CGLAGS=$(shell pkg-config --cflags --libs xmlsec1-nss)

all: helloworld

%.c: %.vala
	valac -C $^

%.o: %.c
	gcc -c -o $^ $@ 

helloworld: %.o
	gcc -o $@ $^ $(CFLAGS)

clean:
	rm *.c *.o helloworld

...

%.vala:
    valac -C $^

%.o: %.vala:
    gcc -c -o $^ $@

...

MODE :=debug
LANGUAGE :=c

SOURCE_TOP_DIR  :=.
# source
SOURCE_SUB_DIRS :=
#shared math gfx



BUILD_TOP_DIR :=bin/$(MODE)

SOURCE_EXT :=c
ifeq ($(LANGUAGE),cpp)
SOURCE_EXT :=cpp
endif

OBJECT_EXT :=o

COMPILER   :=$(CC)
ifeq ($(LANGUAGE),cpp)
COMPILER :=$(CXX)
endif

LINKER	   :=$(COMPILER)

COMPILER_FLAGS :=-pipe
ifeq ($(LANGUAGE),c)
COMPILER_FLAGS += $(CFLAGS) -std=c11
endif
ifeq ($(LANGUAGE),cpp)
COMPILER_FLAGS += $(CXXFLAGS) -std=c++11 -pthread #`sdl-config --cflags`
endif

LINKER_FLAGS   :=-s -pipe -L`gcc -print-file-name=`
ifeq ($(LANGUAGE),cpp)
LINKER_FLAGS += -std=c++14 -pthread
endif
LIBS           :=
#-lgcc -lc -lm -lpthread #-lGL -lGLU -lGLEW `sdl-config --libs`

ifeq ($(MODE),debug)
COMPILER_FLAGS += -Wall -ggdb
else
COMPILER_FLAGS += -O2
endif


SOURCE_DIRS  :=$(addprefix $(SOURCE_TOP_DIR)/, $(SOURCE_SUBDIRS)) $(SOURCE_TOP_DIR)
BUILD_DIRS   :=$(patsubst $(SOURCE_TOP_DIR)%, $(BUILD_TOP_DIR)%, $(SOURCE_DIRS))
SOURCE_FILES :=$(wildcard $(addsuffix /*.$(SOURCE_EXT), $(SOURCE_DIRS)))
OBJECT_FILES :=$(patsubst $(SOURCE_TOP_DIR)%.$(SOURCE_EXT), $(BUILD_TOP_DIR)%.$(OBJECT_EXT), $(SOURCE_FILES))


# example of define, info and eval
# define SOURCE_AND_OBJECT_FILES
# 	SOURCE_FILES := $$(wildcard $$(addsuffix /*.$(SOURCE_EXT), $$(SOURCE_DIRS)))
# 	OBJECT_FILES := $$(patsubst $$(SOURCE_TOP_DIR)%.$(SOURCE_EXT), $$(BUILD_TOP_DIR)%.$(OBJECT_EXT), $$(SOURCE_FILES))
# endef
# $(info $(call SOURCE_AND_OBJECT_FILES))
# $(eval $(call SOURCE_AND_OBJECT_FILES))



$(info [START: $(shell date -R)])

all: main
	@echo "[FINISH: `date -R`]"

main: $(OBJECT_FILES)
	$(info [$(LINKER)] $^ => $@)
	$(LINKER) $^ -o $(BUILD_TOP_DIR)/$@ $(LINKER_FLAGS) $(LIBS)

$(OBJECT_FILES): | $(BUILD_DIRS)
$(BUILD_DIRS):
	@echo "[mkdir] $@"
	@mkdir -p $@

$(BUILD_TOP_DIR)/%.$(OBJECT_EXT): $(SOURCE_TOP_DIR)/%.$(SOURCE_EXT)
	@echo "[$(COMPILER)] $< -> $@"
	$(COMPILER) -c $< -o $@ $(COMPILER_FLAGS)



.PHONY: mkdirs clean showvars rebuild


mkdirs:
	@echo [mkdir] -p $(BUILD_DIRS)
	@mkdir -p $(BUILD_DIRS)

clean:
	@echo cleaning...
	@echo [rm] $(OBJECT_FILES)
	@rm $(OBJECT_FILES)
	@echo [rm] $(BUILD_TOP_DIR)/main
	@rm $(BUILD_TOP_DIR)/main

showvars:
	@echo SOURCE_DIRS : $(SOURCE_DIRS)
	@echo SOURCE_FILES: $(SOURCE_FILES)
	@echo OBJECT_FILES: $(OBJECT_FILES)

rebuild: clean all

CFLAGS=$(shell pkg-config --cflags --libs glib-2.0 gobject-2.0)

all: helloworld

%.c: %.vala
	valac -C $^

%.o: %.c
	gcc -c -o $@ $^ $(CFLAGS)

helloworld: world.o hello.o
	gcc -o $@ $^ $(CFLAGS)

clean:
	rm -fv *.c *.o helloworld

valac -C world.vala
world.vala:2.5-2.22: warning: method `World.text' never used
    public string text() {
    ^^^^^^^^^^^^^^^^^^
Compilation succeeded - 1 warning(s)
gcc -c -o world.o world.c -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -lgobject-2.0 -lglib-2.0 
valac -C hello.vala
hello.vala:2.17-2.21: error: The name `World' does not exist in the context of `main'
    var w = new World();
                ^^^^^
hello.vala:2.9-2.23: error: var declaration not allowed with non-typed initializer
    var w = new World();
        ^^^^^^^^^^^^^^^
hello.vala:4.19-4.19: error: The name `w' does not exist in the context of `main'
    stdout.printf(w.text() + "\n");
                  ^
Compilation failed: 3 error(s), 0 warning(s)
Makefile:6: ошибка выполнения рецепта для цели «hello.c»
make: *** [hello.c] Ошибка 1

CC=gcc
CFLAGS= `pkg-config --cflags --libs glib-2.0 gobject-2.0`
VC=valac
VCFLAGS= -C

SOURCE_VALA= hello.vala world.vala 
OUTPUT_VALA= hello.c world.c
OBJ= hello.o world.o
EXECUTABLE= helloworld


all:$(EXECUTABLE)

$(OUTPUT_VALA):$(SOURCE_VALA)
	$(VC) $(VCFLAGS) $(SOURCE_VALA)


$(OBJ):$(OUTPUT_VALA)
	$(CC)  $(OUTPUT_VALA) $(CFLAGS)


$(EXECUTABLE):$(OBJ)
	$(CC) -o $(EXECUTABLE) $(OBJ) $(CFLAGS)

clear:
	rm $(OUTPUT_VALA) $(EXECUTABLE) $(OBJ)

BIN = bin
DIRS = .

CGLAGS=$(shell pkg-config --cflags --libs xmlsec1-nss)

VSOURCE := $(foreach DIR,$(DIRS),$(wildcard $(DIR)/*.vala))
CSOURCE := $(addprefix $(BIN)/, $(VSOURCE:.vala=.c))
OBJS    := $(addprefix $(BIN)/, $(VSOURCE:.vala=.o))

target=helloworld


all:		$(target)

$(target):	$(OBJS)
		ld $(target) $(ldflags) $(OBJS)

$(CSOURCE): $(VSOURCE)
		valac $(VSOURCE)

$(BIN)/%.o: %.c
		cc -c $(ccflags) $< -o $@

dron@gnu:~$ cat Makefile 
CC=gcc
CFLAGS= `pkg-config --cflags --libs glib-2.0 gobject-2.0`
VC=valac
VCFLAGS= -C

SOURCE_VALA= hello.vala world.vala 
OUTPUT_VALA= hello.c world.c
OBJ= hello.o world.o
EXECUTABLE= helloworld


all:$(EXECUTABLE)

$(OUTPUT_VALA):$(SOURCE_VALA)
	$(VC) $(VCFLAGS) $(SOURCE_VALA)


$(OBJ):$(OUTPUT_VALA)
	$(CC)  $(OUTPUT_VALA) 


$(EXECUTABLE):$(OBJ)
	$(CC) -o $(EXECUTABLE) $(OBJ) $(CFLAGS)

clear:
	rm $(OUTPUT_VALA) $(EXECUTABLE) $(OBJ)
dron@gnu:~$ 

CC = gcc
CFLAGS = $(shell pkg-config --cflags --libs glib-2.0 gobject-2.0)
VC = valac
VCFLAGS = -C

SOURCE_VALA = hello.vala world.vala 
OUTPUT_VALA = $(SOURCE_VALA:.vala=.c)
OBJ = $(SOURCE_VALA:.vala=.o)
EXECUTABLE = helloworld


all: $(EXECUTABLE)

$(OUTPUT_VALA): $(SOURCE_VALA)
	$(VC) $(VCFLAGS) $(SOURCE_VALA)


$(OBJ): $(OUTPUT_VALA)
	$(CC) -c $(OUTPUT_VALA) $(CFLAGS)

$(EXECUTABLE): $(OBJ)
	$(CC) -o $(EXECUTABLE) $(OBJ) $(CFLAGS)

clean:
	rm $(OUTPUT_VALA) $(EXECUTABLE) $(OBJ)

$ make -n
valac -C hello.vala world.vala 
valac -C hello.vala world.vala 
gcc -c hello.c world.c -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -lgobject-2.0 -lglib-2.0 
gcc -c hello.c world.c -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -lgobject-2.0 -lglib-2.0 
gcc -o helloworld hello.o world.o -I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include -lgobject-2.0 -lglib-2.0