gcc can't find -lX11

Question

I've used linuxbrew to install gcc 5.3 on a machine on which I don't have sudo access. I now want to link with X11:

> gcc test.c -lX11
ld: cannot find -lX11

I've checked that libX11.so exists in /usr/lib64/ which is on the compiler's LIBRARY_PATH. If I use the system's gcc it works fine, but I need a newer version to compile my actual program.

score 1 · Answer 1 · answered May 03 '16 at 01:34

1

use -L flag, like this -L/usr/lib64, or you can specify full path to library like this gcc test.c /usr/lib64/libX11.so

answered May 03 '16 at 01:34

fghj

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So `gcc test.c /usr/lib64/libX11.so` works, but `gcc test.c -L/usr/lib64 -lX11` does not. – Vlad Firoiu May 03 '16 at 05:03

score 0 · Accepted Answer · answered May 03 '16 at 07:56

0

According to this comment by a linuxbrew developer,

linuxbrewed gcc removes /usr/lib64 from the library path because mixing system libraries with brewed libraries creates havoc.

The solution is to brew install linuxbrew/xorg/xorg.

answered May 03 '16 at 07:56

Vlad Firoiu

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gcc can't find -lX11

2 Answers2