Performing C SOURCE FILE Test CC_HAS_SHORTEN_64_32 failed with the following output:
Change Dir: /var/tmp/portage/sci-libs/netcdf-4.8.1-r2/work/netcdf-4.8.1_build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/ninja cmTC_6c3fc && [1/2] Building C object CMakeFiles/cmTC_6c3fc.dir/src.c.o
FAILED: CMakeFiles/cmTC_6c3fc.dir/src.c.o 
/usr/bin/powerpc-unknown-linux-gnu-gcc -DCC_HAS_SHORTEN_64_32   -O2 -pipe -g -ggdb -frecord-gcc-switches  -fno-strict-aliasing -fno-strict-aliasing  -fPIE   -Wshorten-64-to-32 -o CMakeFiles/cmTC_6c3fc.dir/src.c.o -c /var/tmp/portage/sci-libs/netcdf-4.8.1-r2/work/netcdf-4.8.1_build/CMakeFiles/CMakeTmp/src.c
powerpc-unknown-linux-gnu-gcc: error: unrecognized command-line option '-Wshorten-64-to-32'
ninja: build stopped: subcommand failed.


Source file was:
int main(void) { return 0; }