Qt5.11.0下安装编译dlib19.9

参考博客 https://blog.csdn.net/qq_38880380/article/details/78774540

1 github下载源文件https://github.com/davisking/dlib/releases/tag/v19.9

2  解压到 主目录/home/user 下

3 由于之前编译过opencv，以下库未安装

sudo apt-get install build-essential cmake pkg-config
sudo apt-get install libatlas-base-dev libboost-python-dev

4 先编译example.参考官网步骤 http://dlib.net/compile.html

cd examples
mkdir build
cd build
cmake ..
cmake --build . --config Release

5 再编译库

cd dlib-19.9/
cd dlib
mkdir build
cd build
cmake ..
cmake --build . --config Release
sudo make install
sudo ldconfig

6 根据/usr/local/lib/pkgconfig/dlib-1.pc中

libdir=/usr/local/lib
includedir=/usr/local/include

提示，将dlib的头文件和库放入指定位置

#拷贝库文件
cd /home/user/dlib19.9/dlib/build
sudo cp libdlib.so /usr/local/lib
#拷贝头文件
cd ../../
sudo cp -r dlib/  /usr/local/include

6 打开qt creator 新建工程的.pro文件，添加

SOURCES += /usr/local/include/dlib/all/source.cpp
PKGCONFIG += x11

unix: CONFIG += link_pkgconfig
unix: PKGCONFIG += /usr/local/lib/pkgconfig/dlib-1.pc

unix|win32: LIBS += -lpthread

unix|win32: LIBS += -ljpeg
unix|win32: LIBS += -lpng

QMAKE_CXXFLAGS += -std=c++11 -DDLIB_PNG_SUPPORT -DDLIB_JPEG_SUPPORT

7 之后就可运行示例中的face_detection_ex.cpp了