gcc: +DD64: No such file or directory

[devshlom]

Hi,
I'm trying to compile my executable with +DD64 (we are using gcc compiler) but I get the following msg:
"gcc: +DD64: No such file or directory"

what do I miss? how can I compile 64bit app with gcc?

tx,
s

[James R. Ferguson]

Hi:

The gcc compiler options are different from those used by the native HP-UX C/aC++ compiler.

Have a look here:

For PA-RISC:

http://gcc.gnu.org/onlinedocs/gcc/HPPA-Options.html#HPPA-Options

For Itanium:

http://gcc.gnu.org/onlinedocs/gcc/IA_002d64-Options.html#IA_002d64-Options

Regards!

...JRF>>>

[devshlom]

hi JRF,
I work on pa-risk, but even when I tried to specify -mpa-risc-2-0 to the gcc, it seems that it doesn't work.
1. when I'm runing "file " I don't get the 64 or LP64 indication
2. my program prints "sizeof(long)" which should return 8 in case of 64bit application, but it returns 4

what do you suggest?
tx,
s

[Steven Schweda]

> [...] which should return 8 in case of
> 64bit application, [...]

That's one opinion.

> what do you suggest?

Use "long long" if you want "long long"?

Which option did you specify which would make
"long" 64 bits (which would break all kinds
of existing code)?

[Dennis Handly · Accepted solution]

>I tried to specify -mpa-risc-2-0 to the gcc, it seems that it doesn't work.

This is still 32 bit mode. Just PA2.0 vs PA1.1.

If you want to compile with 64 bit on PA, you need to download HP's gcc compiler, or build your own. (There are two for PA.)
http://www.hp.com/go/gcc

>>"sizeof(long)" which should return 8 in case of 64bit application

Correct, for LP64.

>Steven: That's one opinion.

No, that's a HP-UX fact.

>Which option did you specify which would make "long" 64 bits (which would break all kinds of existing code)?

That's why it is called "porting" to 64 bit.