The issue can be reproduced with:
printf '#include <openacc.h>\nint main() {}' | g++ -fopenacc -x c++ -
which on my machine fails:
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccNlEOT3.target.o: in function `init()':
ccGhZMmI.c:(.text+0x23): undefined reference to `GOMP_offload_register_ver'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccNlEOT3.target.o: in function `fini()':
ccGhZMmI.c:(.text+0x4d): undefined reference to `GOMP_offload_unregister_ver'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/cc88duYr.target.o: in function `init()':
ccg7a03B.c:(.text+0x2f): undefined reference to `GOMP_offload_register_ver'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/cc88duYr.target.o: in function `fini()':
ccg7a03B.c:(.text+0x59): undefined reference to `GOMP_offload_unregister_ver'
collect2: error: ld returned 1 exit status
The errors are duplicate because I have both offload packages
(gcc-offload-nvptx and gcc-offload-amdgcn) installed.
Building with -v produces the full log:
---- 8< ---------------------------------------------------------------
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/16/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 16.2.0-3' --with-bugurl=file:///usr/share/doc/gcc-16/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust,cobol,algol68 --prefix=/usr --with-gcc-major-version-only --program-suffix=-16 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/reproducible-path/gcc-16-16.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/reproducible-path/gcc-16-16.2.0/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-build-config=bootstrap-lto-lean --enable-link-serialization=3
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.2.0 (Debian 16.2.0-3)
COLLECT_GCC_OPTIONS='-fopenacc' '-v' '-foffload-options=-l_GCC_stdc++' '-foffload-options=-l_GCC_m' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-pthread' '-dumpdir' 'a-'
/usr/libexec/gcc/x86_64-linux-gnu/16/cc1plus -quiet -v -imultiarch x86_64-linux-gnu -D_GNU_SOURCE -D_REENTRANT - -quiet -dumpdir a- -dumpbase - -mtune=generic -march=x86-64 -version -fopenacc -foffload-options=-l_GCC_stdc++ -foffload-options=-l_GCC_m -fasynchronous-unwind-tables -o /tmp/ccnzCpbE.s
GNU C++20 (Debian 16.2.0-3) version 16.2.0 (x86_64-linux-gnu)
compiled by GNU C version 16.2.0, GMP version 6.3.0, MPFR version 4.2.2, MPC version 1.3.1, isl version isl-0.28-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/16"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/16/include-fixed/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/16/include-fixed"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/16/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/16
/usr/include/x86_64-linux-gnu/c++/16
/usr/include/c++/16/backward
/usr/lib/gcc/x86_64-linux-gnu/16/include
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
Compiler executable checksum: 6d9c773dc78814fe154a3a23a87e6498
COLLECT_GCC_OPTIONS='-fopenacc' '-v' '-foffload-options=-l_GCC_stdc++' '-foffload-options=-l_GCC_m' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-pthread' '-dumpdir' 'a-'
/usr/bin/x86_64-linux-gnu-as -v --64 -o /tmp/ccgWXsgS.o /tmp/ccnzCpbE.s
GNU assembler version 2.47 (x86_64-linux-gnu) using BFD version (GNU Binutils for Debian) 2.47
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../:/lib/:/usr/lib/
Reading specs from /usr/lib/gcc/x86_64-linux-gnu/16/libgomp.spec
COLLECT_GCC_OPTIONS='-fopenacc' '-v' '-foffload-options=-l_GCC_stdc++' '-foffload-options=-l_GCC_m' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-pthread' '-dumpdir' 'a.'
/usr/libexec/gcc/x86_64-linux-gnu/16/collect2 -plugin /usr/libexec/gcc/x86_64-linux-gnu/16/liblto_plugin.so -plugin-opt=/usr/libexec/gcc/x86_64-linux-gnu/16/lto-wrapper -plugin-opt=-fresolution=/tmp/ccsaMgN3.res -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-latomic_asneeded -plugin-opt=-pass-through=-lpthread -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc --build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed -dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie /usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/Scrt1.o /usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/16/crtbeginS.o /usr/lib/gcc/x86_64-linux-gnu/16/crtoffloadbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/16 -L/usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/16/../../.. -L/lib -L/usr/lib /tmp/ccgWXsgS.o -lstdc++ -lm -lgomp -lgcc_s -lgcc -latomic_asneeded -lpthread -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-linux-gnu/16/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/crtn.o /usr/lib/gcc/x86_64-linux-gnu/16/crtoffloadend.o
/usr/libexec/gcc/x86_64-linux-gnu/16/lto-wrapper -fresolution=/tmp/ccsaMgN3.res -flinker-output=pie -foffload-objects=/tmp/ccnL8zKA.ofldlist
/usr/libexec/gcc/x86_64-linux-gnu/16/lto-wrapper -fresolution=/tmp/ccsaMgN3.res -flinker-output=pie -foffload-objects=/tmp/ccnL8zKA.ofldlist
/usr/libexec/gcc/x86_64-linux-gnu/16//accel/nvptx-none/mkoffload @/tmp/ccKzKWwK
GCC_OFFLOAD_OMP_REQUIRES_FILE=/tmp/ccH5oZZv.mkoffload.omp_requires
x86_64-linux-gnu-accel-nvptx-none-gcc-16 @/tmp/ccjXHH4c
Using built-in specs.
COLLECT_GCC=x86_64-linux-gnu-accel-nvptx-none-gcc-16
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/16/accel/nvptx-none/lto-wrapper
Target: nvptx-none
Configured with: ../src-nvptx/configure --prefix=/usr --libexecdir=/usr/libexec --with-gcc-major-version-only --disable-bootstrap --disable-sjlj-exceptions --enable-newlib-io-long-long --target=nvptx-none --enable-as-accelerator-for=x86_64-linux-gnu --enable-languages=c,c++,fortran,lto --enable-checking=release --with-system-zlib --without-isl --disable-libga68 --program-prefix=nvptx-none- --program-suffix=-16
Thread model: single
Supported LTO compression algorithms: zlib zstd
gcc version 16.2.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-m64' '-mfake-exceptions' '-v' '-fno-openmp' '-fPIE' '-fcf-protection=none' '-foffload-abi=lp64' '-foffload-abi-host-opts=-m64' '-fopenacc' '-fasynchronous-unwind-tables' '-o' '/tmp/ccdMcZI2.mkoffload' '-misa=sm_52'
/usr/libexec/gcc/x86_64-linux-gnu/16/accel/nvptx-none/lto1 -quiet -dumpbase ./a.xnvptx-none.mkoffload -m64 -mfake-exceptions -misa=sm_52 -version -fno-openmp -fPIE -fcf-protection=none -foffload-abi=lp64 -foffload-abi-host-opts=-m64 -fopenacc -fasynchronous-unwind-tables @/tmp/cc5W4PSs -o /tmp/ccZCQ9UW.s
GNU GIMPLE (GCC) version 16.2.0 (nvptx-none)
compiled by GNU C version 16.2.0, GMP version 6.3.0, MPFR version 4.2.2, MPC version 1.3.1, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
COLLECT_GCC_OPTIONS='-v' '-m64' '-mfake-exceptions' '-v' '-fno-openmp' '-fPIE' '-fcf-protection=none' '-foffload-abi=lp64' '-foffload-abi-host-opts=-m64' '-fopenacc' '-fasynchronous-unwind-tables' '-o' '/tmp/ccdMcZI2.mkoffload' '-misa=sm_52'
/usr/libexec/gcc/x86_64-linux-gnu/16/accel/nvptx-none/as -v -v -o /tmp/ccYycKVf.o /tmp/ccZCQ9UW.s
nvJitLink library not usable: need CUDA 13.2 or later version
ptxas -c -o /dev/null /tmp/ccYycKVf.o --gpu-name sm_52 -O0
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/16/accel/nvptx-none/:/usr/libexec/gcc/x86_64-linux-gnu/16/accel/nvptx-none/:/usr/lib/gcc/x86_64-linux-gnu/16/accel/nvptx-none/:/usr/lib/gcc/x86_64-linux-gnu/16/accel/nvptx-none/../../../../../../nvptx-none/bin/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/16/accel/nvptx-none/
Reading specs from /usr/lib/gcc/x86_64-linux-gnu/16/accel/nvptx-none/libgomp.spec
COLLECT_GCC_OPTIONS='-v' '-m64' '-mfake-exceptions' '-v' '-fno-openmp' '-fPIE' '-fcf-protection=none' '-foffload-abi=lp64' '-foffload-abi-host-opts=-m64' '-fopenacc' '-fasynchronous-unwind-tables' '-o' '/tmp/ccdMcZI2.mkoffload' '-misa=sm_52' '-dumpdir' './a.xnvptx-none.mkoffload.'
/usr/libexec/gcc/x86_64-linux-gnu/16/accel/nvptx-none/collect2 -o /tmp/ccdMcZI2.mkoffload -L/usr/lib/gcc/x86_64-linux-gnu/16/accel/nvptx-none @/tmp/ccxKSpx9 -lgomp -lgcc -lc -lgcc
COLLECT_GCC_OPTIONS='-v' '-m64' '-mfake-exceptions' '-v' '-fno-openmp' '-fPIE' '-fcf-protection=none' '-foffload-abi=lp64' '-foffload-abi-host-opts=-m64' '-fopenacc' '-fasynchronous-unwind-tables' '-o' '/tmp/ccdMcZI2.mkoffload' '-misa=sm_52' '-dumpdir' './a.xnvptx-none.mkoffload.'
GCC_EXEC_PREFIX=
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../:/lib/:/usr/lib/
g++ @/tmp/ccQFgmaT
Using built-in specs.
COLLECT_GCC=g++
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 16.2.0-3' --with-bugurl=file:///usr/share/doc/gcc-16/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust,cobol,algol68 --prefix=/usr --with-gcc-major-version-only --program-suffix=-16 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/reproducible-path/gcc-16-16.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/reproducible-path/gcc-16-16.2.0/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-build-config=bootstrap-lto-lean --enable-link-serialization=3
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.2.0 (Debian 16.2.0-3)
COLLECT_GCC_OPTIONS='-v' '-m64' '-c' '-o' '/tmp/ccNlEOT3.target.o' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-linux-gnu/16/cc1plus -quiet -v -imultiarch x86_64-linux-gnu -iprefix x86_64-linux-gnu/16/ -isystem /usr/lib/gcc/x86_64-linux-gnu/16/include -D_GNU_SOURCE /tmp/ccGhZMmI.c -quiet -dumpbase ./a.xnvptx-none.c -dumpbase-ext .c -m64 -mtune=generic -march=x86-64 -version -fasynchronous-unwind-tables -o /tmp/cclNbq4B.s
GNU C++20 (Debian 16.2.0-3) version 16.2.0 (x86_64-linux-gnu)
compiled by GNU C version 16.2.0, GMP version 6.3.0, MPFR version 4.2.2, MPC version 1.3.1, isl version isl-0.28-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../include/c++/16"
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16"
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16/x86_64-linux-gnu"
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../include/c++/16/backward"
ignoring nonexistent directory "x86_64-linux-gnu/16/include"
ignoring nonexistent directory "x86_64-linux-gnu/16/include-fixed/x86_64-linux-gnu/x86_64-linux-gnu"
ignoring nonexistent directory "x86_64-linux-gnu/16/include-fixed"
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../x86_64-linux-gnu/include"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../include/c++/16"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../include/c++/16/backward"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/include"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/include-fixed/x86_64-linux-gnu"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/include-fixed"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-linux-gnu/16/include
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
Compiler executable checksum: 6d9c773dc78814fe154a3a23a87e6498
COLLECT_GCC_OPTIONS='-v' '-m64' '-c' '-o' '/tmp/ccNlEOT3.target.o' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/bin/x86_64-linux-gnu-as -v --64 -o /tmp/ccNlEOT3.target.o /tmp/cclNbq4B.s
GNU assembler version 2.47 (x86_64-linux-gnu) using BFD version (GNU Binutils for Debian) 2.47
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/../lib/:/lib/../lib/x86_64-linux-gnu/:/lib/../lib/../lib/:/usr/lib/../lib/x86_64-linux-gnu/:/usr/lib/../lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../:/lib/:/usr/lib/:../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-m64' '-c' '-o' '/tmp/ccNlEOT3.target.o' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' './a.xnvptx-none.'
/usr/libexec/gcc/x86_64-linux-gnu/16//accel/amdgcn-amdhsa/mkoffload @/tmp/cczqrsiA
GCC_OFFLOAD_OMP_REQUIRES_FILE=/tmp/ccaEVQ5R.mkoffload.omp_requires
x86_64-linux-gnu-accel-amdgcn-amdhsa-gcc-16 @/tmp/ccGlXwih
Using built-in specs.
COLLECT_GCC=x86_64-linux-gnu-accel-amdgcn-amdhsa-gcc-16
Target: amdgcn-amdhsa
Configured with: ../src-gcn/configure --prefix=/usr --libexecdir=/usr/libexec --with-gcc-major-version-only --disable-bootstrap --disable-sjlj-exceptions --enable-newlib-io-long-long --target=amdgcn-amdhsa --enable-as-accelerator-for=x86_64-linux-gnu --enable-languages=c,c++,fortran,lto --enable-checking=release --disable-libstdcxx-pch --disable-libquadmath-support --disable-libga68 --with-system-zlib --without-isl --without-gnu-as --without-gnu-ld --with-build-time-tools=/build/reproducible-path/gcc-16-16.2.0/bin-gcn --program-prefix=amdgcn-amdhsa- --program-suffix=-16
Thread model: gcn
Supported LTO compression algorithms: zlib zstd
gcc version 16.2.0 (GCC)
COLLECT_GCC_OPTIONS='-S' '-v' '-m64' '-mfake-exceptions' '-v' '-fno-openmp' '-fPIE' '-fcf-protection=none' '-foffload-abi=lp64' '-foffload-abi-host-opts=-m64' '-fopenacc' '-fasynchronous-unwind-tables' '-o' '/tmp/cckXKle1.mkoffload.1.s' '-march=gfx90a'
/usr/libexec/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/lto1 -quiet -dumpbase ./a.xamdgcn-amdhsa.mkoffload -m64 -mfake-exceptions -march=gfx90a -version -fno-openmp -fPIE -fcf-protection=none -foffload-abi=lp64 -foffload-abi-host-opts=-m64 -fopenacc -fasynchronous-unwind-tables -o /tmp/cckXKle1.mkoffload.1.s @/tmp/ccrlRbh2
GNU GIMPLE (GCC) version 16.2.0 (amdgcn-amdhsa)
compiled by GNU C version 16.2.0, GMP version 6.3.0, MPFR version 4.2.2, MPC version 1.3.1, isl version none
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/:/usr/libexec/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/:/usr/lib/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/:/usr/lib/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/../../../../../../amdgcn-amdhsa/bin/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/
COLLECT_GCC_OPTIONS='-S' '-v' '-m64' '-mfake-exceptions' '-v' '-fno-openmp' '-fPIE' '-fcf-protection=none' '-foffload-abi=lp64' '-foffload-abi-host-opts=-m64' '-fopenacc' '-fasynchronous-unwind-tables' '-o' '/tmp/cckXKle1.mkoffload.1.s' '-march=gfx90a' '-dumpdir' './a.xamdgcn-amdhsa.mkoffload.'
x86_64-linux-gnu-accel-amdgcn-amdhsa-gcc-16 @/tmp/ccn404WN
Using built-in specs.
COLLECT_GCC=x86_64-linux-gnu-accel-amdgcn-amdhsa-gcc-16
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/lto-wrapper
Target: amdgcn-amdhsa
Configured with: ../src-gcn/configure --prefix=/usr --libexecdir=/usr/libexec --with-gcc-major-version-only --disable-bootstrap --disable-sjlj-exceptions --enable-newlib-io-long-long --target=amdgcn-amdhsa --enable-as-accelerator-for=x86_64-linux-gnu --enable-languages=c,c++,fortran,lto --enable-checking=release --disable-libstdcxx-pch --disable-libquadmath-support --disable-libga68 --with-system-zlib --without-isl --without-gnu-as --without-gnu-ld --with-build-time-tools=/build/reproducible-path/gcc-16-16.2.0/bin-gcn --program-prefix=amdgcn-amdhsa- --program-suffix=-16
Thread model: gcn
Supported LTO compression algorithms: zlib zstd
gcc version 16.2.0 (GCC)
COLLECT_GCC_OPTIONS='-mxnack=any' '-msram-ecc=any' '-v' '-o' '/tmp/ccjX4pz6.mkoffload.hsaco' '-march=gfx90a' '-dumpdir' '/tmp/ccjX4pz6.mkoffload.hsaco-'
/usr/libexec/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/as -triple=amdgcn--amdhsa -mcpu=gfx90a --amdhsa-code-object-version=4 -filetype=obj -o /tmp/ccpd9MKk.o /tmp/cc3gv1Sw.mkoffload.2.s
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/:/usr/libexec/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/:/usr/lib/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/:/usr/lib/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/../../../../../../amdgcn-amdhsa/bin/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/
COLLECT_GCC_OPTIONS='-mxnack=any' '-msram-ecc=any' '-v' '-o' '/tmp/ccjX4pz6.mkoffload.hsaco' '-march=gfx90a' '-dumpdir' '/tmp/ccjX4pz6.mkoffload.hsaco.'
/usr/libexec/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/collect2 --pie --export-dynamic -o /tmp/ccjX4pz6.mkoffload.hsaco /usr/lib/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa/crt0.o -L/usr/lib/gcc/x86_64-linux-gnu/16/accel/amdgcn-amdhsa @/tmp/ccDVteMt -lgcc -lc -lgcc
COLLECT_GCC_OPTIONS='-mxnack=any' '-msram-ecc=any' '-v' '-o' '/tmp/ccjX4pz6.mkoffload.hsaco' '-march=gfx90a' '-dumpdir' '/tmp/ccjX4pz6.mkoffload.hsaco.'
GCC_EXEC_PREFIX=
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../:/lib/:/usr/lib/
g++ @/tmp/ccuo70dP
Using built-in specs.
COLLECT_GCC=g++
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 16.2.0-3' --with-bugurl=file:///usr/share/doc/gcc-16/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2,rust,cobol,algol68 --prefix=/usr --with-gcc-major-version-only --program-suffix=-16 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/libexec --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none=/build/reproducible-path/gcc-16-16.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/reproducible-path/gcc-16-16.2.0/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-build-config=bootstrap-lto-lean --enable-link-serialization=3
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 16.2.0 (Debian 16.2.0-3)
COLLECT_GCC_OPTIONS='-v' '-m64' '-c' '-o' '/tmp/cc88duYr.target.o' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/libexec/gcc/x86_64-linux-gnu/16/cc1plus -quiet -v -imultiarch x86_64-linux-gnu -iprefix x86_64-linux-gnu/16/ -isystem /usr/lib/gcc/x86_64-linux-gnu/16/include -D_GNU_SOURCE /tmp/ccg7a03B.c -quiet -dumpbase ./a.xamdgcn-amdhsa.c -dumpbase-ext .c -m64 -mtune=generic -march=x86-64 -version -fasynchronous-unwind-tables -o /tmp/cc7tpRdm.s
GNU C++20 (Debian 16.2.0-3) version 16.2.0 (x86_64-linux-gnu)
compiled by GNU C version 16.2.0, GMP version 6.3.0, MPFR version 4.2.2, MPC version 1.3.1, isl version isl-0.28-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../include/c++/16"
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16"
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16/x86_64-linux-gnu"
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../include/c++/16/backward"
ignoring nonexistent directory "x86_64-linux-gnu/16/include"
ignoring nonexistent directory "x86_64-linux-gnu/16/include-fixed/x86_64-linux-gnu/x86_64-linux-gnu"
ignoring nonexistent directory "x86_64-linux-gnu/16/include-fixed"
ignoring nonexistent directory "x86_64-linux-gnu/16/../../../../x86_64-linux-gnu/include"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../include/c++/16"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../include/x86_64-linux-gnu/c++/16"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../include/c++/16/backward"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/include"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/include-fixed/x86_64-linux-gnu"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/include-fixed"
ignoring nonexistent directory "../../lib/gcc/x86_64-linux-gnu/16/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-linux-gnu/16/include
/usr/local/include
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
Compiler executable checksum: 6d9c773dc78814fe154a3a23a87e6498
COLLECT_GCC_OPTIONS='-v' '-m64' '-c' '-o' '/tmp/cc88duYr.target.o' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/bin/x86_64-linux-gnu-as -v --64 -o /tmp/cc88duYr.target.o /tmp/cc7tpRdm.s
GNU assembler version 2.47 (x86_64-linux-gnu) using BFD version (GNU Binutils for Debian) 2.47
COMPILER_PATH=/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/16/:/usr/libexec/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/../lib/:/lib/../lib/x86_64-linux-gnu/:/lib/../lib/../lib/:/usr/lib/../lib/x86_64-linux-gnu/:/usr/lib/../lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/16/../../../:/lib/:/usr/lib/:../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-m64' '-c' '-o' '/tmp/cc88duYr.target.o' '-shared-libgcc' '-mtune=generic' '-march=x86-64' '-dumpdir' './a.xamdgcn-amdhsa.'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccNlEOT3.target.o: in function `init()':
ccGhZMmI.c:(.text+0x23): undefined reference to `GOMP_offload_register_ver'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/ccNlEOT3.target.o: in function `fini()':
ccGhZMmI.c:(.text+0x4d): undefined reference to `GOMP_offload_unregister_ver'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/cc88duYr.target.o: in function `init()':
ccg7a03B.c:(.text+0x2f): undefined reference to `GOMP_offload_register_ver'
/usr/bin/x86_64-linux-gnu-ld.bfd: /tmp/cc88duYr.target.o: in function `fini()':
ccg7a03B.c:(.text+0x59): undefined reference to `GOMP_offload_unregister_ver'
collect2: error: ld returned 1 exit status
---- 8< ---------------------------------------------------------------
whereas building in C mode seems to produce no error.
Sorry if this is not the correct package, I was unsure about which package to report to.