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roarinelk
Guru
Joined: 04 Mar 2004
Posts: 520
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 Posted: Thu Jan 10, 2008 11:52 am Post subject: [SOLVED] Qt and mips/softfloat |
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I felt a bit uneasy opening a bug in bugzilla about this, mostly because my
toolchain seems unsupported by the gentoo/mips herd.
Anyway here goes: I can't compile qt-3.3.8 for mips32-le; it bails at the final
link stage with a few MIPS relocation errors. So if anyone has successfully
built Qt-3 with a softfloat-little-endian mips toolchain, could you please tell
me your exact toolchain version and used CFLAGS?
Thanks!
Error output below if anyone is interested:
| Code: |
istyle.o .obj/release-shared-mt/moc_qwindowsstyle.o .obj/release-shared-mt/moc_qmotifstyle.o -L/usr/X11R6/lib -lmng -ljpeg -lpng -lz -lXi
-lXrender -lXrandr -lXcursor -lXft -lfreetype -lfontconfig -lXext -lX11 -lm -lSM -lICE -ldl -lpthread
.obj/release-shared-mt/qapplication_x11.o: In function `qt_net_supports(unsigned long)':
qapplication_x11.cpp:(.text+0x13c): relocation truncated to fit: R_MIPS_GOT16 against `qt_net_supported_list'
.obj/release-shared-mt/qapplication_x11.o: In function `QApplication::setEffectEnabled(Qt::UIEffect, bool)':
qapplication_x11.cpp:(.text+0x57c): relocation truncated to fit: R_MIPS_GOT16 against `QApplication::fade_menu'
qapplication_x11.cpp:(.text+0x594): relocation truncated to fit: R_MIPS_GOT16 against `QApplication::fade_menu'
qapplication_x11.cpp:(.text+0x5a4): relocation truncated to fit: R_MIPS_GOT16 against `QApplication::fade_menu'
qapplication_x11.cpp:(.text+0x5b0): relocation truncated to fit: R_MIPS_GOT16 against `QApplication::animate_combo'
.obj/release-shared-mt/qapplication_x11.o: In function `__static_initialization_and_destruction_0(int, int)':
qapplication_x11.cpp:(.text+0x778): relocation truncated to fit: R_MIPS_CALL16 against `QMetaObjectCleanUp::QMetaObjectCleanUp(char const*,
QMetaObject* (*)())'
.obj/release-shared-mt/qapplication_x11.o: In function `QSmSocketReceiver::qt_emit(int, QUObject*)':
qapplication_x11.cpp:(.text+0xe84): relocation truncated to fit: R_MIPS_CALL16 against `QObject::qt_emit(int, QUObject*)'
.obj/release-shared-mt/qapplication_x11.o: In function `QSmSocketReceiver::socketActivated(int)':
qapplication_x11.cpp:(.text+0x108c): relocation truncated to fit: R_MIPS_CALL16 against `SmcGetIceConnection'
.obj/release-shared-mt/qapplication_x11.o: In function `QApplication::isEffectEnabled(Qt::UIEffect)':
qapplication_x11.cpp:(.text+0x1204): relocation truncated to fit: R_MIPS_GOT16 against `QApplication::animate_combo'
qapplication_x11.cpp:(.text+0x1210): relocation truncated to fit: R_MIPS_GOT16 against `QApplication::fade_menu'
.obj/release-shared-mt/qapplication_x11.o: In function `qt_deferred_map_take(QWidget*)':
qapplication_x11.cpp:(.text+0x1244): additional relocation overflows omitted from the output
collect2: ld returned 1 exit status
distcc[12118] ERROR: compile (null) on localhost failed
make[1]: *** [../lib/libqt-mt.so.3.3.8] Error 1
make[1]: Leaving directory `/var/tmp/portage/x11-libs/qt-3.3.8-r4/work/qt-x11-free-3.3.8/src'
make: *** [sub-src] Error 2
*
* ERROR: x11-libs/qt-3.3.8-r4 failed.
* Call stack:
* ebuild.sh, line 46: Called src_compile
* environment, line 2389: Called die
* The specific snippet of code:
* emake src-qmake src-moc sub-src || diefunc "$FUNCNAME" "$LINENO" "$?";
* The die message:
* (no error message)
*
* If you need support, post the topmost build error, and the call stack if relevant.
* A complete build log is located at '/var/tmp/portage/x11-libs/qt-3.3.8-r4/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/x11-libs/qt-3.3.8-r4/temp/environment'.
*
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Judging from the errors I assume it's a toolchain problem.
emerge --info says:
| Code: |
Portage 2.1.4_rc14 (default-linux/mips, gcc-4.2.2, glibc-2.7-r1, 2.6.20 mips)
=================================================================
System uname: 2.6.20 mips Au1200 V0.1
Timestamp of tree: Thu, 10 Jan 2008 01:47:01 +0000
distcc 2.18.3 mipsel-softfloat-linux-gnu (protocols 1 and 2) (default port 3632) [enabled]
ccache version 2.4 [disabled]
app-shells/bash: 3.2_p33
dev-lang/python: 2.5.1-r5
dev-python/pycrypto: 2.0.1-r6
dev-util/ccache: 2.4-r7
sys-apps/baselayout: 1.12.10-r5
sys-apps/sandbox: 1.2.18.1-r2
sys-devel/autoconf: 2.13, 2.61-r1
sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10
sys-devel/binutils: 2.18.50.0.3
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool: 1.5.24
virtual/os-headers: 2.6.23-r3
ACCEPT_KEYWORDS="mips ~mips"
CBUILD="mipsel-softfloat-linux-gnu"
CFLAGS="-Os -mips32 -msoft-float -pipe"
CHOST="mipsel-softfloat-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-Os -mips32 -msoft-float -pipe"
DISTDIR="/mnt/exchg/distfiles"
FEATURES="buildpkg distcc distlocks metadata-transfer sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo"
PKGDIR="/usr/portage/packages/mipsel"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeo
ut=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X aiglx alsa berkdb bzip2 flac gif gtk ipv6 jpeg lcms mesa midi mp3 ogg opengl png qt sdl svg tiff truetype vorbis xcb xorg zlib" ALSA_
PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug
rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm
authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_
filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_
id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="mouse keyboard evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk
hd44780 lb216 lcdm001 mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="fbdev"
Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_F
LAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
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Last edited by roarinelk on Thu Jan 31, 2008 11:46 am; edited 1 time in total |
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Redhatter
Retired Dev
Joined: 20 Sep 2003
Posts: 548
Location: Brisbane, QLD, Australia
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| Posted: Sat Jan 12, 2008 7:31 am Post subject: |
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Can't say I've ever tried any softfloat stuff... everything supported officially by Gentoo works without it.
I've found Qt does fail to compile if it's compiled for processors higher than MIPS1 -- the symptom is uic dying with a Bus Error and taking the entire build with it.
I've rang the bus company so I can issue uic with a new bus timetable... but this will take some time.  Compiling with CFLAGS=CXXFLAGS="-O2 -mips1 -pipe" works.
This is quite a different problem to what you've had, which is a full blown linker error. binutils-2.18 has been known to have quite a few issues, especially the H. J Lu versions (such as what you're running) so I'd suggest switching back to GNU binutils 2.17 (not 2.17.19.532.52.67.3 or whatever).
_________________
Stuart Longland (a.k.a Redhatter, VK4MSL)
I haven't lost my mind - it's backed up on a tape somewhere...
Gentoo/MIPS Cobalt developer, Mozilla herd member. |
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roarinelk
Guru
Joined: 04 Mar 2004
Posts: 520
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| Posted: Sat Jan 12, 2008 3:15 pm Post subject: |
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| Redhatter wrote: | Can't say I've ever tried any softfloat stuff... everything supported officially by Gentoo works without it.
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The Alchemy's don't have FPU, and a test app I have only displays 'nan's with in-kernel emulation. And since rebuilding the whole system
with softfloat, it feels _much_ snappier, especially Xfce.
| Quote: |
I've found Qt does fail to compile if it's compiled for processors higher than MIPS1 -- the symptom is uic dying with a Bus Error and taking the entire build with it.
I've rang the bus company so I can issue uic with a new bus timetable... but this will take some time. ;-) Compiling with CFLAGS=CXXFLAGS="-O2 -mips1 -pipe" works.
|
QT-4.3.3 fails in a similar way; the built uic segfaults on every test the buildscript does (and stops after Xrandr "non"detection)
Actually, both qt-3 and qt-4 build fine with a "standard" (mipsel-unknown-linux-gnu) toolchain, even with binutils-2.18. But as I mentioned, softfloat is faster
at least for my puny fpu-less cpus ;)
| Quote: |
I'd suggest switching back to GNU binutils 2.17 (not 2.17.19.532.52.67.3 or whatever). |
These errors also appear with the default 2.18[-r1] builds in portage; but I'll try with an older version.
Even found a few weeks old patch for some MIPS GOT issues on the binutils ML.
Thanks for your answer,
-- mano |
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roarinelk
Guru
Joined: 04 Mar 2004
Posts: 520
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| Posted: Thu Jan 31, 2008 11:57 am Post subject: |
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Had to recompile glibc and qt-3.3.8 with the following additional CFLAGS:
"-mxgot -mlong-calls". "mxgot" gets rid of all the R_MIPS_GOT16 errors; but then
a single R_MIPS_CALL16 against __fxstat64@GLIBC remained (libc_nonshared.a),
which is eliminated when glibc is recompiled with "-mlong-calls".
I really hate MIPS and its absurd ABI...
EDIT2: KDE-3.5.8 finished without a hitch. It even runs at acceptable speeds with
X on top of unaccelerated dumb framebuffer... |
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