Re: [PATCH] libgomp: Revise libgomp/Fortran support conditionals

Hi Peter!

On 2026-07-30T03:06:39+0200, Peter0x44 <[email protected]> wrote:
> On 2026-07-29 10:41, Thomas Schwinge wrote:
>> [...] revise libgomp/Fortran support conditionals generally,=20

> Unfortunately, this patch doesn't seem to fix the problem in my=20
> circumstance. The CI run here:
> https://github.com/Peter0x44/w64devkit/commit/22a780033053c041af05a6ff9c3=
012454ea628fe
> https://github.com/Peter0x44/w64devkit/actions/runs/30501305847/job/90741=
350286#step:9:29
>
>
> Still produces a toolchain which fails with:
>
> gfortran bruh.f90 -fopenmp
> bruh.f90:2:7:
>
>      2 |   use omp_lib
>        |       1
> Fatal Error: Cannot open module file 'omp_lib.mod' for reading at (1):=20
> No such file or directory
> compilation terminated.
>
>  From this issue.
>
> https://github.com/skeeto/w64devkit/issues/395

I'm confirming that broken behavior with your
<https://github.com/Peter0x44/w64devkit/blob/22a780033053c041af05a6ff9c3012=
454ea628fe/src/crossgcc-libgomp-gfortran-path.patch>.

But: that 'crossgcc-libgomp-gfortran-path.patch' isn't the patch I've
sent, but is some mangled variant of it, and applying that one doesn't
change 'libgomp/configure.ac', 'libgomp/configure' in the expected way.
Things certainly work fine if you correctly apply the patch I've sent:

    $ find ~/W/ -name omp_lib\*
    [...]/W/lib/gcc/x86_64-w64-mingw32/16.1.0/finclude/omp_lib.mod
    [...]/W/lib/gcc/x86_64-w64-mingw32/16.1.0/finclude/omp_lib_kinds.mod
    [...]/W/lib/gcc/x86_64-w64-mingw32/16.1.0/finclude/omp_lib.f90
    [...]/W/lib/gcc/x86_64-w64-mingw32/16.1.0/finclude/omp_lib.h
    $ WINEPATH=3D$HOME/W/bin wine64 gfortran.exe -fopenmp o.f90
    0138:fixme:ntdll:NtQuerySystemInformation info_class SYSTEM_PERFORMANCE=
_INFORMATION
    $ OMP_NUM_THREADS=3D5 wine64 ./a.exe
     Hello from thread           3
     Hello from thread           2
     Hello from thread           1
     Hello from thread           4
     Hello from thread           0


Gr=C3=BC=C3=9Fe
 Thomas