rpath fix in graphics/glfw

["Aleksej Lebedev" <root%zta.lk@localhost>]

Hi, everyone!

I recently added tracy  (https://bitbucket.org/wolfpld/tracy) to pkgsrc-wip. It compiles OK on Linux and on Mac. However, when executed on Mac it fails to load libglfw.3.dylib (part of graphics/glfw) due to an incorrect rpath in glfw.

I fixed it by removing a mac-specific trick in glfw. Honestly I don't understand what the trick was originally for, but it breaks liking against libgsfw.dylib. The patch is the following:

a@zhtw-pc:~/pkgsrc$ cat graphics/glfw/patches/patch-src_CMakeLists.txt 
$NetBSD$

- TOMTOM: Fixes linking on OSX

--- src/CMakeLists.txt.orig	2016-08-18 11:32:27.000000000 +0000
+++ src/CMakeLists.txt
@@ -96,9 +96,6 @@ if (BUILD_SHARED_LIBS)
     elseif (APPLE)
         # Add -fno-common to work around a bug in Apple's GCC
         target_compile_options(glfw PRIVATE "-fno-common")
-
-        set_target_properties(glfw PROPERTIES
-                              INSTALL_NAME_DIR "lib${LIB_SUFFIX}")
     elseif (UNIX)
         # Hide symbols not explicitly tagged for export from the shared library
         target_compile_options(glfw PRIVATE "-fvisibility=hidden")

Without this patch otool -L libglfw.3.dylib used to report "lib/libglfw.3.dylib" instead of "/Users/a/pkg/lib/libglfw.3.dylib" (my PREFIX is /User/a/pkg).

We are using our own pkgsrc branch where we commit our TomTom-specific fixes (I work for TomTom).
But we would be happy to deviate from mainstream as little as possible. Please consider adding the patch.
Thanks.

--
Aleksej Lebedev