hotspot/make/solaris/makefiles/sparcWorks.make misses 64-bit flags with Sun Studio 5.10

[Christian Thalinger]

Hi!

I'm having some linking problems when building HotSpot for i386 with Sun
Studio 5.10 (but that will be the subject of another mail), so I tried
to build the 64-bit version.  I noticed that the -m64 switch is missing
and 32-bit object are generated.  A little digging into the Makefiles
revealed this line in hotspot/make/solaris/makefiles/sparcWorks.make:

# Select the ARCHFLAGs and other SS12 (5.9) options
ifeq ($(shell expr $(COMPILER_REV) \>= 5.9), 1)

Executing this line with 5.10 gives:

$ expr "5.10" \>= "5.9"
0

Very true, as 5.1 is obviously less than 5.9.  I don't have a patch for
this one ready as I'm not sure what the appropriate fix is (fixing only
this check or doing something like COMPILER_REV_MAJOR,
COMPILER_REV_MINOR).  What would be the appropriate fix?

- Christian