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CC ?= gcc
CC ?= g++
SRCDIR ?= src
INCDIR ?= inc
OBJDIR ?= obj
TSTDIR ?= test
EXMDIR ?= examples
PKGS = sdl2 opengl
LIBS = -lm $(shell pkg-config --libs $(PKGS))
INCS = -Ithirdparty/cglm/include -Ithirdparty/ -Iinc/
CFLAGS ?= -D_FORTIFY_SOURCE=2 -Wall -Werror -Wno-error=unused-variable -g -Og
CFLAGS += -std=gnu23 -fms-extensions -flto $(shell pkg-config --cflags $(PKGS)) -DCIMGUI_USE_OPENGL3 -DCIMGUI_USE_SDL2
CXXFLAGS += -flto $(shell pkg-config --cflags $(PKGS)) -DCIMGUI_USE_OPENGL3 -DCIMGUI_USE_SDL2 -DIMGUI_IMPL_API='extern "C"'
APP_MAIN_SOURCES = $(SRCDIR)/main.c
APP_MAIN_OBJS = $(APP_MAIN_SOURCES:%.c=$(OBJDIR)/%.o)
APP_MAIN_DEPS = $(APP_MAIN_OBJS:%.o=%.d)
APP_SOURCES = $(filter-out $(APP_MAIN_SOURCES),$(shell find $(SRCDIR) -name "*.c"))
APP_OBJS = $(APP_SOURCES:%.c=$(OBJDIR)/%.o)
APP_DEPS = $(APP_OBJS:%.o=%.d)
TST_SOURCES = $(shell find $(TSTDIR) -name "*.c")
TST_OBJS = $(TST_SOURCES:%.c=$(OBJDIR)/%.o)
TST_DEPS = $(TST_OBJS:%.o=%.d)
TST_APPS = $(TST_SOURCES:%.c=$(OBJDIR)/%)
EXM_SOURCES = $(shell find $(EXMDIR) -name "*.c")
EXM_OBJS = $(EXM_SOURCES:%.c=$(OBJDIR)/%.o)
EXM_DEPS = $(EXM_OBJS:%.o=%.d)
EXM_APPS = $(EXM_SOURCES:%.c=$(OBJDIR)/%)
IMGUI_OBJS = $(OBJDIR)/thirdparty/cimgui/imgui/backends/imgui_impl_sdl2.o $(OBJDIR)/thirdparty/cimgui/imgui/backends/imgui_impl_opengl3.o
-include $(APP_DEPS) $(APP_MAIN_DEPS) $(TST_DEPS) $(EXM_DEPS)
# We don't really need to run the tests for bear to record them
compile_commands.json: clean Makefile $(APP_SOURCES)
@rm -f "$@"
bear -- make main
.PHONY: thirdparty/cimgui/cimgui.so
thirdparty/cimgui/cimgui.so:
make -C thirdparty/cimgui
LIBS += -Lthirdparty/cimgui -Wl,-rpath,'$$ORIGIN/thirdparty/cimgui' -lcimgui -lstdc++
main: $(APP_MAIN_OBJS) $(APP_OBJS) thirdparty/cimgui/cimgui.so $(IMGUI_OBJS)
$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $(APP_MAIN_OBJS) $(APP_OBJS) $(IMGUI_OBJS) $(LIBS)
$(OBJDIR)/%.o: %.c
@mkdir -p $(dir $@)
$(CC) $(CFLAGS) $(INCS) -MMD -o $@ -c $<
$(OBJDIR)/test/%: $(OBJDIR)/test/%.o $(APP_OBJS)
@mkdir -p $(dir $@)
$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $< $(APP_OBJS) $(LIBS)
$(OBJDIR)/examples/%: $(OBJDIR)/examples/%.o $(APP_OBJS)
@mkdir -p $(dir $@)
$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $< $(APP_OBJS) $(LIBS)
clean:
@rm -rf $(OBJDIR)
@rm -f main
@make -C thirdparty/cimgui clean
test: $(TST_APPS)
@echo "Running tests"
@for t in $(TST_APPS); do echo "$$t"; $$t; done
examples: $(EXM_APPS)
.DEFAULT_GOAL := all
all: main test examples
# Imgui specific compile rules
$(OBJDIR)/%.o: %.cpp
@mkdir -p $(dir $@)
$(CXX) $(CXXFLAGS) $(INCS) -Ithirdparty/cimgui/imgui/ -MMD -o $@ -c $<
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