Ubuntu Linux 15.10 64 bit.

Michael Ritter rob.n.val at hotmail.com
Tue Feb 14 03:09:14 UTC 2017

To all,

Does anyone know how to compile C++ code and link in the X11 library?

I'm using :

 g++ -Wall -L/usr/X11/lib -lX11 -m64 --std=c++11 -o prog1 xlib1.cpp

and I get

/tmp/ccVNWGzR.o: In function `main':
xlib1.cpp:(.text+0xe): undefined reference to `XOpenDisplay'
xlib1.cpp:(.text+0x6d): undefined reference to `XCreateWindow'
xlib1.cpp:(.text+0x88): undefined reference to `XMapWindow'
xlib1.cpp:(.text+0x94): undefined reference to `XFlush'
collect2: error: ld returned 1 exit status

in my very small C++ program.


Mike Ritter

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