diff options
Diffstat (limited to 'open_issues/gcc.mdwn')
| -rw-r--r-- | open_issues/gcc.mdwn | 88 |
1 files changed, 48 insertions, 40 deletions
diff --git a/open_issues/gcc.mdwn b/open_issues/gcc.mdwn index 6f5d1eac..961b3ae6 100644 --- a/open_issues/gcc.mdwn +++ b/open_issues/gcc.mdwn @@ -1,4 +1,4 @@ -[[!meta copyright="Copyright © 2008, 2009, 2010 Free Software Foundation, +[[!meta copyright="Copyright © 2007, 2008, 2009, 2010 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable @@ -11,29 +11,46 @@ is included in the section entitled [[!tag open_issue_gcc]] -Includes an older variant of [[boehm-gc]] with own patches, etc. +Here's what's to be done for maintaining GCC. -For GCC trunk: +Apart from the target-specific configuration machinery, there shouldn't be any +major differences within GCC between the GNU/Hurd and GNU/Linux ports, for +example. Especially all the compiler magic is all the same. -Debian package has patches (for 4.3). Some have been forwarded upstream. (And -have been ignored.) [[Thomas_Schwinge|tschwinge]] is working on getting them -integrated. - * [\[meta-bug\] bootstrap bugs for - \*-gnu\*](http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21824) +# [[General information|/gcc]] - * [build system: gcc\_cv\_libc\_provides\_ssp and - NATIVE\_SYSTEM\_HEADER\_DIR](http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html) - * [-fstack-protector shouldn't use TLS in freestanding - mode](http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29838) +# [[Sources|source_repositories/gcc]] + + +## Boehm GC + +GCC includes an own variant of [[/Boehm_GC]] that is based on an upstream +version, but with own patches, etc. This is used for Java. (There are patches +(apparently not committed) that GCC itself can use it, too: +<http://gcc.gnu.org/wiki/Garbage_collection_tuning>.) + +Patches to GCC's fork should be contributed back to upstream [[/Boehm_GC]]. + +[[tschwinge]] reviewed (but only briefly for large parts) the differences on +2010-11-17, based on 5be7963446247204245c954641290f0e5ce238c6 (2010-10-28) of +[[source_repositories/GCC]] and for [[source_repositories/Boehm_GC]] CVS HEAD +sources from 2010-11-16, converted to Git: +9abb37b2e581b415bb1f482085891a289c2c0be1. + +[[tschwinge]] reviewed the Debian GCC Boehm GC changes, compared them to the +upstream code, and put it into the local *hurd/boehm-gc/config_backport* +branch, planning to submit it to gcc-patches after testing with the GCC +[[testsuite]]. - * [Tool chain configuration: GNU/\* sharing stuff with - GNU/Linux](http://gcc.gnu.org/ml/gcc/2007-11/msg00289.html) +# Configuration +Last checked against b8ba44e77a9fdde48ce0b7c6792736996704501e (2010-11-17). -Additionally: +<http://gcc.gnu.org/install/configure.html> has documentation for the +`configure` switches. * Configure fragments that have `*linux*` cases might/should often contain those for us (and GNU/k*BSD) as well. @@ -50,16 +67,9 @@ Additionally: * [[`libmudflap`|libmudflap]]. - * [[Boehm_GC]]. - * Might [`-fsplit-stack`](http://nickclifton.livejournal.com/6889.html) be worthwhile w.r.t. our multithreaded libraries? - ---- - -<http://gcc.gnu.org/install/configure.html> - * `--enable-languages=[...]` GNAT is not yet ported / bootstrapped? @@ -78,7 +88,8 @@ Additionally: * `--enable-decimal-float`, `--enable-fixed-point`, `--with-long-double-128` - `configure: WARNING: decimal float is not supported for this target, ignored` + `configure: WARNING: decimal float is not supported for this target, + ignored` * `--enable-linker-build-id` @@ -92,27 +103,24 @@ Additionally: [[IFUNC]] ---- -Here's a log of a GCC build run; this is from -f07666e1203a50ae445025050b7e12311db6bbd0 (2010-11-04) -[[sources|source_repositories/gcc]], run on kepler.SCHWINGE and grubber. +# [[Testsuite]] - $ export LC_ALL=C - $ ../hurd/configure --prefix="$PWD".install 2>&1 | tee log_build - [...] - $ make SHELL=/bin/bash 2>&1 | tee log_build_ - [...] -(kepler.SCHWINGE defaults to using /bin/sh, grubber to /bin/bash; thus -harmonized.) +# TODO -On grubber, this takes roughly TODO minutes. +Debian's GCC package has Hurd-specific patches. Some have been forwarded +upstream (and have been ignored). [[Thomas_Schwinge|tschwinge]] is working on +getting them integrated. - $ diff -wu <(ssh kepler.SCHWINGE 'cd tmp/source/gcc/hurd.build/ && cat log_build* | sed -e "s%${PWD}%[...]%g"') <(ssh grubber 'cd tmp/gcc/hurd.build/ && cat log_build* | sed "s%${PWD}%[...]%g"') > open_issues/gcc/log_build-diff + * [\[meta-bug\] bootstrap bugs for + \*-gnu\*](http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21824) -[[log_build-diff]]. + * [build system: gcc\_cv\_libc\_provides\_ssp and + NATIVE\_SYSTEM\_HEADER\_DIR](http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html) + + * [-fstack-protector shouldn't use TLS in freestanding + mode](http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29838) -Build failure in boehm-gc. [[Working on this|boehm-gc]]; will need to backport -upstream patches / also have a look at Debian patches, and [[boehm_gc]]. Then -resume here. + * [Tool chain configuration: GNU/\* sharing stuff with + GNU/Linux](http://gcc.gnu.org/ml/gcc/2007-11/msg00289.html) |