compiler problems

[Michael T. Harding]

I have a c program that needs to be recompiled at a higher risc level. I have the source file and root access to the higher RISC system, however have no idea how to recompile it!! HELP!!

[Olav Baadsvik]

Hi,

Assuming you are using one of the HP-compilers
the option used to specify a particular
PARISC-version is +DA
Ex:
+DA1.1 for PARISC.1.1
+DA2.0 for PARISC2.0
+DA2.0W (gives 64-bit code)

By default the compilers compiles for the
same PARISC version the compiling machine has.

Also note that you do not have to compile
on a PARISC2.0 machine in order to generate
code for PARISC2.0

See the man-page for the compiler for
more info

Regards
Olav

[H.Merijn Brand (procura]

I don't think you can generate 2.0 or 2.0w on 1.1

HPc vs. GNU gcc (available as of 3.0.4)

+DA1.1 -> -pa-risc-1-1
+DA2.0 -> -pa-risc-2-0
+DA2.0w -> need the 64bit version of the compiler. No specific option

+DA1.1 is a bad choice to begin with. *IF* you are doing this to be backward compatible, use +DAportable instead

[Michael T. Harding]

Thanks guys... only one problem... I have never compiled anything before so I don't know any of the commands?

[Olav Baadsvik · Accepted solution]

Hi,

For a simple c-program the command to
compile for PARISC2.0 would be:

cc -o progname +DA2.0 file.c

If the program consists of more than one
file, add these file after file.c

Note that the +DA2.0 option is not needed
if you compile on a PARISC2.0 machine.
If you compile on a parisc1.1 manchine you
MUST use +DA2.0

Olav

[H.Merijn Brand (procura]

:)

And for gcc equivalent:

# gcc -o xx xx.c
# ./xx

[Michael T. Harding]

Guys,

Manny thnaks for your help... I've managed to do that. I have compiled it with the lower 1.1 RISC level as on the box the script originally failed on... however the script still fails due to incompatible hardware!?!?

[Olav Baadsvik]

Hi,

What is the output of the command:

file

and what is the exact error-message you get.

Olav

[Michael T. Harding]

Ignore me it's worked many many thnak both of you! Incedently what advantages and drawbacks would I get if I loaded the gnu compiler?

[H.Merijn Brand (procura]

Advantages gcc over HPc:
?? it's free
?? it has great warnings (realy)
?? it compiles GNU stuff without a wink
?? it is *very* indulgent, and supports more features than HPC

Advantage HPc over gcc:
?? it's objects are faster (avarage 26% with what we use here on HP-UX 11.00 2.0)
?? you get HP support
?? it fits better to the PA-RISC architecture