* crosscompiler for ia64
@ 2007-12-14 21:01 Eduardo Martinez Pardeiro
2007-12-15 0:39 ` Brian Dessent
0 siblings, 1 reply; 3+ messages in thread
From: Eduardo Martinez Pardeiro @ 2007-12-14 21:01 UTC (permalink / raw)
To: gcc-help
Hello,
I want to build a crosscompiler from i486 to ia64-hp-hpux11.23.
I know in configure have to specify --target=ia64-hp-hpux11.23, but
only with this, i have a mistake. What more have i do?
thanks
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: crosscompiler for ia64
2007-12-14 21:01 crosscompiler for ia64 Eduardo Martinez Pardeiro
@ 2007-12-15 0:39 ` Brian Dessent
2007-12-15 15:49 ` Eduardo Martinez Pardeiro
0 siblings, 1 reply; 3+ messages in thread
From: Brian Dessent @ 2007-12-15 0:39 UTC (permalink / raw)
To: Eduardo Martinez Pardeiro; +Cc: gcc-help
Eduardo Martinez Pardeiro wrote:
> I want to build a crosscompiler from i486 to ia64-hp-hpux11.23.
> I know in configure have to specify --target=ia64-hp-hpux11.23, but
> only with this, i have a mistake. What more have i do?
The problem that you're running into is that gcc is just the compiler,
it is not the C library. If you try to build a cross compiler without a
libc (i.e. just using what comes with gcc) you will get something that
is not very useful as it can't link any programs -- which also means it
won't be able to build libgcc or libstdc++ or any of the other required
support libraries, let alone a "hello world" C program. This is
probably not what you want.
One way to supply these items is with a sysroot. Take the relevant
items from the target system (e.g. /usr/include and /usr/lib or
whereever they are located) and reproduce them in the same tree
structure in some subdirectory on the cross host. Then supply the top
of that location as --with-sysroot=/foo/bar when configuring the cross
compiler. If you don't have an appropriate target system to get a copy
of these files from then you're in a bit of a pickle. If the target is
open source you can use a more complicated process to bootstrap them
from source, but when you're targeting a proprietary target like HP-UX
there's really no choice but to copy them from the target system.
Brian
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: crosscompiler for ia64
2007-12-15 0:39 ` Brian Dessent
@ 2007-12-15 15:49 ` Eduardo Martinez Pardeiro
0 siblings, 0 replies; 3+ messages in thread
From: Eduardo Martinez Pardeiro @ 2007-12-15 15:49 UTC (permalink / raw)
To: gcc-help
Thanks Brian. I'll try to do it. Is neccesary to recompile binutils
with hpux target? I read somewhere that,but i don't know if it's
neccesary
> The problem that you're running into is that gcc is just the compiler,
> it is not the C library. If you try to build a cross compiler without a
> libc (i.e. just using what comes with gcc) you will get something that
> is not very useful as it can't link any programs -- which also means it
> won't be able to build libgcc or libstdc++ or any of the other required
> support libraries, let alone a "hello world" C program. This is
> probably not what you want.
>
> One way to supply these items is with a sysroot. Take the relevant
> items from the target system (e.g. /usr/include and /usr/lib or
> whereever they are located) and reproduce them in the same tree
> structure in some subdirectory on the cross host. Then supply the top
> of that location as --with-sysroot=/foo/bar when configuring the cross
> compiler. If you don't have an appropriate target system to get a copy
> of these files from then you're in a bit of a pickle. If the target is
> open source you can use a more complicated process to bootstrap them
> from source, but when you're targeting a proprietary target like HP-UX
> there's really no choice but to copy them from the target system.
>
> Brian
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2007-12-14 21:01 crosscompiler for ia64 Eduardo Martinez Pardeiro
2007-12-15 0:39 ` Brian Dessent
2007-12-15 15:49 ` Eduardo Martinez Pardeiro
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