remove -Werror from makefiles of examples and tools

example/echo_c++/Makefile

@@ -3,7 +3,7 @@ include $(BRPC_PATH)/config.mk
 # Notes on the flags:
 # 1. Added -fno-omit-frame-pointer: perf/tcmalloc-profiler use frame pointers by default
 # 2. Added -D__const__= : Avoid over-optimizations of TLS variables by GCC>=4.8
-CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -Wno-unused-parameter -fPIC -fno-omit-frame-pointer
+CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer
 HDRS+=$(BRPC_PATH)/output/include
 LIBS+=$(BRPC_PATH)/output/lib
 HDRPATHS = $(addprefix -I, $(HDRS))

example/http_c++/Makefile

@@ -4,7 +4,7 @@ include $(BRPC_PATH)/config.mk
 # Notes on the flags:
 # 1. Added -fno-omit-frame-pointer: perf/tcmalloc-profiler use frame pointers by default
 # 2. Added -D__const__= : Avoid over-optimizations of TLS variables by GCC>=4.8
-CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -Wno-unused-parameter -fPIC -fno-omit-frame-pointer
+CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer
 ifeq ($(NEED_GPERFTOOLS), 1)
 	CXXFLAGS+=-DBRPC_ENABLE_CPU_PROFILER
 endif

example/memcache_c++/Makefile

 BRPC_PATH = ../../
 include $(BRPC_PATH)/config.mk
-CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -fPIC -fno-omit-frame-pointer
+CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -fPIC -fno-omit-frame-pointer
 HDRS+=$(BRPC_PATH)/output/include
 LIBS+=$(BRPC_PATH)/output/lib
 HDRPATHS = $(addprefix -I, $(HDRS))

example/multi_threaded_echo_c++/Makefile

@@ -4,7 +4,7 @@ include $(BRPC_PATH)/config.mk
 # Notes on the flags:
 # 1. Added -fno-omit-frame-pointer: perf/tcmalloc-profiler use frame pointers by default
 # 2. Added -D__const__= : Avoid over-optimizations of TLS variables by GCC>=4.8
-CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -Wno-unused-parameter -fPIC -fno-omit-frame-pointer
+CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer
 ifeq ($(NEED_GPERFTOOLS), 1)
 	CXXFLAGS+=-DBRPC_ENABLE_CPU_PROFILER
 endif

example/redis_c++/Makefile

 BRPC_PATH = ../../
 include $(BRPC_PATH)/config.mk
-CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -fPIC -fno-omit-frame-pointer
+CXXFLAGS+=$(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -fPIC -fno-omit-frame-pointer
 HDRS+=$(BRPC_PATH)/output/include
 LIBS+=$(BRPC_PATH)/output/lib
 HDRPATHS = $(addprefix -I, $(HDRS))

tools/clean_all_examples

 saved_pwd_before_making=$PWD
 for file in `find example tools -name Makefile`; do
     cd $(dirname $file)
-    echo -e "\n[$file]"
+    echo
+    echo "\n[$file]"
     make -s clean
     cd $saved_pwd_before_making
 done

tools/parallel_http/Makefile

 BRPC_PATH = ../../
 include $(BRPC_PATH)/config.mk
-CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -fPIC -fno-omit-frame-pointer -Wno-unused-parameter
+CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -fPIC -fno-omit-frame-pointer -Wno-unused-parameter
 HDRPATHS = -I$(BRPC_PATH)/output/include $(addprefix -I, $(HDRS))
 LIBPATHS = -L$(BRPC_PATH)/output/lib $(addprefix -L, $(LIBS))
 STATIC_LINKINGS += -lbrpc

tools/rpc_press/Makefile

 BRPC_PATH = ../../
 include $(BRPC_PATH)/config.mk
-CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -fPIC -fno-omit-frame-pointer -Wno-unused-parameter
+CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -fPIC -fno-omit-frame-pointer -Wno-unused-parameter
 HDRPATHS = -I$(BRPC_PATH)/output/include $(addprefix -I, $(HDRS))
 LIBPATHS = -L$(BRPC_PATH)/output/lib $(addprefix -L, $(LIBS))
 STATIC_LINKINGS += -lbrpc

tools/rpc_replay/Makefile

 BRPC_PATH = ../../
 include $(BRPC_PATH)/config.mk
-CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -fPIC -fno-omit-frame-pointer -Wno-unused-parameter
+CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -fPIC -fno-omit-frame-pointer -Wno-unused-parameter
 HDRPATHS = -I$(BRPC_PATH)/output/include $(addprefix -I, $(HDRS))
 LIBPATHS = -L$(BRPC_PATH)/output/lib $(addprefix -L, $(LIBS))
 STATIC_LINKINGS += -lbrpc

tools/rpc_view/Makefile

@@ -3,7 +3,7 @@ include $(BRPC_PATH)/config.mk
 # Notes on the flags:
 # 1. Added -fno-omit-frame-pointer: perf/tcmalloc-profiler use frame pointers by default
 # 2. Added -D__const__= : Avoid over-optimizations of TLS variables by GCC>=4.8
-CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -Wno-unused-parameter -fPIC -fno-omit-frame-pointer
+CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer
 HDRPATHS = -I$(BRPC_PATH)/output/include $(addprefix -I, $(HDRS))
 LIBPATHS = -L$(BRPC_PATH)/output/lib $(addprefix -L, $(LIBS))
 STATIC_LINKINGS += -lbrpc

tools/trackme_server/Makefile

 BRPC_PATH = ../../
 include $(BRPC_PATH)/config.mk
-CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Werror -fPIC -fno-omit-frame-pointer
+CXXFLAGS = $(CPPFLAGS) -std=c++0x -DNDEBUG -O2 -D__const__= -pipe -W -Wall -fPIC -fno-omit-frame-pointer
 HDRPATHS = -I$(BRPC_PATH)/output/include $(addprefix -I, $(HDRS))
 LIBPATHS = -L$(BRPC_PATH)/output/lib $(addprefix -L, $(LIBS))
 STATIC_LINKINGS += -lbrpc