From 5028e035ddcc9c6c58707d42eb161a80f2012c16 Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <thomas@schwinge.name>
Date: Wed, 10 Nov 2010 19:53:09 +0100
Subject: open_issues/gcc: WIP.

---
 open_issues/boehm-gc.mdwn |  2 +-
 open_issues/gcc.mdwn      | 66 ++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 66 insertions(+), 2 deletions(-)

diff --git a/open_issues/boehm-gc.mdwn b/open_issues/boehm-gc.mdwn
index 4979f400..64730dc8 100644
--- a/open_issues/boehm-gc.mdwn
+++ b/open_issues/boehm-gc.mdwn
@@ -12,7 +12,7 @@ License|/fdl]]."]]"""]]
 
 `grubber:~tschwinge/tmp/boehm-gc/git/`.
 
-It is used by GCC, for example.
+It is used by [[GCC]], for example.
 
 [[tschwinge]] reviewed its GNU/Hurd port / configuration on 2010-11-10,
 based on CVS HEAD sources from 2010-11-04, converted to Git:
diff --git a/open_issues/gcc.mdwn b/open_issues/gcc.mdwn
index ab51c8c4..6f5d1eac 100644
--- a/open_issues/gcc.mdwn
+++ b/open_issues/gcc.mdwn
@@ -9,7 +9,9 @@ Sections, no Front-Cover Texts, and no Back-Cover Texts.  A copy of the license
 is included in the section entitled
 [[GNU Free Documentation License|/fdl]]."]]"""]]
 
-[[!tag open_issue_porting open_issue_gcc fixed_in_debian]]
+[[!tag open_issue_gcc]]
+
+Includes an older variant of [[boehm-gc]] with own patches, etc.
 
 For GCC trunk:
 
@@ -52,3 +54,65 @@ Additionally:
 
   * 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?
+
+  * `--enable-frame-pointer`
+
+    `gcc/configure.ac`: `enable_frame_pointer=no`
+
+  * `--with-dwarf2`?
+
+  * `--enable-werror`
+
+  * `--enable-checking`
+
+  * `--enable-build-with-cxx`
+
+  * `--enable-decimal-float`, `--enable-fixed-point`, `--with-long-double-128`
+
+    `configure: WARNING: decimal float is not supported for this target, ignored`
+
+  * `--enable-linker-build-id`
+
+  * `--enable-gnu-unique-object`
+
+  * `--enable-lto`, `--enable-gold`
+
+    [[binutils_gold]]
+
+  * `--enable-indirect-function`
+
+    [[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.
+
+    $ 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.)
+
+On grubber, this takes roughly TODO minutes.
+
+    $ 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
+
+[[log_build-diff]].
+
+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.
-- 
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