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[[!meta copyright="Copyright © 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
2015 Free Software Foundation, Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
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_gcc]]
Here's what's to be done for maintaining GCC.
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.
[[!toc levels=2]]
# [[General information|/gcc]]
# [[Sources|source_repositories/gcc]]
# Configuration
<!--
git checkout reviewed
git diff --patience --stat=$COLUMNS,$COLUMNS --patch --src-prefix=./ --dst-prefix=./ --find-renames --ignore-space-change ..upstream/master | awk '/^diff/ { c = $0; } /^@@/ { print c; } { print; }' | less
-i
/^---.*/([^.]*|.*\.texi.*|[^/]*gnu[^/]*)$|hurd|linux|nacl|nptl|glibc|gs:
-->
Last reviewed up to the [[Git mirror's 3a930d3fc68785662f5f3f4af02474cb21a62056
(2013-06-06) sources|source_repositories/gcc]].
<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.
* `configure.ac`
* `libstdc++-v3`
* `configure.host`
`abi_baseline_pair` etc. setting. `config/abi/post/*-linux-gnu`.
TODO.
* `config/os/gnu-linux`
Is used for all GNU systems, as per `configure.host`. Should
rename to `gnu-user` to reflect this? TODO.
* `gcc/acinclude.m4`:`gcc_GAS_FLAGS`: always pass `--32` to assembler for
x86 Linux. (Why?)
* `lib-prefix.m4` (present twice in GCC sources) contains one remaining
`linux`-only case.
* `libjava`
TODO:
classpath/include/jni_md-x86-linux-gnu.h
See below (`log_build`).
Makefile.am:## _GNU_SOURCE defined for some Linux builds. It doesn't hurt to
Makefile.am:## always define it. Some systems, including Linux, need
Makefile.am:# certain linuxthread functions get linked:
Makefile.am:## This is specific to Linux/{Free,Net,Open}BSD/Hurd and perhaps few others.
Makefile.am: $(mkinstalldirs) $(DESTDIR)$(SDK_INCLUDE_DIR)/linux; \
Makefile.am: $(DESTDIR)$(SDK_INCLUDE_DIR)/linux); \
Makefile.am: $(DESTDIR)$(SDK_INCLUDE_DIR)/linux/$$headername.h; \
classpath/NEWS: the epoll notification mechanism on Linux 2.6.
classpath/config.rpath: linux* | k*bsd*-gnu)
classpath/config.rpath: gnu* | linux* | k*bsd*-gnu)
classpath/config.rpath: linux*oldld* | linux*aout* | linux*coff*)
classpath/config.rpath: linux* | k*bsd*-gnu)
classpath/configure.ac: *linux*)
classpath/configure.ac: target_os=linux-gnu
classpath/configure.ac: AC_MSG_WARN(no, using x86-linux-gnu)
classpath/doc/cp-vmintegration.texinfo:has been primarily tested against Linux and lacks garbage collections, a
classpath/doc/cp-vmintegration.texinfo:Linux and Windows 2000. As of June, 2004, it does not appear that ORP
classpath/doc/cp-vmintegration.texinfo:This is a free Java Virtual Machine that is being developed on GNU/Linux
classpath/doc/cp-vmintegration.texinfo:Runs on the x86 and PowerPC architectures, on the AIX, Linux, and Mac
classpath/gnu/classpath/SystemProperties.java: && "Linux".equals(defaultProperties.get("os.name")))
classpath/gnu/java/nio/EpollSelectorImpl.java: * notification mechanism on GNU/Linux.
classpath/java/io/File.java: * <strong>Implementation note</strong>: Unlike the RI, on Linux and UNIX
classpath/java/net/MimeTypeMapper.java: // On Linux this usually means /etc/mime.types.
classpath/ltcf-cxx.sh: linux*)
classpath/ltcf-cxx.sh: linux*)
classpath/ltconfig:# Transform linux* to *-*-linux-gnu*, to support old configure scripts.
classpath/ltconfig:linux-gnu*) ;;
classpath/ltconfig:linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig:# No shared lib support for Linux oldld, aout, or coff.
classpath/ltconfig:linux-gnuoldld* | linux-gnuaout* | linux-gnucoff*)
classpath/ltconfig:# This must be Linux ELF.
classpath/ltconfig:linux-gnu*)
classpath/ltconfig: version_type=linux
classpath/ltconfig: # powerpc, because MkLinux only supported shared libraries with the
classpath/ltconfig: # most powerpc-linux boxes support dynamic linking these days and
classpath/ltconfig: # assume the GNU/Linux dynamic linker is in use.
classpath/ltconfig: dynamic_linker='GNU/Linux ld.so'
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig: dynamic_linker='GNU/Linux ld.so'
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltconfig: version_type=linux
classpath/ltmain.sh:# compiler flags: $LTCFLAGS
classpath/ltmain.sh: *-*-linux*)
classpath/ltmain.sh: darwin|linux|osf|windows|none)
classpath/ltmain.sh: # Like Linux, but with the current version available in
classpath/ltmain.sh: linux)
classpath/m4/lib-link.m4: dnl 2. if it's /usr/local/include and we are using GCC on Linux,
classpath/m4/lib-link.m4: linux* | gnu* | k*bsd*-gnu) haveit=yes;;
classpath/m4/lib-link.m4: dnl 2. if it's /usr/local/lib and we are using GCC on Linux,
classpath/m4/lib-link.m4: linux* | gnu* | k*bsd*-gnu) haveit=yes;;
classpath/m4/lib-prefix.m4: dnl 3. if it's /usr/local/include and we are using GCC on Linux,
classpath/m4/lib-prefix.m4: linux* | gnu* | k*bsd*-gnu) haveit=yes;;
classpath/m4/lib-prefix.m4: CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }-I$additional_includedir"
classpath/m4/lib-prefix.m4: dnl 3. if it's /usr/local/lib and we are using GCC on Linux,
classpath/m4/lib-prefix.m4: linux*) haveit=yes;;
classpath/m4/lib-prefix.m4: LDFLAGS="${LDFLAGS}${LDFLAGS:+ }-L$additional_libdir"
classpath/m4/lib-prefix.m4: dnl On glibc systems, the current practice is that on a system supporting
classpath/native/jni/java-net/javanet.c: /* Not writable on Linux */
classpath/native/jni/java-nio/gnu_java_nio_VMChannel.c: * vector based read call (currently readv on Linux).
classpath/native/jni/java-nio/gnu_java_nio_VMChannel.c: * vector based read call (currently readv on Linux).
classpath/vm/reference/java/lang/VMProcess.java: // Linux use a process-per-thread model, which means the same thread
configure.ac: *-*-linux*)
configure.ac: AC_DEFINE(LINUX_THREADS, 1, [Define if using POSIX threads on Linux.])
include/config.h.in:/* Define if using POSIX threads on Linux. */
include/config.h.in:#undef LINUX_THREADS
include/posix-threads.h:# ifdef LOCK_DEBUG /* Assumes Linuxthreads */
include/posix-threads.h:#ifndef LINUX_THREADS
include/posix-threads.h:// pthread_mutex_destroy does nothing on Linux and it is a win to avoid
include/posix-threads.h:#endif /* LINUX_THREADS */
include/posix-threads.h: // For linux_threads this is really a pointer to its thread data
include/posix-threads.h:// E.g. on X86 Linux, pthread_self() is too slow for our purpose.
include/posix-threads.h:// This code should probably go away when Linux/X86 starts using a
posix-threads.cc:#if defined(LINUX_THREADS) || defined(FREEBSD_THREADS)
posix-threads.cc: // LinuxThreads (prior to glibc 2.1) usurps both SIGUSR1 and SIGUSR2.
posix-threads.cc:#else /* LINUX_THREADS */
posix-threads.cc:#endif /* LINUX_THREADS */
posix-threads.cc: // In older glibc's (prior to 2.1.3), the cond_wait functions may
posix-threads.cc: // glibc 2.1.3 doesn't set the value of `thread' until after start_routine
configure.ac: # We can save a little space at runtime if the mutex has m_count
configure.ac: # or __m_count. This is a nice hack for Linux.
configure.ac: AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[
configure.ac: extern pthread_mutex_t *mutex; int q = mutex->m_count;
Makes sense to implement in our [[/libpthread]] ([[!taglink
open_issue_libpthread]])?
configure.ac: i?86-*-linux*)
configure.ac: SIGNAL_HANDLER=include/i386-signal.h
configure.ac: SIGNAL_HANDLER_AUX=include/x86_64-signal.h
include/i386-signal.h:// on an i386 based Linux system.
include/i386-signal.h: directly rather than via glibc. The sigaction structure that the
include/i386-signal.h: * called _directly_ by the kernel, because linuxthreads wraps signal
include/i386-signal.h: * handler to a linuxthreads wrapper, we will lose the PC adjustment
include/i386-signal.h: * Also, there may not be any unwind info in the linuxthreads
configure.ac: *-linux*)
configure.ac: host_os=linux;;
configure.host: i[34567]86*-linux* | \
configure.host: can_unwind_signal=yes
configure.host: libgcj_ld_symbolic='-Wl,-Bsymbolic'
configure.host: if test x$slow_pthread_self = xyes \
configure.host: [...]
configure.host: i[34567]86*-kfreebsd*-gnu | x86_64*-kfreebsd*-gnu)
configure.host: libgcj_ld_symbolic='-Wl,-Bsymbolic'
configure.host: slow_pthread_self=
java/lang/natObject.cc:// What follows currenly assumes a Linux-like platform.
java/lang/natObject.cc:// Some of it specifically assumes X86 or IA64 Linux, though that
java/lang/natObject.cc:# define INVALID_THREAD_ID 0 // Works for Linux?
java/lang/natObject.cc: const unsigned MIN_SLEEP_USECS = 2001; // Shorter times spin under Linux.
java/lang/natVMClassLoader.cc: // a module named (eg, on Linux) `lib-gnu-pkg-quux.so', followed
libltdl/acinclude.m4:x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*|s390*-*linux*|sparc*-*linux*)
libltdl/acinclude.m4: x86_64-*linux*)
libltdl/acinclude.m4: ppc64-*linux*|powerpc64-*linux*)
libltdl/acinclude.m4: LD="${LD-ld} -m elf32ppclinux"
libltdl/acinclude.m4: s390x-*linux*)
libltdl/acinclude.m4: sparc64-*linux*)
libltdl/acinclude.m4: x86_64-*linux*)
libltdl/acinclude.m4: ppc*-*linux*|powerpc*-*linux*)
libltdl/acinclude.m4: s390*-*linux*)
libltdl/acinclude.m4: sparc*-*linux*)
libltdl/acinclude.m4: # Under GNU Hurd, this test is not required because there is
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4:# No shared lib support for Linux oldld, aout, or coff.
libltdl/acinclude.m4:linux*oldld* | linux*aout* | linux*coff*)
libltdl/acinclude.m4:# This must be Linux ELF.
libltdl/acinclude.m4:linux*)
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: # powerpc, because MkLinux only supported shared libraries with the
libltdl/acinclude.m4: # most powerpc-linux boxes support dynamic linking these days and
libltdl/acinclude.m4: # assume the GNU/Linux dynamic linker is in use.
libltdl/acinclude.m4: dynamic_linker='GNU/Linux ld.so'
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4: version_type=linux
libltdl/acinclude.m4:# This must be Linux ELF.
libltdl/acinclude.m4:linux*)
libltdl/acinclude.m4: linux*)
libltdl/acinclude.m4:linux*)
libltdl/acinclude.m4: linux*)
libltdl/acinclude.m4: # Linux and Compaq Tru64 Unix objects are PIC.
libltdl/acinclude.m4: # Linux and Compaq Tru64 Unix objects are PIC.
libltdl/acinclude.m4: linux*)
libltdl/acinclude.m4: linux*)
libltdl/acinclude.m4: gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
libltdl/acinclude.m4: # GNU and its variants, using gnu ld.so (Glibc)
libltdl/ltmain.sh: darwin|linux|osf|windows)
libltdl/ltmain.sh: # Like Linux, but with the current version available in
libltdl/ltmain.sh: linux)
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4:# No shared lib support for Linux oldld, aout, or coff.
shlibpath.m4:linux*oldld* | linux*aout* | linux*coff*)
shlibpath.m4:# This must be Linux ELF.
shlibpath.m4:linux*|k*bsd*-gnu)
shlibpath.m4: version_type=linux
shlibpath.m4: # powerpc, because MkLinux only supported shared libraries with the
shlibpath.m4: # most powerpc-linux boxes support dynamic linking these days and
shlibpath.m4: # assume the GNU/Linux dynamic linker is in use.
shlibpath.m4: dynamic_linker='GNU/Linux ld.so'
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
shlibpath.m4: version_type=linux
testsuite/lib/libjava.exp: if { [regexp "linux" $target_triplet] } {
Adds `-specs=libgcj-test.spec`, which is created by `configure`. *This
spec file is read by gcj when linking. It is only used by the testing
harnesses (in libjava and gdb).* TODO. [[!taglink open_issue_gdb]].
* `libgcc`
TODO:
* `config/t-linux`
* `config/i386/t-linux`
* `config/i386/linux-unwind.h`
* `libitm`
TODO:
* `libitm/config/linux`
* `hurd/usr`
`NATIVE_SYSTEM_HEADER_DIR`, `638454a19c1c08f01c10517bc72a114250fc4f33`,
[[!message-id "mcrzkhcbftp.fsf@coign.corp.google.com"]].
Debian.
* Eventually: get rid of this special-casing. [[!message-id
"gckk1s$e0b$1@ger.gmane.org"]].
* [[`libmudflap`|libmudflap]].
* [`-fsplit-stack`](http://nickclifton.livejournal.com/6889.html)
IRC, freenode, #hurd, 2014-01-10:
<gnu_srs1> Hi, I assume gcc -fsplit-stack is not yet supported?
<braunr> gnu_srs1:
https://lists.gnu.org/archive/html/bug-hurd/2013-06/msg00100.html
<gnu_srs1> braunr: That's exactly where the problem is:
src/libgcc/generic-morestack.c:814:__morestack_load_mmap
<gnu_srs1> no return value recorded
<gnu_srs1> creating a call: page = mmap ((void*)0x0, 0, 4, 2, -1, 0);,
returning EINVAL
<braunr> lenght of 0 ?
<gnu_srs1> yes, __morestack_current_segment, is zero
<braunr> mmap is expected to return einval if the requested mapping has
a size of 0 ..
<braunr> i don't know what split stack is, but i remember it's a
problem for the hurd
<gnu_srs1> sorry, the address is zero from the above, and the length in
the call is zero too
<braunr> yes that's what i understood
<braunr> and i'm telling you it's normal
<braunr> the size is invalid
<gnu_srs1> libgcc/generic-morestack.c: mmap
(__morestack_current_segment, 0, PROT_READ, MAP_ANONYMOUS, -1, 0);
<braunr> well this is wrong
<gnu_srs1> and the error code stays, not being reset in subsequent
calls
<gnu_srs1> causing an error later on
<braunr> as roland says in
https://lists.gnu.org/archive/html/bug-hurd/2013-06/msg00102.html, it
should be possible to support split-stack now that we have tls
<gnu_srs1> as thomas reported
<braunr> i don't see the relation between split-stack and the mmap
invocation
<gnu_srs1> tls s in 2.17-97, right? that's the one I tried
<braunr> tls is there, but not split stack support
<braunr> and libpthread still has bugs related to changing the stack
apparently
<braunr> fixed upstream but not yet in debian packages
<braunr> unless you want to try with the thread destruction packages
<braunr> not sure it will change much though
* Also see `libgcc/config/i386/morestack.S`: comments w.r.t
`TARGET_THREAD_SPLIT_STACK_OFFSET`/`%gs:0x30` usage; likely needs
porting.
* As per `libgcc/config/i386/t-stack-i386`, the former file is only used
for `-fsplit-stack` support -- which is currently enabled for us in
`libgcc/config.host`.
* `gcc/config/gnu-user.h` defines `*SPLIT_STACK*` macros -- which aren't
valid for us (yet), I think.
* Also see [[!sourceware_PR 10686]], glibc commit
ecbf434213c0333d81706074e4d107ac45011635 `Reserve new TLS field for x86
and x86_64` (`__private_ss`).
* Might `-fsplit-stack` be useful for us with respect to our
[[multithreaded|multithreading]] libraries?
* `gcc/ada`, `gcc/testsuite/ada`, `gcc/testsuite/gnat.dg`, `gnattools`,
`libada` (not reviewed)
* [[Ada (GNAT)|GNAT]] support is work in progress.
* `gcc/go`, `gcc/testsuite/go.test`, `libgo` (not reviewed)
* The [[Google Go's libgo|gccgo]] (introduced in
e440a3286bc89368b8d3a8fd6accd47191790bf2 (2010-12-03)) needs
OS configuration / support.
* `--enable-frame-pointer`
`gcc/configure.ac`: `enable_frame_pointer=no`
* `--with-dwarf2`?
* `--enable-werror`
* `--enable-checking`
* `--enable-linker-build-id`
* `--enable-gnu-unique-object`
* `--enable-lto`
* `--enable-indirect-function`
[[IFUNC]]
* <http://gcc.gnu.org/ml/gcc/2007-11/msg00289.html>,
<http://gcc.gnu.org/ml/gcc-patches/2010-12/msg00672.html>
* `gcc/config/t-linux` should be named `gcc/config/t-gnu-user` or
similar. Likewise for `gcc/config/i386/t-linux`.
* 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.
* [\[meta-bug\] bootstrap bugs for
\*-gnu\*](http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21824)
* [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)
* See also commit bf1c0af128f33bd342636c4afeaa8f3a8a7cf8ca (reverted in
commit a204f0622242865ffea889bd698bc7c7bd236bd1), commit
05c1aa95e6c37b3b281d749c76c673392941a031.
* Check before/after Joseph changes. (Should be fine.)
* 34618b3190c110b8926cc2b1db4b4eac95451995 »config-list.mk«
What's this used for? (Check ML.) Ask to include i686-pc-gnu (once it is
buildable out of the box)? See also
73905b5de0d9a086f22ded7638bb1c0ae1b91326.
* [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`.
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/`?
* `__GLIBC__`
IRC, freenode, #hurd, 2012-01-05:
<civodul> on GNU/kFreeBSD, it's GCC that defines __GLIBC__, funny
<youpi> ??
<youpi> not from features.h ?
<civodul> in gcc/config/kfreebsd-gnu.h
<civodul> :-)
<pinotree> correct, it's enabled in gcc's config
<pinotree> i discovered that after banging my head on the wall trying
to find out why some stuff wasn't compiling even after kfreebsd
porting patches adding preprocessors checks for __GLIBC__
GNU/kFreeBSD and GNU/kNetBSD: commit
6396cc37141180db4d2c8f73cab4f5977d8a1e19 (2004-06-24, r83577),
GNU/kOpenSolaris: commit 3bef40126fb1633018fce47828df0fa9f65f110c
(2009-01-29, r143768). See also GDB commits
fda1b24c62843f81d31de2af57b1ed9c55f1e348 and
1acb4f4ff73d20850a7524fc939d2651be75f47b, and binutils commits
e3081899be7570eb90ccfd5d767950d3a62871ee,
127c4d4a4fe65bd17ea64db1be7f3c93d393afcb,
47dbf5b634b955c2db1221715d15751e1281546a, and
ad2be7e8b846f4cd67fa1e032f98d5dc1cdb6b8d.
IRC, freenode, #hurd, 2012-05-25:
<gnu_srs> Hi, looks like __GLIBC__ is not defined by default for GNU?
<gnu_srs> touch foo.h; cpp -dM foo.h|grep LIBC: empty
<braunr> gnu_srs: well, this only tells your the compiler defaults
<tschwinge> gnu_srs: See the email I just sent.
[[!message-id "87396od3ej.fsf@schwinge.name"]]
<braunr> __GLIBC__ would probably be introduced by a glibc header
<gnu_srs> tschwinge: I saw your email. I wonder if features.h is
included in the kFreeBSD build of webkit.
<gnu_srs> It is defined in their build, but not in the Hurd build.
<pinotree> gcc on kfreebsd unconditionally defines __GLIBC__
<pinotree> (a bit stupid choice imho, but hardly something that could
be changed now...)
<braunr> :/
<braunr> personally i don't consider this only "a bit" stupid, as
kfreebsd is one of the various efforts pushing towards portability
<braunr> and using such hacks actually hinders portability ...
<pinotree> yeah don't tell me, i can remember at least half dozen of
occasions when a code wouldn't have been compiling at all on other
glibc platforms otherwise
<pinotree> sure, i have nothing against kfreebsd's efforts, but making
gcc define something which is proper of the libc used is stupid
<braunr> it is
<pinotree> i spotted changes like:
<pinotree> -#ifdef __linux
<pinotree> +#if defined(__linux__) || defined(__GLIBC__)
<pinotree> and wondered why they wouldn't work at all for us... and
then realized there were no #include in that file before that
preprocessor check
<tschwinge> This is even in upstream GCC gcc/config/kfreebsd-gnu.h:
<tschwinge> #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
<tschwinge> do \
<tschwinge> { \
<tschwinge> builtin_define ("__FreeBSD_kernel__"); \
<tschwinge> builtin_define ("__GLIBC__"); \
<tschwinge> builtin_define_std ("unix"); \
<tschwinge> builtin_assert ("system=unix"); \
<tschwinge> builtin_assert ("system=posix"); \
<tschwinge> } \
<tschwinge> while (0)
<tschwinge> I might raise this upstream at some point.
<pinotree> tschwinge: i could guess the change was proposed by the
kfreebsd people, so asking them before at d-bsd@d.o would be a start
<tschwinge> pinotree: Ack.
<pinotree> especially that they would need to fix stuff afterwards
<pinotree> imho we could propose them the change, and if they agree put
that as local patch to debian's gcc4.6/.7 after wheezy, so there is
plenty of time for them to fix stuff
<pinotree> what should be done first is, however, find out why that
define has been added to gcc
[[!message-id "201211061305.02565.pino@debian.org"]].
IRC, freenode, #hurd, 2014-01-08:
<gnu_srs> How come __GLIBC__ is defined in gcc for kFreeBSD and not
GNU? They sometimes use that instead of __FreeBSD_kernel__
<pochu> it's defined by libc's /usr/include/features.h
<gnu_srs> pochu: __GLIBC__ is defined in features.h both for GNU and
kFreeBSD, but only in gcc/cpp for kFreeBSD: touch foo.h;gcc -E -dM
foo.h|grep GLIBC
<pochu> gnu_srs: #include <stdlib.h>
<gnu_srs> pochu: they both include <features.h>
<pochu> gnu_srs: I get __GLIBC__ defined if I include features.h
<pochu> with an empty file (as suggested by your `touch foo.h') I don't
get it defined, whether on hurd or linux, but I think that's expected
<gnu_srs> pochu: might be so but it is not pre-defined in CPP, as it is
for kFreeBSD.
<gnu_srs> I think it should not be defined, or it should be defined by
all three: GNU,.kFreeBSD and Linux
<gnu_srs> an anomaly, something for tschwinge
<braunr> https://lists.debian.org/debian-bsd/2012/11/msg00016.html
<gnu_srs> braunr: good finding, I assume nothing has happened since
then?
<braunr> not likely
* [low] Does `-mcpu=native` etc. work? (For example,
2ae1f0cc764e998bfc684d662aba0497e8723e52.)
* transactional memory, 4c0315d05fa0f707875686abc4f91f7a979a7c7b
* `config/mmap.m4`
* In `libitm/config/`, is the generic stuff (`tls.h`, etc.) enough for
us?
* f29a2041f32773464e226a83f41762c2e9cf658e
(e53a96c2136f7cdff4699475fea41afeed9dece3)
Testresults same as for GNU/Linux.
* [high] 3efc00f6f17778172d3fa7ac737fa1473b3b4d5a, `Check __GLIBC__ when
using __SIGRTMIN`. GCC PR52390. Fixed by
8d2259c83f94c082ad8a00b5d00bb639ce24efce.
* 15ac1e637ad0cb92bf7629205c617ea847a4b810 `Build 64-bit libffi multilib for
i?86-linux`.
* `libstdc++`: uses `_GLIBCXX_HAVE_TLS`, but where is this defined? Supposed
to come from `config/tls.m4:GCC_CHECK_TLS`?
* `libgcc/gthr-posix.h:__gthread_active_p` -- is this suitable for us? This
is used in libgcc for ObjC wrapper stuff and similar in libstdc++.
C.f. [[!message-id "x57jobtqx89w.fsf@frobland.mtv.corp.google.com"]],
[[!message-id "x57jd359fkx3.fsf@frobland.mtv.corp.google.com"]] as well as
[[!debbug 629866]]/[[!message-id
"20110609002620.GA16719@const.famille.thibault.fr"]]. commit
026e608ecebcb2a6193971006a85276307d79b00.
* [[`libsanitizer`|_san]] (not reviewed)
A lot of Linux-specific things.
* `libcilkrts`
IRC, freenode, #hurd, 2014-01-10:
<youpi> bwaarf, libcilkrts in gcc-4.9
<p2-mate> libcilkrts?
<youpi> the runtime for the cilk language I guess
<tschwinge> Yes. That most likely needs disabling for us.
<tschwinge> I'll hve a look eventually.
<tschwinge> As soon as I get
<http://news.gmane.org/find-root.php?message_id=%3C87wqjjo5kx.fsf%40kepler.schwinge.homeip.net%3E>
resolved, actually.
[[!debbug 734973]].
* `WCONTINUED`
IRC, OFTC, #debian-hurd, 2014-02-25:
<gnu_srs> youpi: some gcc-4.9 packages (and source) are needed for
gnat-4.9 to build: Is it OK to propose this patch:
http://paste.debian.net/84079/
--- a/src/gcc/lto_lto.c.orig 2014-02-14 19:22:14.000000000 +0100
+++ b/src/gcc/lto/lto.c 2014-02-25 20:50:20.000000000 +0100
@@ -2476,7 +2476,11 @@
int status;
do
{
+#ifdef __GNU__
+ int w = waitpid(0, &status, WUNTRACED);
+#else
int w = waitpid(0, &status, WUNTRACED | WCONTINUED);
+#endif
if (w == -1)
fatal_error ("waitpid failed");
<youpi> gnu_srs: rather ifndef WCONTINUED
# Build
Here's a log of a GCC build run; this is from our [[Git repository's
2a3496bebfe9d89f11d0b7a591afac55e11d5263 (2013-06-06;
3a930d3fc68785662f5f3f4af02474cb21a62056 (2013-06-06))
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 --enable-languages=all,ada 2>&1 | tee log_build
[...]
$ make 2>&1 | tee log_build_
[...]
Different hosts may default to different shells and compiler versions; thus
harmonized.
We're stuck with GCC 4.6 until there are Debian *gnat-4.7*/*gnat-4.8* packages
avaible.
This takes up around 3.5 GiB, and needs roughly 3.5 h on kepler.SCHWINGE and
15.25 h on coulomb.SCHWINGE.
<!--
$ (make && touch .go-install) 2>&1 | tee log_build_ && test -f .go-install && (make install && touch .go-test) 2>&1 | tee log_install && test -f .go-test && make -k check 2>&1 | tee log_test
-->
## Analysis
$ toolchain/logs/process gcc build
* [[`checking if gcc static flag -static
works... no`|glibc_madvise_vs_static_linking]]
Addressed in Debian glibc.
* `gcc/config/host-linux.c` vs. `host-default.c`
* `gcc/config/x-linux`
* *fixincludes* stuff
* malloc?
-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`
`sed`ed away in `log_build*`. TODO.
* `-march=i486 -mtune=i686`
`sed`ed away in `log_build*`. This comes from `libgomp/configure.tgt`,
where this is added to `XCFLAGS` for `i[456]86-*-linux*` only. TODO?
* Missing `EOWNERDEAD`, `ENOTRECOVERABLE`. What're they used for?
* `RLIMIT_VMEM`. Usage kosher?
* `libtool: link: ar rc .libs/libstdc++.a [...]`
Just different order of object files, or another problem? TODO
* `libobjc/encoding.c`:
libtool: compile: [...]/hurd/master.build/./gcc/xgcc [...] [...]/hurd/master/libobjc/encoding.c -c [...]
+[...]/hurd/master/libobjc/encoding.c:128:1: warning: '_darwin_rs6000_special_round_type_align' defined but not used [-Wunused-function]
* `libobjc/thr.c`: `gcc/gthr-posix.h`
libtool: compile: [...]/hurd/master.build/./gcc/xgcc [...] [...]/hurd/master/libobjc/thr.c -c [...]
+In file included from [...]/hurd/master/libobjc/../libgcc/gthr.h:142:0,
+ from [...]/hurd/master/libobjc/thr.c:45:
+../libgcc/gthr-default.h: In function '__gthread_objc_thread_set_priority':
+../libgcc/gthr-default.h:388:41: warning: unused parameter 'priority' [-Wunused-parameter]
* `/proc/self/*`
-checking for /proc/self/exe... yes
-checking for /proc/self/maps... yes
+checking for /proc/self/exe... no
+checking for /proc/self/maps... no
* GCJ: `java-signal.h`, `java-signal-aux.h`
-config.status: linking ../../../hurd/libjava/include/i386-signal.h to include/java-signal.h
-config.status: linking ../../../hurd/libjava/include/i386-signal.h to include/java-signal-aux.h
+config.status: linking ../../../hurd/libjava/include/default-signal.h to include/java-signal.h
+config.status: linking ../../../hurd/libjava/include/default-signal.h to include/java-signal-aux.h
* GCJ: `jni_md.h`
-checking jni_md.h support... yes
+checking jni_md.h support... configure: WARNING: no
* *default library search path*
-checking for the default library search path... /lib /usr/lib /lib/i386-linux-gnu /usr/lib/i386-linux-gnu /lib/i486-linux-gnu /usr/lib/i486-linux-gnu /usr/local/lib
+checking for the default library search path... /lib /usr/lib
[[binutils]] issue? Should be aligned by Samuel's binutils patch.
* `./classpath/[...]/*.properties`
Just different order of files, or another problem?
* `libjava/gnu/gcj/util/natGCInfo.cc`
libtool: compile: [...]/hurd/master.build/./gcc/xgcc [...] -c ../../../master/libjava/gnu/gcj/util/natGCInfo.cc [...]
+../../../master/libjava/gnu/gcj/util/natGCInfo.cc:440:1: warning: unused parameter 'name' [-Wunused-parameter]
+../../../master/libjava/gnu/gcj/util/natGCInfo.cc:446:1: warning: unused parameter 'name' [-Wunused-parameter]
+../../../master/libjava/gnu/gcj/util/natGCInfo.cc:452:1: warning: unused parameter 'name' [-Wunused-parameter]
* `libgcj.la`
Just different order of object files, or another problem?
Is there a pattern that GNU/Hurd hands out the files alphabetically sorted
where it wouldn't need to ([[!taglink open_issue_hurd]])?
* `libjvm.la`, `.libs/libjvm.so`, `libgij.la`, `.libs/libgij.so.12.0.0`
`-Wl,-Bsymbolic` vs. `-Wl,-Bsymbolic-functions`
* `jar`
make[2]: Entering directory `[...]/hurd/master.build/[ARCH]/libjava'
-: make ; exec make "AR_FLAGS=rc" [...] "RANLIB=ranlib" "DESTDIR=" "JAR=[...]/hurd/master.build/[ARCH]/libjava/scripts/jar" DO=all multi-do
+: make ; exec make "AR_FLAGS=rc" [...] "RANLIB=ranlib" "DESTDIR=" "JAR=jar" DO=all multi-do
Probably because kepler.SCHWINGE has an OpenJDK `/usr/bin/jar`, and
coulomb.SCHWINGE a GCJ one.
There are other instances of this in the following.
* `value-unwind.h`
-DEFINES='' HEADERS='../../../master/libgcc/config/i386/value-unwind.h' \
+DEFINES='' HEADERS='' \
../../../master/libgcc/mkheader.sh > tmp-libgcc_tm.h
Comes from `gcc/config.gcc`: for `i[34567]86-*-linux*`
vs. `i[34567]86-*-*`, but apparently is important only for *x86_64* anyway.
* `soft-fp` prototypes
../../../master/libgcc/soft-fp/eqtf2.c:34:9: warning: no previous prototype for '__eqtf2' [-Wmissing-prototypes]
+../../../master/libgcc/soft-fp/eqtf2.c:50:1: warning: no previous prototype for '__netf2' [-Wmissing-prototypes]
../../../master/libgcc/soft-fp/getf2.c:34:9: warning: no previous prototype for '__getf2' [-Wmissing-prototypes]
+../../../master/libgcc/soft-fp/getf2.c:50:1: warning: no previous prototype for '__gttf2' [-Wmissing-prototypes]
../../../master/libgcc/soft-fp/letf2.c:34:9: warning: no previous prototype for '__letf2' [-Wmissing-prototypes]
+../../../master/libgcc/soft-fp/letf2.c:50:1: warning: no previous prototype for '__lttf2' [-Wmissing-prototypes]
* `libatomic` on GNU/Linux compiles several more files than on GNU/Hurd. Is
that correct? Probably futex support.
* 2e2db3f92b534460c68c2f9ae64455884424beb6..3336556d2cb32f46322922a83015f760cfb79d8f
Both GNU/Linux and GNU/Hurd:
-checking assembler for rep and lock prefix... yes
+checking assembler for rep and lock prefix... no
TODO.
# Install
$ make install 2>&1 | tee log_install
[...]
This takes up around 1.1 GiB, and needs roughly 5 min on kepler.SCHWINGE and 37
min on coulomb.SCHWINGE.
## Analysis
$ toolchain/logs/process gcc install
* `libtool: finish`: `ldconfig` is not run for the Hurd.
[[libtool]].
* `libjvm.la`, `.libs/libjvm.so`, `libgij.la`, `.libs/libgij.so.12.0.0`
`-Wl,-Bsymbolic` vs. `-Wl,-Bsymbolic-functions` (as above)
* `jar`: as above.
# Testsuite
<http://gcc.gnu.org/install/test.html>
kepler.SCHWINGE:
$ make -k check 2>&1 | tee log_test
[...]
coulomb.SCHWINGE:
$ awk '/^maybe-check-target/ { next; }; /^maybe-check-[^:]*:./ { print; };' < Makefile
maybe-check-fixincludes: check-fixincludes
maybe-check-gcc: check-gcc
maybe-check-intl: check-intl
maybe-check-libbacktrace: check-libbacktrace
maybe-check-libcpp: check-libcpp
maybe-check-libdecnumber: check-libdecnumber
maybe-check-libiberty: check-libiberty
maybe-check-zlib: check-zlib
maybe-check-gnattools: check-gnattools
maybe-check-lto-plugin: check-lto-plugin
$ grep ^CHECK_TARGETS < gcc/Makefile
CHECK_TARGETS = check-ada check-c check-c++ check-fortran check-java check-lto check-objc
$ export LC_ALL=C
[reboot]
$ make -k check-fixincludes 2>&1 | tee log_test_1_check-fixincludes
[...]
$ make -k -C gcc check-ada 2>&1 | tee log_test_2_gcc_check-ada
[...]
[reboot]
$ make -k -C gcc check-c 2>&1 | tee log_test_2_gcc_check-c
[...]
[reboot]
$ make -k -C gcc check-c++ 2>&1 | tee log_test_2_gcc_check-c++
[...]
[reboot]
$ make -k -C gcc check-fortran check-java check-lto check-objc 2>&1 | tee log_test_2_gcc_check-fortran,check-java,check-lto,check-objc
[...]
[reboot]
$ make -k check-intl check-libbacktrace check-libcpp check-libdecnumber check-libiberty check-zlib check-gnattools check-lto-plugin 2>&1 | tee log_test_3
[...]
$ make -k check-target 2>&1 | tee log_test_4_check-target
[...]
This needs roughly 7.5 h on kepler.SCHWINGE and 3.75 h (`check-fixincludes`,
`gcc/check-ada`) + 14 h (`gcc/check-c`) + 4.5 h (`gcc/check-c++`) + 7.25 h
(`gcc/check-fortran`, `gcc/check-java`, `gcc/check-lto`, `gcc/check-objc`) +
10.25 h (`check-intl`, [...], `check-lto-plugin`, `check-target`) = 39.75 h on
coulomb.SCHWINGE.
## Analysis
A lot of the failures are due to gcc's unwind support not knowing about signal trampoline on GNU/Hurd, this is a TODO.
$ toolchain/logs/process gcc test
* PTYs
Occasionally tests FAIL due to:
spawn -open -1 failed, 1 5, The system has no more ptys. Ask your system administrator to create more.
TODO.
* Some are correctly UNSUPPORTED:
* [[IFUNC]]
Also multiversioning, `g++.dg/ext/mv*`, for example (several of which
started FAILing (ICE) on kepler.SCHWINGE).
* SSE2 (`sse2_runtime`)
`g++.dg/other/i386-1.C`, `g++.dg/other/pr40446.C`,
`g++.dg/other/pr49133.C`, `gcc.dg/compat/union-m128-1_main.c`,
`gcc.dg/compat/vector-1a_main.c`, `gcc.dg/compat/vector-2a_main.c`,
`gcc.dg/pr36584.c`, `gcc.dg/pr37544.c`, `gcc.dg/torture/pr16104-1.c`,
`gcc.dg/torture/pr35771-1.c`, `gcc.dg/torture/pr50444.c`,
`gcc.dg/torture/stackalign/alloca-2.c`,
`gcc.dg/torture/stackalign/alloca-3.c`,
`gcc.dg/torture/stackalign/push-1.c`,
`gcc.dg/torture/stackalign/vararg-3.c`, `gcc.target/i386/pr39315-2.c`,
`gcc.target/i386/pr39315-4.c`, `gcc.target/i386/pr44948-2a.c`,
`gcc.target/i386/pr46880.c`, `gcc.target/i386/pr52736.c`,
`gcc.target/i386/pr54703.c`, `gcc.target/i386/sse2-extract-1.c`,
several from `gfortran.fortran-torture`
* [[`asan.exp`|_san]]
* missing profiling C library (`-lc_p`)
`g++.old-deja/g++.law/profile1.C`, `gcc.dg/20021014-1.c`,
`gcc.dg/nest.c`, `gcc.dg/nested-func-4.c`, `gcc.dg/pr32450.c`,
`gcc.dg/pr43643.c`
* other C libraries
`gcc.target/i386/long-double-64-2.c`,
`gcc.target/i386/long-double-80-3.c`
* `gcc`
spawn [open ...]
FAIL: gcc.dg/split-2.c execution test
FAIL: gcc.dg/split-5.c execution test
TODO.
xgcc: internal compiler error: Aborted (program cc1)
libbacktrace could not find executable to open
Please submit a full bug report, [...]
FAIL: largefile.c -O0 -g -I. -Dwith_PCH (internal compiler error)
[...]
TODO.
* `g++`
spawn [open ...]
terminate called after throwing an instance of 'int'
FAIL: g++.dg/eh/sighandle.C -std=gnu++98 execution test
FAIL: g++.dg/eh/sighandle.C -std=gnu++11 execution test
TODO.
spawn [open ...]
FAIL: g++.dg/cdce3.C -std=gnu++98 execution test
FAIL: g++.dg/cdce3.C -std=gnu++11 execution test
TODO.
FAIL: g++.dg/tls/thread_local3.C -std=gnu++11 execution test
FAIL: g++.dg/tls/thread_local3g.C -std=gnu++11 execution test
FAIL: g++.dg/tls/thread_local4.C -std=gnu++11 execution test
FAIL: g++.dg/tls/thread_local4g.C -std=gnu++11 execution test
FAIL: g++.dg/tls/thread_local5.C -std=gnu++11 execution test
FAIL: g++.dg/tls/thread_local5g.C -std=gnu++11 execution test
They used to PASS, but FAIL as of
769bf18a20ee2540ca7601cdafabd62b18b9751b..be3860ba8df48cca3253da4f02fd2d42d856ce80.
TODO.
-PASS: g++.dg/vect/pr36648.cc -std=c++98 execution test
-PASS: g++.dg/vect/pr36648.cc -std=c++11 execution test
On kepler.SCHWINGE, executables are generated (and run), on
coulomb.SCHWINGE only assembler code is generated. TODO. Likewise for
execution tests from `gcc.dg/vect` and `gfortran.dg/vect`.
* `gcc`, `g++`
FAIL: gcc.dg/cleanup-10.c execution test
FAIL: gcc.dg/cleanup-11.c execution test
FAIL: gcc.dg/cleanup-8.c execution test
FAIL: gcc.dg/cleanup-9.c execution test
FAIL: g++.dg/ext/cleanup-10.C -std=gnu++98 execution test
FAIL: g++.dg/ext/cleanup-10.C -std=gnu++11 execution test
FAIL: g++.dg/ext/cleanup-11.C -std=gnu++98 execution test
FAIL: g++.dg/ext/cleanup-11.C -std=gnu++11 execution test
FAIL: g++.dg/ext/cleanup-8.C -std=gnu++98 execution test
FAIL: g++.dg/ext/cleanup-8.C -std=gnu++11 execution test
FAIL: g++.dg/ext/cleanup-9.C -std=gnu++98 execution test
FAIL: g++.dg/ext/cleanup-9.C -std=gnu++11 execution test
TODO.
spawn [open ...]
gdb: took too long to attach
testcase [...]/gcc/testsuite/gcc.dg/guality/guality.exp completed in 16 seconds
spawn [open ...]
gdb: took too long to attach
testcase [...]/gcc/testsuite/g++.dg/guality/guality.exp completed in 20 seconds
TODO. The gfortran ones worked fine.
* `[ARCH]/libgomp`
As of dcdba5abca23716daa6aeb5c92f367e0978e4539 (2013-05-27;
0479dc77cf50ee78769b55563051cf72d39b3d60 (2013-05-27)), plus
`id:"87txlnlg0z.fsf@kepler.schwinge.homeip.net"`, about a dozen of them
(but different ones per each run) FAIL on coulomb.SCHWINGE:
spawn [open ...]
Program aborted. Backtrace:
#0 0x1042523
#1 0x1043D6F
#2 0x10F9BC7
FAIL: libgomp.fortran/lib1.f90 -O1 execution test
All have basically the same backtrace. TODO.
* `[ARCH]/libjava`
spawn [open ...]
Exception in thread "main" java.io.IOException: Invalid argument
at gnu.java.nio.channels.FileChannelImpl.write(natFileChannelImpl.cc:202)
at java.io.FileOutputStream.write(libgcj.so.14)
at java.io.DataOutputStream.write(libgcj.so.14)
at java.io.RandomAccessFile.write(libgcj.so.14)
at LargeFile.main(LargeFile.exe)
FAIL: LargeFile execution - source compiled test
UNTESTED: LargeFile output - source compiled test
FAIL: LargeFile -findirect-dispatch execution - source compiled test
UNTESTED: LargeFile -findirect-dispatch output - source compiled test
FAIL: LargeFile -O3 execution - source compiled test
UNTESTED: LargeFile -O3 output - source compiled test
FAIL: LargeFile -O3 -findirect-dispatch execution - source compiled test
UNTESTED: LargeFile -O3 -findirect-dispatch output - source compiled test
TODO.
spawn [open ...]
1
FAIL: Throw_2 execution - source compiled test
UNTESTED: Throw_2 output - source compiled test
FAIL: Throw_2 -findirect-dispatch execution - source compiled test
UNTESTED: Throw_2 -findirect-dispatch output - source compiled test
FAIL: Throw_2 -O3 execution - source compiled test
UNTESTED: Throw_2 -O3 output - source compiled test
FAIL: Throw_2 -O3 -findirect-dispatch execution - source compiled test
UNTESTED: Throw_2 -O3 -findirect-dispatch output - source compiled test
TODO.
* `[ARCH]/libmudflap`
spawn [open ...]
FAIL: libmudflap.cth/pass37-frag.c (-O0) execution test
FAIL: libmudflap.cth/pass37-frag.c (-O0) output pattern test
FAIL: libmudflap.cth/pass37-frag.c (-O0) (rerun 1) execution test
FAIL: libmudflap.cth/pass37-frag.c (-O0) (rerun 1) output pattern test
[...]
TODO. Seems like not just timeouts (though, reported before: [[!GCC_PR
20003]]). If GDB is to believed, it seems like confusion between
libmudflap and glibc startup (while setting up the signal thread?):
#0 getenv (name=0x12dabee "LANGUAGE") at getenv.c:81
#1 0x011b2c78 in guess_category_value (categoryname=<optimized out>, category=<optimized out>) at dcigettext.c:1359
#2 __dcigettext (domainname=0x12dab1b <_libc_intl_domainname> "libc", msgid1=0x12e1cd8 "Error in unknown error system: ", msgid2=0x0, plural=0, n=0, category=5) at dcigettext.c:575
#3 0x011b1c53 in __dcgettext (domainname=0x12dab1b <_libc_intl_domainname> "libc", msgid=0x12e1cd8 "Error in unknown error system: ", category=5) at dcgettext.c:53
#4 0x01203728 in __strerror_r (errnum=-1, buf=0x15ff648 "", buflen=1024) at ../sysdeps/mach/_strerror.c:57
#5 0x011b0f30 in __assert_perror_fail (errnum=-1, file=0x1133969 "./pthread/cthreads-compat.c", line=45, function=0x1133985 <__PRETTY_FUNCTION__.5356> "cthread_fork") at assert-perr.c:62
#6 0x011324d4 in cthread_fork (func=0x118b0b0 <_hurd_msgport_receive>, arg=0x0) at ./pthread/cthreads-compat.c:45
#7 0x01192a96 in _hurdsig_init (intarray=0x102a000, intarraysize=5) at hurdsig.c:1499
#8 0x0117b9f8 in _hurd_new_proc_init (argv=0x15ffb88, intarray=0x102a000, intarraysize=5) at hurdinit.c:138
#9 0x0117bfef in _hurd_init (flags=8, argv=0x15ffb88, portarray=0x1029000, portarraysize=6, intarray=0x102a000, intarraysize=5) at hurdinit.c:94
#10 0x011a47c4 in init1 (argc=1, arg0=0x1025000 "/media/erich/home/thomas/tmp/gcc/hurd/master.build/i686-unknown-gnu0.3/libmudflap/testsuite/pass37-frag.exe") at ../sysdeps/mach/hurd/i386/init-first.c:136
#11 0x00001ec6 in _dl_start_user () from /lib/ld.so
pthread/cthreads-compat.c:
38 cthread_t
39 cthread_fork (cthread_fn_t func, void *arg)
40 {
41 pthread_t thread;
42 int err;
43
44 err = pthread_create (&thread, NULL, func, arg);
45 assert_perror (err);
Breakpoint 2, cthread_fork (func=0x118b0b0 <_hurd_msgport_receive>, arg=0x0) at ./pthread/cthreads-compat.c:44
44 err = pthread_create (&thread, NULL, func, arg);
(gdb) info threads
Id Target Id Frame
* 4 Thread 17597.16 cthread_fork (func=0x118b0b0 <_hurd_msgport_receive>, arg=0x0) at ./pthread/cthreads-compat.c:44
(gdb) s
40 {
(gdb)
44 err = pthread_create (&thread, NULL, func, arg);
(gdb)
Breakpoint 1, pthread_create (thr=0x15ffa70, attr=0x0, start=0x118b0b0 <_hurd_msgport_receive>, arg=0x0) at ../../../master/libmudflap/mf-hooks3.c:272
272 {
(gdb) s
275 TRACE ("pthread_create\n");
(gdb)
278 si = CALL_REAL (malloc, sizeof (*si));
(gdb) n
279 si->user_fn = start;
(gdb)
283 return CALL_REAL (pthread_create, thr, attr, __mf_pthread_spawner, si);
(gdb) s
279 si->user_fn = start;
(gdb)
280 si->user_arg = arg;
(gdb)
283 return CALL_REAL (pthread_create, thr, attr, __mf_pthread_spawner, si);
(gdb)
280 si->user_arg = arg;
(gdb)
283 return CALL_REAL (pthread_create, thr, attr, __mf_pthread_spawner, si);
(gdb)
__mf_0fn_pthread_create (thr=thr@entry=0x15ffa70, attr=attr@entry=0x0, start=start@entry=0x1041070 <__mf_pthread_spawner>, arg=arg@entry=0x108e520 <__mf_0fn_bufs+12288>) at ../../../master/libmudflap/mf-hooks3.c:265
265 }
(gdb) s
pthread_create (thr=0x15ffa70, attr=0x0, start=0x118b0b0 <_hurd_msgport_receive>, arg=0x0) at ../../../master/libmudflap/mf-hooks3.c:284
284 }
(gdb) s
cthread_fork (func=0x118b0b0 <_hurd_msgport_receive>, arg=0x0) at ./pthread/cthreads-compat.c:45
45 assert_perror (err);
(gdb) s
__assert_perror_fail (errnum=-1, file=0x1133969 "./pthread/cthreads-compat.c", line=45, function=0x1133985 <__PRETTY_FUNCTION__.5356> "cthread_fork") at assert-perr.c:55
Is this `libmudflap/mf-hooks3.c:__mf_0fn_pthread_create`, *a special
bootstrap variant*, that indeed just returns `-1`?
* `[ARCH]/libstdc++-v3`
FAIL: libstdc++-abi/abi_check
TODO.
$ readelf --symbols --wide i686-unknown-gnu0.3/./libstdc++-v3/src/.libs/libstdc++.so | grep pthread_mutex
1065: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_unlock@GLIBC_2.13_DEBIAN_31 (37)
2515: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_lock@GLIBC_2.13_DEBIAN_31 (37)
2978: 00068430 15 FUNC GLOBAL DEFAULT 11 _ZNSt12__basic_fileIcEC2EP15__pthread_mutex@@GLIBCXX_3.4
3790: 00068430 15 FUNC GLOBAL DEFAULT 11 _ZNSt12__basic_fileIcEC1EP15__pthread_mutex@@GLIBCXX_3.4
2085: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_unlock@@GLIBC_2.13_DEBIAN_31
3535: 00000000 0 FUNC WEAK DEFAULT UND pthread_mutex_lock@@GLIBC_2.13_DEBIAN_31
3998: 00068430 15 FUNC GLOBAL DEFAULT 11 _ZNSt12__basic_fileIcEC2EP15__pthread_mutex
4810: 00068430 15 FUNC GLOBAL DEFAULT 11 _ZNSt12__basic_fileIcEC1EP15__pthread_mutex
`_ZNSt12__basic_fileIcEC1EP15__pthread_mutex`
(`std::__basic_file<char>::__basic_file(__pthread_mutex*)`), but
`_ZNSt12__basic_fileIcEC2EP15pthread_mutex_t`
(`std::__basic_file<char>::__basic_file(pthread_mutex_t*)`) is expected.
FAIL: 22_locale/time_get/get_date/wchar_t/4.cc execution test
FAIL: 27_io/basic_filebuf/close/char/4879.cc execution test
FAIL: 27_io/basic_filebuf/close/char/9964.cc execution test
FAIL: 27_io/basic_filebuf/imbue/char/13171-2.cc execution test
FAIL: 27_io/basic_filebuf/imbue/wchar_t/14975-2.cc execution test
WARNING: program timed out.
FAIL: 27_io/basic_filebuf/open/char/9507.cc execution test
FAIL: 27_io/basic_filebuf/seekoff/char/26777.cc execution test
WARNING: program timed out.
FAIL: 27_io/basic_filebuf/showmanyc/char/9533-1.cc execution test
FAIL: 27_io/basic_filebuf/underflow/char/10097.cc execution test
FAIL: 27_io/objects/char/7.cc execution test
FAIL: 27_io/objects/char/9661-1.cc execution test
FAIL: 27_io/objects/wchar_t/7.cc execution test
FAIL: 27_io/objects/wchar_t/9661-1.cc execution test
FAIL: 30_threads/async/42819.cc execution test
FAIL: 30_threads/async/49668.cc execution test
FAIL: 30_threads/async/54297.cc execution test
FAIL: 30_threads/async/any.cc execution test
FAIL: 30_threads/async/async.cc execution test
FAIL: 30_threads/async/sync.cc execution test
FAIL: 30_threads/call_once/39909.cc execution test
FAIL: 30_threads/call_once/49668.cc execution test
FAIL: 30_threads/call_once/call_once1.cc execution test
FAIL: 30_threads/condition_variable/54185.cc execution test
FAIL: 30_threads/condition_variable_any/50862.cc execution test
FAIL: 30_threads/condition_variable_any/53830.cc execution test
FAIL: 30_threads/future/members/45133.cc execution test
FAIL: 30_threads/future/members/get.cc execution test
FAIL: 30_threads/future/members/get2.cc execution test
FAIL: 30_threads/future/members/share.cc execution test
FAIL: 30_threads/future/members/valid.cc execution test
FAIL: 30_threads/future/members/wait.cc execution test
FAIL: 30_threads/future/members/wait_for.cc execution test
FAIL: 30_threads/future/members/wait_until.cc execution test
FAIL: 30_threads/lock/2.cc execution test
FAIL: 30_threads/lock/4.cc execution test
FAIL: 30_threads/mutex/try_lock/2.cc execution test
FAIL: 30_threads/packaged_task/49668.cc execution test
FAIL: 30_threads/packaged_task/cons/3.cc execution test
FAIL: 30_threads/packaged_task/cons/alloc.cc execution test
FAIL: 30_threads/packaged_task/members/get_future.cc execution test
FAIL: 30_threads/packaged_task/members/invoke.cc execution test
FAIL: 30_threads/packaged_task/members/invoke2.cc execution test
FAIL: 30_threads/packaged_task/members/invoke3.cc execution test
FAIL: 30_threads/packaged_task/members/invoke4.cc execution test
FAIL: 30_threads/packaged_task/members/invoke5.cc execution test
FAIL: 30_threads/packaged_task/members/reset2.cc execution test
FAIL: 30_threads/promise/cons/alloc.cc execution test
FAIL: 30_threads/promise/cons/move.cc execution test
FAIL: 30_threads/promise/cons/move_assign.cc execution test
FAIL: 30_threads/promise/members/get_future.cc execution test
FAIL: 30_threads/promise/members/set_exception.cc execution test
FAIL: 30_threads/promise/members/set_exception2.cc execution test
FAIL: 30_threads/promise/members/set_value.cc execution test
FAIL: 30_threads/promise/members/set_value2.cc execution test
FAIL: 30_threads/promise/members/set_value3.cc execution test
FAIL: 30_threads/promise/members/swap.cc execution test
FAIL: 30_threads/shared_future/members/get.cc execution test
FAIL: 30_threads/shared_future/members/get2.cc execution test
FAIL: 30_threads/shared_future/members/valid.cc execution test
FAIL: 30_threads/shared_future/members/wait.cc execution test
FAIL: 30_threads/shared_future/members/wait_for.cc execution test
FAIL: 30_threads/shared_future/members/wait_until.cc execution test
FAIL: 30_threads/this_thread/3.cc execution test
FAIL: 30_threads/this_thread/4.cc execution test
FAIL: 30_threads/thread/cons/2.cc execution test
FAIL: 30_threads/thread/cons/3.cc execution test
FAIL: 30_threads/thread/cons/4.cc execution test
FAIL: 30_threads/thread/cons/49668.cc execution test
FAIL: 30_threads/thread/cons/5.cc execution test
FAIL: 30_threads/thread/cons/6.cc execution test
FAIL: 30_threads/thread/cons/7.cc execution test
FAIL: 30_threads/thread/cons/8.cc execution test
FAIL: 30_threads/thread/cons/9.cc execution test
FAIL: 30_threads/thread/cons/moveable.cc execution test
FAIL: 30_threads/thread/members/1.cc execution test
FAIL: 30_threads/thread/members/2.cc execution test
FAIL: 30_threads/thread/members/3.cc execution test
FAIL: 30_threads/thread/native_handle/cancel.cc execution test
FAIL: 30_threads/thread/swap/1.cc execution test
FAIL: 30_threads/timed_mutex/try_lock/2.cc execution test
FAIL: 30_threads/timed_mutex/try_lock_for/3.cc execution test
FAIL: 30_threads/timed_mutex/try_lock_until/2.cc execution test
FAIL: 30_threads/try_lock/2.cc execution test
FAIL: 30_threads/try_lock/4.cc execution test
TODO. Perhaps just timeouts? [[!message-id
"200609052027.NAA09861@hpsje.cup.hp.com"]]. [[!message-id
"1227217275.6205.6.camel@janis-laptop"]]. If needed, can re-implement in
GCC DejaGnu's `remote.exp:remote_wait` to get rid of (that is, ignore) its
`timeout` parameter which, in DejaGnu code, is often invoked with a
hard-coded value (that we may want to override) (or is that what
`gcc/testsuite/lib/timeout.exp:standard_wait` is for?). While at it,
`libmudflap/testsuite/libmudflap.c++/ctors.exp` and
`libmudflap/testsuite/libmudflap.c/externs.exp` use hard-coded timeout
values in `remote_wait` calls (also, why don't these use the usual way of
running tests?).
* What is `gcc/testsuite/gcc.test-framework/test-framework.exp` and should we
define `CHECK_TEST_FRAMEWORK` to run these tests?
## Enhancements
### `contrib/testsuite-management/`, `contrib/regression/`
* 35a27ee8c4b349fea44fd1fadc9614ab3cc9d578 `Add an xfail manifest for
x86_64-unknown-linux-gnu to trunk.`
### Parallel Testing
[[!message-id "20110331070322.GI11563@sunsite.ms.mff.cuni.cz"]].
### Distributed Testing
#### IRC, OFTC, #gcc, 2012-05-31
<dnovillo> jsm28: in your mentor testing, you have the source and build
tree available for make check? or it's a pure installed-tree test?
<jsm28> dnovillo: Source tree, install tree, no build tree.
<dnovillo> jsm28: so, you run make check on top of the source tree or copy
the */testsuite trees to a testing area?
<jsm28> Create a site.exp and do runtest in a temporary directory. runtest
is pointed to the source tree to find sources.
<jsm28> For cross testing for GNU/Linux targets, the temporary directory is
mounted at the same path on host and target.
<dnovillo> jsm28: thanks. i guess i'll have to find the slice of the
source tree i need to copy.
<dnovillo> jsm28: for libstdc++ do you write a different site.exp?
<dnovillo> i noticed that it generates a different site,exp there.
<jsm28> The site.exp is mostly the same for all testsuites (so includes
settings that only some testsuites use).
<dnovillo> ok, thanks.
<dnovillo> and when you say "pointed to the source tree" you mean "set
srcdir /path/to/top/of/gcc" ?
<dnovillo> (in site.exp)
<jsm28> The GDB testsuite requires that you run the GDB testsuite's
configure script in the temporary directory where you will run runtest.
I don't think any GCC testsuites we use have requirements like that.
<jsm28> dnovillo: --srcdir option to runtest.
<dnovillo> ah, yes.
<jsm28> (and --tool, --target_board etc.)
<dnovillo> right
<dnovillo> since i'm distributing the tests. i want each node to only do a
bunch of files. this means that i either use 'tool.exp=file-pattern' or
simply copy the subset of files i want tool.exp to find.
<dnovillo> i chose the second approach, but that breaks in a handful of
cases that need files from other sub-directories.
<dnovillo> like g++.dg gcc.dg using stuff from c-c++-common.
<dnovillo> for libstdc++, the possibilities for splitting are enormous as
it has many directories.
<dnovillo> but i'm not setting it right. runtest runs without even trying
to test anything.
<dnovillo> i'm not having it pick up the right driver.
<jsm28> Probably all .exp files should be copied to anywhere running
testsuites, since some read .exp files from other directories.
<dnovillo> jsm28: that could be it too. it's irritating that libstdc++
does not even error out. runtest just does nothing and returns 0.
##### IRC, OFTC, #gcc, 2012-06-06
<dnovillo> any libstdc++ maintainer around?
<dnovillo> or, does anyone know when the testsuite/data files are copied
into the running testsuite/ dir?
<dnovillo> seems to be done in advance by make.
##### [[!message-id "4FC7791E.6040407@gmail.com"]]
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