* [patch] Avoid linker errors with --help= option. (PR 31353)
@ 2007-03-26 2:34 Brooks Moses
2007-03-30 17:39 ` Mark Mitchell
0 siblings, 1 reply; 2+ messages in thread
From: Brooks Moses @ 2007-03-26 2:34 UTC (permalink / raw)
To: gcc-patches
[-- Attachment #1: Type: text/plain, Size: 1277 bytes --]
:ADDPATCH other:
Currently, the handler for --help= in gcc.c creates a dummy file name to
pass to the various cc1, f951, and other subprocesses. This seems to
fulfill its purpose of getting the later parts of gcc.c to call the
various subprocesses, but it also means that the linker gets called with
nothing to link. The result is that the output of "gcc --help=target"
(for example) ends with a linker error message.
The attached patch turns off the linker in the case where --help= has
been specified. In so doing, it gives meaning to the various numbers
assigned to print_subprocess_help -- it's already assigned 2 in the
--help= handler, and 1 in the --target-help handler, but those numbers
are never checked. I presume that something like this was the intended
use, however.
-----------------------------------------------------------------
2007-03-25 Brooks Moses <brooks.moses@codesourcery.com>
PR other/31353
* gcc.c (main): Do not run the linker if
print_subprocess_help indicates that it shouldn't be
run.
-----------------------------------------------------------------
Tested with a bootstrap (and a few minutes of "make check", to confirm
that this isn't interfering with compiling code) on i686-pc-linux-gnu.
Ok for trunk?
- Brooks
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Index: gcc.c
===================================================================
--- gcc.c (revision 123170)
+++ gcc.c (working copy)
@@ -6692,7 +6692,7 @@
/* Run ld to link all the compiler output files. */
- if (num_linker_inputs > 0 && error_count == 0)
+ if (num_linker_inputs > 0 && error_count == 0 && print_subprocess_help < 2)
{
int tmp = execution_count;
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [patch] Avoid linker errors with --help= option. (PR 31353)
2007-03-26 2:34 [patch] Avoid linker errors with --help= option. (PR 31353) Brooks Moses
@ 2007-03-30 17:39 ` Mark Mitchell
0 siblings, 0 replies; 2+ messages in thread
From: Mark Mitchell @ 2007-03-30 17:39 UTC (permalink / raw)
To: Brooks Moses; +Cc: gcc-patches
Brooks Moses wrote:
> 2007-03-25 Brooks Moses <brooks.moses@codesourcery.com>
>
> PR other/31353
> * gcc.c (main): Do not run the linker if
> print_subprocess_help indicates that it shouldn't be
> run.
:REVIEWMAIL: OK
Thansk,
--
Mark Mitchell
CodeSourcery
mark@codesourcery.com
(650) 331-3385 x713
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2007-03-26 2:34 [patch] Avoid linker errors with --help= option. (PR 31353) Brooks Moses
2007-03-30 17:39 ` Mark Mitchell
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