[GRASS-user] g.extension gives an error when installing r.prominence

[Thayer Young]

When I try to install the r.prominence extension I get the following error:
g.extension.py -i extension=r.prominence svnurl=http://svn.osgeo.org/grass/grass-addons/grass6
WARNING: GRASS_ADDON_PATH has more items, using first defined - '/Users/thayer/Library/GRASS/6.4/Modules/bin'...ld: library not found for -lintlclang: error: linker command failed with exit code 1 (use -vto see invocation)...ERROR: Compilation failed, sorry. Please check above error messages.
Does anyone have any ideas?
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