[Scons-users] grouping mutually dependent libraries when using GNU ld

[Eric Smith]

I've seen several methods described on the wiki and other web pages for 
how to pass the grouping options to GNU ld to deal with mutually 
dependent libraries, but I had trouble with some and disliked others, so 
I came up with my own.  In case this might be useful to anyone else, 
here's an excerpt from my SConscript:

env.Append (LIBS = ['lib1', 'lib2', 'lib3'])
# need to have grouping of libraries with --start-group, --end-group
env ['_LIBFLAGS'] = '--start-group ' + env ['_LIBFLAGS'] + ' --end-group'

This results in ALL of the libraries being grouped, which is usually 
more general than actually necessary, but I never did figure out any 
reliable way to group only a specific subset of the libraries.