如何列出系统上可用的target_link_libraries？

Question

我正在尝试与我的CMakeLists.txt中的Curl库链接，我知道我应该要求包添加可执行文件并链接库但我不知道如何调用变量名称以及我应该在哪里查看对他们来说，你知道我应该在哪里寻找吗？有没有办法列出系统中我能够在项目中添加的所有库？

这是我的CMakeLists（愚蠢）尝试：

cmake_minimum_required(VERSION 3.3)
project(RadekClientRecon)
find_package(OpenCV REQUIRED)
find_package(CURL REQUIRED)
link_directories(/usr/lib/)
set(SOURCE_FILES main.cpp HttpManager.cpp)
add_executable(RadekClientRecon ${SOURCE_FILES})
target_link_libraries(RadekClientRecon ${OpenCV_LIBS} ${CURL_LIBRARIES})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

如果有帮助的话，我在计算机中搜索了所有“curl”命名文件，如果有自动方式，我也会使用CLion。

rinaldi@rinaldi-home:~/Projects/radekrecon$ sudo find / -name "*curl*" 2> /dev/null 
/home/rinaldi/.atom/packages/atom-beautify/node_modules/jscs/lib/rules/disallow-curly-braces.js
/home/rinaldi/.atom/packages/atom-beautify/node_modules/jscs/lib/rules/require-curly-braces.js
/var/lib/dpkg/info/libcurl3:amd64.list
/var/lib/dpkg/info/python3-pycurl.md5sums
/var/lib/dpkg/info/libcurl3-gnutls:amd64.shlibs
/var/lib/dpkg/info/curl.md5sums
/var/lib/dpkg/info/libcurl3:amd64.postrm
/var/lib/dpkg/info/libcurl3:amd64.md5sums
/var/lib/dpkg/info/python3-pycurl.list
/var/lib/dpkg/info/libcurl3-gnutls:amd64.symbols
/var/lib/dpkg/info/libcurl3-gnutls:amd64.postrm
/var/lib/dpkg/info/libcurl3:amd64.symbols
/var/lib/dpkg/info/libcurl3-gnutls:amd64.md5sums
/var/lib/dpkg/info/libcurl3:amd64.postinst
/var/lib/dpkg/info/libcurl3:amd64.shlibs
/var/lib/dpkg/info/python3-pycurl.postinst
/var/lib/dpkg/info/curl.list
/var/lib/dpkg/info/python3-pycurl.prerm
/var/lib/dpkg/info/libcurl3-gnutls:amd64.postinst
/var/lib/dpkg/info/libcurl3-gnutls:amd64.list
/opt/clion-1.2.4/bin/cmake/doc/cmake-3.3/cmcurl
/opt/clion-1.2.4/bin/gdb/lib/python2.7/macurl2path.py
/usr/lib/python2.7/macurl2path.py
/usr/lib/python3.5/macurl2path.py
/usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4
/usr/lib/x86_64-linux-gnu/libcurl.so.4
/usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.3
/usr/lib/x86_64-linux-gnu/libcurl.so.3
/usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4.3.0
/usr/lib/x86_64-linux-gnu/gstreamer-0.10/libgstcurl.so
/usr/lib/x86_64-linux-gnu/libcurl.so.4.3.0
/usr/lib/python3/dist-packages/pycurl.cpython-35m-x86_64-linux-gnu.so
/usr/lib/python3/dist-packages/curl
/usr/lib/python3/dist-packages/pycurl-7.19.5.1.egg-info
/usr/lib/python3/dist-packages/pycurl.cpython-34m-x86_64-linux-gnu.so
/usr/lib/python3.4/macurl2path.py
/usr/lib/gnupg/gpgkeys_curl
/usr/bin/curl
/usr/share/man/man1/curl.1.gz
/usr/share/lintian/overrides/libcurl3
/usr/share/lintian/overrides/libcurl3-gnutls
/usr/share/doc/libcurl3
/usr/share/doc/python3-pycurl
/usr/share/doc/libcurl3-gnutls
/usr/share/doc/curl
/usr/share/bash-completion/completions/curl

Answer 1

显然我需要安装curl以外的一些软件包。

 * libcurl4-gnutls-dev
 * libcurl4-nss-dev
 * libcurl4-openssl-dev

这些变量以其可以找到的模块here命名。 我的CMakeList.txt现在正在创建正确的make文件，如下所示：

cmake_minimum_required(VERSION 3.3)
project(RadekClientRecon)
find_package(OpenCV REQUIRED)
find_package(CURL REQUIRED)
link_directories(/usr/lib/)
link_directories(CURL_INCLUDE_DIRS)
set(SOURCE_FILES main.cpp HttpManager.cpp)
add_executable(RadekClientRecon ${SOURCE_FILES})
target_link_libraries(RadekClientRecon ${OpenCV_LIBS} ${CURL_LIBRARIES})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

Answer 2

在验证curl的安装后，这是我的CMakeLists.txt，它在ubuntu 17.10上运行良好

cmake_minimum_required(VERSION 2.8)

set(CURL_MIN_VERSION "7.55.1")

project(Downloader)

find_package(CURL REQUIRED)

link_directories(/usr/lib/x86_64-linux-gnu/)

add_executable(Downloader HTTPDownloaderExample.cpp HTTPDownloader.cpp)

target_link_libraries(Downloader curl)