7200065: Cross-compilation changes to support the new-build

Reviewed-by: dholmes, ohair
Contributed-by: NFredrik Ohrstrom <fredrik.ohrstrom@oracle.com>

make/linux/makefiles/adlc.make

@@ -109,7 +109,7 @@ all: $(EXEC)
 
 $(EXEC) : $(OBJECTS)
 	@echo Making adlc
-	$(QUIETLY) $(HOST.LINK_NOPROF.CXX) -o $(EXEC) $(OBJECTS)
+	$(QUIETLY) $(filter-out $(ARCHFLAG),$(HOST.LINK_NOPROF.CXX)) -o $(EXEC) $(OBJECTS)
 
 # Random dependencies:
 $(OBJECTS): opcodes.hpp classes.hpp adlc.hpp adlcVMDeps.hpp adlparse.hpp archDesc.hpp arena.hpp dict2.hpp filebuff.hpp forms.hpp formsopt.hpp formssel.hpp
@@ -213,14 +213,14 @@ PROCESS_AD_FILES = awk '{ \
 $(OUTDIR)/%.o: %.cpp
 	@echo Compiling $<
 	$(QUIETLY) $(REMOVE_TARGET)
-	$(QUIETLY) $(HOST.COMPILE.CXX) -o $@ $< $(COMPILE_DONE)
+	$(QUIETLY) $(filter-out $(ARCHFLAG),$(HOST.COMPILE.CXX)) -o $@ $< $(COMPILE_DONE)
 
 # Some object files are given a prefix, to disambiguate
 # them from objects of the same name built for the VM.
 $(OUTDIR)/adlc-%.o: %.cpp
 	@echo Compiling $<
 	$(QUIETLY) $(REMOVE_TARGET)
-	$(QUIETLY) $(HOST.COMPILE.CXX) -o $@ $< $(COMPILE_DONE)
+	$(QUIETLY) $(filter-out $(ARCHFLAG),$(HOST.COMPILE.CXX)) -o $@ $< $(COMPILE_DONE)
 
 # #########################################################################
 

make/linux/makefiles/defs.make

@@ -29,8 +29,14 @@
 SLASH_JAVA ?= /java
 
 # Need PLATFORM (os-arch combo names) for jdk and hotspot, plus libarch name
-ARCH:=$(shell uname -m)
-PATH_SEP = :
+
+# ARCH can be set explicitly in spec.gmk
+ifndef ARCH
+  ARCH := $(shell uname -m)
+endif
+
+PATH_SEP ?= :
+
 ifeq ($(LP64), 1)
   ARCH_DATA_MODEL ?= 64
 else
@@ -72,8 +78,8 @@ ifeq ($(ARCH), sparc64)
   HS_ARCH            = sparc
 endif
 
-# x86_64
-ifeq ($(ARCH), x86_64) 
+# amd64/x86_64
+ifneq (,$(findstring $(ARCH), amd64 x86_64))
   ifeq ($(ARCH_DATA_MODEL), 64)
     ARCH_DATA_MODEL = 64
     MAKE_ARGS       += LP64=1
@@ -90,8 +96,8 @@ ifeq ($(ARCH), x86_64)
   endif
 endif
 
-# i686
-ifeq ($(ARCH), i686)
+# i686/i586 ie 32-bit x86
+ifneq (,$(findstring $(ARCH), i686 i586))
   ARCH_DATA_MODEL  = 32
   PLATFORM         = linux-i586
   VM_PLATFORM      = linux_i486