#14296: Force consistency of $LD and $AS with $CC
----------------------------+-----------------------------------------------
Reporter: jdemeyer | Owner: GeorgSWeber
Type: defect | Status: new
Priority: major | Milestone: sage-5.9
Component: build | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
----------------------------+-----------------------------------------------
Description changed by jdemeyer:
Old description:
> Sometimes, a system-wide GCC can be configured to use a different linker
> than simply `ld` (using `configure --with-ld=/path/to/linker). The path
> to the linker used by GCC can be discovered by
> {{{
> buildbot@mark:~$ gcc -print-file-name=ld
> /usr/local/binutils-2.22/sparc-SunOS-ultrasparc3-gcc-4.6.2-without-
> zlib/bin/ld
> }}}
>
> Unfortunately, there can be an inconsistency between `$LD` and the linker
> used by GCC, leading to build failures. We should do the following:
> 1. If `$LD` is unset, set it to `$CC -print-file-name=ld` by default
> instead of `ld`.
> 2. If `$LD` is set and the value differs from `$CC -print-file-name=ld`,
> force building of the GCC spkg (define these values to be equal if the
> output of `command -v VALUE` is equal).
>
> Take care to support the case that `$CC` doesn't support the `-print-
> file-name` option.
>
> ------
>
> Analogously, the same for the assembler `$AS`.
New description:
Sometimes, a system-wide GCC can be configured to use a different linker
than simply `ld` (using `configure --with-ld=/path/to/linker`). The path
to the linker used by GCC can be discovered by
{{{
buildbot@mark:~$ gcc -print-file-name=ld
/usr/local/binutils-2.22/sparc-SunOS-ultrasparc3-gcc-4.6.2-without-
zlib/bin/ld
}}}
Unfortunately, there can be an inconsistency between `$LD` and the linker
used by GCC, leading to build failures. We should do the following:
1. If `$LD` is unset, set it to `$CC -print-file-name=ld` by default
instead of `ld`.
2. If `$LD` is set and the value differs from `$CC -print-file-name=ld`,
force building of the GCC spkg (define these values to be equal if the
output of `command -v VALUE` is equal).
Take care to support the case that `$CC` doesn't support the `-print-file-
name` option.
------
Analogously, the same for the assembler `$AS`.
--
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14296#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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