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Re: target/7156: Should not attempt to build 32/64 bi-archcompiler on sparc-*-solaris2.[789] if unsupported, bootstrap will fail
- From: Mark Mentovai <mark at moxienet dot com>
- To: <davem at gcc dot gnu dot org>, <gcc-bugs at gcc dot gnu dot org>,<gcc-gnats at gcc dot gnu dot org>
- Date: Fri, 28 Jun 2002 19:17:32 -0400
- Subject: Re: target/7156: Should not attempt to build 32/64 bi-archcompiler on sparc-*-solaris2.[789] if unsupported, bootstrap will fail
davem@gcc.gnu.org wrote:
> The build instructions are very precise in telling the user
> that they must "--disable-multilib" on the configure command
> line if their system does not support generation of 64-bit
> binaries.
>
> Several attempts were made close to the 3.1 release to automate this but
> none of them proved to be reliable and
> do the right thing in cross-compilation scenerios.
Something else must be wrong then if cross-compiling is an important
consideration: libjava refuses to configure itself when being cross-compiled
(as described in the PR).
gcc-3.1/libjava/configure:3922
if test "$cross_compiling" = yes; then
{ echo "configure: error: Cannot check for file existence when cross
compiling" 1>&2; exit 1; }
else
# ...
fi
Provided that this could be fixed, what seems like the correct solution
would be to check for the appropriate support packages (SUNWarcx and
SUNWcslx) and automatically disable multilib if both are not present only
when doing a native build, and retain the current behavior when doing a
cross build.
Mark