ubuntu 14.04 编译opencv-3.4.2 报错解决：错误信息：/usr/bin/ld: /usr/local/lib/libavformat.a(allformats.o): relocation R_X86_64_32 against `.bss‘ can not be used when making a shared object; recompile with -fPIC/usr/local/lib/libavformat.a: error adding symbols: 错误的值collect2: error: ld returned 1 exit statusmake[2]: *** [lib/libopencv_videoio.so.3.4.2] 错误 1make[1]: *** [modules/videoio/CMake...
wget http://download.savannah.gnu.org/releases/freetype/freetype-2.10.0.tar.bz2tar -xf freetype-2.10.0.tar.bz2cd freetype-2.10.0 ./configure --prefix=/opt/Qt5.12.3/Tools/QtCreator/lib/Qt/ make cd ./objs/.libs sudo cp libfreetype.so /opt/Qt5.12.3/Tools/QtCreator/lib/Qt/lib sudo cp libfreetype.so.6 /opt/Qt5.12.3/Tools/QtCreator/lib/Qt/lib sudo cp libfreetype.so.6.17.0 /opt/Qt5.12.3/Tools/QtCreator/...