"C compiler cannot create executables" !??!

[apos]

Moved to my experiences to
http://gentoo-wiki.com/HOWTO_Doing_a_hu ... erge_world Gentoo Wiki - HOWTO Doing a huge emerge system - emerge world.
---------------------------------------------------------------------------------------------

Hy gues

So I did everything according to your advice and then:

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emerge -e system (DON'T DO THIS FOR NOW - see down!)

BOOM - after a VERY VERY LONG compile - same fault as before - oh no I thougt.I did: emerge glibc gcc
After a very lon compile, I could emerge e.g. patch. Everything went o.K. now. Whatw was up? What was the problem? What should I do, to prevent this in future?
I headless tried "emerge gcc-config" again.
But sudden - BOOOM. After a new gcc-config, everything was broken again. Another reemerge didn't help this time? I was completly down.

I found out, after reading of http://forums.gentoo.org/viewtopic-t-27 ... rt-75.html, and fiddling around hours with the combination of gcc-config, binutils-config, source /etc/profile, export CFLAGS="" - which won't change ANYTHING , fixing my CLFLAGS in make.conf and adding per package CFLAGS settings in package.cflags made it.

Additionally I found my cflags wrong with march=athlon-xp insted of march=athlon for gcc-3.4.4. See http://gcc.gnu.org/onlinedocs/gcc-3.4.4 ... 64-Options.

[apos]

Moved my experiences to
http://gentoo-wiki.com/HOWTO_Doing_a_hu ... erge_world Gentoo Wiki - HOWTO Doing a huge emerge system - emerge world.
---------------------------------------------------------------------------------------------
Hello again,

For the update from 2005.0 to 2001.5 after my last post i encountered repeatedly problems updating some files.
Here I will add all files that did emerge with an compile error.

# Failed during system emerge
sys-apps/groff-1.19.1-r2 #could not find a working g++
dev-lang/python-2.4.2 # Compiler cannot create executable ...

# Failed during world emerge
media-libs/libvisual-0.2.0 # Compiler cannot create executable ...
dev-libs/libusb-0.1.10a # i686-pc-linux-gnu-g++: O2: No such file or directory
app-pda/pilot-link # QA Notice: insecure RUNPATH...
kde-base/kdelibs # didn't found arts libs
gnome-extra/gtkhtml # bug #114399
net-libs/openh323 # this was a mess, not really solved

## SOLVED ##
Some emerges don't like too much optimization in CFLAGS or the march=athlon. Put this in your /etc/portage/package.cflags:

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# /etc/portage/package.cflags
dev-libs/libusb CFLAGS="-O1 -march=i686 -pipe -fomit-frame-pointer -mno-tls-direct-seg-refs"
sys-apps/groff CFLAGS="-O1 -march=i686 -pipe -fomit-frame-pointer -mno-tls-direct-seg-refs"
dev-lang/python CFLAGS="-O2 -march=i686 -pipe -fomit-frame-pointer -mno-tls-direct-seg-refs"
media-libs/libvisual CFLAGS="-O2 -march=i686 -pipe -fomit-frame-pointer -mno-tls-direct-seg-refs"

app-pda/pilot-link - http://bugs.gentoo.org/show_bug.cgi?id=114437

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perl /usr/portage/dev-lang/perl/files/perl-cleaner all

and

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# /etc/portage/package.use
app-pda/pilot-link -perl

kde-base/kdelibs
didn't find arts-libs => reeimerged arts
so put arts in your emerge before kdelibs

gnome-extra/gtkhtml
BUG #114399
unmerge gtkhtml
unmerge libgtkhtml
remove any gtkhtml and gtkhtml from /var/tmp/portage
emerge gtkhtml and libgtkhtml

OR (in our context)

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emerge unmerge gtkhtml libgtkhtml; rm -rf /var/tmp/portage/*; rm -rf /var/tmp/ccache/*; sync; emerge gtkhtml libgtkhtml ; sh emerge.myWorld

net-libs/openh323
This was an emerge, that shows, how important it is to google.
Openh323 was emerged as a dependence of gnomemeeting.
This depends on ffmpeg, and this had changed. I tried all versions suggested
no effort. So for me it was just possible to unmerge the whole dependence tree:

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emerge unmerge net-libs/openh232 net-libs/linx net-im/gnomemeeting

[lefsha]

"C compiler cannot create executables"

That is not a problem of configuration of user system, but a big problem of
GCC itself and also a big problem of programmers!!!

I would ask you all don't write error messages in that style.
That is very bad way to give user some information about program error!
It is better don't write anything, just a error then this.

The Message should first of all give an INFORMATION about what's really wrong
and probably why.
The message "C compiler cannot create executables" means the same like
the program can not start or it doesn't work. But it's clear without ANY message
beacause of error!

So, please, avoid such messages in your programs at all!!!

In most cases I know, that is the problem of wrong parameters sent to gcc.
And I'm really sure, that people who wrote gcc are able to distinguish the reason
of this error. So why just not to give a message that user used wrong flags
for this version of gcc? It's much easier for user to solve his problem without
bombing of forums with this problem. If you would google for this topics keywords
you will found thousends of similar questions from many people around.

And only becasue of some guy who doesn't know how to write error messages properly!!!

That is my word for today.

[at6]

i found a very simple solution for my problem on the compile error for the sys-libs/db-4.2.52_p4 ebuild. everytime it exits with exitcode 77.

try the following:

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rm /usr/bin/i686-pc-linux-gnu-cc -Rv

good luck marc

[slithy]

I am having the same problem with db, but I very unsure to whether or not to delete that file suggested in the fix above! What are the ramification for doing this? Is it safe?

***EDIT***

I solved it myself and it didn't involve the above fix. First I saw this http://bugs.gentoo.org/show_bug.cgi?id=117611 on bugs.gentoo and found out that the error had to do with eselect-compiler. I am using gcc 3.4.5 and eselect-compiler was showing 3.3.5, so I switch the profile and with

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eselect compiler set 20

with 20 being the 3.4.5 vanilla and db is emerging successfully.

[Gentree]

sound like me too. Odd thing is this pkg comes up as a dep of gcc 3.x and 4.x on my system yet I dont have it installed and have never heard of it.

Also it is hardmasked so there's not way it could have been in there without me knowing.

I'm trying to retrograde from gcc4.x to 3.4 so I think that may be the cause of my problem but I still dont see how this can be a dep. I cant even seem to unmask it !

added to package.keyworks and package.unmask to no avail.

Probably forgetting some trick, pls refresh my memory.

Thx .

[slithy]

I assume you are talking about eselect-compiler? To unmask it I have the entry of <=app-admin/eselect-compiler-2.0.0_rc1-r1 in /etc/portage/package.unmask

[Gentree]

Thanks , I had an entry like that without a version number. It now seems prepared to work so it must have part of the general borkage that was going on.

I was trying to revert my system from gcc-4.1 to 3.4.x which I expected to be a bit tricky.

The compiler problem seemed to be resolved by simply rebooting and doing etc-update . Then I was able to continue emerge -e world.

Obviously some of the core packages were out of sync due to the compiler retrograde.

I took the opertunity to rebuild the whole system on ~x86 and it seems to be going a lot better.

I had that much stuff unmasked specifically it made more sense to go the whole hog.

Thanks for your help.

[keli]

Help!
After I upgraded to GCC 3.4.1-r3, I'm getting

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checking for C compiler default output... configure: error: C compiler cannot create executables

on almost all packages (obviously, exceptions are those, that don't use C at all). I tried everything suggested (and possibly applicable to my case) in this thread, still no luck. I tried gcc-config back and forth (prev. version was 3.3.4), simplifying CFLAGS, nothing. Current system status:

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# emerge --info
Portage 2.0.54 (default-linux/x86/2005.0, gcc-3.4.1, glibc-2.3.5-r2, 2.6.14-gentoo-r2-keli i686)
=================================================================
System uname: 2.6.14-gentoo-r2-keli i686 Intel(R) Celeron(R) M processor         1500MHz
Gentoo Base System version 1.6.13
dev-lang/python:     2.3.5, 2.4.2
sys-apps/sandbox:    1.2.12
sys-devel/autoconf:  2.13, 2.59-r6
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1
sys-devel/binutils:  2.16.1
sys-devel/libtool:   1.5.22
virtual/os-headers:  2.6.11-r2
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=pentium-m -pipe -fomit-frame-pointer -fprefetch-loop-arrays -falign-functions=64"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /var/bind /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/splash /etc/terminfo /etc/env.d"
CXXFLAGS="-O2 -march=pentium-m -pipe -fomit-frame-pointer -fprefetch-loop-arrays -falign-functions=64"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig distlocks sandbox sfperms strict"
GENTOO_MIRRORS="http://ftp.belnet.be/mirror/rsync.gentoo.org/gentoo/ http://ftp.uni-erlangen.de/pub/mirrors/gentoo http://pandemonium.tiscali.de/pub/gentoo/"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X a52 aac aalib acl acpi aim alsa apache2 apm audiofile avi bindist bitmap-fonts bluetooth bonobo bzip2 bzlib calendar cdparanoia cdr crypt ctype cups curl dbase directfb divx4linux dv dvb dvd dvdread emboss encode esd ethereal exif expat fam fbcon ffmpeg foomaticdb freetype ftp gd gif glut gmail gnome gphoto2 gpm gstreamer gtk gtk2 gtkhtml hal iconv idn imagemagick imap imlib innodb jabber java jpeg lcms libg++ libwww mad mhash mikmod mime mmx mmx2 mng motif mozilla mp3 mpeg msn mssql mysql ncurses nls nptl nptlonly nsplugin offensive ogg oggvorbis opengl oscar pam pcmcia pcre pdflib perl php png pnp python quicktime readline ruby samba sdl session slang slp soap sockets speex spell sqlite sse sse2 ssl svg svga symlink tcpd tiff truetype truetype-fonts type1-fonts udev unicode utf8 vorbis wifi win32codecs x86 xml2 xmms xv xvid yahoo zlib userland_GNU kernel_linux elibc_glibc"
Unset:  ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY

The only "hint" I've got is the following:

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# gcc-config -l
 [1] i386-pc-linux-gnu-3.3.4
 [2] i686-pc-linux-gnu-3.4.1 *
# fix_libtool_files.sh 3.3.4
 * Scanning libtool files for hardcoded gcc library paths...
 * Could not get gcc's CHOST!

Any ideas?

[Edit] It seems it's some type of LDPATH issue - ld seems to ignore it, or something.
Here's my /etc/env.d/05gcc I used ldconfig, env-update, tried rebooting ... still no luck

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 # cat /etc/env.d/05gcc
PATH="/usr/i686-pc-linux-gnu/gcc-bin/3.4"
ROOTPATH="/usr/i686-pc-linux-gnu/gcc-bin/3.4"
MANPATH="/usr/share/gcc-data/i686-pc-linux-gnu/3.4/man"
INFOPATH="/usr/share/gcc-data/i686-pc-linux-gnu/3.4/info"
LDPATH="/usr/lib/gcc-lib/i686-pc-linux-gnu/3.4.1"
GCC_SPECS=""

A test compile behaves like this:

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# gcc t.c
/usr/lib/../i686-pc-linux-gnu/bin/ld: crtbegin.o: No such file: No such file or directory
collect2: ld returned 1 exit status

although crtbegin.o exists in the directory specified by LDPATH above.

[keli]

for the record

My problem is solved - after I started digging in the fix_libtool_files.sh script (to see where was it getting the error), I found out, that

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gcc -print-file-name=libgcc.a

didn't work for me. It turns out, (gcc -print-search-dirs) gcc was using the wrong path to look for libraries -

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/usr/lib/i686-pc-linux-gnu/3.4.1/

instead of

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/usr/lib/gcc-lib/i686-pc-linux-gnu/3.4.1/

although it did have the right paths set in /etc/env.d/05gcc (see above). Or am I missing something?
Anyway. A symlink, and everything's working now.

[Edit]
I also needed a

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ln -s /usr/lib/gcc-lib /usr/lib/gcc

. I really don't get it, why I need these (why wasn't it set as expected by emerge?), but anyway ....

[Brooske]

Same error, other solution:

I chose the i686 stage3 tarball
Acidentally deleted /etc/make.conf, started a new one from the .example
where CHOST was i386.

I changed it to i686 and poof, it worked

Btw, this is my first post on the Gentoo Forum. I'm using gentoo since a long time, and I can't say how much I like it.
I found valuable info and help on this forum. So: thank you guys !

[startail]

I had a problem with sys-libs/db 4.3.29-r2 that you can read here, http://forums.gentoo.org/viewtopic-p-35 ... ml#3598248

My problem was also that I got an error that It can not create executables.
But I had a link to ccache in /usr/lib/ccache/bin named i686-pc-linux-gnu-cc that the compiled found and tried to run, but it seems like it doesn't work and thus it crashed. Anyhow, now I hope someone has been helped.

[irish]

After an overnight emerge -uND system I found I had this 'could not compile exe' issue.
I tried various other suggestions on here, all the older compilers etc
When I ran binutils-config I realised I wasn't using the latest version.
Switching to the most recent compiler, then the most recent binutils returned me to a working system.

Man am I relieved!

Woulda been nice if the new binutils had switched me over automatically, particularly if it broke my old one!

YMMV

[basicx]

Hi,

I had the "configure: error: C compiler cannot create executables" error just now, while trying to 'emerge -uvDN world'. The error occurred on the first package that portage was trying to emerge (db-4.2.52_p4-r2).

The solution for me was to comment out the line containing my FEATURES variable in /etc/make.conf (simply add a '#' at the beginning of the line). The variable was set to "ccache". After that, db was emerged fine.

I then interrupted the 'emerge -uvDN world', re-emerged ccache and uncommented FEATURES in /etc/make.conf again. This solved the problem.

Portage is currently compiling happily ever after with ccache enabled...

Thanks to the person way back in this thread who suggested to try commenting out the FEATURES variable!

[bmeagle]

Same here, disabled ccache from my features variable and viola I can emerge db, does anyone know why this is happening?

[changeling]

For what it's worth, my experience:

I tried most of the fixes listed here, what finally fixed it was:

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binutils-config -l

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binutils-config 2

Note that [2] was, for me, 'i686-pc-linux-gnu-2.17', in the 'binutils-config' listing.

In my case, somehow 'binutils-config' was still pointing at 2.16.1, which was no longer on the system. 2.17 had been installed, but binutils had not reconfigured.
Hope this helps some of y'all.

-- Just this guy.

[dalu]

just for the record

after i merged a new gcc version (3.4.6 hardenednopie)

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source /etc/profile

solved the problem

[raulpober]

Getting the same configure error when trying to emerge povray. I have checked /etc/make.conf, gcc-config, and binutils and all of them are setup correctly. Furthermore, I don't get this error when emerging other packages.

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checking for C compiler default output... configure: error: C compiler cannot create executables
See `config.log' for more details.


===============================================================================
POV-Ray 3.6.1 has been configured with the following features:
  I/O restrictions: enabled
  X Window display: enabled
  SVGAlib display : disabled

Type 'make' to build, and 'make install' to install all files in the hierarchy
/usr
===============================================================================

 * Building povray
make  all-recursive
make[1]: Entering directory `/var/tmp/portage/povray-3.6.1-r1/work/povray-3.6.1'
Making all in libraries
make[2]: Entering directory `/var/tmp/portage/povray-3.6.1-r1/work/povray-3.6.1/libraries'
Making all in png
make[3]: Entering directory `/var/tmp/portage/povray-3.6.1-r1/work/povray-3.6.1/libraries/png'
make[3]: *** No rule to make target `all'.  Stop.
make[3]: Leaving directory `/var/tmp/portage/povray-3.6.1-r1/work/povray-3.6.1/libraries/png'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/var/tmp/portage/povray-3.6.1-r1/work/povray-3.6.1/libraries'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/povray-3.6.1-r1/work/povray-3.6.1'
make: *** [all] Error 2

!!! ERROR: media-gfx/povray-3.6.1-r1 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  povray-3.6.1-r1.ebuild, line 51:   Called die

!!! build failed
!!! If you need support, post the topmost build error, and the call stack if relevant.

[raulpober]

Turns out this is a problem with the povray ebuild. The solution can be found here:

http://forums.gentoo.org/viewtopic-p-37 ... ml#3766204

[bytenirvana]

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# gcc-config

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# gcc-config 1

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# source /etc/profile

thx. I stumpled on this tonight, but the solution was much easier then exspected!

[Sedrik]

Hi all

So I'm working on my Intel core 2 duo x86_64 install and when I'm about to do the first emerge (syslog-ng) I get that funny error message.

Sine I'm doing this on my laptop with only 2 mouse buttons I'm finding it hard to copy and paste stuff for you

This is what I have tried..
Changing -march to pentium4m instead of core2
rebuild gcc
rebuild kernel

I don't know what else is wrong Please give me some hints on what the error may be.

[yabbadabbadont]

Yours is a duplicate of: http://forums.gentoo.org/viewtopic-t-27 ... ables.html

Read through that extensive thread and see if any of the solutions provided there work for you.

Edit: this is so common, there is an FAQ entry for it... http://forums.gentoo.org/viewtopic-t-29 ... ables.html

[nixnut]

merged above two posts here.

[Mgiese]

same error : checking for C compiler default output file name... configure: error: C compiler cannot create executables


"binutils-config -l" told me i have only i386-pc-linux-gnu
so i changed everything in it into i686 and now it is compiling lets see howlong hehe

thx at all involved

[sylum]

So, running emerge I get something similar to the problem everyone here is having:

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checking for C compiler default output file name... configure: error: C compiler cannot create executables

So, I've tried reinstalling glibc (cause I saw that on some forum). That didn't help. I'm trying to update my gcc to 4.1.1 ... but it gives me:

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checking for gcc... (cached) gcc
checking whether the C compiler (gcc  ) works... no
configure: error: installation or configuration problem: C compiler cannot create executables.

OK, fine. I try to run "gcc-config -c" (to get current gcc profile version) and get:

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 * gcc-config: No gcc profile is active!
 * gcc-config: No gcc profile is active; please select one!

OK, well, this could very well be the cause of my problem. Great, so lets select a profile I'm thinking... "gcc-config -l" (list available):

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 * gcc-config: No gcc profile is active!
 * gcc-config: No gcc profile is active; please select one!

Same thing. So, dumb question. How do I generate a gcc profile???