Re: Building arm-elf cross under GCC 3.0.4 on HP-UX 11.00

[Kai Ruottu <kai dot ruottu at luukku dot com>]

Albert Chin wrote:
> 
> I'm attempting to build an arm-elf cross-compiler with GCC 3.0.4 under
> HP-UX 11.00. I've built binutils and a bootstrap gcc as follows:
>
>   $ PATH=$PATH:/tmp/armgcc/arm-elf/bin CC=/opt/TWWfsw/gcc304/bin/gcc \

 What on earth this PATH-setting is doing here?

> When trying to build newlib 1.9.0:
> 
>   $ gzip -dc newlib-1.9.0.tar.gz | tar xf -
>   $ cd newlib-1.9.0
>   $ PATH=$PATH:/tmp/armgcc/arm-elf/bin ./configure --target=arm-elf \
>   --prefix=/tmp/armgcc
>   *** This configuration is not supported in the following subdirectories:
>        target-libgloss
>       (Any other directories should still work fine.)
>   Created "Makefile" in /opt/build/newlib-1.9.0 using "mh-frag"
>   /tmp/armgcc304/lib/gcc-lib/arm-elf/3.0.4/../../../../arm-elf/bin/ld:
>   cannot open crt0.o: No such file or directory
>   collect2: ld returned 1 exit status
>   *** The command 'gcc -o conftest -g -O2   conftest.c' failed.

 When trying to compile and link a native app for HP-UX, the arm-elf-targeted
'ld' will be found first because of the PATH-setting and a pure mess is the
expected result...
 
> Any ideas? I believe that crt0 is part of newlib but if I cannot built
> newlib, how do I get crt0?

 Don't ever use PATH for setting search paths for GCC, see the default search
paths using 'gcc -print-search-dirs' etc., and add more directories there using
the 'GCC_EXEC_PREFIX'... Consult your GCC-manual about these things : "Environment
Settings for GCC" or something there...

 If you can build the 'arm-elf' targeted GCC yourself, there is no reason to not
use the default '$prefix/$target/bin' for the target binutils, so that the GCC
and the binutils configured using them will work perfectly together... Then even
the GCC_EXEC_PREFIX is not necessary.

 I remember the messing with PATH being very common among the HP-UX users, meanwhile
all the other GCC-users never use it to point to the GNU binutils...  So there must
be some FAQ or something the HP-UX-users all have read, and it saying that the GNU
binutils must be pointed with PATH or something... Any clues about where you got
this idea?

Cheers, Kai


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