pkg-config 返回带有前缀和后缀的 lib 文件答案

【问题标题】：pkg-config return lib files with prefix and suffixpkg-config 返回带有前缀和后缀的 lib 文件
【发布时间】：2017-11-06 06:21:20
【问题描述】：

我编译了opencv3并默认安装了它。然后我使用 pkg-config 命令获取库，如下所示：

echo `pkg-config --cflags --libs opencv
-I/usr/local/include/opencv -I/usr/local/include -L/usr/local/lib -llibopencv_dnn.3.3.1.dylib -llibopencv_ml.3.3.1.dylib -llibopencv_objdetect.3.3.1.dylib -llibopencv_shape.3.3.1.dylib -llibopencv_stitching.3.3.1.dylib -llibopencv_superres.3.3.1.dylib -llibopencv_videostab.3.3.1.dylib -llibopencv_calib3d.3.3.1.dylib -llibopencv_features2d.3.3.1.dylib -llibopencv_highgui.3.3.1.dylib -llibopencv_videoio.3.3.1.dylib -llibopencv_imgcodecs.3.3.1.dylib -llibopencv_video.3.3.1.dylib -llibopencv_photo.3.3.1.dylib -llibopencv_imgproc.3.3.1.dylib -llibopencv_flann.3.3.1.dylib -llibopencv_core.3.3.1.dylib

但返回的字符串包含lib前缀和后缀，不能用于opencv app编译。

【问题讨论】：

标签： opencv pkg-config

【解决方案1】：

我发现opencv的.pc文件包含

cat /usr/local/lib/pkgconfig/opencv.pc                           
# Package Information for pkg-config

prefix=/usr/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir_old=${prefix}/include/opencv
includedir_new=${prefix}/include

Name: OpenCV
Description: Open Source Computer Vision Library
Version: 3.3.1
Libs: -L${exec_prefix}/lib -llibopencv_dnn.3.3.1.dylib -llibopencv_ml.3.3.1.dylib -llibopencv_objdetect.3.3.1.dylib -llibopencv_shape.3.3.1.dylib -llibopencv_stitching.3.3.1.dylib -llibopencv_superres.3.3.1.dylib -llibopencv_videostab.3.3.1.dylib -llibopencv_calib3d.3.3.1.dylib -llibopencv_features2d.3.3.1.dylib -llibopencv_highgui.3.3.1.dylib -llibopencv_videoio.3.3.1.dylib -llibopencv_imgcodecs.3.3.1.dylib -llibopencv_video.3.3.1.dylib -llibopencv_photo.3.3.1.dylib -llibopencv_imgproc.3.3.1.dylib -llibopencv_flann.3.3.1.dylib -llibopencv_core.3.3.1.dylib
Libs.private: 
Cflags: -I${includedir_old} -I${includedir_new}

所以，pkg-config 直接返回内容。

最后我编辑了opencv.pc文件，问题解决了。

【讨论】：