http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54100
--- Comment #1 from The Written Word <bugzilla-gcc at thewrittenword dot com> 2012-07-27 04:24:59 UTC --- Tried building 4.7.1 on AIX 6.1 and 7.1 and get a similar error. $ cd /opt/build/china $ bzip2 -dc gcc-4.7.1.tar.bz2 | tar xf - $ mkdir gcc-4.7.1-o $ cd gcc-4.7.1-o $ CONFIG_SHELL=/opt/fsw/bash42/bin/bash /opt/build/china/gcc-4.7.1/configure --enable-nls --with-included-gettext --enable-libgcj --enable-shared --enable-threads --with-local-prefix=/opt/TWWfsw/gcc47 --with-gmp=/opt/TWWfsw/libgmp43 --with-mpfr=/opt/TWWfsw/libmpfr30 --with-mpc=/opt/TWWfsw/libmpc09 --enable-languages=c,c++,fortran,java --with-ecj-jar=/opt/TWWfsw/gcc47/lib/gcj/ecj.jar --with-gxx-include-dir=/opt/TWWfsw/gcc47/include/c++ --prefix=/opt/TWWfsw/gcc47 $ LDR_CNTRL=MAXDATA=0x70000000 CONFIG_SHELL=/opt/fsw/bash42/bin/bash LIBPATH=/opt/TWWfsw/libgmp43:/opt/TWWfsw/libmpfr30:/opt/TWWfsw/libmpc09 gmake ... /opt/fsw/bash42/bin/bash ./libtool --tag=GCJ --mode=compile /opt/build/china/gcc-4.7.1-o/./gcc/gcj -B/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/ppc64/libjava/ -B/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/ppc64/libjava/ -B/opt/build/china/gcc-4.7.1-o/./gcc/ -B/opt/TWWfsw/gcc47/powerpc-ibm-aix6.1.0.0/bin/ -B/opt/TWWfsw/gcc47/powerpc-ibm-aix6.1.0.0/lib/ -isystem /opt/TWWfsw/gcc47/powerpc-ibm-aix6.1.0.0/include -isystem /opt/TWWfsw/gcc47/powerpc-ibm-aix6.1.0.0/sys-include -maix64 -fclasspath= -fbootclasspath=/opt/build/china/gcc-4.7.1/libjava/classpath/lib --encoding=UTF-8 -Wno-deprecated -fbootstrap-classes -g -O2 -maix64 -c -o gnu/java/awt/color.lo -fsource-filename=/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/ppc64/libjava/classpath/lib/classes -MT gnu/java/awt/color.lo -MD -MP -MF gnu/java/awt/color.deps @gnu/java/awt/color.list libtool: compile: /opt/build/china/gcc-4.7.1-o/./gcc/gcj -B/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/ppc64/libjava/ -B/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/ppc64/libjava/ -B/opt/build/china/gcc-4.7.1-o/./gcc/ -B/opt/TWWfsw/gcc47/powerpc-ibm-aix6.1.0.0/bin/ -B/opt/TWWfsw/gcc47/powerpc-ibm-aix6.1.0.0/lib/ -isystem /opt/TWWfsw/gcc47/powerpc-ibm-aix6.1.0.0/include -isystem /opt/TWWfsw/gcc47/powerpc-ibm-aix6.1.0.0/sys-include -maix64 -fclasspath= -fbootclasspath=/opt/build/china/gcc-4.7.1/libjava/classpath/lib --encoding=UTF-8 -Wno-deprecated -fbootstrap-classes -g -O2 -maix64 -c -fsource-filename=/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/ppc64/libjava/classpath/lib/classes -MT gnu/java/awt/color.lo -MD -MP -MF gnu/java/awt/color.deps @gnu/java/awt/color.list -o gnu/java/awt/.libs/color.o Assembler: /tmp//ccAWagdt.s: line 2049: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2051: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2053: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2057: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2059: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2061: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2069: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2071: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2075: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2081: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2083: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. /tmp//ccAWagdt.s: line 2085: 1252-149 Instruction fsel is not implemented in the current assembly mode PPC64. gmake[5]: *** [gnu/java/awt/color.lo] Error 1 gmake[5]: Leaving directory `/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/ppc64/libjava' gmake[4]: *** [all-recursive] Error 1 gmake[4]: Leaving directory `/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/ppc64/libjava' gmake[3]: *** [multi-do] Error 1 gmake[3]: Leaving directory `/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/libjava' gmake[2]: *** [all-multi] Error 2 gmake[2]: Leaving directory `/opt/build/china/gcc-4.7.1-o/powerpc-ibm-aix6.1.0.0/libjava' gmake[1]: *** [all-target-libjava] Error 2 gmake[1]: Leaving directory `/opt/build/china/gcc-4.7.1-o' gmake: *** [all] Error 2