From 73e4844066c7e898aefbf4eb697eccb26440f45e Mon Sep 17 00:00:00 2001
From: Slava Yurin <YurinVV@ya.ru>
Date: Thu, 20 Nov 2014 12:04:31 +0600
Subject: plugin/c_src: compile C++ source

Add compile .cc,.cpp,.C files as C++.
Compile each source file to .o.
Link all .o object to .so.
Delete .o on clean target.
---
 erlang.mk | 39 ++++++++++++++++++++++++++++++++-------
 1 file changed, 32 insertions(+), 7 deletions(-)

(limited to 'erlang.mk')

diff --git a/erlang.mk b/erlang.mk
index e553926..e979093 100644
--- a/erlang.mk
+++ b/erlang.mk
@@ -594,23 +594,33 @@ UNAME_SYS := $(shell uname -s)
 ifeq ($(UNAME_SYS), Darwin)
 	CC ?= cc
 	CFLAGS ?= -O3 -std=c99 -arch x86_64 -flat_namespace -undefined suppress -finline-functions -Wall -Wmissing-prototypes
+	CXXFLAGS ?= -O3 -arch x86_64 -flat_namespace -undefined suppress -finline-functions -Wall
 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_src_verbose_0 = @echo " C_SRC " $(?F);
-c_src_verbose = $(c_src_verbose_$(V))
+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.
 
@@ -623,14 +633,29 @@ clean::
 	$(MAKE) -C $(C_SRC_DIR) clean
 
 else
-SOURCE := $(shell find $(C_SRC_DIR) -type f -name \*.c)
+SOURCES := $(shell find $(C_SRC_DIR) -type f -regex ".*\.\(C\|cc?\|cpp\)")
+OBJECTS = $(addsuffix .o, $(basename $(SOURCES)))
+
+COMPILE_C = $(c_verbose) $(CC) $(CFLAGS) $(CPPFLAGS) $(C_SRC_OPTS) -c
+COMPILE_CPP = $(cpp_verbose) $(CXX) $(CXXFLAGS) $(CPPFLAGS) $(C_SRC_OPTS) -c
 
 app:: $(C_SRC_ENV) $(C_SRC_OUTPUT)
 
-$(C_SRC_OUTPUT): $(SOURCE)
+$(C_SRC_OUTPUT): $(OBJECTS)
 	@mkdir -p priv/
-	$(c_src_verbose) $(CC) $(CFLAGS) $(SOURCE) \
-		$(LDFLAGS) $(LDLIBS) -o $(C_SRC_OUTPUT) $(C_SRC_OPTS)
+	$(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) $<
 
 $(C_SRC_ENV):
 	@erl -noshell -noinput -eval "file:write_file(\"$(C_SRC_ENV)\", \
@@ -646,7 +671,7 @@ $(C_SRC_ENV):
 clean:: clean-c_src
 
 clean-c_src:
-	$(gen_verbose) rm -f $(C_SRC_OUTPUT)
+	$(gen_verbose) rm -f $(C_SRC_OUTPUT) $(OBJECTS)
 
 distclean:: distclean-c_src-env
 
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