如何将glfw构建为共享库？

Question

我试图在Linux上构建glfw库作为共享库。我已经开始克隆git repository。然后，根据this编译指南，我在回购中创建了一个名为glfw-build的文件夹，并在其中创建了cd＆＃39}。 Runnnig cmake ..从那里得到输出

-- The C compiler identification is GNU 4.8.4
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Looking for include file pthread.h
-- Looking for include file pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Could NOT find Doxygen (missing:  DOXYGEN_EXECUTABLE) 
-- Using X11 for window creation
-- Using GLX for context creation
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found X11: /usr/lib/x86_64-linux-gnu/libX11.so
-- Configuring done
-- Generating done
-- Build files have been written to: /home/<user>/lib-sources/glfw/glfw-build

在此之后运行make

Scanning dependencies of target glfw
[  1%] Building C object src/CMakeFiles/glfw.dir/context.c.o
[  2%] Building C object src/CMakeFiles/glfw.dir/init.c.o
[  4%] Building C object src/CMakeFiles/glfw.dir/input.c.o
[  5%] Building C object src/CMakeFiles/glfw.dir/monitor.c.o
[  7%] Building C object src/CMakeFiles/glfw.dir/window.c.o
[  8%] Building C object src/CMakeFiles/glfw.dir/x11_init.c.o
[  9%] Building C object src/CMakeFiles/glfw.dir/x11_monitor.c.o
[ 11%] Building C object src/CMakeFiles/glfw.dir/x11_window.c.o
[ 12%] Building C object src/CMakeFiles/glfw.dir/xkb_unicode.c.o
[ 14%] Building C object src/CMakeFiles/glfw.dir/linux_joystick.c.o
[ 15%] Building C object src/CMakeFiles/glfw.dir/posix_time.c.o
[ 16%] Building C object src/CMakeFiles/glfw.dir/posix_tls.c.o
[ 18%] Building C object src/CMakeFiles/glfw.dir/glx_context.c.o
Linking C static library libglfw3.a
[ 18%] Built target glfw
Scanning dependencies of target boing
[ 19%] Building C object examples/CMakeFiles/boing.dir/boing.c.o
[ 21%] Building C object examples/CMakeFiles/boing.dir/__/deps/glad.c.o
Linking C executable boing
[ 21%] Built target boing
Scanning dependencies of target gears
[ 22%] Building C object examples/CMakeFiles/gears.dir/gears.c.o
[ 23%] Building C object examples/CMakeFiles/gears.dir/__/deps/glad.c.o
Linking C executable gears
[ 23%] Built target gears
Scanning dependencies of target heightmap
[ 25%] Building C object examples/CMakeFiles/heightmap.dir/heightmap.c.o
[ 26%] Building C object examples/CMakeFiles/heightmap.dir/__/deps/glad.c.o
Linking C executable heightmap
[ 26%] Built target heightmap
Scanning dependencies of target particles
[ 28%] Building C object examples/CMakeFiles/particles.dir/particles.c.o
[ 29%] Building C object examples/CMakeFiles/particles.dir/__/deps/tinycthread.c.o
[ 30%] Building C object examples/CMakeFiles/particles.dir/__/deps/getopt.c.o
[ 32%] Building C object examples/CMakeFiles/particles.dir/__/deps/glad.c.o
Linking C executable particles
[ 32%] Built target particles
Scanning dependencies of target simple
[ 33%] Building C object examples/CMakeFiles/simple.dir/simple.c.o
[ 35%] Building C object examples/CMakeFiles/simple.dir/__/deps/glad.c.o
Linking C executable simple
[ 35%] Built target simple
Scanning dependencies of target splitview
[ 36%] Building C object examples/CMakeFiles/splitview.dir/splitview.c.o
[ 38%] Building C object examples/CMakeFiles/splitview.dir/__/deps/glad.c.o
Linking C executable splitview
[ 38%] Built target splitview
Scanning dependencies of target wave
[ 39%] Building C object examples/CMakeFiles/wave.dir/wave.c.o
[ 40%] Building C object examples/CMakeFiles/wave.dir/__/deps/glad.c.o
Linking C executable wave
[ 40%] Built target wave
Scanning dependencies of target clipboard
[ 42%] Building C object tests/CMakeFiles/clipboard.dir/clipboard.c.o
[ 43%] Building C object tests/CMakeFiles/clipboard.dir/__/deps/getopt.c.o
[ 45%] Building C object tests/CMakeFiles/clipboard.dir/__/deps/glad.c.o
Linking C executable clipboard
[ 45%] Built target clipboard
Scanning dependencies of target cursor
[ 46%] Building C object tests/CMakeFiles/cursor.dir/cursor.c.o
[ 47%] Building C object tests/CMakeFiles/cursor.dir/__/deps/glad.c.o
Linking C executable cursor
[ 47%] Built target cursor
Scanning dependencies of target empty
[ 49%] Building C object tests/CMakeFiles/empty.dir/empty.c.o
[ 50%] Building C object tests/CMakeFiles/empty.dir/__/deps/tinycthread.c.o
[ 52%] Building C object tests/CMakeFiles/empty.dir/__/deps/glad.c.o
Linking C executable empty
[ 52%] Built target empty
Scanning dependencies of target events
[ 53%] Building C object tests/CMakeFiles/events.dir/events.c.o
[ 54%] Building C object tests/CMakeFiles/events.dir/__/deps/getopt.c.o
[ 56%] Building C object tests/CMakeFiles/events.dir/__/deps/glad.c.o
Linking C executable events
[ 56%] Built target events
Scanning dependencies of target gamma
[ 57%] Building C object tests/CMakeFiles/gamma.dir/gamma.c.o
[ 59%] Building C object tests/CMakeFiles/gamma.dir/__/deps/getopt.c.o
[ 60%] Building C object tests/CMakeFiles/gamma.dir/__/deps/glad.c.o
Linking C executable gamma
[ 60%] Built target gamma
Scanning dependencies of target glfwinfo
[ 61%] Building C object tests/CMakeFiles/glfwinfo.dir/glfwinfo.c.o
[ 63%] Building C object tests/CMakeFiles/glfwinfo.dir/__/deps/getopt.c.o
[ 64%] Building C object tests/CMakeFiles/glfwinfo.dir/__/deps/glad.c.o
Linking C executable glfwinfo
[ 64%] Built target glfwinfo
Scanning dependencies of target iconify
[ 66%] Building C object tests/CMakeFiles/iconify.dir/iconify.c.o
[ 67%] Building C object tests/CMakeFiles/iconify.dir/__/deps/getopt.c.o
[ 69%] Building C object tests/CMakeFiles/iconify.dir/__/deps/glad.c.o
Linking C executable iconify
[ 69%] Built target iconify
Scanning dependencies of target joysticks
[ 70%] Building C object tests/CMakeFiles/joysticks.dir/joysticks.c.o
[ 71%] Building C object tests/CMakeFiles/joysticks.dir/__/deps/glad.c.o
Linking C executable joysticks
[ 71%] Built target joysticks
Scanning dependencies of target monitors
[ 73%] Building C object tests/CMakeFiles/monitors.dir/monitors.c.o
[ 74%] Building C object tests/CMakeFiles/monitors.dir/__/deps/getopt.c.o
[ 76%] Building C object tests/CMakeFiles/monitors.dir/__/deps/glad.c.o
Linking C executable monitors
[ 76%] Built target monitors
Scanning dependencies of target msaa
[ 77%] Building C object tests/CMakeFiles/msaa.dir/msaa.c.o
[ 78%] Building C object tests/CMakeFiles/msaa.dir/__/deps/getopt.c.o
[ 80%] Building C object tests/CMakeFiles/msaa.dir/__/deps/glad.c.o
Linking C executable msaa
[ 80%] Built target msaa
Scanning dependencies of target reopen
[ 81%] Building C object tests/CMakeFiles/reopen.dir/reopen.c.o
[ 83%] Building C object tests/CMakeFiles/reopen.dir/__/deps/glad.c.o
Linking C executable reopen
[ 83%] Built target reopen
Scanning dependencies of target sharing
[ 84%] Building C object tests/CMakeFiles/sharing.dir/sharing.c.o
[ 85%] Building C object tests/CMakeFiles/sharing.dir/__/deps/glad.c.o
Linking C executable sharing
[ 85%] Built target sharing
Scanning dependencies of target tearing
[ 87%] Building C object tests/CMakeFiles/tearing.dir/tearing.c.o
[ 88%] Building C object tests/CMakeFiles/tearing.dir/__/deps/getopt.c.o
[ 90%] Building C object tests/CMakeFiles/tearing.dir/__/deps/glad.c.o
Linking C executable tearing
[ 90%] Built target tearing
Scanning dependencies of target threads
[ 91%] Building C object tests/CMakeFiles/threads.dir/threads.c.o
[ 92%] Building C object tests/CMakeFiles/threads.dir/__/deps/tinycthread.c.o
[ 94%] Building C object tests/CMakeFiles/threads.dir/__/deps/glad.c.o
Linking C executable threads
[ 94%] Built target threads
Scanning dependencies of target title
[ 95%] Building C object tests/CMakeFiles/title.dir/title.c.o
[ 97%] Building C object tests/CMakeFiles/title.dir/__/deps/glad.c.o
Linking C executable title
[ 97%] Built target title
Scanning dependencies of target windows
[ 98%] Building C object tests/CMakeFiles/windows.dir/windows.c.o
[100%] Building C object tests/CMakeFiles/windows.dir/__/deps/glad.c.o
Linking C executable windows
[100%] Built target windows

然后直接运行sudo make install给出

[ 18%] Built target glfw
[ 21%] Built target boing
[ 23%] Built target gears
[ 26%] Built target heightmap
[ 32%] Built target particles
[ 35%] Built target simple
[ 38%] Built target splitview
[ 40%] Built target wave
[ 45%] Built target clipboard
[ 47%] Built target cursor
[ 52%] Built target empty
[ 56%] Built target events
[ 60%] Built target gamma
[ 64%] Built target glfwinfo
[ 69%] Built target iconify
[ 71%] Built target joysticks
[ 76%] Built target monitors
[ 80%] Built target msaa
[ 83%] Built target reopen
[ 85%] Built target sharing
[ 90%] Built target tearing
[ 94%] Built target threads
[ 97%] Built target title
[100%] Built target windows
Install the project...
-- Install configuration: ""
-- Installing: /usr/local/include/GLFW
-- Installing: /usr/local/include/GLFW/glfw3.h
-- Installing: /usr/local/include/GLFW/glfw3native.h
-- Installing: /usr/local/lib/cmake/glfw/glfw3Config.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfw3ConfigVersion.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfwTargets.cmake
-- Installing: /usr/local/lib/cmake/glfw/glfwTargets-noconfig.cmake
-- Installing: /usr/local/lib/pkgconfig/glfw3.pc
-- Installing: /usr/local/lib/libglfw3.a

我似乎得到的只是一个文件，即一个静态库，但如上所述，我需要一个共享库，即一个so文件。

为什么我没有得到这样的档案;不应该是默认的吗？我怎么能得到它？

Answer 1

某些项目（其中glfw3）隐式允许用户通过BUILD_SHARED_LIBS变量影响他们生成的库的类型：

  

如果存在且为true，这将导致所有库都被共享构建，除非将库显式添加为静态库。此变量通常作为OPTION添加到项目中，以便项目的每个用户可以决定是否要使用共享库或静态库来构建项目。

使用

进行配置

cmake -DBUILD_SHARED_LIBS=ON ..

告诉项目生成共享库。

请注意，如果您希望系统中存在这两种类型的库，则需要为它们分配不同的安装前缀（CMAKE_INSTALL_PREFIX变量）。

并非所有项目都允许这样的调整。有些项目会自行选择构建类型。其他一些人为此目的使用另一个变量。只需阅读项目的README或检查其代码。