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

native_client_sdk/src/tools/host_gcc.mk

Index: native_client_sdk/src/tools/host_gcc.mk
diff --git a/native_client_sdk/src/tools/host_gcc.mk b/native_client_sdk/src/tools/host_gcc.mk
index b732431b0b0f693af5fc92a36fc9ef6cc79bf379..ddbcf2ed87666d55ebce6fec4b590b3bd0275c7f 100644
--- a/native_client_sdk/src/tools/host_gcc.mk
+++ b/native_client_sdk/src/tools/host_gcc.mk
@@ -40,14 +40,14 @@ LINUX_CFLAGS = -fPIC -pthread $(LINUX_WARNINGS) -I$(NACL_SDK_ROOT)/include -I$(N
 define C_COMPILER_RULE
 -include $(call SRC_TO_DEP,$(1))
 $(call SRC_TO_OBJ,$(1)): $(1) $(TOP_MAKE) | $(dir $(call SRC_TO_OBJ,$(1)))dir.stamp
-	$(call LOG,CC  ,$$@,$(HOST_CC) -o $$@ -c $$< -fPIC $(POSIX_FLAGS) $(2) $(LINUX_CFLAGS))
+	$(call LOG,CC  ,$$@,$(HOST_CC) -o $$@ -c $$< -fPIC $(POSIX_FLAGS) $(LINUX_CFLAGS) $(2))
 	@$(FIXDEPS) $(call SRC_TO_DEP_PRE_FIXUP,$(1))
 endef
 
 define CXX_COMPILER_RULE
 -include $(call SRC_TO_DEP,$(1))
 $(call SRC_TO_OBJ,$(1)): $(1) $(TOP_MAKE) | $(dir $(call SRC_TO_OBJ,$(1)))dir.stamp
-	$(call LOG,CXX ,$$@,$(HOST_CXX) -o $$@ -c $$< -fPIC $(POSIX_FLAGS) $(2) $(LINUX_CFLAGS))
+	$(call LOG,CXX ,$$@,$(HOST_CXX) -o $$@ -c $$< -fPIC $(POSIX_FLAGS) $(LINUX_CFLAGS) $(2))
 	@$(FIXDEPS) $(call SRC_TO_DEP_PRE_FIXUP,$(1))
 endef
 
@@ -108,11 +108,19 @@ endef
 # $5 = List of lib dirs
 # $6 = Other Linker Args
 #
+ifdef SEL_LDR
+define LINKER_RULE
+all: $(1)
+$(1): $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
+	$(call LOG,LINK,$$@,$(HOST_LINK) -o $(1) $(2) $(NACL_LDFLAGS) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6))
+endef
+else
 define LINKER_RULE
 all: $(1)
 $(1): $(2) $(foreach dep,$(4),$(STAMPDIR)/$(dep).stamp)
 	$(call LOG,LINK,$$@,$(HOST_LINK) -shared -o $(1) $(2) $(NACL_LDFLAGS) $(foreach path,$(5),-L$(path)/$(OSNAME)_host)/$(CONFIG) $(foreach lib,$(3),-l$(lib)) $(6))
 endef
+endif
 
 
 #