cross-compile opencv for arm : c++: error: unrecognized command line option ‘-mthumb’; did you mean ‘-mtbm’?

asked 2019-01-13 00:32:50 -0500

mikeitexpert gravatar image

updated 2019-01-13 03:33:01 -0500

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

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Comments

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...

LBerger gravatar imageLBerger ( 2019-01-13 04:19:34 -0500 )edit

Thanks for the quick response ... I guess I need some more details on how to repeat these steps.

Regards

mikeitexpert gravatar imagemikeitexpert ( 2019-01-13 05:42:21 -0500 )edit