ld: library not found for -IX11 ? [SOLVED]
lazarus / 33-macOS - Mac OS X

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dieselnutjob · 2014-08-16 12:04

Can anyone tell me how to fix "ld: library not found for -IX11" when
compiling an X11 app for Mac OSX please?

thanks

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kamischi · 2014-08-16 13:01

probably, libX11.dylib is search for in /usr/lib or /usr/X11/lib, but
it might be in /opt/X11/lib. Adding "-Fl/opt/X11/lib" as an option for
fpc might resolve it. But check, whether X11 is installed on your
system.

MiSchi

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dieselnutjob · 2014-08-16 13:23

thank you your solution worked.

To flesh it out a bit:-

In Lazarus go to
Project
Project Options
on the left select Compiler Options then sub item Paths
in Libraries add /usr/X11/lib/

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kamischi · 2014-08-16 16:18

Did you install lazarus from disk images or from fink?

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dieselnutjob · 2014-08-16 16:45

from here

http://sourceforge.net/projects/lazarus/files/Lazarus%20Mac%20OS%20X%2
0i386/Lazarus%201.2.4/

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kamischi · 2014-08-16 20:55

ok. So, this is probably another point favoring installing through
fink. I have put that into the fpc.cfg file since quite some time and
it should work out of the box. Good to know, in case i get questioned
once again, what the fink packages are good for.

MiSchi

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Graeme · 2014-08-16 23:33

Quote from: dieselnutjob on August 16, 2014, 02:04:55 pmCan anyone
tell me how to fix "ld: library not found for -IX11" when compiling an
X11 app for Mac OSX please?
If it was a fpGUI based application that you tried to compile (I think
you sent me a personal message about this), add -Fl/usr/X11/lib to
your fpc.cfg file - it will then be fixed for all future projects too.
The <fpgui>/docs/INSTALL.TXT explains how to compile and run such apps
under OSX.