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# Based on c_src.mk from erlang.mk by Loic Hoguin <essen@ninenines.eu>
CURDIR := $(shell pwd)
BASEDIR := $(abspath $(CURDIR)/..)
PROJECT ?= $(notdir $(BASEDIR))
PROJECT := $(strip $(PROJECT))
ERTS_INCLUDE_DIR ?= $(shell erl -noshell -s init stop -eval "io:format(\"~ts/erts-~ts/include/\", [code:root_dir(), erlang:system_info(version)]).")
ERL_INTERFACE_INCLUDE_DIR ?= $(shell erl -noshell -s init stop -eval "io:format(\"~ts\", [code:lib_dir(erl_interface, include)]).")
ERL_INTERFACE_LIB_DIR ?= $(shell erl -noshell -s init stop -eval "io:format(\"~ts\", [code:lib_dir(erl_interface, lib)]).")
C_SRC_DIR = $(CURDIR)
C_SRC_OUTPUT ?= $(CURDIR)/../priv/$(PROJECT).so
# System type and C compiler/flags.
UNAME_SYS := $(shell uname -s)
ifeq ($(UNAME_SYS), Darwin)
CC ?= cc
CFLAGS ?= -O3 -std=c99 -arch x86_64 -finline-functions -Wall -Wmissing-prototypes
CXXFLAGS ?= -O3 -arch x86_64 -finline-functions -Wall
LDFLAGS ?= -arch x86_64 -flat_namespace -undefined suppress
else ifeq ($(UNAME_SYS), FreeBSD)
CC ?= cc
CFLAGS ?= -O3 -std=c99 -finline-functions -Wall -Wmissing-prototypes
CXXFLAGS ?= -O3 -finline-functions -Wall
else ifeq ($(UNAME_SYS), Linux)
CC ?= gcc
CFLAGS ?= -O3 -std=c99 -finline-functions -Wall -Wmissing-prototypes
CXXFLAGS ?= -O3 -finline-functions -Wall
endif
CFLAGS += -fPIC -I $(ERTS_INCLUDE_DIR) -I $(ERL_INTERFACE_INCLUDE_DIR)
CXXFLAGS += -fPIC -I $(ERTS_INCLUDE_DIR) -I $(ERL_INTERFACE_INCLUDE_DIR)
LDLIBS += -L $(ERL_INTERFACE_LIB_DIR) -lerl_interface -lei
LDFLAGS += -shared
# Verbosity.
c_verbose_0 = @echo " C " $(?F);
c_verbose = $(c_verbose_$(V))
cpp_verbose_0 = @echo " CPP " $(?F);
cpp_verbose = $(cpp_verbose_$(V))
link_verbose_0 = @echo " LD " $(@F);
link_verbose = $(link_verbose_$(V))
SOURCES := $(shell find $(C_SRC_DIR) -type f \( -name "*.c" -o -name "*.C" -o -name "*.cc" -o -name "*.cpp" \))
OBJECTS = $(addsuffix .o, $(basename $(SOURCES)))
COMPILE_C = $(c_verbose) $(CC) $(CFLAGS) $(CPPFLAGS) -c
COMPILE_CPP = $(cpp_verbose) $(CXX) $(CXXFLAGS) $(CPPFLAGS) -c
$(C_SRC_OUTPUT): $(OBJECTS)
@mkdir -p $(BASEDIR)/priv/
$(link_verbose) $(CC) $(OBJECTS) $(LDFLAGS) $(LDLIBS) -o $(C_SRC_OUTPUT)
%.o: %.c
$(COMPILE_C) $(OUTPUT_OPTION) $<
%.o: %.cc
$(COMPILE_CPP) $(OUTPUT_OPTION) $<
%.o: %.C
$(COMPILE_CPP) $(OUTPUT_OPTION) $<
%.o: %.cpp
$(COMPILE_CPP) $(OUTPUT_OPTION) $<
clean:
@rm -f $(C_SRC_OUTPUT) $(OBJECTS)
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