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When trying to keep track of various builds of GCC, it would be convenient to be able to store a
comment to be read back with -v. Since -v echoes the full configure command line, all that's required
is not rejecting an argument containing the desired comment.
I'll upload a patch which permits this. All it does is add a --comment option which does nothing; it's
just seventeen copies of the following, one for each configure file:
;; #Do nothing; this is just so that the comment will show up with -v.
There may be an easier way for maintainers to patch this, using auto-configuration; but I've never
run that. There are workarounds, such as embedding configuration information into directory names,
but this approach seems simpler.
A patched checking=yes build passed make check.
32> /opt2/gcc401-chk-all-4p/bin/g++ -v
Using built-in specs.
Configured with: /opt2/gcc-4.0.1-src/configure --enable-checking=all --prefix=/opt2/gcc401-chk-
all-4p/ --enable-languages=c,c++ --comment=PalmSource checking=all build by Flash Sheridan
2005-08-11 via distcc. Patches 20161-8277, 22508-2005-08-00326, 22600-9330,
22604-2005-08-00334, plus a local patch to seventeen versions of configure to allow this comment.
Thread model: posix
gcc version 4.0.1
Created attachment 9508 [details]
One thing you could do is replace the place where the configure options where, unless you want the
configure options also.
Use --with-comment instead.
Thanks, --with-comment seems to work, but it doesn't seem to be documented. Grepping both the
documentation and source folder didn't find it; Googling for it turned it up in the context of MySQL, but
not GCC. So I'm re-titling and reopening the bug. I think the option should be listed in --help, but it
certainly needs to be documented somewhere.
The main reason why it is documented, it is not a real configure option. But we (autoconf) ignores
unknown --with options.