OBJ_DIR         := $(BUILD_DIR)/obj
+DEP_DIR         := $(BUILD_DIR)/.dep
 
 
 # ========== Compiler settings ==========
-CXX			:= g++
-CPP			:= g++ -E
-CSIZE			:= size
+CLANGXX         := clang++
+CLANGPP         := clang++ -E
+GCCXX           := g++
+GCCPP           := g++ -E
 
-CFLAGS 		:= -std=c++14 -Wall -Wextra
-DEB_FLAGS	:= -DDEBUG -g3
-REL_FLAGS	:= -O3
-LDFLAGS  	:=
+CXX             := $(GCCXX)
+CPP             := $(GCCPP)
+CSIZE           := size
 
-PRE_DEFS		:= 
-
-MAP_FILE		:= $(BUILD_DIR)/output.map
-MAP_FLAG		:= -Xlinker -Map=$(MAP_FILE)
+CFLAGS          := -Wall -Wextra
+DEB_FLAGS       := -DDEBUG -g3
+REL_FLAGS       := -O2
+# example: LDFLAGS := -pthread -lm
+LDFLAGS         := -pthread
+# example: MYCAB=1729 SUPER_MODE
+PRE_DEFS        :=
 
+MAP_FILE        := $(BUILD_DIR)/output.map
+MAP_FLAG        := -Xlinker -Map=$(MAP_FILE)
 
 
 #
 # =========== Main body and Patterns ===========
 #
-INC  			:= $(foreach dir,$(INC_DIR),-I$(dir))
-DEF  			:= $(foreach def,$(PRE_DEFS),-D$(def))
-
-# source files
+INC     := $(foreach dir,$(INC_DIR_LIST),-I$(dir))
+DEF     := $(foreach def,$(PRE_DEFS),-D$(def))
+EXC     := $(foreach fil,$(EXC_FILE_LIST),                              \
+               $(foreach dir,$(SRC_DIR_LIST),$(wildcard $(dir)/$(fil))) \
+           )
+# source files. object and dependencies list
 # recursive search into current and source directories
-SRC			:= $(wildcard *.cpp)
-SRC			+= $(foreach dir,$(SRC_DIR),$(wildcard $(dir)/*.cpp))
-SRC			+= $(foreach dir,$(SRC_DIR),$(wildcard $(dir)/**/*.cpp))
-# exclude every file from the exclude file list
-SRC			:= $(filter-out $(wildcard $(EXC_FILE)),$(SRC))
+SRC     := $(wildcard *.cpp)
+SRC     += $(foreach dir,$(SRC_DIR_LIST),$(wildcard $(dir)/*.cpp))
+SRC     += $(foreach dir,$(SRC_DIR_LIST),$(wildcard $(dir)/**/*.cpp))
+SRC     := $(abspath $(filter-out $(EXC),$(SRC)))
 
-OBJ 			:= $(foreach file,$(SRC:%.cpp=%.o),$(OBJ_DIR)/$(file))
-DEP			:= $(foreach file,$(SRC:%.cpp=%.d),$(DEP_DIR)/$(file))
+OBJ     := $(foreach file,$(SRC:%.cpp=%.o),$(OBJ_DIR)$(file))
+DEP     := $(foreach file,$(SRC:%.cpp=%.d),$(DEP_DIR)$(file))
 
 
 # Make Dependencies pattern.
@@ -73,13 +90,12 @@ DEP			:= $(foreach file,$(SRC:%.cpp=%.d),$(DEP_DIR)/$(file))
 # It is based on Tom Tromey's method.
 # 
 # Invoke cpp to create makefile rules with dependencies for each source file
-$(DEP_DIR)/%.d: %.cpp
+$(DEP_DIR)%.d: %.cpp
 	@mkdir -p $(@D)
-	@$(CPP) $(CFLAGS) $(INC) $(DEF) -MM -MT $(OBJ_DIR)/$(<:.cpp=.o) -MF $@ $<
-
+	@$(CPP) $(CFLAGS) $(INC) $(DEF) -MM -MT $(OBJ_DIR)$(<:.cpp=.o) -MF $@ $<
 
 # objects depent on .cpp AND dependency files, which have an empty recipe 
-$(OBJ_DIR)/%.o: %.cpp $(DEP_DIR)/%.d
+$(OBJ_DIR)%.o: %.cpp $(DEP_DIR)%.d
 	@mkdir -p $(@D)
 	$(CXX) -c $(CFLAGS) $(INC) $(DEF) -o $@ $<
 
@@ -101,7 +117,6 @@ $(BUILD_DIR)/$(TARGET): $(OBJ)
 	@$(CSIZE) $(@D)/$(TARGET)
 	@echo Done
 
-
 .PHONY: clean
 clean:
 	@echo Cleaning build directories
@@ -110,21 +125,63 @@ clean:
 	@rm -rf $(BUILD_DIR)
 
 
-
 #
 # ============ User Rules =============
 #
 
+.PHONY: gcc14
+gcc14:	CFLAGS += $(DEB_FLAGS)
+gcc14:	CFLAGS += -std=c++14
+gcc14:  $(BUILD_DIR)/$(TARGET)
+
+.PHONY: gcc14_conc
+gcc14_conc:	CFLAGS += $(DEB_FLAGS)
+gcc14_conc:	CFLAGS += -std=c++14 -fconcepts
+gcc14_conc: $(BUILD_DIR)/$(TARGET)
+
+.PHONY: gcc17
+gcc17:	CFLAGS += $(DEB_FLAGS)
+gcc17:	CFLAGS += -std=c++17
+gcc17:  $(BUILD_DIR)/$(TARGET)
+
+.PHONY: gcc17_conc
+gcc17_conc:	CFLAGS += $(DEB_FLAGS)
+gcc17_conc:	CFLAGS += -std=c++17 -fconcepts
+gcc17_conc: $(BUILD_DIR)/$(TARGET)
+
+.PHONY: gcc2a
+gcc2a:	CFLAGS += $(DEB_FLAGS)
+gcc2a:	CFLAGS += -std=c++2a
+gcc2a:  $(BUILD_DIR)/$(TARGET)
+
+.PHONY: clang14
+clang14: CXX := $(CLANGXX)
+clang14: CPP := $(CLANGPP)
+clang14: CFLAGS += $(DEB_FLAGS)
+clang14: CFLAGS += -std=c++14
+clang14: $(BUILD_DIR)/$(TARGET)
+
+.PHONY: clang17
+clang14: CXX := $(CLANGXX)
+clang14: CPP := $(CLANGPP)
+clang14: CFLAGS += $(DEB_FLAGS)
+clang14: CFLAGS += -std=c++17
+clang14: $(BUILD_DIR)/$(TARGET)
+
+.PHONY: clang2a
+clang14: CXX := $(CLANGXX)
+clang14: CPP := $(CLANGPP)
+clang14: CFLAGS += $(DEB_FLAGS)
+clang14: CFLAGS += -std=c++2a
+clang14: $(BUILD_DIR)/$(TARGET)
+
 .PHONY: debug
 debug: CFLAGS += $(DEB_FLAGS)
 debug: $(BUILD_DIR)/$(TARGET)
 
-
 .PHONY: release
 release: CFLAGS += $(REL_FLAGS)
 release: clean $(BUILD_DIR)/$(TARGET)
 
-
 .PHONY: all
 all: clean release
-