Questions about GCC

[Vadim Yezhakov]

1. Can i use shared libraries compiled on aCC in binaries compiled on GCC?
2.Can i compile 64-bit objects on GCC?

[H.Merijn Brand (procura · Accepted solution]

1. Yes
2. What architecture?

on PA-RISC, you need two gcc compilers: one for 32bit generation, and one for 64bit generation. They do not mix.

on Itanium, there is only one compiler, which is able to generate both.

To see all available options:

# gcc -v --help

Enjoy, Have FUN! H.Merijn

[Arunvijai_4]

Hi Vadim,

1. Can i use shared libraries compiled on aCC in binaries compiled on GCC?

Yes, You can do it.

2. Can i compile 64-bit objects on GCC?

Ofcourse, Yes.

You need to have a 64 bit GCC for this. You can download from

http://h21007.www2.hp.com/dspp/tech/tech_TechSoftwareDetailPage_IDX/1,1703,7663,00.html

-Arun

[Muthukumar_5]

1. Can i use shared libraries compiled on aCC in binaries compiled on GCC?

You can use that.

2.Can i compile 64-bit objects on GCC?

Based on the platform you can use. See model command output to see whether you machine is PA-RISC or Itanium.

64 bit gcc compiler is available for PA-RISC to support 64 bit.

--
Muthu

[Arunvijai_4]

Hello Vadim,

To compile 64 bit in GCC,

PA-RISC, you can install 64 bit compiler,

/usr/local/gcc64/bin/gcc as your compiler.

IA64, -mlp64 with GCC.

-Arun

[Vadim Yezhakov]

And one more question:
function names in GCC and aCC objects are different.
I must use extern "C" directive or i can use some key in compiler?

[Arunvijai_4]

Hi Vadim,

You can use Key-in Directives for the portability.

-Arun

[Arunvijai_4]

Hi Vadim,

You can also check these threads for more information,

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=36827
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=726526

-Arun

[Steve Ellcey]

Just to clarify a point, when you say GCC do you mean the GCC C compiler only? Mixing GCC C code with aCC is fine but you cannot mix code compiled with the g++ compiler with code compiled with the aCC compiler. I.e. you can only use one C++ compiler but you can use it with code compiled with either the GNU or HP C compilers or both.

GCC (all uppercase) is usually interpreted as the GNU Compiler Collection, which includes both C and C++ compilers. gcc (lowercase) is the GCC C language compiler.

[Vadim Yezhakov]

I mean just g++ compiler. And code, compiled by aCC is C++ too.