Discussion :

[Darctansa]

Bonjour à tous,
je cherche à utiliser Mongodb dans un projet c/c++ destiné à être exécuté sur une Raspberry Pi (Debian Jessy).

Quelque détails sur mon environnement :

IDE : Eclipse neon.2
Tools chain : arm-linux-gnueabihf (SysGCC)

Les fichiers libmongoc-1.0.so et libbson-1.0.so sont présent :
Sur mon pc dans -> C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib
Sur ma Raspberry -> \usr\local\lib

Lorsque je compile mon projet j'ai l'erreur suivant :

22:41:33 **** Incremental Build of configuration Debug for project R3Pi.Data ****
make all
'Building target: libR3Pi.Data.so'
'Invoking: Cross G++ Linker'
arm-linux-gnueabihf-g++ -v -L"C:\Users\MOI\workspace_RaspberryPi\R3Pi.Communication" -L"C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib" -L"C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\lib\arm-linux-gnueabihf" -L"C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\lib" -L"C:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\lib\arm-linux-gnueabihf" -L"C:\Users\MOI\workspace_RaspberryPi\R3Pi.Data" -shared -o "libR3Pi.Data.so" ./src/Infrastructure/DbFactory.o ./src/Infrastructure/RepositoryBase.o ./src/BootLoader.o -lz -lm -lrt -llibmongoc-1.0 -ldl -lpthread
Using built-in specs.
COLLECT_GCC=arm-linux-gnueabihf-g++
COLLECT_LTO_WRAPPER=c:/sysgcc/raspberry/bin/../libexec/gcc/arm-linux-gnueabihf/4.9/lto-wrapper.exe
Target: arm-linux-gnueabihf
Configured with: ../gcc-4.9.2/src/configure --enable-win32-registry=SysGCC-arm-linux-gnueabihf-4.9.2 --prefix /q/gnu/linux/raspberry-jessie/out/ --disable-nls --without-libiconv-prefix --with-sysroot=/q/gnu/linux/raspberry-jessie/out/arm-linux-gnueabihf/sysroot --enable-languages=c,c++ --enable-shared --enable-linker-build-id --without-included-gettext --enable-threads=posix --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libitm --disable-libquadmath --with-arch-directory=arm --disable-sjlj-exceptions --with-arch=armv6 --with-fpu=vfp --with-float=hard --enable-checking=release --target arm-linux-gnueabihf
Thread model: posix
gcc version 4.9.2 (GCC)
COMPILER_PATH=c:/sysgcc/raspberry/bin/../libexec/gcc/arm-linux-gnueabihf/4.9/;c:/sysgcc/raspberry/bin/../libexec/gcc/arm-linux-gnueabihf/;c:/sysgcc/raspberry/bin/../libexec/gcc/;c:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/4.9/../../../../arm-linux-gnueabihf/bin/
LIBRARY_PATH=c:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/4.9/;c:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/;c:/sysgcc/raspberry/bin/../lib/gcc/;c:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/4.9/../../../../arm-linux-gnueabihf/lib/;c:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/lib/arm-linux-gnueabihf/;c:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/lib/;c:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/usr/lib/arm-linux-gnueabihf/;c:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-LC:\Users\MOI\workspace_RaspberryPi\R3Pi.Communication' '-LC:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib' '-LC:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\lib\arm-linux-gnueabihf' '-LC:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\lib' '-LC:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\lib\arm-linux-gnueabihf' '-LC:\Users\MOI\workspace_RaspberryPi\R3Pi.Data' '-shared' '-o' 'libR3Pi.Data.so' '-shared-libgcc' '-march=armv6' '-mfloat-abi=hard' '-mfpu=vfp' '-mtls-dialect=gnu'
c:/sysgcc/raspberry/bin/../libexec/gcc/arm-linux-gnueabihf/4.9/collect2.exe -plugin c:/sysgcc/raspberry/bin/../libexec/gcc/arm-linux-gnueabihf/4.9/liblto_plugin-0.dll -plugin-opt=c:/sysgcc/raspberry/bin/../libexec/gcc/arm-linux-gnueabihf/4.9/lto-wrapper.exe -plugin-opt=-fresolution=C:\Users\MOI\AppData\Local\Temp\ccSrLS1n.res -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc_s --sysroot=c:\sysgcc\raspberry\bin\../arm-linux-gnueabihf/sysroot --build-id --eh-frame-hdr -shared -dynamic-linker /lib/ld-linux-armhf.so.3 -X --hash-style=gnu -m armelf_linux_eabi -o libR3Pi.Data.so c:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/usr/lib/arm-linux-gnueabihf/crti.o c:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/4.9/../../../../arm-linux-gnueabihf/lib/crtbeginS.o -LC:\Users\MOI\workspace_RaspberryPi\R3Pi.Communication -LC:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\local\lib -LC:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\lib\arm-linux-gnueabihf -LC:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\usr\lib -LC:\SysGCC\Raspberry\arm-linux-gnueabihf\sysroot\lib\arm-linux-gnueabihf -LC:\Users\MOI\workspace_RaspberryPi\R3Pi.Data -Lc:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/4.9 -Lc:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf -Lc:/sysgcc/raspberry/bin/../lib/gcc -Lc:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/4.9/../../../../arm-linux-gnueabihf/lib -Lc:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/lib/arm-linux-gnueabihf -Lc:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/lib -Lc:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/usr/lib/arm-linux-gnueabihf -Lc:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/usr/lib ./src/Infrastructure/DbFactory.o ./src/Infrastructure/RepositoryBase.o ./src/BootLoader.o -lz -lrt -llibmongoc-1.0 -ldl -lpthread -lstdc++ -lm -lgcc_s -lc -lgcc_s c:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/4.9/../../../../arm-linux-gnueabihf/lib/crtendS.o c:/sysgcc/raspberry/bin/../arm-linux-gnueabihf/sysroot/usr/lib/arm-linux-gnueabihf/crtn.o
c:/sysgcc/raspberry/bin/../lib/gcc/arm-linux-gnueabihf/4.9/../../../../arm-linux-gnueabihf/bin/ld.exe: cannot find -llibmongoc-1.0
collect2.exe: error: ld returned 1 exit status
make: *** [libR3Pi.Data.so] Error 1

22:41:34 Build Finished (took 396ms)

Je n'arrive pas à comprendre pourquoi il ne trouve pas la librairie ?

Lors que j'ai installé la librairies sur ma Raspberry j'ai eu le message suivant :

----------------------------------------------------------------------
Libraries have been installed in:
/usr/local/lib

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the '-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the 'LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the 'LD_RUN_PATH' environment variable
during linking
- use the '-Wl,-rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to '/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------

[LittleWhite]

Bonjour,

Si c'est de la cross compilation, vérifiez bien que la bibliothèque installée est au bon format et pour la bonne architecture CPU (avec file, par exemple). Sinon, le compilateur l'ignore (sans l'indiquer).

[Bktero]

-llibmongoc

Ne faudrait-il pas mettre -lmongoc ?