[NaCl SDK] Enable linux host build for nacl_io and nacl_io_tests.

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 272 matching lines @@
 else
 
 .PHONY: $(STAMPDIR)/$(1).stamp
 $(STAMPDIR)/$(1).stamp:
         @echo Ignore $(1)
 endif
 endef
 
 
 ifeq ($(TOOLCHAIN),win)
+ifdef SEL_LDR
+HOST_EXT = .exe
+else
 HOST_EXT = .dll
+endif
+else
+ifdef SEL_LDR
+HOST_EXT =

[binji, 2013/11/15 17:26:23]

Ah, sneaky. SEL_LDR build is just a normal build... it's convenient, but I'm not
sure I like it; don't you think it is weird to build

make TOOLCHAIN=linux SEL_LDR=1

and get a native binary that can't be run via sel_ldr? Maybe if we change
SEL_LDR to COMMAND_LINE or something?

[Sam Clegg, 2013/11/15 18:13:34]

I agree.  How about STANDALONE?

 else
 HOST_EXT = .so
 endif
+endif
 
 
 #
 # Common Compile Options
 #
 # For example, -DNDEBUG is added to release builds by default
 # so that calls to assert(3) are not included in the build.
 #
 ifeq ($(CONFIG),Release)
 POSIX_FLAGS ?= -g -O2 -pthread -MMD -DNDEBUG
 NACL_LDFLAGS ?= -O2
 PNACL_LDFLAGS ?= -O2
 else
 POSIX_FLAGS ?= -g -O0 -pthread -MMD -DNACL_SDK_DEBUG
 endif
 
 ifdef SEL_LDR
 POSIX_FLAGS += -DSEL_LDR=1
 endif
 
 NACL_CFLAGS ?= -Wno-long-long -Werror
 NACL_CXXFLAGS ?= -Wno-long-long -Werror
-NACL_LDFLAGS += -Wl,-as-needed
+NACL_LDFLAGS += -Wl,-as-needed -pthread
 
 #
 # Default Paths
 #
 ifeq (,$(findstring $(TOOLCHAIN),linux mac win))
 INC_PATHS ?= $(NACL_SDK_ROOT)/include $(NACL_SDK_ROOT)/include/$(TOOLCHAIN) $(EXTRA_INC_PATHS)
 else
 INC_PATHS ?= $(NACL_SDK_ROOT)/include/$(OSNAME) $(NACL_SDK_ROOT)/include $(EXTRA_INC_PATHS)
 endif
 
@@ skipping 189 matching lines @@
 # uppercase aliases (for backward compatibility)
 .PHONY: CHECK_FOR_CHROME DEBUG LAUNCH RUN
 CHECK_FOR_CHROME: check_for_chrome
 DEBUG: debug
 LAUNCH: run
 RUN: run
 
 endif  # TOOLCHAIN is valid...
 
 endif  # TOOLCHAIN=all