https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111956
--- Comment #10 from Thomas Schwinge <tschwinge at gcc dot gnu.org> --- In addition to what Maciej said (..., and similarly, I don't have any proper knowledge about PowerPC details): (In reply to Gaius Mulley from comment #6) > Created attachment 56522 [details] > Proposed fix v5 Thanks for looking into this! > Here is the latest patch which [...] 96 > failures on gcc135. [...] With no special 'configure' flags, I'm seeing (presumably) those, too. I noticed in 'build-gcc/gcc/m2/config-make' (generated from 'gcc/m2/config-make.in'): # Does the target have -mabi=ieeelongdouble support in libm? (yes/no). HAVE_TARGET_LONG_DOUBLE_IEEE = @have_target_long_double_ieee@ ..., so missing 'AC_SUBST' or similar -- but is that actually unused? I further noticed the following delta when regenerating 'libgm2/configure': case "$target" in powerpc*-*-linux*) - LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute" # Check for IEEE128 support in libm: (In reply to Gaius Mulley from comment #8) > Here is the same patch as v5 but generated using git diff -w. Please don't include unrelated changes (here: whitespace cleanup); handle that separately (if you must). ;-)