Compatible with rebar3

Author: Silviu Caragea

.gitignore

@@ -4,3 +4,4 @@
 /epqueue_nif.xcodeproj/
 /priv/
 *.iml
+/_build/

README.md

@@ -27,10 +27,16 @@ This can be changed if it's required by moving the encoding/decoding or terms in
 
 Compile:
 
-```
+```sh
 rebar compile
 ```
 
+or
+
+```sh
+rebar3 compile
+```
+
 Simple usage:
 
 ```erlang

c_src/.gitignore

@@ -1,2 +1,3 @@
 *.d
 *.o
+/env.mk

c_src/Makefile

@@ -0,0 +1,7 @@
+
+PROJECT_NIF_NAME=epqueue_nif
+
+include nif.mk
+
+CXXFLAGS+=  -g -Wextra -Werror -Wno-missing-field-initializers -fno-rtti -fno-exceptions
+LDFLAGS +=  -lstdc++

c_src/nif.mk

@@ -0,0 +1,84 @@
+# Based on c_src.mk from erlang.mk by Loic Hoguin <[email protected]>
+# https://github.com/ninenines/erlang.mk/blob/master/plugins/c_src.mk
+
+CURDIR := $(shell pwd)
+BASEDIR := $(abspath $(CURDIR)/..)
+
+C_SRC_DIR = $(CURDIR)
+C_SRC_ENV ?= $(C_SRC_DIR)/env.mk
+C_SRC_OUTPUT ?= $(CURDIR)/../priv/$(PROJECT_NIF_NAME).so
+
+#regenerate all the time the env.mk
+ifneq ($(wildcard $(C_SRC_DIR)),)
+	GEN_ENV ?= $(shell erl -noshell -s init stop -eval "file:write_file(\"$(C_SRC_ENV)\", \
+		io_lib:format( \
+			\"ERTS_INCLUDE_DIR ?= ~s/erts-~s/include/~n\" \
+			\"ERL_INTERFACE_INCLUDE_DIR ?= ~s~n\" \
+			\"ERL_INTERFACE_LIB_DIR ?= ~s~n\", \
+			[code:root_dir(), erlang:system_info(version), \
+			code:lib_dir(erl_interface, include), \
+			code:lib_dir(erl_interface, lib)])), \
+		halt().")
+    $(GEN_ENV)
+endif
+
+include $(C_SRC_ENV)
+
+# 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  -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)
+LDFLAGS += -L $(ERL_INTERFACE_LIB_DIR) -shared -lerl_interface -lei
+
+# 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) -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); rm -f $(C_SRC_ENV)

rebar.config

@@ -1,19 +1,5 @@
-{port_specs, [
-
-    {"darwin","priv/epqueue_nif.so", ["c_src/*.cc"],[
-        {env, [
-            {".*", "CXXFLAGS", "$CXXFLAGS -g -Wall -Wextra -Werror -Wno-missing-field-initializers -fno-exceptions -fno-rtti -O3"},
-            {".*", "LDFLAGS", "$LDFLAGS -lstdc++"}
-        ]}
-    ]},
-
-    {"linux","priv/epqueue_nif.so", ["c_src/*.cc"],[
-        {env, [
-            {".*", "CXXFLAGS", "$CXXFLAGS -g -Wall -Wextra -Werror -Wno-missing-field-initializers -fno-exceptions -fno-rtti -O3"},
-            {".*", "LDFLAGS", "$LDFLAGS -lstdc++"}
-        ]}
-    ]}
-]}.
+{pre_hooks, [{"(linux|darwin)", compile, "make V=0 -C c_src -j 8"}]}.
+{post_hooks, [{"(linux|darwin)", clean, "make -C c_src clean"}]}.
 
 %because enif_binary_to_term and enif_term_to_binary are not available in previous versions.
 %this can be changed if it's required by moving the encoding/decoding in erlang and in NIF only store the received binary

rebar.lock

@@ -0,0 +1 @@
+[].