https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108102
--- Comment #4 from Stefan Schulze Frielinghaus <stefansf at linux dot ibm.com> --- I was playing around with this and was wondering how can I actually execute the stageN compiler? From the output of make I see two compilations for object rust-hir-trait-resolve.o. Thus the first one must be for stage2 and the second one for stage3. For the former the command line is /devel/gcc/build/./prev-gcc/xg++ -B/devel/gcc/build/./prev-gcc/ -B/devel/gcc/dst/s390x-ibm-linux-gnu/bin/ -nostdinc++ -B/devel/gcc/build/prev-s390x-ibm-linux-gnu/libstdc++-v3/src/.libs -B/devel/gcc/build/prev-s390x-ibm-linux-gnu/libstdc++-v3/libsupc++/.libs -I/devel/gcc/build/prev-s390x-ibm-linux-gnu/libstdc++-v3/include/s390x-ibm-linux-gnu -I/devel/gcc/build/prev-s390x-ibm-linux-gnu/libstdc++-v3/include -I/devel/gcc/src/libstdc++-v3/libsupc++ -L/devel/gcc/build/prev-s390x-ibm-linux-gnu/libstdc++-v3/src/.libs -L/devel/gcc/build/prev-s390x-ibm-linux-gnu/libstdc++-v3/libsupc++/.libs -fno-PIE -c -DIN_GCC_FRONTEND -g -O2 -fno-checking -gtoggle -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -Wno-unused-parameter -fno-common -DHAVE_CONFIG_H -I. -Irust -I/devel/gcc/src/gcc -I/devel/gcc/src/gcc/rust -I/devel/gcc/src/gcc/../include -I/devel/gcc/src/gcc/../libcpp/include -I/devel/gcc/src/gcc/../libcody -I/devel/gcc/src/gcc/../libdecnumber -I/devel/gcc/src/gcc/../libdecnumber/dpd -I../libdecnumber -I/devel/gcc/src/gcc/../libbacktrace -o rust/rust-hir-trait-resolve.o -MT rust/rust-hir-trait-resolve.o -MMD -MP -MF rust/.deps/rust-hir-trait-resolve.TPo -g -O2 -fno-checking -gtoggle -I /devel/gcc/src/gcc/rust -I /devel/gcc/src/gcc/rust/lex -I /devel/gcc/src/gcc/rust/parse -I /devel/gcc/src/gcc/rust/ast -I /devel/gcc/src/gcc/rust/analysis -I /devel/gcc/src/gcc/rust/backend -I /devel/gcc/src/gcc/rust/expand -I /devel/gcc/src/gcc/rust/hir/tree -I /devel/gcc/src/gcc/rust/hir -I /devel/gcc/src/gcc/rust/resolve -I /devel/gcc/src/gcc/rust/util -I /devel/gcc/src/gcc/rust/typecheck -I /devel/gcc/src/gcc/rust/checks/lints -I /devel/gcc/src/gcc/rust/checks/errors -I /devel/gcc/src/gcc/rust/checks/errors/privacy -I /devel/gcc/src/gcc/rust/util -I /devel/gcc/src/gcc/rust/metadata /devel/gcc/src/gcc/rust/typecheck/rust-hir-trait-resolve.cc and the current working directory was most likely /devel/gcc/build/gcc. Creating a symlink from $build/stage1-gcc to $build/prev-gcc and then running the command from above doesn't do the trick. There is probably an easier way which I miss. Any hints?
