Need Help Understanding a Compile Error

[Marshall Lake <mlake mlake net>]

I need help in understanding a problem I'm encountering when compiling a
particular GTK program.

When compiling, at link time I get the following errors:

/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_map_cache_clear'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_map_get_type'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_map_create_context'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_map_shutdown'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_get_type'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_lock_face'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_has_char'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_get_glyph'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_get_unknown_glyph'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_get_raw_extents'
/usr/local/lib/libpangoxft-1.0.so: undefined reference to `pango_fc_font_unlock_face'

In this case /usr/local/lib/libpangoxft-1.0.so is linked to
/usr/local/lib/libpangoxft-1.0.so.0.501.0.  If I change libpangoxft-1.0.so
to be linked to /usr/local/lib/libpangoxft-1.0.so.0.200.5 the program
compiles correctly.

Can someone tell me why?

-- 
Marshall Lake -- mlake mlake net -- http://mlake.net