在 macports 上使用 opencv 编译代码

Question

我已经用通过 macports 安装的 opencv 编译了代码。但是，在运行我的 makefile 时，我得到了

ld: warning: in /opt/local/lib/libopencv_core.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_imgproc.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_highgui.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_ml.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_video.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_features2d.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_calib3d.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_objdetect.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_contrib.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_legacy.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
ld: warning: in /opt/local/lib/libopencv_flann.dylib, file was built for unsupported file format which is not the architecture being linked (i386)

这是否意味着所有库都没有链接？我该怎么办？

Answer 1

问题是您正在为一种架构（可能是 x86_64，即 Intel 64 位）编译代码，并且您要求使用 i386 架构（即 32 位）构建 macports

所以你需要改变一个或另一个。

1) 更改您的代码 - 在编译规则的 gcc 选项中添加 -arch x86_64。

2) 卸载 macports 然后重新安装并在 macports.conf 文件中选择所需的 build_arch 并检查应该默认为两者的 Universal_archs。