Misleading configure failure GLIB_SIZEOF_SIZE_T

Misleading configure failure GLIB_SIZEOF_SIZE_T

[Markus Armbruster]

I just ran into this failure:

    $ ../configure --disable-tools --disable-system --static

    ERROR: sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T.
           You probably need to set PKG_CONFIG_LIBDIR
           to point to the right pkg-config files for your
           build target

My config.log ends with

    cc -std=gnu99 -Wall -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -Wold-style-declaration -Wold-style-definition -Wtype-limits -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wempty-body -Wnested-externs -Wendif-labels -Wexpansion-to-defined -Wimplicit-fallthrough=2 -Wno-missing-include-dirs -Wno-shift-negative-value -Wno-psabi -fstack-protector-strong -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -o config-temp/qemu-conf.exe config-temp/qemu-conf.c -static -m64 -fstack-protector-strong -lgthread-2.0 -pthread -lglib-2.0 -pthread -lpcre -pthread
    /usr/bin/ld: cannot find -lgthread-2.0
    /usr/bin/ld: cannot find -lglib-2.0
    /usr/bin/ld: cannot find -lpcre
    /usr/bin/ld: cannot find -lpthread
    /usr/bin/ld: cannot find -lc
    collect2: error: ld returned 1 exit status

I need to install more libraries.

The error message "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T." is
wrong.

Re: Misleading configure failure GLIB_SIZEOF_SIZE_T

[Peter Maydell]

On Thu, 18 Mar 2021 at 12:53, Markus Armbruster <armbru@redhat.com> wrote:
>
> I just ran into this failure:
>
>     $ ../configure --disable-tools --disable-system --static
>
>     ERROR: sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T.
>            You probably need to set PKG_CONFIG_LIBDIR
>            to point to the right pkg-config files for your
>            build target

The interesting question here is why the earlier configure check:

write_c_skeleton;
if compile_object ; then
  : C compiler works ok
else
    error_exit "\"$cc\" either does not exist or does not work"
fi
if ! compile_prog ; then
    error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
fi

didn't fail. That is deliberately early in configure in an attempt
to capture this kind of "the compiler can't link anything" case
before we get into specific feature testing.

thanks
-- PMM

Re: Misleading configure failure GLIB_SIZEOF_SIZE_T

[Markus Armbruster]

Peter Maydell <peter.maydell@linaro.org> writes:

> On Thu, 18 Mar 2021 at 12:53, Markus Armbruster <armbru@redhat.com> wrote:
>>
>> I just ran into this failure:
>>
>>     $ ../configure --disable-tools --disable-system --static
>>
>>     ERROR: sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T.
>>            You probably need to set PKG_CONFIG_LIBDIR
>>            to point to the right pkg-config files for your
>>            build target
>
> The interesting question here is why the earlier configure check:
>
> write_c_skeleton;
> if compile_object ; then
>   : C compiler works ok
> else
>     error_exit "\"$cc\" either does not exist or does not work"
> fi
> if ! compile_prog ; then
>     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
> fi
>
> didn't fail. That is deliberately early in configure in an attempt
> to capture this kind of "the compiler can't link anything" case
> before we get into specific feature testing.

I've since installed the libraries...  uninstalling glibc-static for a
quick check...  Yep, dies in the GLIB_SIZEOF_SIZE_T test.  Let's have a
look at my config.log.  To more easily find the check you pointed out, I
stuck "exit 42" right behind it, and get:

    $ ./config.status 
    [Exit 42 ]
    $ echo $?
    42
    $ tail -n 4 config.log 

    funcs: do_compiler do_cc compile_prog main
    lines: 145 183 2017 0
    cc -std=gnu99 -Wall -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -o config-temp/qemu-conf.exe config-temp/qemu-conf.c -m64
    $ cat config-temp/qemu-conf.c 
    int main(void) { return 0; }

Run the compiler by hand to confirm:

    $ cc -std=gnu99 -Wall -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -o config-temp/qemu-conf.exe config-temp/qemu-conf.c -m64
    $ echo $?
    0

The test program doesn't actually need libc, so not having glibc-static
installed doesn't bother the linker.

If it used something from libc, then I'd expect the issue to merely
shift to the next library.  Remember, the failure I reported attempts to
link with -lgthread-2.0 -pthread -lglib-2.0 -pthread -lpcre -pthread.

Re: Misleading configure failure GLIB_SIZEOF_SIZE_T

[Paolo Bonzini]

On 19/03/21 10:40, Markus Armbruster wrote:
>      $ cc -std=gnu99 -Wall -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -o config-temp/qemu-conf.exe config-temp/qemu-conf.c -m64
>      $ echo $?
>      0
> 
> The test program doesn't actually need libc, so not having glibc-static
> installed doesn't bother the linker.

I guess the bug is that the invocation does not use -static?

Paolo

Re: Misleading configure failure GLIB_SIZEOF_SIZE_T

[Markus Armbruster]

Paolo Bonzini <pbonzini@redhat.com> writes:

> On 19/03/21 10:40, Markus Armbruster wrote:
>>      $ cc -std=gnu99 -Wall -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -o config-temp/qemu-conf.exe config-temp/qemu-conf.c -m64
>>      $ echo $?
>>      0
>> The test program doesn't actually need libc, so not having
>> glibc-static
>> installed doesn't bother the linker.
>
> I guess the bug is that the invocation does not use -static?

I totally missed that %-}

With -static, cc fails nicely:

    $ cc -std=gnu99 -Wall -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv -o config-temp/qemu-conf.exe config-temp/qemu-conf.c -m64 -static
    /usr/bin/ld: cannot find -lc
    collect2: error: ld returned 1 exit status

Good.  Next test: I install glibc-static and uninstall glib2-static.

    $ ./config.status 

    ERROR: sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T.
           You probably need to set PKG_CONFIG_LIBDIR
           to point to the right pkg-config files for your
           build target

*Boing*