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
fhledesma@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.