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vix

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NIF based bindings for libvips

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vix c_src Makefile
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c_src/Makefile 

MIX_APP_PATH ?= ..



PREFIX = $(MIX_APP_PATH)/priv

VIX = $(PREFIX)/vix.so



VIX_COMPILATION_MODE ?= PRECOMPILED_NIF_AND_LIBVIPS

VIX_COMPILATION_MODE := $(shell echo "$(VIX_COMPILATION_MODE)" | tr '[:lower:]' '[:upper:]')



# System type and C compiler/flags.



UNAME_SYS := $(shell uname -s)



ifeq ($(UNAME_SYS), Darwin)

	CFLAGS += -O2 -Wall -Werror -Wextra -Wno-unused-parameter -Wmissing-prototypes -std=c11

	LDFLAGS += -flat_namespace -undefined suppress

else ifeq ($(UNAME_SYS), Linux)

	CFLAGS += -O2 -Wall -Werror -Wextra -Wno-unused-parameter -Wmissing-prototypes -std=c11

endif



CFLAGS   += -D_POSIX_C_SOURCE=200809L -fPIC -I $(ERTS_INCLUDE_DIR) -I $(ERL_INTERFACE_INCLUDE_DIR)

LDLIBS   += -L $(ERL_INTERFACE_LIB_DIR)

LDFLAGS  += -shared



ifeq ($(VIX_COMPILATION_MODE), PLATFORM_PROVIDED_LIBVIPS)

	CFLAGS += `pkg-config vips --cflags`

	LDLIBS += `pkg-config vips --libs`

else

	PRECOMPILED_LIBVIPS_PATH = $(PREFIX)/precompiled_libvips



	ifeq ($(VIX_COMPILATION_MODE), PRECOMPILED_LIBVIPS)

		# force fetching libvips if previously configured to use PRECOMPILED_NIF_AND_LIBVIPS

		# since the precompiled vix does not bundle `include`

		PRECOMPILED_LIBVIPS_PREREQUISITE = $(PRECOMPILED_LIBVIPS_PATH)/include

	else

		PRECOMPILED_LIBVIPS_PREREQUISITE = $(PRECOMPILED_LIBVIPS_PATH)

	endif



	CFLAGS  += -pthread -I $(PRECOMPILED_LIBVIPS_PATH)/include -I $(PRECOMPILED_LIBVIPS_PATH)/lib/glib-2.0/include -I $(PRECOMPILED_LIBVIPS_PATH)/include/glib-2.0

	LDLIBS  += -L $(PRECOMPILED_LIBVIPS_PATH)/lib



	ifeq ($(UNAME_SYS), Darwin)

		LDFLAGS += -Wl,-rpath,@loader_path/precompiled_libvips/lib

		LDLIBS  += -lvips.42

	else ifeq ($(UNAME_SYS), Linux)

		LDFLAGS += -Wl,-s -Wl,--disable-new-dtags -Wl,-rpath='$$ORIGIN/precompiled_libvips/lib'

		LDLIBS  += -l:libvips.so.42

	endif

endif



# Verbosity



c_verbose_0 = @echo " C     " $(?F);

c_verbose = $(c_verbose_$(V))



link_verbose_0 = @echo " LD    " $(@F);

link_verbose = $(link_verbose_$(V))



SRC = $(shell find . -type f -name "*.c")



# Object files are put in `c_src` directory.

# Maybe we should put in `${MIX_APP_PATH}/priv`?

# but then we need to compile NIF for each env

OBJ = $(addsuffix .o,$(basename $(SRC)))



calling_from_make:

	cd .. && mix compile



all: install



install: $(PREFIX) $(VIX)



$(OBJ): Makefile $(PRECOMPILED_LIBVIPS_PREREQUISITE)



%.o: %.c

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



$(VIX): $(OBJ)

	$(link_verbose) $(CC) $^ -o $@ $(LDFLAGS) $(LDLIBS)



$(PREFIX):

	@mkdir -p $@



$(PRECOMPILED_LIBVIPS_PREREQUISITE):

	@MIX_EXS="../mix.exs" mix run --no-start --no-compile --no-deps-check ../compiler_scripts/precompiler.exs



clean:

	$(RM) $(VIX) $(OBJ)



clean_precompiled_libvips: clean

	$(RM) $(PREFIX)/libvips-*.tar.gz

	$(RM) -r $(PREFIX)/precompiled_libvips



.PHONY: all clean clean_precompiled_libvips calling_from_make install