Linux安装opencv3.2.0遇到的一个坑

最新推荐文章于 2025-04-13 23:36:00 发布

冯比伦

最新推荐文章于 2025-04-13 23:36:00 发布

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分类专栏： Linux 文章标签： linux opencv c++

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在尝试使用make-j4编译OpenCV 3.2.0时遇到错误，链接器报告libopencv_core.so.3.2.0中缺少cblas_sgemm等cblas函数的定义。尽管在cmake阶段似乎已经找到并链接了cblas库，但编译仍然失败。为了解决这个问题，建议删除/usr/lib/aarch64-linux-gnu/下的libcblas.a和libcblas.so，然后重新运行cmake、make和make install步骤。经过这个过程，编译最终成功完成，所有目标如cv2.so和opencv_python2都已正确构建。

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[ 63%] Linking CXX executable ../../bin/opencv_visualisation
/usr/bin/ld: ../../lib/libopencv_core.so.3.2.0: undefined reference to `cblas_sgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, float, float const*, int, float const*, int, float, float*, int)'
/usr/bin/ld: ../../lib/libopencv_core.so.3.2.0: undefined reference to `cblas_zgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, void const*, void const*, int, void const*, int, void const*, void*, int)'
/usr/bin/ld: ../../lib/libopencv_core.so.3.2.0: undefined reference to `cblas_dgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, double, double const*, int, double const*, int, double, double*, int)'
/usr/bin/ld: ../../lib/libopencv_core.so.3.2.0: undefined reference to `cblas_cgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, void const*, void const*, int, void const*, int, void const*, void*, int)'
collect2: error: ld returned 1 exit status
make[2]: *** [apps/visualisation/CMakeFiles/opencv_visualisation.dir/build.make:92: bin/opencv_visualisation] Error 1
make[1]: *** [CMakeFiles/Makefile2:7078: apps/visualisation/CMakeFiles/opencv_visualisation.dir/all] Error 2
make: *** [Makefile:163: all] Error 2

在make -j4编译的时候报错，出现编译问题

/usr/bin/ld: …/…/lib/libopencv_core.so.3.2.0: undefined reference to `cblas_sgemm(CBLAS_ORDER, CBLAS_TRANSPOSE, CBLAS_TRANSPOSE, int, int, int, float, float const*, int, float const*, int, float, float*, int)’

提示链接不到这几个cblas函数的定义，但是在cmake …操作的时候是找到了cblas库的(下面倒数第二行)

--     Extra dependencies:          
/usr/lib64/libjpeg.so /usr/lib/aarch64-linux-gnu/libpng.so
 /usr/lib/aarch64-linux-gnu/libz.so 
 /usr/lib/aarch64-linux-gnu
 /libtiff.so gtk-x11-2.0 gdk-x11-2.0 pangocairo-1.0 atk-1.0 cairo gdk_pixbuf-2.0 gio-2.0 pangoft2-1.0 pango-1.0 gobject-2.0 glib-2.0 fontconfig freetype gthread-2.0 dc1394 avcodec avformat avutil swscale avresample dl m pthread rt 
 /usr/lib/aarch64-linux-gnu/liblapack.so 
 /usr/lib/aarch64-linux-gnu/libcblas.so 
 /usr/lib/aarch64-linux-gnu/libatlas.so

解决方法
直接删除libcblas.a和libcblas.so

sudo rm -rf /usr/lib/aarch64-linux-gnu/libcblas.a
sudo rm -rf /usr/lib/aarch64-linux-gnu/libcblas.so

再重新编译安装opencv

cmake ..
make
sudo make install

[100%] Built target opencv_perf_stitching
[100%] Linking CXX shared module ../../lib/cv2.so
[100%] Built target opencv_python2

成功