[Buildroot] [RFC 0/2] Qt5 bump latest version to 5.10.0

["Gaël PORTAY" <gael.portay@savoirfairelinux.com>]

All,

I am now able to build all the Qt modules in 5.10.1.

On Tue, Feb 13, 2018 at 10:23:00AM -0500, Ga?l PORTAY wrote:
> All,
> 
> On Mon, Feb 12, 2018 at 05:20:46PM -0500, Ga?l PORTAY wrote:
> > All,
> > 
> > On Sun, Feb 11, 2018 at 11:13:18AM -0500, Ga?l PORTAY wrote:
> > > But I met a link issue with an 64bit host tool with lpthread. If someone
> > > may help about this issue...
> > > 
> > > 	FAILED: host/transport_security_state_generator 
> > > 	/home/gportay/src/buildroot/output-qt5.10/host/bin/python2 "../../3rdparty/chromium/build/toolchain/gcc_link_wrapper.py" --output="host/transport_security_state_generator" -- /usr/bin/g++ -Wl,--fatal-warnings -fPIC -Wl,-z,noexecstack -Wl,-z,now -Wl,-z,relro -Wl,-z,defs -Wl,--no-as-needed -lpthread -Wl,--as-needed -m64 -Wl,-O1 -Wl,--gc-sections -Wl,-rpath-link=host -Wl,--disable-new-dtags -L/home/gportay/src/buildroot/output-qt5.10/host/x86_64-buildroot-linux-gnu/sysroot/usr/lib -o "host/transport_security_state_generator" -Wl,--start-group @"host/transport_security_state_generator.rsp"  -Wl,--end-group   -ldl -lpthread -lrt -lnss3 -lnssutil3 -lsmime3 -lplds4 -lplc4 -lnspr4 
> > > 	/usr/bin/ld: cannot find /lib64/libpthread.so.0
> > > 	/usr/bin/ld: cannot find /usr/lib64/libpthread_nonshared.a
> > > 	collect2: error: ld returned 1 exit status
> > > 	ninja: build stopped: subcommand failed.
> > > 	Makefile.gn_run:449: recipe for target 'run_ninja' failed
> > > 
> > > The libpthread.so present in host directory is a ld script:
> > > 
> > > 	$ cat host/x86_64-buildroot-linux-gnu/sysroot/usr/lib64/libpthread.so 
> > > 	/* GNU ld script
> > > 	   Use the shared library, but some functions are only in
> > > 	   the static library, so try that secondarily.  */
> > > 	OUTPUT_FORMAT(elf64-x86-64)
> > > 	GROUP ( /lib64/libpthread.so.0 /usr/lib64/libpthread_nonshared.a )
> > > 
> > > When the script is removed, I met another link issue with other
> > > libraries.
> > > 
> > > 	/usr/bin/ld: cannot find /lib64/libm.so.6
> > > 	/usr/bin/ld: cannot find /usr/lib64/libmvec_nonshared.a
> > > 	/usr/bin/ld: cannot find /lib64/libmvec.so.1
> > >
> > 
> > Build is also broken for rpi3...
> > 
> > 	FAILED: host/transport_security_state_generator
> > 	/home/gportay/src/buildroot/output-qt5.10-rpi3/host/bin/python2 "../../3rdparty/chromium/build/toolchain/gcc_link_wrapper.py" --output="host/transport_security_state_generator" -- /usr/bin/g++ -Wl,--fatal-warnings -fPIC -Wl,-z,noexecstack -Wl,-z,now -Wl,-z,relro -Wl,-z,defs -Wl,--no-as-needed -lpthread -Wl,--as-needed -m64 -Wl,-O1 -Wl,--gc-sections -Wl,-rpath-link=host -Wl,--disable-new-dtags -L/home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib -o "host/transport_security_state_generator" -Wl,--start-group @"host/transport_security_state_generator.rsp"  -Wl,--end-group   -ldl -lpthread -lrt -lnss3 -lnssutil3 -lsmime3 -lplds4 -lplc4 -lnspr4
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libpthread.so when searching for -lpthread
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libpthread.a when searching for -lpthread
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libdl.so when searching for -ldl
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libdl.a when searching for -ldl
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libpthread.so when searching for -lpthread
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libpthread.a when searching for -lpthread
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/librt.so when searching for -lrt
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/librt.a when searching for -lrt
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libnss3.so when searching for -lnss3
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libnssutil3.so when searching for -lnssutil3
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libsmime3.so when searching for -lsmime3
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libplds4.so when searching for -lplds4
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libplc4.so when searching for -lplc4
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libnspr4.so when searching for -lnspr4
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libstdc++.so when searching for -lstdc++
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libstdc++.a when searching for -lstdc++
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libm.so when searching for -lm
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libm.a when searching for -lm
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libc.so when searching for -lc
> > 	/usr/bin/ld: skipping incompatible /home/gportay/src/buildroot/output-qt5.10-rpi3/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib/libc.a when searching for -lc
> > 	collect2: error: ld returned 1 exit status
> > 
> > It seems the build-system (ninja?) is trying to link a host tool using
> > arm libraries...
> 
> After investigation, qtwebengine uses the pkg-config wrapper to get
> libs/cflags for both target and host package...
> 
> That is why ninja is trying to link target libraries for an host tool...
> 
> I guess qtwebengine is broken for cross-compile for now :/

I found the issue with qt5webengine.

QtWebEngine/WebEngine uses the same pkg-config (buildroot wrapper) to
get cflags/libs to build host and target binaries. That is why ninja is
mixing target libraries when it builds an host tool.

I added a new wrapper host-pkg-config in the pkgconf package; and told
qtwebengine to use this host-pkg-config wrapper.

I will send the patches for next branch soon.

Regards,
Gael