manual merge

1 files changed, 65 insertions, 23 deletions

diff --git a/open_issues/gcc.mdwn b/open_issues/gcc.mdwn
index f0f2af51..a3b3a2d2 100644
--- a/open_issues/gcc.mdwn
+++ b/open_issues/gcc.mdwn
@@ -64,11 +64,15 @@ testsuite.
 
         Looks OK.
 
+      * fe5ef4a01870545d0344e670cd528ad096ebab1d
+
+        OK.
+
 
 # Configuration
 
-Last reviewed up to the [[Git mirror's 7c9f953a01d23c6b6885dc908d5b1dba8009efd4
-(2011-07-18) sources|source_repositories/gcc]].
+Last reviewed up to the [[Git mirror's 3d83581faf4eaf52c1cf52cc0d11cc7dd1264275
+(2011-09-05) sources|source_repositories/gcc]].
 
 <http://gcc.gnu.org/install/configure.html> has documentation for the
 `configure` switches.
@@ -95,7 +99,7 @@ Last reviewed up to the [[Git mirror's 7c9f953a01d23c6b6885dc908d5b1dba8009efd4
   * [[`libmudflap`|libmudflap]].
 
   * Might [`-fsplit-stack`](http://nickclifton.livejournal.com/6889.html) be
-    worthwhile w.r.t. our multithreaded libraries?
+    worthwhile w.r.t. our [[multithreaded|multithreading]] libraries?
 
       * Also see `libgcc/config/i386/morestack.S`: comments w.r.t
         `TARGET_THREAD_SPLIT_STACK_OFFSET`; likely needs porting.
@@ -125,8 +129,6 @@ Last reviewed up to the [[Git mirror's 7c9f953a01d23c6b6885dc908d5b1dba8009efd4
 
   * `--enable-checking`
 
-  * `--enable-build-with-cxx`
-
   * `--enable-linker-build-id`
 
   * `--enable-gnu-unique-object`
@@ -170,32 +172,59 @@ Last reviewed up to the [[Git mirror's 7c9f953a01d23c6b6885dc908d5b1dba8009efd4
 
     `check_effective_target_pie` should include `*-*-gnu*`, too.
 
-  * [high] 9b0fef97f18ed5c9f2f9a361262fbb450f2b0b53
+  * [low] [[toolchain/cross-gnu]] toolchain bootstrap vs. `fenv.h` in libgcc's
+    libbid:
+
+        [...]/xgcc [...] -DIN_LIBGCC2 -fbuilding-libgcc [...] -Dinhibit_libc [...] -o bid_decimal_globals.o [...] -c [...]/libgcc/config/libbid/bid_decimal_globals.c
+        [...]/libgcc/config/libbid/bid_decimal_globals.c:47:18: fatal error: fenv.h: No such file or directory
+        compilation terminated.
+        make[1]: *** [bid_decimal_globals.o] Error 1
+        make[1]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/gcc.obj/i686-pc-gnu/libgcc'
+        make: *** [all-target-libgcc] Error 2
+
+    See threads at [[!message-id
+    "AANLkTinY1Cd4_qO_9euYJN8zev4hdr7_ANpjNG+yGRMn@mail.gmail.com"]],
+    [[!message-id "20110328225532.GE5293@synopsys.com"]], [[!message-id
+    "4D52D522.1040804@gmail.com"]].  Can simply configure the first GCC with
+    `--disable-decimal-float`.
 
-    Very likely needed for us, too.  Patch on gcc-patches and in
-    *config/extra_parts* branch.
+    Alternatively, can we use `#ifndef inhibit_libc` for this (these?) file(s)?
+    See `generic-nonstrack.c`, for example.  The latter (and also
+    `generic-morestack-thread.c`) also has a nice explanation of `inhibit_libc`
+    which could be centralized at one place, for example definition of
+    `inhibit_libc`.
+
+  * [low] [[toolchain/cross-gnu]]
+
+        The directory that should contain system headers does not exist:
+          /media/boole-data/thomas/tmp/gnu-0/sys_root/usr/include
+        make[2]: *** [stmp-fixinc] Error 1
+        make[2]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/gcc.obj/gcc'
+        make[1]: *** [all-gcc] Error 2
+        make[1]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/gcc.obj'
+
+    `mkdir` the directory for now, but what is really going on?  GCC has *use
+    `/usr/include` patch*, but glibc still installs into `/include/`?
 
 
 # Build
 
 Here's a log of a GCC build run; this is from our [[Git repository's
-09ba3e78c07654e08c8bef82761dbbb26d3c00c9 (2011-07-18)
+93608b32ee627438dbe8a1844254bf8c305c5dc1 (2011-09-05)
 sources|source_repositories/gcc]], run on kepler.SCHWINGE and coulomb.SCHWINGE.
 
     $ export LC_ALL=C
     $ (cd ../master/ && contrib/gcc_update --touch)
     $ ../master/configure --prefix="$PWD".install SHELL=/bin/dash CC=gcc-4.6 CXX=g++-4.6 2>&1 | tee log_build
     [...]
-    $ LIBRARY_PATH=$(echo /usr/lib/i386*-gnu) make 2>&1 | tee log_build_
+    $ make 2>&1 | tee log_build_
     [...]
 
 Different hosts may default to different shells and compiler versions; thus
 harmonized.
 
-Setting `LIBRARY_PATH` is needed until [[!debbug 629819]] is resolved.
-
-This takes up around 2.3 GiB, and needs roughly 2.75 h on kepler.SCHWINGE, and
-11 h on coulomb.SCHWINGE.
+This takes up around 2.9 GiB, and needs roughly 2.75 h on kepler.SCHWINGE and
+13.25 h on coulomb.SCHWINGE.
 
 
 ## Analysis
@@ -254,6 +283,9 @@ This takes up around 2.3 GiB, and needs roughly 2.75 h on kepler.SCHWINGE, and
         -cat ../../hurd/gcc/config/i386/pmm_malloc.h > mm_malloc.h
         +cat ../../hurd/gcc/config/i386/gmm_malloc.h > mm_malloc.h
 
+    Comes from `gcc/config.gcc`: `i386/t-pmm_malloc` vs. `i386/t-gmm_malloc`
+    for `i[34567]86-*-linux*` vs. `i[34567]86-*-*`.
+
   * *libgomp*
 
       * `libgomp/config/linux/`, `libgomp/config/linux/x86`
@@ -348,13 +380,11 @@ This takes up around 2.3 GiB, and needs roughly 2.75 h on kepler.SCHWINGE, and
 
 # Install
 
-    $ LIBRARY_PATH=$(echo /usr/lib/i386*-gnu) make install 2>&1 | tee log_install
+    $ make install 2>&1 | tee log_install
     [...]
 
-Setting `LIBRARY_PATH` is needed until [[!debbug 629819]] is resolved.
-
-This takes up around 0.6 GiB, and needs roughly 4 min on kepler.SCHWINGE, and
-35 min on coulomb.SCHWINGE.
+This takes up around 630 MiB, and needs roughly 4 min on kepler.SCHWINGE and 35
+min on coulomb.SCHWINGE.
 
 
 ## Analysis
@@ -374,17 +404,29 @@ This takes up around 0.6 GiB, and needs roughly 4 min on kepler.SCHWINGE, and
 
 <http://gcc.gnu.org/install/test.html>
 
-    $ LIBRARY_PATH=$(echo /usr/lib/i386*-gnu) make -k check 2>&1 | tee log_check
+Testing on GNU/Hurd is blocked on
+[[fork_mach_port_mod_refs_ekern_urefs_owerflow]].
+
+    $ make -k check 2>&1 | tee log_check
     [...]
 
-Setting `LIBRARY_PATH` is needed until [[!debbug 629819]] is resolved.
+This needs roughly TODO min on kepler.SCHWINGE and TODO min on
+coulomb.SCHWINGE.
 
-Testing on GNU/Hurd is blocked on
-[[fork_mach_port_mod_refs_ekern_urefs_owerflow]].
+    $ ssh kepler.SCHWINGE 'cd tmp/source/gcc/ && sed < hurd/master.build/gcc/TODO -e "s%\(/media/data\)\?${PWD}%[...]%g"' > open_issues/gcc/sum_linux
+    $ ssh coulomb.SCHWINGE 'cd tmp/gcc/ && sed < hurd/master.build/gcc/TODO -e "s%\(/media/erich\)\?${PWD}%[...]%g"' > open_issues/gcc/sum_hurd
+
+Comparing the results files, [[sum_linux]] to [[sum_hurd]]:
+
+    $ diff -u -F ^Running open_issues/gcc/sum_linux open_issues/gcc/sum_hurd > open_issues/gcc/sum.diff
+
+[[open_issues/gcc/sum.diff]].
 
 
 ## Analysis
 
+TODO.
+
 
 # Specific Languages