# gnu makefile

# when included in src/*/Makefile then it builds a binary locally

# when included in ./Makefile then all tests are linked into one binary

ROOTDIR ?= ../..

ifeq ($(ROOTDIR), .)

SRCS = $(sort $(wildcard src/*/*.c))

else

SRCS = $(sort $(wildcard *.c))

endif

OBJS = $(SRCS:.c=.o)

usemusl = yes

prefix = /usr/local/musl

includedir = $(prefix)/include

libdir = $(prefix)/lib

-include $(ROOTDIR)/Makefile.conf

AR=ar

RANLIB=ranlib

CFLAGS += -g -std=c99 -pipe -Wall

LDFLAGS += -g

INC += -I$(ROOTDIR)/common

ifeq ($(usemusl), yes)

CC=gcc

LIBCC=$(shell gcc -print-file-name=libgcc.a |sed 's,/libgcc.a,,')

#LIBCC=$(shell pcc -v /dev/null 2>&1 |sed -n 's,/crtbegin.o.*,,;s,.* /,/,p')

CFLAGS  += -nostdinc -ffreestanding -fno-stack-protector

LDFLAGS += -nostdlib -Wl,-e,_start,-Bstatic $(libdir)/crti.o $(libdir)/crt1.o $(libdir)/crtn.o -L $(libdir) -lc -L $(LIBCC) -l$(CC)

INC     += -isystem $(includedir)

endif

all: t b

clean:

	rm -f $(OBJS) t main.o main.h b bench.o tests.a

.c.o:

	$(CC) $(CFLAGS) $(INC) -c -o $@ $<

$(OBJS): $(ROOTDIR)/common/test.h

main.h: $(OBJS)

	nm -f posix $+ |awk ' \

		/^test/ && $$2=="T"{print "T(" $$1 ")"} \

		/^bench/ && $$2=="T"{print "B(" $$1 ")"} \

	' >main.h

tests.a: $(OBJS)

	$(AR) rc $@ $+

	$(RANLIB) $@

main.o: $(ROOTDIR)/common/main.c $(ROOTDIR)/common/test.h main.h

	$(CC) $(CFLAGS) $(INC) -I. -c -o $@ $<

t: main.o tests.a

	$(CC) $+ $(LDFLAGS) -o $@

bench.o: $(ROOTDIR)/common/bench.c $(ROOTDIR)/common/test.h main.h

	$(CC) $(CFLAGS) $(INC) -I. -c -o $@ $<

b: bench.o tests.a

	$(CC) $+ $(LDFLAGS) -lrt -o $@

.PHONY: all clean