https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89096
--- Comment #4 from Andrew Paprocki <andrew at ishiboo dot com> ---
This occurs while building a project that depends on the protobuf library. I'll
attach main.cc.s, and command lines are below. If I take the exact main.cc.o
compilation line and simply swap out GCC 8.2.0 for g++-7, g++-6, g++-5, both
GCC 7.3.0 & GCC 6.4.0 fail in the same manner, but GCC 5.5.0 succeeds.
This is how main.cc.o is compiled:
g++-8 -maix64 -pthread -DGOOGLE_PROTOBUF_CMAKE_BUILD -DHAVE_PTHREAD -DHAVE_ZLIB
-D_LIBCXXABI_FUNC_VIS="" -I/path/to/third_party/protobuf/cmake
-I/path/to/third_party/protobuf/src -D__STDC_FORMAT_MACROS -O2 -g -DNDEBUG
-std=c++11 -o CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o
-c /path/to/third_party/protobuf/src/google/protobuf/compiler/main.cc
... verbose output shows cc1plus invocation:
cc1plus -quiet -v -I /path/to/third_party/protobuf/cmake -I
/path/to/third_party/protobuf/src -imultilib pthread/ppc64 -iprefix
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/ -D_ALL_SOURCE
-D__COMPATMATH__ -D__64BIT__ -D_THREAD_SAFE -D GOOGLE_PROTOBUF_CMAKE_BUILD -D
HAVE_PTHREAD -D HAVE_ZLIB -D _LIBCXXABI_FUNC_VIS= -D __STDC_FORMAT_MACROS -D
NDEBUG /path/to/third_party/protobuf/src/google/protobuf/compiler/main.cc
-quiet -dumpbase main.cc -maix64 -auxbase-strip
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o -g -O2
-std=c++11 -version -o /tmp/ccVqNDE3.s
... verbose output shows as invocation:
as -u -a64 -mppc64 -many -o
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o /tmp/ccVqNDE3.s
This is how the build is attempting to link main.cc.o into a binary:
g++-8 -maix64 -pthread -D__STDC_FORMAT_MACROS -O2 -g -DNDEBUG -Wl,-bnoipath
-Wl,-brtl -Wl,-bbigtoc -Wl,-bexpall
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o -o
protoc-3.6.1 -Wl,-blibpath:/path/to/lib64:/usr/lib:/lib libprotobuf.a
libprotoc.a libprotobuf.a /path/to/lib64/libz.so
Result of running verbose output on the link:
COLLECT_GCC_OPTIONS='-maix64' '-pthread' '-D' '__STDC_FORMAT_MACROS' '-O2' '-g'
'-D' 'NDEBUG' '-o' 'protoc-3.6.1' '-v' '-shared-libgcc'
/path/to/gcc/bin/../libexec/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/collect2
-bpT:0x10000000 -bpD:0x20000000 -btextro -b64 -L/path/to/lib64 -brtl -R
/path/to/lib64 -bsvr4 -o protoc-3.6.1 /lib/crt0_64.o
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64/crtcxa.o
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64/crtdbase.o
-L/path/to/gcc/lib/pthread/ppc64 -R /path/to/gcc/lib/pthread/ppc64
-L/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64
-L/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/../../../pthread/ppc64
-L/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0
-L/path/to/gcc/bin/../lib/gcc
-L/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/../../.. -bnoipath
-brtl -bbigtoc -bexpall
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o
-blibpath:/path/to/lib64:/usr/lib:/lib libprotobuf.a libprotoc.a libprotobuf.a
/path/to/lib64/libz.so -lstdc++ -lm -lgcc_s
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64/libgcc.a
-lpthreads -lc -lgcc_s
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64/libgcc.a
-brtl -R /path/to/lib64
ld: 0711-308 SEVERE ERROR: Object
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o, csect
<_main.ro_>
The csect is part of the .text section.
collect2: error: ld returned 12 exit status
