External libraries on Raspberry Pi 3 B+

Crindu

@sneubert Can you post your rsync example? I don't know exactly what and where to copy. Do I have to copy only the folders in which FFmpeg was installed or everything from the Raspberry in the sysroot folder ?

jsulm

@Crindu said in External libraries on Raspberry Pi 3 B+:

/home/cristiano/FFmpeg-compiled/compiled/lib

Are the libs really in this directory? Are they built using same compiler as you use for your app?

sneubert

If you install for example libavcodec-dev on your rpi, the header and libraries get installed in /usr/...
You now need the installed header and libraries on your development host. Your cross-compiler is working with a local copy of the rpi sysroot.

Like in this guide https://wiki.qt.io/RaspberryPi2EGLFS every time you install some new dev libaries with apt-get on you rpi, you have to copy the new files to your development host.

Take a look at Step 8.

rsync -avz pi@raspberrypi.local:/lib sysroot
rsync -avz pi@raspberrypi.local:/usr/include sysroot/usr
rsync -avz pi@raspberrypi.local:/usr/lib sysroot/usr
rsync -avz pi@raspberrypi.local:/opt/vc sysroot/opt

As these libaries are in the system path of your local sysroot, you can now just include headers with #include <...> and link with LIBS += -l...

Crindu

@jsulm Yes they are there and I built them with the cross compiler

Crindu

@sneubert Ok thanks, something changed. Now I have a lot of compilation error relative to other libraries:

11:28:58: Running steps for project untitled1...
11:28:58: Configuration unchanged, skipping qmake step.
11:28:58: Starting: "/usr/bin/make" 
/home/cristiano/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ -mfloat-abi=hard --sysroot=/home/cristiano/raspi/sysroot -Wl,-rpath-link,/home/cristiano/raspi/sysroot/opt/vc/lib -Wl,-rpath-link,/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf -Wl,-rpath-link,/home/cristiano/raspi/sysroot/lib/arm-linux-gnueabihf -o untitled1 main.o   -lavcodec -lavdevice -lavformat -lpthread 
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_create(unsigned int&, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libzmq.so.5: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::rfind(char, unsigned int) const@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopencv_core.so.2.4: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::find(char, unsigned int) const@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libsnappy.so.1: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_append(char const*, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libzmq.so.5: undefined reference to `VTT for std::__cxx11::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__throw_out_of_range_fmt(char const*, ...)@GLIBCXX_3.4.20'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_stringbuf<char, std::char_traits<char>, std::allocator<char> >::_M_sync(char*, unsigned int, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::assign(char const*)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_assign(std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> > const&)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::basic_ostringstream(std::_Ios_Openmode)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/librubberband.so.2: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_mutate(unsigned int, unsigned int, char const*, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::reserve(unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_assign(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libjack.so.0: undefined reference to `operator delete(void*, unsigned int)@CXXABI_1.3.9'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libsnappy.so.1: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::resize(unsigned int, char)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::reserve(unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::find(char const*, unsigned int, unsigned int) const@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::replace(unsigned int, unsigned int, char const*, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::append(char const*)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libzmq.so.5: undefined reference to `std::__cxx11::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_stringstream()@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libjack.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::compare(char const*) const@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<wchar_t, std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_mutate(unsigned int, unsigned int, wchar_t const*, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopencv_core.so.2.4: undefined reference to `operator delete[](void*, unsigned int)@CXXABI_1.3.9'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::find_last_not_of(char const*, unsigned int, unsigned int) const@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `vtable for std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libjack.so.0: undefined reference to `std::runtime_error::runtime_error(char const*)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `__cxa_throw_bad_array_new_length@CXXABI_1.3.8'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `VTT for std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace_aux(unsigned int, unsigned int, unsigned int, char)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::random_device::_M_init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::runtime_error::runtime_error(char const*)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libzmq.so.5: undefined reference to `vtable for std::__cxx11::basic_stringstream<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_erase(unsigned int, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::range_error::range_error(char const*)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_construct(unsigned int, char)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_istringstream()@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::find_first_of(char const*, unsigned int, unsigned int) const@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `VTT for std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator=(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `vtable for std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::range_error::range_error(char const*)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_ostringstream()@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::find_last_of(char const*, unsigned int, unsigned int) const@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libjack.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_create(unsigned int&, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::find_first_not_of(char const*, unsigned int, unsigned int) const@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libjack.so.0: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::_M_replace(unsigned int, unsigned int, char const*, unsigned int)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopencv_core.so.2.4: undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::swap(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `vtable for std::__cxx11::basic_stringbuf<char, std::char_traits<char>, std::allocator<char> >@GLIBCXX_3.4.21'
/home/cristiano/raspi/sysroot/usr/lib/arm-linux-gnueabihf/libopenmpt.so.0: undefined reference to `std::__cxx11::basic_stringbuf<char, std::char_traits<char>, std::allocator<char> >::str() const@GLIBCXX_3.4.21'
Makefile:139: recipe for target 'untitled1' failed
collect2: error: ld returned 1 exit status
make: *** [untitled1] Error 1
11:28:59: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project untitled1 (kit: Raspberry kit)
When executing step "Make"
11:28:59: Elapsed time: 00:00.

sneubert

sorry you have to repeate Step 9 after rsync

Crindu

@sneubert I just repeated step 9 but the errors remains

sneubert

this seems to be a compiler missmatch between your cross-compiler an the compiler used to create the library, one thing you can try is to put

#define _GLIBCXX_USE_CXX11_ABI 0

before include any standard library in your code

Crindu

@sneubert Unfortunately it doesn't work. I noticed that copying the file on the Raspberry and compiling from there, it works! And this is strange because the compiler should be the same as the toolchain

sneubert

what version of gcc are you using for cross compiling

/home/cristiano/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ -v

what version of gcc is on your rpi

g++ -v

Crindu

@sneubert
1:

Using built-in specs.
COLLECT_GCC=/home/cristiano/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++
COLLECT_LTO_WRAPPER=/home/cristiano/raspi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/../libexec/gcc/arm-linux-gnueabihf/4.8.3/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: /home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/.build/src/gcc-linaro-4.8-2014.03/configure --build=x86_64-build_unknown-linux-gnu --host=x86_64-build_unknown-linux-gnu --target=arm-linux-gnueabihf --prefix=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/install --with-sysroot=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fortran --disable-multilib --enable-multiarch --with-arch=armv6 --with-tune=arm1176jz-s --with-fpu=vfp --with-float=hard --with-pkgversion='crosstool-NG linaro-1.13.1+bzr2650 - Linaro GCC 2014.03' --with-bugurl=https://bugs.launchpad.net/gcc-linaro --enable-__cxa_atexit --enable-libmudflap --enable-libgomp --enable-libssp --with-gmp=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-mpfr=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-mpc=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-isl=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-cloog=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --with-libelf=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/.build/arm-linux-gnueabihf/build/static --enable-threads=posix --disable-libstdcxx-pch --enable-linker-build-id --enable-plugin --enable-gold --with-local-prefix=/home/zhehe01/work/bzr/pi-build/builds/arm-linux-gnueabihf-raspbian-linux/install/arm-linux-gnueabihf/libc --enable-c99 --enable-long-long --with-float=hard
Thread model: posix
gcc version 4.8.3 20140303 (prerelease) (crosstool-NG linaro-1.13.1+bzr2650 - Linaro GCC 2014.03)

2:

Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/6/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Raspbian 6.3.0-18+rpi1+deb9u1' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-6 --program-prefix=arm-linux-gnueabihf- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-armhf/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-armhf --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-armhf --with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-sjlj-exceptions --with-arch=armv6 --with-fpu=vfp --with-float=hard --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
Thread model: posix
gcc version 6.3.0 20170516 (Raspbian 6.3.0-18+rpi1+deb9u1)

I think I need to update the cross compiler. Can I simply download the same version of the Raspberry and set it as compiler in the Qt Creator kit?

sneubert

I always use the linaro cross-compiler, latest gcc 7.3.1 should do
https://releases.linaro.org/components/toolchain/binaries/latest/arm-linux-gnueabihf/
But I think you have to rebuild qt with this compiler.

Crindu

@sneubert Ok I'll try to repeat steps 10 and 11 with the latest version of gcc

Crindu

@sneubert It worked at first try! Thank you so much, you really helped me a lot!!

Huy hust

@Crindu Dear, I am facing with problem that same with your. But i dont know how to update gcc in cross compile, can you help me?