软件包库和头文件安装在哪里？

Question

在Ubuntu中下载并安装软件包后，如何检查库和头文件写入的位置？我相信这与软件包的.pc文件有关，但是我也不知道如何找到该文件。

例如，我已经下载了PCL（点云库）软件包，然后在示例CMakeLists.txt文件中获得了以下内容：

include_directories(${PCL_INCLUDE_DIRS})
link_directories(${PCL_LIBRARY_DIRS})
add_definitions(${PCL_DEFINITIONS})

这些环境变量在哪里定义，我怎么看？

如果我从源代码而不是通过软件包来编译库，这会有什么不同吗？.pc文件会自动创建吗？

Answer 1

如果安装包含 libpcl 开发文件的包

sudo apt-get install libpcl-dev

您可以列出已安装的文件

dpkg -L libpcl-dev

查看所有标题的位置。

...
/usr/include/pcl-1.7/pcl/filters/fast_bilateral.h
/usr/include/pcl-1.7/pcl/filters/voxel_grid_covariance.h
/usr/include/pcl-1.7/pcl/filters/voxel_grid_occlusion_estimation.h
/usr/include/pcl-1.7/pcl/filters/median_filter.h
/usr/include/pcl-1.7/pcl/filters/crop_box.h
/usr/include/pcl-1.7/pcl/filters/voxel_grid_label.h
/usr/include/pcl-1.7/pcl/filters/covariance_sampling.h
/usr/include/pcl-1.7/pcl/filters/random_sample.h
/usr/include/pcl-1.7/pcl/filters/normal_refinement.h
/usr/include/pcl-1.7/pcl/filters/project_inliers.h
/usr/include/pcl-1.7/pcl/filters/fast_bilateral_omp.h
/usr/include/pcl-1.7/pcl/filters/clipper3D.h
/usr/include/pcl-1.7/pcl/filters/convolution.h
/usr/include/pcl-1.7/pcl/filters/passthrough.h
/usr/include/pcl-1.7/pcl/filters/conditional_removal.h
/usr/include/pcl-1.7/pcl/filters/impl
/usr/include/pcl-1.7/pcl/filters/impl/frustum_culling.hpp
/usr/include/pcl-1.7/pcl/filters/impl/conditional_removal.hpp
/usr/include/pcl-1.7/pcl/filters/impl/convolution_3d.hpp
/usr/include/pcl-1.7/pcl/filters/impl/voxel_grid_covariance.hpp
/usr/include/pcl-1.7/pcl/filters/impl/fast_bilateral_omp.hpp
/usr/include/pcl-1.7/pcl/filters/impl/project_inliers.hpp
/usr/include/pcl-1.7/pcl/filters/impl/morphological_filter.hpp
/usr/include/pcl-1.7/pcl/filters/impl/crop_box.hpp
/usr/include/pcl-1.7/pcl/filters/impl/covariance_sampling.hpp
/usr/include/pcl-1.7/pcl/filters/impl/local_maximum.hpp
/usr/include/pcl-1.7/pcl/filters/impl/plane_clipper3D.hpp
/usr/include/pcl-1.7/pcl/filters/impl/bilateral.hpp
/usr/include/pcl-1.7/pcl/filters/impl/voxel_grid_occlusion_estimation.hpp
....