RE: build cross gcc for ppc-linux

RE: build cross gcc for ppc-linux

[Rupert Wood]

Harry Lin wrote:	

> On host : i686-pc-linux-gnu (Redhat 7.1)
> to build powerpc-linux-gnu cross gcc 3.0.4, with binutils 2.12
> ./configure --target=powerpc-ibm-linux-gnu --with-newlib

You shouldn't use newlib if you're targeting a specific OS; you should
install or build headers and libraries specific to the OS. In this case,
you should build glibc for your target or extract the headers and basic
libraries from a binary PPC gnu/linux distribution. I'm afraid I don't
know the specifics of doing this; you might have to build a powerpc-elf
cross-compiler using newlib and then use that to build glibc for
powerpc-linux-gnu, or there might be an easier way (integrate glibc into
the sources tree and build in parallel?) but I'm not sure.

In addition to glibc, you'll also need the linux/ and asm/ headers from
the kernel source.

> seeing errors of files not exist while compiling in rs6000/linux.h
> about <signal.h> and <sys/ucontext.h>, while there are such files
> right there under /usr/include.

These headers belong to the compile host and should not be used for the
cross target. In you case, it's using only the headers provided with
newlib.

Good luck,
Rup.

build cross gcc for ppc-linux

[Harry Lin]

On host : i686-pc-linux-gnu (Redhat 7.1)
to build powerpc-linux-gnu cross gcc 3.0.4, with binutils 2.12
./configure --target=powerpc-ibm-linux-gnu --with-newlib

seeing errors of files not exist while compiling in rs6000/linux.h about 
<signal.h> and <sys/ucontext.h>, while there are such files right there under 
/usr/include.

searching the archieves of gcc mailing lists, there were reports of such 
problems, but no one posted answers

although i can get into rs6000/linux.h to try to hack around, i bet this is a 
problem that must have been fixed gracefully,

any one knows sth about this....Thanx

Harry