Gallium fails to compile on ppc64el.  This prevens the use of the R600 OpenCL driver on the ppc64el platform.

Full log:
https://librarian.quickbuild.pearsoncomputing.net/7108453/buildlog_ubuntu-stretch-ppc64el.mesa_11.0.8-1~icd-ppc64el-enable1_FAILEDTOBUILD.txt.gz

Relevant snippet:
/bin/bash ../../../../libtool  --tag=CXX   --mode=compile g++ -DPACKAGE_NAME=\"Mesa\" -DPACKAGE_TARNAME=\"mesa\" -DPACKAGE_VERSION=\"11.0.8\" -DPACKAGE_STRING=\"Mesa\ 11.0.8\" -DPACKAGE_BUGREPORT=\"https://bugs.freedesktop.org/enter_bug.cgi\?product=Mesa\" -DPACKAGE_URL=\"\" -DPACKAGE=\"mesa\" -DVERSION=\"11.0.8\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DYYTEXT_POINTER=1 -DHAVE___BUILTIN_BSWAP32=1 -DHAVE___BUILTIN_BSWAP64=1 -DHAVE___BUILTIN_CLZ=1 -DHAVE___BUILTIN_CLZLL=1 -DHAVE___BUILTIN_CTZ=1 -DHAVE___BUILTIN_EXPECT=1 -DHAVE___BUILTIN_FFS=1 -DHAVE___BUILTIN_FFSLL=1 -DHAVE___BUILTIN_POPCOUNT=1 -DHAVE___BUILTIN_POPCOUNTLL=1 -DHAVE___BUILTIN_UNREACHABLE=1 -DHAVE_FUNC_ATTRIBUTE_CONST=1 -DHAVE_FUNC_ATTRIBUTE_FLATTEN=1 -DHAVE_FUNC_ATTRIBUTE_FORMAT=1 -DHAVE_FUNC_ATTRIBUTE_MALLOC=1 -DHAVE_FUNC_ATTRIBUTE_PACKED=1 -DHAVE_FUNC_ATTRIBUTE_PURE=1 -DHAVE_FUNC_ATTRIBUTE_UNUSED=1 -DHAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT=1 -DHAVE_DLADDR=1 -DHAVE_CLOCK_GETTIME=1 -DHAVE_PTHREAD=1 -I. -I../../../../../../src/gallium/state_trackers/clover  -DHAVE_PIPE_LOADER_DRI -DHAVE_PIPE_LOADER_DRM -DPIPE_SEARCH_DIR=\"/usr/lib/powerpc64le-linux-gnu/gallium-pipe\" -I../../../../../../include -I../../../../../../src -I../../../../../../src/gallium/include -I../../../../../../src/gallium/drivers -I../../../../../../src/gallium/auxiliary -I../../../../../../src/gallium/winsys -I../../../../../../src/gallium/state_trackers/clover -DHAVE_CLOVER_ICD -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -fvisibility=hidden -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall -Wall -fno-strict-aliasing -fno-builtin-memcmp  -MT api/libclover_la-program.lo -MD -MP -MF api/.deps/libclover_la-program.Tpo -c -o api/libclover_la-program.lo `test -f 'api/program.cpp' || echo '../../../../../../src/gallium/state_trackers/clover/'`api/program.cpp
libtool: compile:  g++ -DPACKAGE_NAME=\"Mesa\" -DPACKAGE_TARNAME=\"mesa\" -DPACKAGE_VERSION=\"11.0.8\" "-DPACKAGE_STRING=\"Mesa 11.0.8\"" "-DPACKAGE_BUGREPORT=\"https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa\"" -DPACKAGE_URL=\"\" -DPACKAGE=\"mesa\" -DVERSION=\"11.0.8\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1 -DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1 -DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1 -DHAVE_DLFCN_H=1 -DLT_OBJDIR=\".libs/\" -DYYTEXT_POINTER=1 -DHAVE___BUILTIN_BSWAP32=1 -DHAVE___BUILTIN_BSWAP64=1 -DHAVE___BUILTIN_CLZ=1 -DHAVE___BUILTIN_CLZLL=1 -DHAVE___BUILTIN_CTZ=1 -DHAVE___BUILTIN_EXPECT=1 -DHAVE___BUILTIN_FFS=1 -DHAVE___BUILTIN_FFSLL=1 -DHAVE___BUILTIN_POPCOUNT=1 -DHAVE___BUILTIN_POPCOUNTLL=1 -DHAVE___BUILTIN_UNREACHABLE=1 -DHAVE_FUNC_ATTRIBUTE_CONST=1 -DHAVE_FUNC_ATTRIBUTE_FLATTEN=1 -DHAVE_FUNC_ATTRIBUTE_FORMAT=1 -DHAVE_FUNC_ATTRIBUTE_MALLOC=1 -DHAVE_FUNC_ATTRIBUTE_PACKED=1 -DHAVE_FUNC_ATTRIBUTE_PURE=1 -DHAVE_FUNC_ATTRIBUTE_UNUSED=1 -DHAVE_FUNC_ATTRIBUTE_WARN_UNUSED_RESULT=1 -DHAVE_DLADDR=1 -DHAVE_CLOCK_GETTIME=1 -DHAVE_PTHREAD=1 -I. -I../../../../../../src/gallium/state_trackers/clover -DHAVE_PIPE_LOADER_DRI -DHAVE_PIPE_LOADER_DRM -DPIPE_SEARCH_DIR=\"/usr/lib/powerpc64le-linux-gnu/gallium-pipe\" -I../../../../../../include -I../../../../../../src -I../../../../../../src/gallium/include -I../../../../../../src/gallium/drivers -I../../../../../../src/gallium/auxiliary -I../../../../../../src/gallium/winsys -I../../../../../../src/gallium/state_trackers/clover -DHAVE_CLOVER_ICD -Wdate-time -D_FORTIFY_SOURCE=2 -std=c++11 -fvisibility=hidden -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wall -Wall -fno-strict-aliasing -fno-builtin-memcmp -MT api/libclover_la-program.lo -MD -MP -MF api/.deps/libclover_la-program.Tpo -c ../../../../../../src/gallium/state_trackers/clover/api/program.cpp  -fPIC -DPIC -o api/.libs/libclover_la-program.o
In file included from /usr/include/c++/5/map:60:0,
                 from ../../../../../../src/gallium/state_trackers/clover/core/property.hpp:26,
                 from ../../../../../../src/gallium/state_trackers/clover/api/util.hpp:30,
                 from ../../../../../../src/gallium/state_trackers/clover/api/context.cpp:23:
/usr/include/c++/5/bits/stl_tree.h: In constructor 'std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_Rb_tree(std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>&&, std::_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::_Node_allocator&&)':
/usr/include/c++/5/bits/stl_tree.h:1332:76: error: '__vector(4) __bool int' is not a valid type for a template non-type parameter
       using __eq = integral_constant<bool, _Alloc_traits::_S_always_equal()>;
                                                                            ^
/usr/include/c++/5/bits/stl_tree.h:1334:25: error: there are no arguments to '__eq' that depend on a template parameter, so a declaration of '__eq' must be available [-fpermissive]
  _M_move_data(__x, __eq());
                         ^
/usr/include/c++/5/bits/stl_tree.h:1334:25: note: (if you use '-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)