I added the lib path explicitly so I knew that arm-linux-gnueabihf-g++ was definitely linking against the correct hard float libraries. Perhaps this is unnecessary, but I just wanted to be sure. I've been using OpenCV 2.2 because that was the version that was known to compile successfully from that TI wiki page you sent earlier. I am now trying with 2.4.0, I'll let you know if I succeed.
It's definitely not easy. All the tools seem to be there, it's piecing everything together correctly that is the tough part. Push on! On Tue, Feb 12, 2013 at 1:35 PM, Fernan <fhlede...@gmail.com> wrote: > Hi Derek, > > Derek Rollend <derek.rollend@...> writes: > > > > > > > Add the Linaro toolchain bin directory to your PATH environment variable: > > export > PATH="/opt/gcc-linaro-arm-linux-gnueabihf-4.7-2013.01-20130125_linux > >>/bin:$PATH" > > ok. I thought there was a CMake variable like CMAKE_C_COMPILER_PATH. I use > this > http://www.cmake.org/Wiki/CMake_FAQ#How_do_I_use_a_different_compiler.3F > (method3). > > > On Mon, Feb 11, 2013 at 4:04 PM, Fernan > <fhlede...@gmail.com> wrote: > > Derek Rollend <derek.rollend <at> ...> writes: > > > > > > > > > Fernan, > > > I'm using CMake 2.8.0. I have not tried to compile OpenCV with FFMPEG > > > support > > yet, although I will be trying to do this soon. I have only successfully > > compiled OpenCV 2.2 using the Linaro hard float compiler. Here is my > > toolchain.cmake file: > > > > > > > > > set( CMAKE_SYSTEM_NAME Linux ) > > > set( CMAKE_SYSTEM_PROCESSOR arm ) > > > set( CMAKE_C_COMPILER arm-linux-gnueabihf-gcc ) > > > set( CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++ ) > > > set( CMAKE_CXX_FLAGS_RELEASE "-L > > >/opt/gcc-linaro-arm-linux-gnueabihf-4.7-2013.01-20130125_linux/ > >> >arm-linux-gnueabihf/lib -O3 -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=hard > >> >-ftree-vectorize -ftree-vectorizer-verbose=3 -funroll-loops" ) > >> > set( CMAKE_CXX_FLAGS_DEBUG "-L /opt/gcc-linaro-arm-linux-gnueabihf- > >> >4.7-2013.01-20130125_linux/arm-linux-gnueabihf/lib > >> >-O3 -mcpu=cortex-a8 -mfpu=neon -mfloat-abi=hard -ftree-vectorize > >> >-ftree-vectorizer-verbose=3 -funroll-loops" ) > > > > > I have just successfully compiled but without FFMPEG too, that is the > problem. > > but first, I will ask you some question: > > Why you need to add the link path /opt/gcc-linaro-arm-linux-gnueabihf- > 4.7-2013.01-20130125_linux/arm-linux-gnueabihf/lib? > > Why you use OpenCV2.2? The lastest stable release is OpenCV2.4.3. > > You see, I'm a newbie about cross compiling, I'll have to study concepts of > cross-compilation, I thought it was easy. > > > > > > _______________________________________________ > linaro-toolchain mailing list > linaro-toolchain@lists.linaro.org > http://lists.linaro.org/mailman/listinfo/linaro-toolchain >
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