Getting Linker errors in Xcode project.

[barnaclau]

When I try to compile the Xcode project I get three linker errors:

clang: error: no such file or directory: '/opt/local/lib/libX11.dylib'
clang: error: no such file or directory: '/opt/local/lib/libXext.dylib'
clang: error: no such file or directory: '/opt/local/lib/libXrandr.dylib'

I couldn't find any documentation indicating any additional installs required to run the project.

I'm trying to compile the included Xcode project under the 1.0.0 release over here: https://github.com/google/liquidfun/releases

I'm running Mac OS X Version 10.9.2, Xcode Version 5.0.2. Additionally, I do have the latest XQuartz (X11) installed.

As a note, running the Xcode generated through Cmake does work.

[jsanmiya]

Hi,

I have those files in /usr/X11/lib. Perhaps you can check that they are there, and that that directory is on your search path?

[m4b]

I received the same linking errors in the premade xcode project. In short, resolved the issue by changing the bad /opt/local/lib references in each place in the xcode project to /opt/X11/lib. Perhaps earlier versions of Xquartz installed to /opt/local/lib? I don't know. I installed the latest version, 2.7.7: http://xquartz.macosforge.org/landing/

If you ls -al /usr/X11 you should see that it symlinks to /opt/X11:

lrwxr-xr-x  1 root  wheel  8 Nov  4 16:55 /usr/X11 -> /opt/X11

As a result, I had to change the linking flags for freeglut, et. al, from /opt/local/lib to /opt/X11/lib.

(/opt/local/lib actually makes no sense, lib should be prefixed with a library directory, i.e., X11, or whatever the library is, and not local, in the first place). I've attached a photo of the linking flags that need to change. I'm not sure how you're generating your xcode project, otherwise I would have made a pull request with the changes.

[mlaico]

I got it to build very easily by generating the Xcode project

cd liquidfun/Box2D
cmake -G "Xcode"

But, I had to add

find_package (Threads)

to CMakeLists.txt, after the line

project(Box2D)