1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
# Copyright (c) 2014-2015, Loïc Hoguin <[email protected]>
# This file is part of erlang.mk and subject to the terms of the ISC License.
.PHONY: clean-c_src distclean-c_src-env
# Configuration.
C_SRC_DIR ?= $(CURDIR)/c_src
C_SRC_ENV ?= $(C_SRC_DIR)/env.mk
C_SRC_OUTPUT ?= $(CURDIR)/priv/$(PROJECT).so
C_SRC_TYPE ?= shared
# System type and C compiler/flags.
ifeq ($(PLATFORM),darwin)
CC ?= cc
CFLAGS ?= -O3 -std=c99 -arch x86_64 -finline-functions -Wall -Wmissing-prototypes
CXXFLAGS ?= -O3 -arch x86_64 -finline-functions -Wall
LDFLAGS ?= -arch x86_64 -flat_namespace -undefined suppress
else ifeq ($(PLATFORM),freebsd)
CC ?= cc
CFLAGS ?= -O3 -std=c99 -finline-functions -Wall -Wmissing-prototypes
CXXFLAGS ?= -O3 -finline-functions -Wall
else ifeq ($(PLATFORM),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
# 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))
# Targets.
ifeq ($(wildcard $(C_SRC_DIR)),)
else ifneq ($(wildcard $(C_SRC_DIR)/Makefile),)
app:: app-c_src
test-build:: app-c_src
app-c_src:
$(MAKE) -C $(C_SRC_DIR)
clean::
$(MAKE) -C $(C_SRC_DIR) clean
else
ifeq ($(SOURCES),)
SOURCES := $(sort $(foreach pat,*.c *.C *.cc *.cpp,$(call core_find,$(C_SRC_DIR)/,$(pat))))
endif
OBJECTS = $(addsuffix .o, $(basename $(SOURCES)))
COMPILE_C = $(c_verbose) $(CC) $(CFLAGS) $(CPPFLAGS) -c
COMPILE_CPP = $(cpp_verbose) $(CXX) $(CXXFLAGS) $(CPPFLAGS) -c
app:: $(C_SRC_ENV) $(C_SRC_OUTPUT)
test-build:: $(C_SRC_ENV) $(C_SRC_OUTPUT)
$(C_SRC_OUTPUT): $(OBJECTS)
$(verbose) mkdir -p priv/
$(link_verbose) $(CC) $(OBJECTS) \
$(LDFLAGS) $(if $(filter $(C_SRC_TYPE),shared),-shared) $(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:: clean-c_src
clean-c_src:
$(gen_verbose) rm -f $(C_SRC_OUTPUT) $(OBJECTS)
endif
ifneq ($(wildcard $(C_SRC_DIR)),)
$(C_SRC_ENV):
$(verbose) $(ERL) -eval "file:write_file(\"$(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()."
distclean:: distclean-c_src-env
distclean-c_src-env:
$(gen_verbose) rm -f $(C_SRC_ENV)
-include $(C_SRC_ENV)
endif
# Templates.
define bs_c_nif
#include "erl_nif.h"
static int loads = 0;
static int load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
{
/* Initialize private data. */
*priv_data = NULL;
loads++;
return 0;
}
static int upgrade(ErlNifEnv* env, void** priv_data, void** old_priv_data, ERL_NIF_TERM load_info)
{
/* Convert the private data to the new version. */
*priv_data = *old_priv_data;
loads++;
return 0;
}
static void unload(ErlNifEnv* env, void* priv_data)
{
if (loads == 1) {
/* Destroy the private data. */
}
loads--;
}
static ERL_NIF_TERM hello(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
if (enif_is_atom(env, argv[0])) {
return enif_make_tuple2(env,
enif_make_atom(env, "hello"),
argv[0]);
}
return enif_make_tuple2(env,
enif_make_atom(env, "error"),
enif_make_atom(env, "badarg"));
}
static ErlNifFunc nif_funcs[] = {
{"hello", 1, hello}
};
ERL_NIF_INIT($n, nif_funcs, load, NULL, upgrade, unload)
endef
define bs_erl_nif
-module($n).
-export([hello/1]).
-on_load(on_load/0).
on_load() ->
PrivDir = case code:priv_dir(?MODULE) of
{error, _} ->
AppPath = filename:dirname(filename:dirname(code:which(?MODULE))),
filename:join(AppPath, "priv");
Path ->
Path
end,
erlang:load_nif(filename:join(PrivDir, atom_to_list(?MODULE)), 0).
hello(_) ->
erlang:nif_error({not_loaded, ?MODULE}).
endef
$(foreach template,bs_c_nif bs_erl_nif, \
$(eval _$(template) = $$(subst $$(tab),$$(WS),$$($(template)))) \
$(eval export _$(template)))
new-nif:
ifneq ($(wildcard $(C_SRC_DIR)/$n.c),)
$(error Error: $(C_SRC_DIR)/$n.c already exists)
endif
ifneq ($(wildcard src/$n.erl),)
$(error Error: src/$n.erl already exists)
endif
ifdef in
$(verbose) $(MAKE) -C $(APPS_DIR)/$(in)/ new-nif n=$n in=
else
$(verbose) mkdir -p $(C_SRC_DIR) src/
$(call render_template,bs_c_nif,$(C_SRC_DIR)/$n.c)
$(call render_template,bs_erl_nif,src/$n.erl)
endif
|
