[NaCl SDK] make example Makefiles quiet by default

native_client_sdk/src/tools/common.mk

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 #
 # GNU Make based build file.  For details on GNU Make see:
 #   http://www.gnu.org/software/make/manual/make.html
 #
 #
 
@@ skipping 47 matching lines @@
 #
 # Disable DOS PATH warning when using Cygwin based NaCl tools on Windows.
 #
 CYGWIN?=nodosfilewarning
 export CYGWIN
 
 
 #
 # Alias for standard POSIX file system commands
 #
-CP:=python $(NACL_SDK_ROOT)/tools/oshelpers.py cp
-MKDIR:=python $(NACL_SDK_ROOT)/tools/oshelpers.py mkdir
-MV:=python $(NACL_SDK_ROOT)/tools/oshelpers.py mv
-RM:=python $(NACL_SDK_ROOT)/tools/oshelpers.py rm
-WHICH:=python $(NACL_SDK_ROOT)/tools/oshelpers.py which
-
+OSHELPERS=python $(NACL_SDK_ROOT)/tools/oshelpers.py
+WHICH:=$(OSHELPERS) which
+ifdef V
+RM:=$(OSHELPERS) rm
+CP:=$(OSHELPERS) cp
+MKDIR:=$(OSHELPERS) mkdir
+MV:=$(OSHELPERS) mv
+else
+RM:=@$(OSHELPERS) rm
+CP:=@$(OSHELPERS) cp
+MKDIR:=@$(OSHELPERS) mkdir
+MV:=@$(OSHELPERS) mv
+endif
 
 #
 # Compute path to requested NaCl Toolchain
 #
 OSNAME:=$(shell python $(NACL_SDK_ROOT)/tools/getos.py)
 TC_PATH:=$(abspath $(NACL_SDK_ROOT)/toolchain)
 
 
 
 
@@ skipping 32 matching lines @@
 $(foreach tool,$(USABLE_TOOLCHAINS),$(eval $(call TOOLCHAIN_RULE,$(tool),$(dep))))
 
 .PHONY: all_versions
 all_versions: $(TOOLCHAIN_LIST)
 
 #
 # Target to remove temporary files
 #
 .PHONY: clean
 clean:
-        $(RM) $(TARGET).nmf
+        $(RM) -f $(TARGET).nmf
         $(RM) -fr $(TOOLCHAIN)
 
 
 #
 # Rules for output directories.
 #
 # Output will be places in a directory name based on Toolchain and configuration
 # be default this will be "newlib/Debug".  We use a python wrapped MKDIR to
 # proivde a cross platform solution. The use of '|' checks for existance instead
 # of timestamp, since the directory can update when files change.
 #
 %dir.stamp :
         $(MKDIR) -p $(dir $@)
-        echo "Directory Stamp" > $@
+        @echo "Directory Stamp" > $@
 
 OUTDIR:=$(TOOLCHAIN)/$(CONFIG)
 STAMPDIR?=$(OUTDIR)
 
 #
 # Dependency Macro
 #
 # $1 = Name of stamp
 # $2 = Directory for the sub-make
 # $3 = Extra Settings
@@ skipping 33 matching lines @@
 # Common Compile Options
 #
 ifeq ('Release','$(CONFIG)')
 POSIX_FLAGS?=-g -O2 -pthread -MMD
 else
 POSIX_FLAGS?=-g -O0 -pthread -MMD
 endif
 
 NACL_CFLAGS?=-Wno-long-long -Werror
 NACL_CXXFLAGS?=-Wno-long-long -Werror
+NACL_LDFLAGS?=-Wl,-as-needed
 
 #
 # Default Paths
 #
 ifeq (,$(findstring $(TOOLCHAIN),linux mac win))
 INC_PATHS?=$(NACL_SDK_ROOT)/include $(EXTRA_INC_PATHS)
 else
 INC_PATHS?=$(NACL_SDK_ROOT)/include/$(OSNAME) $(NACL_SDK_ROOT)/include $(EXTRA_INC_PATHS)
 endif
 
 LIB_PATHS?=$(NACL_SDK_ROOT)/lib $(EXTRA_LIB_PATHS)
 
+#
+# Define a LOG macro that allow a command to be run in quiet mode where
+# the command echoed is not the same as the actual command executed.
+# The primary use case for this is to avoid echoing the full compiler
+# and linker command in the default case.  Defining V=1 will restore
+# the verbose behavior
+#
+# $1 = The name of the tool being run
+# $2 = The target file being built
+# $3 = The full command to run
+#
+ifdef V
+define LOG
+$(3)
+endef
+else
+define LOG
+@echo "  $(1) $(2)" && $(3)
+endef
+endif
+
 
 #
 # If the requested toolchain is a NaCl or PNaCl toolchain, the use the
 # macros and targets defined in nacl.mk, otherwise use the host sepecific
 # macros and targets.
 #
 ifneq (,$(findstring $(TOOLCHAIN),linux mac))
 include $(NACL_SDK_ROOT)/tools/host_gcc.mk
 endif
 
@@ skipping 58 matching lines @@
 
 SYSARCH=$(shell python $(NACL_SDK_ROOT)/tools/getos.py --chrome)
 GDB_ARGS+=-D $(TC_PATH)/$(OSNAME)_x86_$(TOOLCHAIN)/bin/$(SYSARCH)-nacl-gdb
 GDB_ARGS+=-D $(CURDIR)/$(OUTDIR)/$(TARGET)_$(SYSARCH).nexe
 
 DEBUG: CHECK_FOR_CHROME all
         $(RUN_PY) $(GDB_ARGS) \
             -C $(CURDIR) -P $(PAGE) $(addprefix -E ,$(CHROME_ENV)) -- \
             $(CHROME_PATH) $(CHROME_ARGS) --enable-nacl-debug \
             --register-pepper-plugins="$(PPAPI_DEBUG),$(PPAPI_RELEASE)"