bugs.kde.org is ill fitted for such "bugs" - The error is

Linking CXX shared library ../lib/libkhtml.so
/usr/lib/gcc/i686-pc-linux-gnu/4.2.3/../../../../i686-pc-linux-gnu/bin/ld:CMakeFiles/khtml.dir/html/html_canvasimpl.o:
file format not recognized; treating as linker script 

it looks like the .o was not generated.
Please look at this /usr/lib/gcc/i686-pc-linux-gnu/4.2.3/../../../../i686-pc-linux-gnu/bin/ld:CMakeFiles/khtml.dir/html/html_canvasimpl.o file and see if it is correctly generated

Also: did you compile previous KDE 4 Gentoo versions (4.0.1 for ex)? Were they OK?

Thank you very much for such a fast response and sorry if I didn't post this in the right place.

I was able to compile 4.0.1 without a problem and I am not quite sure how to check whether /usr/lib/gcc/i686-pc-linux-gnu/4.2.3/../../../../i686-pc-linux-gnu/bin/ld:CMakeFiles/khtml.dir/html/html_canvasimpl.o files/khtml.dir/html/html_canvasimpl.o got generated correctly. I was able to get to /usr/i686-pc-linux-gnu/bin, but am not sure what do then. 

Thanks for replying once again!

Right it's not a filename. The filename is CMakeFiles/khtml.dir/html/html_canvasimpl.o, the stuff before that is a syntax error.
You should do VERBOSE=1 make to see the full linker line, there's something going wrong in there.

Thanks for the tip! Here is my rather long output:
Linking CXX shared library ../lib/libkhtml.so
cd /var/tmp/portage/kde-base/kdelibs-4.0.2/work/kdelibs_build/khtml && /usr/bin/cmake -P CMakeFiles/khtml.dir/cmake_clean_target.cmake
cd /var/tmp/portage/kde-base/kdelibs-4.0.2/work/kdelibs_build/khtml && /usr/bin/cmake -E cmake_link_script CMakeFiles/khtml.dir/link.txt --verbose=1
/usr/lib/ccache/bin/i686-pc-linux-gnu-g++  -fPIC -O2 -march=i686 -pipe  -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align -Wchar-subscripts -Wall-W -Wpointer-arith -Wformat-security -fno-exceptions -fno-check-new -fno-common -Woverloaded-virtual -fvisibility=hidden -fvisibility-inlines-hidden  -fexceptions -O2 -DNDEBUG -DQT_NO_DEBUG -Wl,--enable-new-dtags -Wl,--fatal-warnings -Wl,--no-undefined -lc  -shared -Wl,-soname,libkhtml.so.5 -o ../lib/libkhtml.so.5.0.0 "CMakeFiles/khtml.dir/khtml_automoc.o" "CMakeFiles/khtml.dir/khtmlview.o" "CMakeFiles/khtml.dir/khtml_part.o" "CMakeFiles/khtml.dir/khtml_run.o" "CMakeFiles/khtml.dir/khtml_global.o" "CMakeFiles/khtml.dir/khtml_settings.o" "CMakeFiles/khtml.dir/khtml_events.o" "CMakeFiles/khtml.dir/khtml_ext.o" "CMakeFiles/khtml.dir/khtml_pagecache.o" "CMakeFiles/khtml.dir/khtml_printsettings.o" "CMakeFiles/khtml.dir/khtml_iface.o" "CMakeFiles/khtml.dir/khtmlimage.o" "CMakeFiles/khtml.dir/kjserrordlg.o" "CMakeFiles/khtml.dir/xml/dom_docimpl.o" "CMakeFiles/khtml.dir/xml/dom_nodeimpl.o" "CMakeFiles/khtml.dir/xml/dom_textimpl.o" "CMakeFiles/khtml.dir/xml/dom_elementimpl.o" "CMakeFiles/khtml.dir/xml/dom_stringimpl.o" "CMakeFiles/khtml.dir/xml/dom2_rangeimpl.o" "CMakeFiles/khtml.dir/xml/dom2_traversalimpl.o" "CMakeFiles/khtml.dir/xml/xml_tokenizer.o" "CMakeFiles/khtml.dir/xml/dom_xmlimpl.o" "CMakeFiles/khtml.dir/xml/dom2_eventsimpl.o" "CMakeFiles/khtml.dir/xml/dom2_viewsimpl.o" "CMakeFiles/khtml.dir/xml/dom_restyler.o" "CMakeFiles/khtml.dir/html/htmlparser.o" "CMakeFiles/khtml.dir/html/htmltokenizer.o" "CMakeFiles/khtml.dir/html/dtd.o" "CMakeFiles/khtml.dir/html/html_headimpl.o" "CMakeFiles/khtml.dir/html/html_blockimpl.o" "CMakeFiles/khtml.dir/html/html_elementimpl.o" "CMakeFiles/khtml.dir/html/html_inlineimpl.o" "CMakeFiles/khtml.dir/html/html_documentimpl.o" "CMakeFiles/khtml.dir/html/html_baseimpl.o" "CMakeFiles/khtml.dir/html/html_imageimpl.o" "CMakeFiles/khtml.dir/html/html_listimpl.o" "CMakeFiles/khtml.dir/html/html_miscimpl.o" "CMakeFiles/khtml.dir/html/html_formimpl.o" "CMakeFiles/khtml.dir/html/html_objectimpl.o" "CMakeFiles/khtml.dir/html/html_tableimpl.o" "CMakeFiles/khtml.dir/html/html_canvasimpl.o" "CMakeFiles/khtml.dir/rendering/bidi.o" "CMakeFiles/khtml.dir/rendering/break_lines.o" "CMakeFiles/khtml.dir/rendering/render_block.o" "CMakeFiles/khtml.dir/rendering/render_inline.o" "CMakeFiles/khtml.dir/rendering/render_style.o" "CMakeFiles/khtml.dir/rendering/render_object.o" "CMakeFiles/khtml.dir/rendering/render_container.o" "CMakeFiles/khtml.dir/rendering/render_box.o" "CMakeFiles/khtml.dir/rendering/render_flow.o" "CMakeFiles/khtml.dir/rendering/render_text.o" "CMakeFiles/khtml.dir/rendering/render_arena.o" "CMakeFiles/khtml.dir/rendering/render_layer.o" "CMakeFiles/khtml.dir/rendering/render_image.o" "CMakeFiles/khtml.dir/rendering/render_table.o" "CMakeFiles/khtml.dir/rendering/table_layout.o" "CMakeFiles/khtml.dir/rendering/render_replaced.o" "CMakeFiles/khtml.dir/rendering/render_form.o" "CMakeFiles/khtml.dir/rendering/render_list.o" "CMakeFiles/khtml.dir/rendering/render_canvas.o" "CMakeFiles/khtml.dir/rendering/render_frames.o" "CMakeFiles/khtml.dir/rendering/render_br.o" "CMakeFiles/khtml.dir/rendering/render_body.o" "CMakeFiles/khtml.dir/rendering/font.o" "CMakeFiles/khtml.dir/rendering/render_line.o" "CMakeFiles/khtml.dir/rendering/render_generated.o" "CMakeFiles/khtml.dir/rendering/enumerate.o" "CMakeFiles/khtml.dir/rendering/counter_tree.o" "CMakeFiles/khtml.dir/rendering/render_canvasimage.o" "CMakeFiles/khtml.dir/css/css_stylesheetimpl.o" "CMakeFiles/khtml.dir/css/css_ruleimpl.o" "CMakeFiles/khtml.dir/css/css_valueimpl.o" "CMakeFiles/khtml.dir/css/css_base.o" "CMakeFiles/khtml.dir/css/cssparser.o" "CMakeFiles/khtml.dir/css/cssstyleselector.o" "CMakeFiles/khtml.dir/css/csshelper.o" "CMakeFiles/khtml.dir/css/parser.o" "CMakeFiles/khtml.dir/css/css_renderstyledeclarationimpl.o" "CMakeFiles/khtml.dir/misc/loader.o" "CMakeFiles/khtml.dir/misc/htmlhashes.o" "CMakeFiles/khtml.dir/misc/helper.o" "CMakeFiles/khtml.dir/misc/arena.o" "CMakeFiles/khtml.dir/misc/stringit.o" "CMakeFiles/khtml.dir/misc/paintbuffer.o" "CMakeFiles/khtml.dir/misc/imagefilter.o" "CMakeFiles/khtml.dir/ecma/kjs_binding.o" "CMakeFiles/khtml.dir/ecma/kjs_dom.o" "CMakeFiles/khtml.dir/ecma/kjs_html.o" "CMakeFiles/khtml.dir/ecma/kjs_window.o" "CMakeFiles/khtml.dir/ecma/kjs_navigator.o" "CMakeFiles/khtml.dir/ecma/kjs_proxy.o" "CMakeFiles/khtml.dir/ecma/kjs_css.o" "CMakeFiles/khtml.dir/ecma/kjs_range.o" "CMakeFiles/khtml.dir/ecma/kjs_traversal.o" "CMakeFiles/khtml.dir/ecma/kjs_events.o" "CMakeFiles/khtml.dir/ecma/kjs_views.o" "CMakeFiles/khtml.dir/ecma/kjs_mozilla.o" "CMakeFiles/khtml.dir/ecma/xmlhttprequest.o" "CMakeFiles/khtml.dir/ecma/xmlserializer.o" "CMakeFiles/khtml.dir/ecma/domparser.o" "CMakeFiles/khtml.dir/ecma/kjs_context2d.o" "CMakeFiles/khtml.dir/ecma/kjs_audio.o" "CMakeFiles/khtml.dir/ecma/debugger/debugwindow.o" "CMakeFiles/khtml.dir/ecma/debugger/debugdocument.o" "CMakeFiles/khtml.dir/ecma/debugger/consoledock.o" "CMakeFiles/khtml.dir/ecma/debugger/breakpointsdock.o" "CMakeFiles/khtml.dir/ecma/debugger/callstackdock.o" "CMakeFiles/khtml.dir/ecma/debugger/localvariabledock.o" "CMakeFiles/khtml.dir/ecma/debugger/scriptsdock.o" "CMakeFiles/khtml.dir/ecma/debugger/value2string.o" "CMakeFiles/khtml.dir/ecma/debugger/errordlg.o" "CMakeFiles/khtml.dir/ecma/debugger/interpreter_ctx.o" "CMakeFiles/khtml.dir/qrc_debugger.o" "CMakeFiles/khtml.dir/dom/dom_misc.o" "CMakeFiles/khtml.dir/dom/html_block.o" "CMakeFiles/khtml.dir/dom/html_inline.o" "CMakeFiles/khtml.dir/dom/css_rule.o" "CMakeFiles/khtml.dir/dom/dom_node.o" "CMakeFiles/khtml.dir/dom/html_document.o" "CMakeFiles/khtml.dir/dom/html_list.o" "CMakeFiles/khtml.dir/dom/css_stylesheet.o" "CMakeFiles/khtml.dir/dom/dom_string.o" "CMakeFiles/khtml.dir/dom/html_element.o" "CMakeFiles/khtml.dir/dom/html_misc.o" "CMakeFiles/khtml.dir/dom/css_value.o" "CMakeFiles/khtml.dir/dom/dom_text.o" "CMakeFiles/khtml.dir/dom/html_object.o" "CMakeFiles/khtml.dir/dom/dom_doc.o" "CMakeFiles/khtml.dir/dom/dom_xml.o" "CMakeFiles/khtml.dir/dom/html_head.o" "CMakeFiles/khtml.dir/dom/dom_element.o" "CMakeFiles/khtml.dir/dom/html_base.o" "CMakeFiles/khtml.dir/dom/html_image.o" "CMakeFiles/khtml.dir/dom/html_form.o" "CMakeFiles/khtml.dir/dom/dom2_range.o" "CMakeFiles/khtml.dir/dom/html_table.o" "CMakeFiles/khtml.dir/dom/dom2_traversal.o" "CMakeFiles/khtml.dir/dom/dom2_events.o" "CMakeFiles/khtml.dir/dom/dom2_views.o" "CMakeFiles/khtml.dir/imload/imageplane.o" "CMakeFiles/khtml.dir/imload/rawimageplane.o" "CMakeFiles/khtml.dir/imload/scaledimageplane.o" "CMakeFiles/khtml.dir/imload/pixmapplane.o" "CMakeFiles/khtml.dir/imload/animprovider.o" "CMakeFiles/khtml.dir/imload/imagepainter.o" "CMakeFiles/khtml.dir/imload/updater.o" "CMakeFiles/khtml.dir/imload/image.o" "CMakeFiles/khtml.dir/imload/imagemanager.o" "CMakeFiles/khtml.dir/imload/animtimer.o" "CMakeFiles/khtml.dir/imload/canvasimage.o" "CMakeFiles/khtml.dir/imload/decoders/jpegloader.o" "CMakeFiles/khtml.dir/imload/decoders/pngloader.o" "CMakeFiles/khtml.dir/imload/decoders/gifloader.o" "CMakeFiles/khtml.dir/khtmlpartadaptor.o" "CMakeFiles/khtml.dir/kcookiejar_interface.o"-L/var/tmp/portage/kde-base/kdelibs-4.0.2/work/kdelibs_build/lib -L/usr/lib/qt4 -lQtCore -lpthread -lkdecore -lkdeui -lkio -lkparts -lktexteditor -lkjs -lQtDBus -lQtCore -lpthread -lQtGui -lphonon -ljpeg -lgif -lpng -lz -lkparts -lkio -lkdecore -lkdeui -lQtSvg -lSM -lICE -lX11 -lXext -lXft -lXau -lXdmcp -lXpm -lXtst -lXcursor -lXfixes -lstreamanalyzer -lstreams -lkdecore -lQtNetwork -lbz2 -lresolv -lsolid -lQtXml -lfam -lacl -lattr -lXrender -lm -lpcre -lpcreposix -lQtDBus -lQtCore -lpthread -lQtGui -Wl,-rpath,/var/tmp/portage/kde-base/kdelibs-4.0.2/work/kdelibs_build/lib:/usr/lib/qt4
/usr/lib/gcc/i686-pc-linux-gnu/4.2.3/../../../../i686-pc-linux-gnu/bin/ld:CMakeFiles/khtml.dir/html/html_canvasimpl.o: file format not recognized; treating as linker script
/usr/lib/gcc/i686-pc-linux-gnu/4.2.3/../../../../i686-pc-linux-gnu/bin/ld:CMakeFiles/khtml.dir/html/html_canvasimpl.o:1: syntax error
collect2: ld returned 1 exit status
make[2]: *** [lib/libkhtml.so.5.0.0] Error 1
make[2]: Leaving directory `/var/tmp/portage/kde-base/kdelibs-4.0.2/work/kdelibs_build'
make[1]: *** [khtml/CMakeFiles/khtml.dir/all] Error 2
make[1]: Leaving directory `/var/tmp/portage/kde-base/kdelibs-4.0.2/work/kdelibs_build'
make: *** [all] Error 2
 *
 * ERROR: kde-base/kdelibs-4.0.2 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 2594:  Called kde4-base_src_compile
 *             environment, line 1899:  Called kde4-base_src_make
 *             environment, line 1929:  Called cmake-utils_src_make
 *             environment, line  678:  Called die
 * The specific snippet of code:
 *           emake "$@" || die "Make failed!";
 *  The die message:
 *   Make failed!
 *
 * 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/kde-base/kdelibs-4.0.2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/kde-base/kdelibs-4.0.2/temp/environment'.
 *

I was wrong, the link line is ok, it's your CMakeFiles/khtml.dir/html/html_canvasimpl.o file which is corrupt  [disk full, maybe?]
Use the "file" command on that file to see which kind of file it is.
Then try deleting that file and doing make again.
Or does this happen even if you rebuild all of kdelibs from scratch?

Hi David!

My disk is definitely not full and this problem happens every time when I attempt to build kdelibs from scratch. What I don't quite understand is where I can actually find CMakeFiles/khtml.dir/html/html_canvasimpl.o file. Would you mind walking me through it? Sorry for asking too many questions!

I can compile fine with similar configuration.
Is it gcc-4.2.3 problem?..
Here it is for your references:

# emerge --info
Portage 2.1.4.4 (default-linux/x86/2007.0/desktop, gcc-4.1.2, glibc-2.6.1-r0, 2.6.23-tuxonice-r6 i686)
=================================================================
System uname: 2.6.23-tuxonice-r6 i686 Intel(R) Pentium(R) M processor 1.60GHz
Timestamp of tree: Wed, 12 Mar 2008 21:00:01 +0000
app-shells/bash:     3.2_p17-r1
dev-java/java-config: 1.3.7, 2.1.4
dev-lang/python:     2.3.5-r3, 2.4.4-r9
dev-python/pycrypto: 2.0.1-r6
sys-apps/baselayout: 2.0.0_rc6-r1
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.13, 2.61-r1
sys-devel/automake:  1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.23-r3
ACCEPT_KEYWORDS="x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=pentium4m -pipe -msse2 -mfpmath=sse"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/4.0/env /usr/kde/4.0/share/config /usr/kde/4.0/shutdown /usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/splash /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-O2 -march=pentium4m -pipe -msse2 -mfpmath=sse"
DISTDIR="/usr/portage/distfiles"
FEATURES="distlocks metadata-transfer parallel-fetch sandbox sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo"
LANG="en_US.utf8"
LC_ALL="en_US.utf8"
LINGUAS="en ru"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local/layman/sunrise /usr/portage/local/layman/sectools /usr/local/portage"
SYNC="rsync://gentoo.o0o.nu/gentoo-portage"
USE="X a52 aac acl acpi alsa bash-completion berkdb bzip2 cairo cdr cli cracklib crypt dbus dri dvd dvdr dvdread eds emboss encode evo fam ffmpeg firefox flac fortran gdbm gif gpm hal iconv ipv6 isdnlog jpeg kde kerberos ldap logitech-mouse mad midimikmod mmx mng mp3 mpeg mudflap ncurses nls nptl nptlonly nsplugin ogg opengl openmp pam pcmcia pcre pdf perl png pppd python qt3support qt4 quicktime readline reflection samba sdl session speex spell spl sse sse2 ssl svg tcpd theora threads tiff truetype unicode vorbis wifi win32codecs x86 xcomposite xine xml xorg xv zlib" ALSA_CARDS="intel8x0" 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 auth_digest authn_anon authn_dbd 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 dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cachemime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en ru" LIRC_DEVICES="sir" USERLAND="GNU" VIDEO_CARDS="i810 i915 vesa radeon"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LDFLAGS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Hm.. I didn't compile it from scratch. So I'm not sure if I'm useful here. Sorry.

This was precisely the problem! I was just trying a different version of gcc when I got your message. So, kdelibs compile on gcc 4.2.2. 4.2.3 fails.

I guess, this bug can be closed.

On Thursday 13 March 2008, Andriy Baranskyy wrote:
> where I can actually find CMakeFiles/khtml.dir/html/html_canvasimpl.o file


find is your friend... it's in your build dir, under kdelibs/khtml/

For those interested, it's just another dupe of
https://bugs.gentoo.org/64615, "KDE packages fail to build because of mixing different GCC versions".

-Ingmar