On 4 February 2013 02:08, Matthew Gretton-Dann <matthew.gretton-d...@linaro.org> wrote: > On 2 February 2013 00:13, Derek Rollend <derek.roll...@gmail.com> wrote: >> Hello, >> >> I am currently trying to determine how much I can optimize OpenCV using the >> ARM's VFP and the Linaro nano image. I have downloaded the >> arm-linux-gnueabihf-gcc & arm-linux-gnueabihf-g++ compilers, successfully >> cross-compiled OpenCV using those compilers (with -O3 -mfloat-abi=hard >> -ftree-vectorize -funroll-loops), and compiled an example OpenCV program >> with the arm-linux-gnueabihf-g++ compiler (with the same flags). However, >> when I try and run my executable within Linaro (running on a gumstix overo) >> I get "/lib/arm-linux-gnueabihf/libm.so.6: version `GLIBC_2.15' not found >> (required by /usr/lib/libopencv_core.so.2.2). >> >> I assume that this is because on my build machine (x86 Ubuntu 10.04) where I >> cross compiled the OpenCV libraries I am using libc-2.15, and on the target >> (gumstix) the loader can't find libc-2.15. However, within the >> gcc-linaro-arm-linux-gnueabihf-4.7 tar ball I downloaded today, there is a >> libc-2.15.so file in there that I copied into /lib/ on the gumstix. Still >> no success though when I try running my executable. >> >> Any recommendations on things to try? I am hesitant to just put a newer >> version of glibc in Linaro as it seems like that could screw a lot of things >> up. Should I attempt to re-build OpenCV somehow with an older version of >> glibc (namely libc-2.13)? > > Expand the entire sysroot tarball you have onto your ARM board into > some location (say /opt/gcc-linaro - but anywhere will do). Then do: > LD_LIBRARY_PATH=/opt/gcc-linaro/lib/arm-linux-gnueabihf program-to-execute > args
Please try to use --sysroot option. copy the entire sysroot directories (/lib, /usr/lib, /usr/include) you have onto your ARM board into some location (say /opt/gcc-linaro) on your host machine and keep the dir layout, i.e. After copy, you will have: /opt/gcc-linaro/lib/... /opt/gcc-linaro/usr/lib/... /opt/gcc-linaro/usr/inlcude... Then compile your project with additional gcc option: --sysroot=/opt/gcc-linaro/ -Zhenqiang _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
