https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104285
Bug ID: 104285
Summary: openmp offload linker issue
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: xw111luoye at gmail dot com
Target Milestone: ---
miniQMC https://github.com/ye-luo/miniqmc
ships a set of OpenMP offload tests.
```
cmake -DCMAKE_CXX_COMPILER=g++ -DENABLE_OFFLOAD=ON ..
make -j32
```
When those tests are compiled into individual executables.
All tests compile/link/run fine.
However if all the tests are linked together into a single executable
test_omptarget_all_in_one
I got
```
lto1: fatal error:
CMakeFiles/test_omptarget_all_in_one.dir/test_omp_reduction.cpp.o: section
_ZN11qmcplusplusL29____C_A_T_C_H____T_E_S_T____0Ev$_omp_fn$1.3169 is missing
compilation terminated.
mkoffload: fatal error:
/soft/gcc/gcc-12-dev-2022-01-28/bin/x86_64-pc-linux-gnu-accel-nvptx-none-gcc
returned 1 exit status
compilation terminated.
lto-wrapper: fatal error:
/soft/gcc/gcc-12-dev-2022-01-28/libexec/gcc/x86_64-pc-linux-gnu/12.0.1//accel/nvptx-none/mkoffload
returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[2]: ***
[src/Platforms/tests/OMPTarget/CMakeFiles/test_omptarget_all_in_one.dir/build.make:359:
src/Platforms/tests/OMPTarget/test_omptarget_all_in_one] Error 1
make[1]: *** [CMakeFiles/Makefile2:1656:
src/Platforms/tests/OMPTarget/CMakeFiles/test_omptarget_all_in_one.dir/all]
Error 2
make: *** [Makefile:101: all] Error 2
```
gcc compiler commit 3f0fcda37f58d4108feb67de08f181a32bcb6388
