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crc

0.4.1
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A library used to calculate CRC checksums for binary data.

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crc Makefile
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Makefile 

# Variables to override

#

# CC            C compiler

# CROSSCOMPILE    crosscompiler prefix, if any

# CFLAGS    compiler flags for compiling all C files

# ERL_CFLAGS    additional compiler flags for files using Erlang header files

# ERL_EI_LIBDIR path to libei.a

# LDFLAGS    linker flags for linking all binaries

# ERL_LDFLAGS    additional linker flags for projects referencing Erlang libraries



# Look for the EI library and header files

# For crosscompiled builds, ERL_EI_INCLUDE_DIR and ERL_EI_LIBDIR must be

# passed into the Makefile.

ifeq ($(ERL_EI_INCLUDE_DIR),)

	ERL_ROOT_DIR = $(shell erl -eval "io:format(\"~s~n\", [code:root_dir()])" -s init stop -noshell)

ifeq ($(ERL_ROOT_DIR),)

	$(error Could not find the Erlang installation. Check to see that 'erl' is in your PATH)

endif

ERL_EI_INCLUDE_DIR = "$(ERL_ROOT_DIR)/usr/include"

ERL_EI_LIBDIR = "$(ERL_ROOT_DIR)/usr/lib"

endif



# Set Erlang-specific compile and linker flags

ERL_CFLAGS ?= -I$(ERL_EI_INCLUDE_DIR)

ERL_LDFLAGS ?= -L$(ERL_EI_LIBDIR)



LDFLAGS += -fPIC -shared  -dynamiclib

CFLAGS ?= -fPIC -O2 -Wall -Wextra -Wno-unused-parameter

CC ?= $(CROSSCOMPILER)gcc



ifeq ($(CROSSCOMPILE),)

	ifeq ($(shell uname),Darwin)

	LDFLAGS += -undefined dynamic_lookup

endif

endif



NIF_SRC=\

	src/crc_16.c\

	src/crc_16_ccitt.c\

	src/crc_16_modbus.c\

	src/crc_nif.c



.PHONY: all clean



all: crc



%.o: %.c

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



priv/crc_nif.so: $(NIF_SRC)

		@mkdir -p priv

		$(CC) $^ $(ERL_LDFLAGS) $(LDFLAGS) $(ERL_CFLAGS) -o $@



clean:

	$(MIX) clean

	rm -f priv/crc.so src/*.o