When working on xz, I set `-Werror=suggest-attribute=returns_nonnull`, and the build failed (as I expected it to), but with no visible error from the compiler. There's a mysterious '>/dev/null 2>&1' on the second line where liblzma_la-common.o is built without PIC.
With -fPIC, IPA doesn't end up doing attribute discovery. Without it, it does. This behaviour is IMO undesirable and we should patch it out. This also affects building GCC and is particularly unfortunate if we hit an ICE. See https://bugs.gentoo.org/135865 and https://lists.gnu.org/archive/html/libtool-patches/2024-08/msg00000.html. * ltmain.sh (func_mode_compile): Don't suppress stdout/stderr for no-PIC build. --- I've proposed this upstream and it ended up being bikeshedded a bit. I've been running this locally for nearly a year now and on IRC, others expressed interest in this, as it causes pain when debugging. ltmain.sh | 2 -- 1 file changed, 2 deletions(-) diff --git a/ltmain.sh b/ltmain.sh index 1a710177fb26..79cd7c57f42e 100644 --- a/ltmain.sh +++ b/ltmain.sh @@ -1576,8 +1576,6 @@ compiler." command="$command -o $obj" fi - # Suppress compiler output if we already did a PIC compilation. - command="$command$suppress_output" func_show_eval_locale "$command" \ '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' -- 2.49.0
