cross-compile opencv for arm : c++: error: unrecognized command line option ‘-mthumb’; did you mean ‘-mtbm’?
Dear All,
I am trying to cross-compile opencv 4.0/3.4 for a Tinker Board - ARM-based processor — the Rockchip RK3288
I am using Ubuntu 18.04 as host machine.
I pretty much followed everything mentioned here.
But when I try the cmake using below:
mike@mike-laptop:~/opencv-3.4.5/build$ cmake -DCMAKE_TOOLCHAIN_FILE=../platforms/linux/arm-gnueabi.toolchain.cmake ../ I am getting the below error:
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed. Compiler: /usr/bin/c++ Build flags: -mthumb;;-fdata-sections;-Wa,--noexecstack;-fsigned-char;-Wno-psabi Id flags:
The output was: 1 c++: error: unrecognized command line option ‘-mthumb’; did you mean ‘-mtbm’?
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed. Compiler: /usr/bin/c++ Build flags: -mthumb;;-fdata-sections;-Wa,--noexecstack;-fsigned-char;-Wno-psabi Id flags: -c
The output was: 1 c++: error: unrecognized command line option ‘-mthumb’; did you mean ‘-mtbm’?
and tons of more messages
I know nothing about cross compilation but may be you can find some parameters in buildbot https://pullrequest.opencv.org/buildb... or https://pullrequest.opencv.org/buildb... (master) or https://pullrequest.opencv.org/buildb... or https://pullrequest.opencv.org/buildb... (3.4)
and all platforms : https://pullrequest.opencv.org/#/summ...
Thanks for the quick response ... I guess I need some more details on how to repeat these steps.
Regards