[Bug bootstrap/100327] New: [12 regression] bootstrap failure after r12-228

[seurer at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100327

            Bug ID: 100327
           Summary: [12 regression] bootstrap failure after r12-228
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: seurer at gcc dot gnu.org
  Target Milestone: ---

g:54f0224d55a1b56dde092460ddf76913670e6efc, r12-228

commit 54f0224d55a1b56dde092460ddf76913670e6efc (HEAD)
Author: Patrick McGehearty <patrick.mcgehearty@oracle.com>
Date:   Wed Apr 28 19:14:48 2021 +0000

    Practical improvement to libgcc complex divide


With this commit I am seeing the follow errors or similar on multiple powerpc64
test machines, possibly all of them.  Is this using things from a later version
of glibc or something that is now required?  If so this is going to be a
problem.

/home/seurer/gcc/git/build/gcc-trunk/./gcc/xgcc
-B/home/seurer/gcc/git/build/gcc-trunk/./gcc/
-B/home/seurer/gcc/git/install/gcc-trunk/powerpc64le-unknown-linux-gnu/bin/
-B/home/seurer/gcc/git/install/gcc-trunk/powerpc64le-unknown-linux-gnu/lib/
-isystem
/home/seurer/gcc/git/install/gcc-trunk/powerpc64le-unknown-linux-gnu/include
-isystem
/home/seurer/gcc/git/install/gcc-trunk/powerpc64le-unknown-linux-gnu/sys-include
   -g -O2 -O2  -g -O2 -DIN_GCC    -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition 
-isystem ./include   -fPIC -mlong-double-128 -mno-minimal-toc -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector   -fPIC -mlong-double-128
-mno-minimal-toc -I. -I. -I../.././gcc -I/home/seurer/gcc/git/gcc-trunk/libgcc
-I/home/seurer/gcc/git/gcc-trunk/libgcc/.
-I/home/seurer/gcc/git/gcc-trunk/libgcc/../gcc
-I/home/seurer/gcc/git/gcc-trunk/libgcc/../include
-I/home/seurer/gcc/git/gcc-trunk/libgcc/../libdecnumber/dpd
-I/home/seurer/gcc/git/gcc-trunk/libgcc/../libdecnumber -DHAVE_CC_TLS 
-Wno-type-limits -mvsx -mfloat128 -mno-float128-hardware -mno-gnu-attribute
-I/home/seurer/gcc/git/gcc-trunk/libgcc/soft-fp
-I/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000 -DFLOAT128_HW_INSNS -o
_divkc3.o -MT _divkc3.o -MD -MP -MF _divkc3.dep  -c
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c
-fvisibility=hidden -DHIDE_EXPORTS
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c: In function
'__divkc3_sw':
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c:41:17: error:
'__LIBGCC_KF_MAX__' undeclared (first use in this function)
   41 | #define RBIG   (__LIBGCC_KF_MAX__ / 2)
      |                 ^~~~~~~~~~~~~~~~~
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c:68:23: note: in
expansion of macro 'RBIG'
   68 |       if (FABS (d) >= RBIG)
      |                       ^~~~
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c:41:17: note: each
undeclared identifier is reported only once for each function it appears in
   41 | #define RBIG   (__LIBGCC_KF_MAX__ / 2)
      |                 ^~~~~~~~~~~~~~~~~
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c:68:23: note: in
expansion of macro 'RBIG'
   68 |       if (FABS (d) >= RBIG)
      |                       ^~~~
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c:43:17: error:
'__LIBGCC_KF_EPSILON__' undeclared (first use in this function)
   43 | #define RMIN2  (__LIBGCC_KF_EPSILON__)
      |                 ^~~~~~~~~~~~~~~~~~~~~
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c:78:22: note: in
expansion of macro 'RMIN2'
   78 |       if (FABS (d) < RMIN2)
      |                      ^~~~~
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c:42:17: error:
'__LIBGCC_KF_MIN__' undeclared (first use in this function)
   42 | #define RMIN   (__LIBGCC_KF_MIN__)
      |                 ^~~~~~~~~~~~~~~~~
/home/seurer/gcc/git/gcc-trunk/libgcc/config/rs6000/_divkc3.c:87:28: note: in
expansion of macro 'RMIN'
   87 |           if (((FABS (a) < RMIN) && (FABS (b) < RMAX2) && (FABS (d) <
RMAX2))
      |                            ^~~~
/home/seurer/gcc/git/gcc-trunk/libgcc/shared-object.mk:14: recipe for target
'_divkc3.o' failed
make[2]: *** [_divkc3.o] Error 1