qtwebengine 5.11 fails to compile with Mesa Master

[16736/16777] /usr/bin/g++ -MMD -MF obj/QtWebEngineCore/chromium_gpu_helper.o.d -DCHROMIUM_VERSION=\"65.0.3325.151\" -DQT_NO_KEYWORDS -DQT_USE_QSTRINGBUILDER -DQ_FORWARD_DECLARE_OBJC_CLASS=QT_FORWARD_DECLARE_CLASS -DQTWEBENGINECORE_VERSION_STR=\"5.11.0\" -DQTWEBENGINEPROCESS_NAME=\"QtWebEngineProcess\" -DBUILDING_CHROMIUM -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_WEBCHANNEL_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_WEBENGINECOREHEADERS_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DV8_DEPRECATION_WARNINGS -DUSE_UDEV -DUSE_AURA=1 -DUSE_GLIB=1 -DUSE_NSS_CERTS=1 -DUSE_X11=1 -DNO_TCMALLOC -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DCHROMIUM_BUILD -DFIELDTRIAL_TESTING_ENABLED -DTOOLKIT_QT -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32 -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_26 -DGL_GLEXT_PROTOTYPES -DUSE_GLX -DUSE_EGL -DU_USING_ICU_NAMESPACE=0 -DU_ENABLE_DYLOAD=0 -DU_STATIC_IMPLEMENTATION -DICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_FILE -DUCHAR_TYPE=uint16_t -DGOOGLE_PROTOBUF_NO_RTTI -DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DHAVE_PTHREAD -DLEVELDB_PLATFORM_CHROMIUM=1 -DSK_IGNORE_LINEONLY_AA_CONVEX_PATH_OPTS -DSK_HAS_PNG_LIBRARY -DSK_HAS_WEBP_LIBRARY -DSK_HAS_JPEG_LIBRARY -DSK_SUPPORT_GPU=1 -DWEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS=0 -DFEATURE_ENABLE_VOICEMAIL -DGTEST_RELATIVE_PATH -DWEBRTC_CHROMIUM_BUILD -DWEBRTC_POSIX -DWEBRTC_LINUX -I../../3rdparty/chromium/skia/config -I../../3rdparty/chromium/third_party -I../../3rdparty/chromium/third_party/skia/include/core -I/srcbuild/qtwebengine/src/core -I/srcbuild/qtwebengine/src/core/api -I/opt/include -I/opt/include/libdrm -I/opt/include -I/usr/include -I/opt/include/QtQuick -I/opt/include/QtGui -I/opt/include/QtWebChannel -I/opt/include/QtQml -I/opt/include/QtNetwork -I/opt/include/QtCore -I/srcbuild/qtwebengine/include -I/srcbuild/qtwebengine/include/QtWebEngineCore -I/srcbuild/qtwebengine/include/QtWebEngineCore/5.11.0 -I/srcbuild/qtwebengine/include/QtWebEngineCore/5.11.0/QtWebEngineCore -I/opt/include/QtQuick/5.11.0 -I/opt/include/QtQuick/5.11.0/QtQuick -I/opt/include/QtGui/5.11.0 -I/opt/include/QtGui/5.11.0/QtGui -I/opt/include/QtQml/5.11.0 -I/opt/include/QtQml/5.11.0/QtQml -I/opt/include/QtCore/5.11.0 -I/opt/include/QtCore/5.11.0/QtCore -I.moc -I/opt/include -I/opt/include/libdrm -I/opt/include -I/usr/include -I/opt/include -I/opt/include -Igen/.moc -I/opt/mkspecs/linux-g++ -Igen -I../../3rdparty/chromium -I/opt/include/glib-2.0 -I/opt/lib/i386-linux-gnu/glib-2.0/include -I/usr/include -Igen -I../../3rdparty/chromium/third_party/khronos -I../../3rdparty/chromium/gpu -I../../3rdparty/chromium/third_party/libyuv/include -Igen -I../../3rdparty/chromium/third_party/ced/src -I../../3rdparty/chromium/third_party/icu/source/common -I../../3rdparty/chromium/third_party/icu/source/i18n -I../../3rdparty/chromium/third_party/protobuf/src -I../../3rdparty/chromium/third_party/protobuf/src -Igen/protoc_out -I../../3rdparty/chromium/third_party/boringssl/src/include -I/usr/include/nss -I/usr/include/nspr -Igen -I../../3rdparty/chromium/third_party/leveldatabase -I../../3rdparty/chromium/third_party/leveldatabase/src -I../../3rdparty/chromium/third_party/leveldatabase/src/include -I../../3rdparty/chromium/skia/config -I../../3rdparty/chromium/skia/ext -I../../3rdparty/chromium/third_party/skia/include/c -I../../3rdparty/chromium/third_party/skia/include/config -I../../3rdparty/chromium/third_party/skia/include/core -I../../3rdparty/chromium/third_party/skia/include/effects -I../../3rdparty/chromium/third_party/skia/include/encode -I../../3rdparty/chromium/third_party/skia/include/gpu -I../../3rdparty/chromium/third_party/skia/include/images -I../../3rdparty/chromium/third_party/skia/include/lazy -I../../3rdparty/chromium/third_party/skia/include/pathops -I../../3rdparty/chromium/third_party/skia/include/pdf -I../../3rdparty/chromium/third_party/skia/include/pipe -I../../3rdparty/chromium/third_party/skia/include/ports -I../../3rdparty/chromium/third_party/skia/include/utils -I../../3rdparty/chromium/third_party/vulkan/include -I../../3rdparty/chromium/third_party/skia/src/gpu -I../../3rdparty/chromium/third_party/skia/src/sksl -I../../3rdparty/chromium/third_party/libwebm/source -I../../3rdparty/chromium/third_party/WebKit -Igen/third_party/WebKit -I../../3rdparty/chromium/v8/include -Igen/v8/include -I../../3rdparty/chromium/third_party/mesa/src/include -I../../3rdparty/chromium/third_party/webrtc_overrides -I../../3rdparty/chromium/testing/gtest/include -I../../3rdparty/chromium/third_party/webrtc -I../../3rdparty/chromium/third_party/webrtc_overrides -I../../3rdparty/chromium/third_party/webrtc -pipe -O2 -fno-exceptions -Wall -W -D_REENTRANT -fno-strict-aliasing --param=ssp-buffer-size=4 -fstack-protector -Wno-builtin-macro-redefined -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -funwind-tables -fPIC -pipe -pthread -m32 -msse2 -mfpmath=sse -mmmx -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wno-unused-local-typedefs -Wno-maybe-uninitialized -Wno-deprecated-declarations -fno-delete-null-pointer-checks -Wno-missing-field-initializers -Wno-unused-parameter -O2 -fno-ident -fdata-sections -ffunction-sections -fno-omit-frame-pointer -g0 -fvisibility=hidden -pipe -O2 -fno-exceptions -Wall -W -D_REENTRANT -Wno-unused-parameter -Wno-unused-variable -std=gnu++14 -fno-delete-null-pointer-checks -Wno-narrowing -fno-exceptions -fno-rtti -fvisibility-inlines-hidden -c /srcbuild/qtwebengine/src/core/chromium_gpu_helper.cpp -o obj/QtWebEngineCore/chromium_gpu_helper.o
FAILED: obj/QtWebEngineCore/chromium_gpu_helper.o 
/usr/bin/g++ -MMD -MF obj/QtWebEngineCore/chromium_gpu_helper.o.d -DCHROMIUM_VERSION=\"65.0.3325.151\" -DQT_NO_KEYWORDS -DQT_USE_QSTRINGBUILDER -DQ_FORWARD_DECLARE_OBJC_CLASS=QT_FORWARD_DECLARE_CLASS -DQTWEBENGINECORE_VERSION_STR=\"5.11.0\" -DQTWEBENGINEPROCESS_NAME=\"QtWebEngineProcess\" -DBUILDING_CHROMIUM -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_WEBCHANNEL_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_WEBENGINECOREHEADERS_LIB -DQT_QUICK_LIB -DQT_GUI_LIB -DQT_QML_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DV8_DEPRECATION_WARNINGS -DUSE_UDEV -DUSE_AURA=1 -DUSE_GLIB=1 -DUSE_NSS_CERTS=1 -DUSE_X11=1 -DNO_TCMALLOC -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DCHROMIUM_BUILD -DFIELDTRIAL_TESTING_ENABLED -DTOOLKIT_QT -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32 -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_26 -DGL_GLEXT_PROTOTYPES -DUSE_GLX -DUSE_EGL -DU_USING_ICU_NAMESPACE=0 -DU_ENABLE_DYLOAD=0 -DU_STATIC_IMPLEMENTATION -DICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_FILE -DUCHAR_TYPE=uint16_t -DGOOGLE_PROTOBUF_NO_RTTI -DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DHAVE_PTHREAD -DLEVELDB_PLATFORM_CHROMIUM=1 -DSK_IGNORE_LINEONLY_AA_CONVEX_PATH_OPTS -DSK_HAS_PNG_LIBRARY -DSK_HAS_WEBP_LIBRARY -DSK_HAS_JPEG_LIBRARY -DSK_SUPPORT_GPU=1 -DWEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS=0 -DFEATURE_ENABLE_VOICEMAIL -DGTEST_RELATIVE_PATH -DWEBRTC_CHROMIUM_BUILD -DWEBRTC_POSIX -DWEBRTC_LINUX -I../../3rdparty/chromium/skia/config -I../../3rdparty/chromium/third_party -I../../3rdparty/chromium/third_party/skia/include/core -I/srcbuild/qtwebengine/src/core -I/srcbuild/qtwebengine/src/core/api -I/opt/include -I/opt/include/libdrm -I/opt/include -I/usr/include -I/opt/include/QtQuick -I/opt/include/QtGui -I/opt/include/QtWebChannel -I/opt/include/QtQml -I/opt/include/QtNetwork -I/opt/include/QtCore -I/srcbuild/qtwebengine/include -I/srcbuild/qtwebengine/include/QtWebEngineCore -I/srcbuild/qtwebengine/include/QtWebEngineCore/5.11.0 -I/srcbuild/qtwebengine/include/QtWebEngineCore/5.11.0/QtWebEngineCore -I/opt/include/QtQuick/5.11.0 -I/opt/include/QtQuick/5.11.0/QtQuick -I/opt/include/QtGui/5.11.0 -I/opt/include/QtGui/5.11.0/QtGui -I/opt/include/QtQml/5.11.0 -I/opt/include/QtQml/5.11.0/QtQml -I/opt/include/QtCore/5.11.0 -I/opt/include/QtCore/5.11.0/QtCore -I.moc -I/opt/include -I/opt/include/libdrm -I/opt/include -I/usr/include -I/opt/include -I/opt/include -Igen/.moc -I/opt/mkspecs/linux-g++ -Igen -I../../3rdparty/chromium -I/opt/include/glib-2.0 -I/opt/lib/i386-linux-gnu/glib-2.0/include -I/usr/include -Igen -I../../3rdparty/chromium/third_party/khronos -I../../3rdparty/chromium/gpu -I../../3rdparty/chromium/third_party/libyuv/include -Igen -I../../3rdparty/chromium/third_party/ced/src -I../../3rdparty/chromium/third_party/icu/source/common -I../../3rdparty/chromium/third_party/icu/source/i18n -I../../3rdparty/chromium/third_party/protobuf/src -I../../3rdparty/chromium/third_party/protobuf/src -Igen/protoc_out -I../../3rdparty/chromium/third_party/boringssl/src/include -I/usr/include/nss -I/usr/include/nspr -Igen -I../../3rdparty/chromium/third_party/leveldatabase -I../../3rdparty/chromium/third_party/leveldatabase/src -I../../3rdparty/chromium/third_party/leveldatabase/src/include -I../../3rdparty/chromium/skia/config -I../../3rdparty/chromium/skia/ext -I../../3rdparty/chromium/third_party/skia/include/c -I../../3rdparty/chromium/third_party/skia/include/config -I../../3rdparty/chromium/third_party/skia/include/core -I../../3rdparty/chromium/third_party/skia/include/effects -I../../3rdparty/chromium/third_party/skia/include/encode -I../../3rdparty/chromium/third_party/skia/include/gpu -I../../3rdparty/chromium/third_party/skia/include/images -I../../3rdparty/chromium/third_party/skia/include/lazy -I../../3rdparty/chromium/third_party/skia/include/pathops -I../../3rdparty/chromium/third_party/skia/include/pdf -I../../3rdparty/chromium/third_party/skia/include/pipe -I../../3rdparty/chromium/third_party/skia/include/ports -I../../3rdparty/chromium/third_party/skia/include/utils -I../../3rdparty/chromium/third_party/vulkan/include -I../../3rdparty/chromium/third_party/skia/src/gpu -I../../3rdparty/chromium/third_party/skia/src/sksl -I../../3rdparty/chromium/third_party/libwebm/source -I../../3rdparty/chromium/third_party/WebKit -Igen/third_party/WebKit -I../../3rdparty/chromium/v8/include -Igen/v8/include -I../../3rdparty/chromium/third_party/mesa/src/include -I../../3rdparty/chromium/third_party/webrtc_overrides -I../../3rdparty/chromium/testing/gtest/include -I../../3rdparty/chromium/third_party/webrtc -I../../3rdparty/chromium/third_party/webrtc_overrides -I../../3rdparty/chromium/third_party/webrtc -pipe -O2 -fno-exceptions -Wall -W -D_REENTRANT -fno-strict-aliasing --param=ssp-buffer-size=4 -fstack-protector -Wno-builtin-macro-redefined -D__DATE__= -D__TIME__= -D__TIMESTAMP__= -funwind-tables -fPIC -pipe -pthread -m32 -msse2 -mfpmath=sse -mmmx -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wno-unused-local-typedefs -Wno-maybe-uninitialized -Wno-deprecated-declarations -fno-delete-null-pointer-checks -Wno-missing-field-initializers -Wno-unused-parameter -O2 -fno-ident -fdata-sections -ffunction-sections -fno-omit-frame-pointer -g0 -fvisibility=hidden -pipe -O2 -fno-exceptions -Wall -W -D_REENTRANT -Wno-unused-parameter -Wno-unused-variable -std=gnu++14 -fno-delete-null-pointer-checks -Wno-narrowing -fno-exceptions -fno-rtti -fvisibility-inlines-hidden -c /srcbuild/qtwebengine/src/core/chromium_gpu_helper.cpp -o obj/QtWebEngineCore/chromium_gpu_helper.o
In file included from ../../3rdparty/chromium/gpu/command_buffer/common/gles2_cmd_format.h:20:0,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/gles2_cmd_validation.h:12,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/feature_info.h:15,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/texture_manager.h:22,
                 from /srcbuild/qtwebengine/src/core/chromium_gpu_helper.cpp:51:
../../3rdparty/chromium/gpu/command_buffer/common/gl2_types.h:26:26: error: conflicting declaration ‘typedef khronos_intptr_t GLintptr’
 typedef khronos_intptr_t GLintptr;
                          ^~~~~~~~
In file included from /opt/include/GL/gl.h:2055:0,
                 from ../../3rdparty/chromium/ui/gl/gl_bindings.h:31,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/gl_utils.h:17,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/texture_manager.h:21,
                 from /srcbuild/qtwebengine/src/core/chromium_gpu_helper.cpp:51:
/opt/include/GL/glext.h:469:19: note: previous declaration as ‘typedef ptrdiff_t GLintptr’
 typedef ptrdiff_t GLintptr;
                   ^~~~~~~~
In file included from ../../3rdparty/chromium/gpu/command_buffer/common/gles2_cmd_format.h:20:0,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/gles2_cmd_validation.h:12,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/feature_info.h:15,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/texture_manager.h:22,
                 from /srcbuild/qtwebengine/src/core/chromium_gpu_helper.cpp:51:
../../3rdparty/chromium/gpu/command_buffer/common/gl2_types.h:27:25: error: conflicting declaration ‘typedef khronos_ssize_t GLsizeiptr’
 typedef khronos_ssize_t GLsizeiptr;
                         ^~~~~~~~~~
In file included from /opt/include/GL/gl.h:2055:0,
                 from ../../3rdparty/chromium/ui/gl/gl_bindings.h:31,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/gl_utils.h:17,
                 from ../../3rdparty/chromium/gpu/command_buffer/service/texture_manager.h:21,
                 from /srcbuild/qtwebengine/src/core/chromium_gpu_helper.cpp:51:
/opt/include/GL/glext.h:468:19: note: previous declaration as ‘typedef ptrdiff_t GLsizeiptr’
 typedef ptrdiff_t GLsizeiptr;