Re: [gentoo-user] C compiler cannot create executables

[Dale]

Jack wrote:
> On 9/10/22 14:49, Dale wrote:
>> Jack wrote:
>>> I now get this error trying to emerge two different packages:
>>> libofx-0.10.7 and gnupg (both 2.2.39 and 2.3.6).  It might also be the
>>> same problem for a few bugs on b.g.o found by searching on "cannot
>>> create exectuables."
>>>
>>> The relevant lines from build.log are
>>>
>>> checking for x86_64-pc-linux-gnu-gcc... x86_64-pc-linux-gnu-gcc
>>> checking whether the C compiler works... no
>>> configure: error: in
>>> `/var/tmp/portage/dev-libs/libofx-0.10.7/work/libofx-0.10.7':
>>> configure: error: C compiler cannot create executables
>>> See `config.log' for more details
>>>
>>> and from config.log:
>>>
>>> Thread model: posix
>>> Supported LTO compression algorithms: zlib
>>> gcc version 11.3.0 (Gentoo 11.3.0 p4)
>>> configure:2952: $? = 0
>>> configure:2941: x86_64-pc-linux-gnu-gcc -V >&5
>>> x86_64-pc-linux-gnu-gcc: error: unrecognized command-line option '-V'
>>> x86_64-pc-linux-gnu-gcc: fatal error: no input files
>>> compilation terminated.
>>> configure:2952: $? = 1
>>> configure:2941: x86_64-pc-linux-gnu-gcc -qversion >&5
>>> x86_64-pc-linux-gnu-gcc: error: unrecognized command-line option
>>> '-qversion'; did you mean '--version'?
>>> x86_64-pc-linux-gnu-gcc: fatal error: no input files
>>> compilation terminated.
>>> configure:2952: $? = 1
>>> configure:2972: checking whether the C compiler works
>>> configure:2994: x86_64-pc-linux-gnu-gcc -march=native -O2 -pipe -og
>>> -ggdb  -Wl,-O1 -Wl,--as-needed conftest.c  >&5
>>> configure:2998: $? = 0
>>> configure:3036: result: no
>>> configure: failed program was:
>>> | /* confdefs.h */
>>> | #define PACKAGE_NAME "libofx"
>>> | #define PACKAGE_TARNAME "libofx"
>>> | #define PACKAGE_VERSION "0.10.7"
>>> | #define PACKAGE_STRING "libofx 0.10.7"
>>> | #define PACKAGE_BUGREPORT ""
>>> | #define PACKAGE_URL ""
>>> | /* end confdefs.h.  */
>>> |
>>> | int
>>> | main ()
>>> | {
>>> |
>>> |   ;
>>> |   return 0;
>>> | }
>>> configure:3041: error: in
>>> `/var/tmp/portage/dev-libs/libofx-0.10.7/work/libofx-0.10.7':
>>> configure:3043: error: C compiler cannot create executables
>>> See `config.log' for more details
>>>
>>> The thing I find curious is that it appears to me that the output of
>>> the test compile is a file called "g" which I don't recall ever
>>> seeing, and so I wonder if the problem is that something has changed
>>> with gcc defaults and configure does not yet recognize that change.  I
>>> also don't know the  significance of the two "fatal error: no input
>>> files".
>>>
>>> The fact that this happens with two unrelated packages suggests that
>>> it's  not specific to either of them, but something in my system or
>>> configuration.
>>>
>>> Any thoughts or suggestions?
>>>
>>> Jack
>>>
>>>
>>>
>>
>> I ran into this ages ago.  I think the fix was to reset which compiler
>> it is set to use.  I used to keep two installed, in case one would fail
>> or some package couldn't build with a newer version yet.  If I recall
>> correctly, I would list the available options with gcc-config -l and
>> then if two are available, set to older one and then change back or if
>> only one is installed, just set it to the one you have.  It's been a
>> good while and it could be that the cause of the problem has changed but
>> I don't think it will hurt anything to try this.  I think some settings
>> gets messed up and resetting it fixes it.
>>
>> Hope that helps.  If not, clueless.  :/
>
> Thanks Dale, but I only have one version of gcc installed and both
> gcc-config and binutils-config show only one option.
>
> I do believe that David Haller pegged the problem, and I'll respond to
> his post after confirming.
>
> Jack
>
>
>


If your other option fails, just gcc-config 1 and see if it helps.  If
you have only one installed, it still resets when you do it.  This is
what it looks like on mine just now. 


root@fireball / # gcc-config -l
 [1] x86_64-pc-linux-gnu-11.3.0 *
root@fireball / # gcc-config 1
 * Switching native-compiler to x86_64-pc-linux-gnu-11.3.0 ...
 * Backing up '//usr/lib/gcc/x86_64-pc-linux-gnu/11.3.0/libgcc_s.so.1'
to '/lib64                                                             
[ ok ]
root@fireball / #

Just another option.  May help, may not.  :-D  I meant to include before
where I did it but forgot.  I remembered this time.  lol

Dale

:-)  :-)