Hi!

On 2022-06-08T05:56:02+0200, Tobias Burnus <Tobias_Burnus@mentor.com> wrote:
> This is based on Chung-Lin's patch at https://gcc.gnu.org/pipermail/gcc-patches/2021-January/563393.html

> PS: I have not fully tested the intelmic version.

As part of my standard testing, I'm reporting that it got completely
broken.  ;'-) Your commit 683f11843974f0bdf42f79cdcbb0c2b43c7b81b0
"OpenMP: Move omp requires checks to libgomp" states:
"When the device lto1 runs, it extracts the data for mkoffload. The
latter than passes the value on to GOMP_offload_register_ver."
That's not implemented for Intel MIC 'mkoffload', so we always run into
'gcc/lto-cgraph.cc:input_offload_tables':

    +#ifdef ACCEL_COMPILER
    +  char *omp_requires_file = getenv ("GCC_OFFLOAD_OMP_REQUIRES_FILE");
    +  if (omp_requires_file == NULL || omp_requires_file[0] == '\0')
    +    fatal_error (input_location, "GCC_OFFLOAD_OMP_REQUIRES_FILE unset");

..., and all offloading compilation fail with that 'fatal_error'.  OK to
push the attached "Fix Intel MIC 'mkoffload' for OpenMP 'requires'"?
(Currently testing.)


Grüße
 Thomas


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