[NaCl SDK] Remove newlib toolchain from the SDK

native_client_sdk/src/tools/nacl_gcc.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 508 matching lines @@
 CREATE_HTML := python $(NACL_SDK_ROOT)/tools/create_html.py
 
 define HTML_RULE
 all: $(OUTDIR)/$(1).html
 $(OUTDIR)/$(1).html: $(EXECUTABLES)
         $(call LOG,CREATE_HTML,$$@,$(CREATE_HTML) $(HTML_FLAGS) -o $$@ $$^)
 endef
 
 
 #
-# Determine which executable to pass into the debugger.  For newlib
-# this is the NEXE which will actually be used.  For glibc, runnable-ld.so
-# is the "app", and the "app" is actual an .so we load.
+# Determine which executable to pass into the debugger.
+# For glibc, runnable-ld.so is the executable, and the "app" is an .so that
+# it loads.
 #
 ifeq (x86_32,$(SYSARCH))
 LIB_NAME = lib32
 ifeq (x86_64,$(SYSARCH))
 LIB_NAME = lib64
 else
 LIB_NAME = lib
 endif
 endif
 
 
-ifeq (newlib,$(TOOLCHAIN))
-GDB_DEBUG_TARGET = $(abspath $(OUTDIR))/$(TARGET)_$(SYSARCH).nexe
-else
 GDB_DEBUG_TARGET = $(abspath $(OUTDIR))/$(LIB_NAME)/runnable-ld.so
-endif
 
 ifdef STANDALONE
 run: all
 ifndef NACL_ARCH
         $(error Cannot run in sel_ldr unless $$NACL_ARCH is set)
 endif
         $(SEL_LDR_PATH) $(SEL_LDR_ARGS) $(OUTDIR)/$(TARGET)_$(NACL_ARCH).nexe -- $(EXE_ARGS)
 
 debug: all
 ifndef NACL_ARCH
         $(error Cannot run in sel_ldr unless $$NACL_ARCH is set)
 endif
         $(SEL_LDR_PATH) -d $(SEL_LDR_ARGS) $(OUTDIR)/$(TARGET)_$(NACL_ARCH).nexe -- $(EXE_ARGS)
 endif