Hi Jan.
> Building for for bpf-unknown-none target, recent GCCs will issue an unused > variable warning as the REGNO_REG_CLASS macro doesn't actually use its > argument. Reference the argument as (void) to silence the warning. > > .../gcc/configure --prefix=... --enable-werror-always --enable-languages=all > --disable-gcov --disable-shared --disable-threads --target=bpf-unknown-none > --without-headers > [...] > make V=1 all-gcc > [...] > > /usr/lib/gcc-snapshot/bin/g++ -fno-PIE -c -g -O2 -DIN_GCC > -DCROSS_DIRECTORY_STRUCTURE -fno-exceptions -fno-rtti > -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings > -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic > -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror > -fno-common -DHAVE_CONFIG_H -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. > -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include > -I../../gcc/gcc/../libcody -I../../gcc/gcc/../libdecnumber > -I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber > -I../../gcc/gcc/../libbacktrace -o regcprop.o -MT regcprop.o -MMD -MP -MF > ./.deps/regcprop.TPo ../../gcc/gcc/regcprop.cc > ../../gcc/gcc/regcprop.cc: In function 'bool > copyprop_hardreg_forward_1(basic_block, value_data*)': > ../../gcc/gcc/regcprop.cc:794:24: error: unused variable 'regno' > [-Werror=unused-variable] > 794 | unsigned int regno = REGNO (SET_SRC (set)); > | ^~~~~ > cc1plus: all warnings being treated as errors > make[1]: *** [Makefile:1146: regcprop.o] Error 1 > make[1]: Leaving directory > '/var/lib/laminar/run/gcc-bpf-unknown-none/1/toolchain-build/gcc' > make: *** [Makefile:4565: all-gcc] Error 2 > > > Ok for HEAD? OK. Thanks.
