SRCDIR = src
LIBSRCS := $(shell find $(SRCDIR)/toolbox -name "*.c")
SRCS := $(shell find $(SRCDIR) -name "*.c")

OBJDIR = .build
LIBOBJS := $(patsubst %.c,%.o,$(subst $(SRCDIR),$(OBJDIR),$(LIBSRCS)))
OBJS := $(patsubst %.c,%.o,$(subst $(SRCDIR),$(OBJDIR),$(SRCS)))

DYNOBJDIR = .dynbuild
DYNLIBOBJS := $(patsubst %.c,%.o,$(subst $(SRCDIR),$(DYNOBJDIR),$(LIBSRCS)))

INCS = -I include/
LIBS = -lc

CFLAGS += -m64 $(INCS) -pedantic -Wall -Wextra -Wshadow \
		  -Wcast-align -Wunused -Wconversion -Wmisleading-indentation\
		  -Wduplicated-cond -Wduplicated-branches -Wlogical-op\
		  -Wdouble-promotion -Wformat=2 -Wbad-function-cast \
		  -Wmissing-declarations -Wmissing-parameter-type \
		  -Wmissing-prototypes -Wnested-externs

LDFLAGS  += ${LIBS}

CC += -std=c99

ifeq ($(DEBUG), 0)
   CFLAGS  += -O3
else
   CFLAGS  += -g -DDEBUG
   LDFLAGS += -g
endif

.PHONY: clean install uninstall reinstall all options run test \
		lib static_lib dynamic_lib

BINDIR = bin
TARGET = ToolBox
BINARY = $(BINDIR)/$(TARGET)

DYNLIB = lib$(shell echo $(TARGET) | tr '[:upper:]' '[:lower:]').so
STALIB = lib$(shell echo $(TARGET) | tr '[:upper:]' '[:lower:]').ar
PKGCONFILE = $(shell echo $(TARGET) | tr '[:upper:]' '[:lower:]').pc
HEADERS = include/toolbox

all: lib $(BINARY)

lib: static_lib dynamic_lib

static_lib: $(STALIB)

dynamic_lib: $(DYNLIB)

options:
	@echo $(TARGET) build options:
	@echo -e "CC      = $(CC)"
	@echo -e "CFLAGS  = $(CFLAGS)"
	@echo -e "LDFLAGS = $(LDFLAGS)"
	@echo

run: $(BINARY)
	@./$(BINARY)

test:
ifneq ("$(wildcard compile_commands.json)","")
	@cppcheck --enable=all --suppress=missingInclude \
		--project=compile_commands.json $(INCS) .
else
	@cppcheck --enable=all --suppress=missingInclude $(INCS) .
endif

bear:
	@make clean; bear -- make

$(OBJS): $(SRCS) | $(OBJDIR)
	@echo [CC] $@ $(patsubst %.o, %.c, $(subst $(OBJDIR), $(SRCDIR), $@))
	@$(CC) -c $(CFLAGS) -o $@ $(patsubst %.o, %.c, $(subst $(OBJDIR), $(SRCDIR), $@))

$(BINARY): $(OBJS) | $(BINDIR)
	@echo [LD] $@ $^
	@$(CC) $(LDFLAGS) -o $@ $^

$(DYNLIBOBJS): $(LIBSRCS) | $(DYNOBJDIR)
	@echo [CC] -fPIC $@ $(patsubst %.o, %.c, $(subst $(DYNOBJDIR), $(SRCDIR), $@))
	@$(CC) -fPIC -c $(CFLAGS) -o $@ $(patsubst %.o, %.c, $(subst $(DYNOBJDIR), $(SRCDIR), $@))

$(DYNLIB): $(DYNLIBOBJS)
	@echo [LD] $@ $^
	@$(CC) -shared $(LDFLAGS) -o $@ $^

$(STALIB): $(LIBOBJS)
	@echo [AR] $@ $^
	@ar rs $@ $^

clean:
	@rm -rf $(OBJDIR) $(BINDIR) $(DYNOBJDIR) $(DYNLIB) $(STALIB)

$(BINDIR):
	@mkdir -p $@

$(DYNOBJDIR) $(OBJDIR):
	@mkdir -p $@
	@mkdir -p $@/toolbox
	@mkdir -p $@/toolbox/list

reinstall: uninstall install

install: $(DYNLIB) $(STALIB)
	@echo installing dynamic library to /usr/lib
	@install -Dm755 $(DYNLIB) /usr/lib/$(DYNLIB)
	@echo installing static library to /usr/lib
	@install -Dm644 $(STALIB) /usr/lib/$(STALIB)
	@echo installing pkgconf file to /usr/lib/pkgconfig
	@install -Dm755 $(PKGCONFILE) /usr/lib/pkgconfig/$(PKGCONFILE)
	@echo installing headers to /usr/include
	@cp -rf $(HEADERS) /usr/$(HEADERS)
	@chmod 755 /usr/$(HEADERS)
	@find /usr/$(HEADERS) -type f -exec chmod 644 '{}' \;
	@find /usr/$(HEADERS) -type d -exec chmod 755 '{}' \;

uninstall:
	@echo removing dynamic library from /usr/lib
	@rm -rf /usr/lib/$(DYNLIB)
	@echo removing static library from /usr/lib
	@rm -rf /usr/lib/$(STALIB)
	@echo removing pkgconf file from /usr/lib/pkgconfig
	@rm -rf /usr/lib/pkgconfig/$(PKGCONFILE)
	@echo removing headers from /usr/include
	@rm -rf /usr/$(HEADERS)