Build qt5.15, ninja fails randomly

yanni

I am building qt-everywhere-src-5.15.5, after installing all the dependencies (mostly the libs for QtWebengine), I ran

./configure

and then make. The output is like this

[156/10725] /usr/bin/g++ -MMD -  .............. -o obj/third_party/webrtc/audio/audio/audio_receive_stream.o
[158/10725] /usr/bin/g++ -MMD -MF ........ -o obj/third_party/webrtc/audio/audio/audio_send_stream.o
ninja: build stopped: subcommand failed.
make[4]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src/core'
make[3]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src/core'
make[2]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src'
make[1]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine'

The second time I ran make, it says

[167/10568] /usr/bin/g++ -MMD -MF ........... -o obj/third_party/webrtc/call/call/call.o
ninja: build stopped: subcommand failed.
make[4]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src/core'
make[3]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src/core'
make[2]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src'
make[1]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine'

Sometiems it says

ninja: build stopped: subcommand failed.
make[4]: *** [run_ninja] Error 1

Every time I ran make, it would stop at different positions. Sometimes [98/10528], sometimes [103/10687]. Besides, the number of tasks seems to be varying, sometimes 10568, sometimes 10725.

Here are my questions:

I am pretty sure I did not re-run ./configure, why would the number of tasks change?
How do I know why ninja fails? Is there any log? I tried make V=1, it does not give me any additional information.
It seems that every time it stops when building QtWebengine. Is this related to the libs I manually installed?

I am running the above on Centos7 with 256GB RAM, although there are other users, the free memory is considered to be larger than 100GB.

For brevity, I omitted some of the make output, here is more detailed one:

[166/10568] /usr/bin/python2 ../../3rdparty/chromium/third_party/devtools-frontend/src/scripts/build/generate_devtools_grd.py --file_list __third_party_devtools-frontend_src_generate_devtools_grd__home_me_my_soft_qt-everywhere-src-5.15.5_qtwebengine_src_toolchain_target__rule.rsp --relative_path_dirs resources/inspector ../../3rdparty/chromium/third_party/devtools-frontend/src/front_end --images ../../3rdparty/chromium/third_party/devtools-frontend/src/front_end/Images --output gen/devtools/devtools_resources.grd
[167/10568] /cm/shared/apps/gcc8/8.2.0/bin/g++ -MMD -MF obj/third_party/webrtc/call/call/call.o.d -DUSE_UDEV -DUSE_AURA=1 -DUSE_NSS_CERTS=1 -DUSE_OZONE=1 -DOFFICIAL_BUILD -DTOOLKIT_QT -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -DNO_UNWIND_TABLES -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DWEBRTC_ENABLE_PROTOBUF=1 -DRTC_ENABLE_VP9 -DHAVE_SCTP -DENABLE_EXTERNAL_AUTH -DHAVE_WEBRTC_VIDEO -DLOGGING_INSIDE_WEBRTC -DWEBRTC_LIBRARY_IMPL -DWEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS=0 -DWEBRTC_CHROMIUM_BUILD -DWEBRTC_POSIX -DWEBRTC_LINUX -DABSL_ALLOCATOR_NOTHROW=1 -Igen -I../../3rdparty/chromium -I../../3rdparty/chromium/third_party/webrtc_overrides -I../../3rdparty/chromium/third_party/webrtc -Igen/third_party/webrtc -I../../3rdparty/chromium/third_party/abseil-cpp -I../../3rdparty/chromium/third_party/perfetto/include -Igen/third_party/perfetto/build_config -Igen/third_party/perfetto -I../../3rdparty/chromium/third_party/libyuv/include -fno-strict-aliasing --param=ssp-buffer-size=4 -fstack-protector -fno-unwind-tables -fno-asynchronous-unwind-tables -fPIC -pipe -pthread -m64 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wno-unused-local-typedefs -Wno-maybe-uninitialized -Wno-deprecated-declarations -fno-delete-null-pointer-checks -Wno-comments -Wno-packed-not-aligned -Wno-dangling-else -Wno-missing-field-initializers -Wno-unused-parameter -O2 -fno-ident -fdata-sections -ffunction-sections -fno-omit-frame-pointer -g0 -fvisibility=hidden -std=gnu++14 -Wno-narrowing -Wno-class-memaccess -Wno-attributes -Wno-class-memaccess -Wno-subobject-linkage -Wno-invalid-offsetof -Wno-return-type -Wno-deprecated-copy -fno-exceptions -fno-rtti -fvisibility-inlines-hidden -c ../../3rdparty/chromium/third_party/webrtc/call/call.cc -o obj/third_party/webrtc/call/call/call.o
ninja: build stopped: subcommand failed.
make[4]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src/core'
make[3]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src/core'
make[2]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine/src'
make[1]: Leaving directory `/home/me/my_soft/qt-everywhere-src-5.15.5/qtwebengine'

odelaune

I guess this is because the build is done in parallel. Try to force the number of jobs to 1 to see what is the exact error.

yanni

@odelaune At first, I did run

make -j4

but it failed. So I switched to

make

The output I posted in the orignal post is the result of

make

Do I have to clean the previous result by make clean before re-run make?

daniel azuelos

@yanni said in Build qt5.15, ninja fails randomly:

Do I have to clean the previous result by make clean before re-run make?

Yes.

run

make clean
make