Comment 3 for bug 1907812

It's getting worse on Ubuntu 21.04

$ gfortran -fopenmp matmul.f90 -o test.x
lto-wrapper: fatal error: could not find accel/amdgcn-amdhsa/mkoffload in /usr/lib/gcc/x86_64-linux-gnu/10/:/usr/lib/gcc/x86_64-linux-gnu/10/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/10/:/usr/lib/gcc/x86_64-linux-gnu/ (consider using ‘-B’)
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status

I reported that before but someone has closed it.

$ gfortran -fopenmp -foffload=nvptx-none matmul.f90 -o test.x
/usr/bin/ld: /tmp/ccvGeRgU.crtoffloadtable.o: warning: relocation against `__offload_vars_end' in read-only section `.rodata'
/usr/bin/ld: warning: creating DT_TEXTREL in a PIE

$ gfortran -fopenmp -foffload=nvptx-none -no-pie matmul.f90 -o test.x
$ ./test.x 1024
 dim1 = dim2 = 1024
 MATMUL Time = 6.80000037E-02

libgomp: while loading libgomp-plugin-gcn.so.1: libgomp-plugin-gcn.so.1: cannot open shared object file: No such file or directory
 Offloading Time = 11.8520002
 Max(|C2-C1|) = 5.79833984E-04
$ ./test.x 1024
 dim1 = dim2 = 1024
 MATMUL Time = 6.30000010E-02

libgomp: while loading libgomp-plugin-gcn.so.1: libgomp-plugin-gcn.so.1: cannot open shared object file: No such file or directory

libgomp: cuCtxSynchronize error: the launch timed out and was terminated

libgomp: cuMemFree_v2 error: the launch timed out and was terminated

libgomp: device finalization failed