> If I use gcc -m64, I get an error. > > drkirkby@hpbox:~$ gcc -m64 test.c > cc1: error: unrecognized command line option "-m64" > > Can anyone tell me how to build 64-bit binaries with gcc on this machine? > > Dave GCC on HP-UX PA-RISC uses seperate compilers for 32 and 64 bit modes because 32 bit mode is SOM based and 64 bit mode is ELF based. You can get pre-built GCC compilers from http://www.hp.com/go/gcc and if you do then you would need to download and install 2 different compilers to generate both 32 and 64 bit code. The 32 bit compiler from this location installs as /opt/hp-gcc/bin/gcc and the 64 bit compiler installs as /opt/hp-gcc64/bin/gcc. If you are building GCC yourself you need to build GCC with a target like 'hppa64-hp-hpux11.23' to build a compiler that can generate 64 bit objects (but it will not be able to generate 32 bit objects). If you build with a target such as 'hppa2.0w-hp-hpux11.23' then you will get a compiler that can generate 32 bit objects but not 64 bit objects. Steve Ellcey sje@xxxxxxxxxx
