extra flags for linker on GNU

[Robert Millan]

hi,

I've been observating that linking objects against a library on
GNU requires more linker flags than on other platforms. the
extra flags correspond to the dependencies of the library you're
linking against, and so recursively.

so, for example, supose we have library "libfoo" and program "bar".
libfoo is written in C++ and depends on libstdc++, but bar is
pure C and doesn't need libstdc++ directly.

well, on GNU/Linux linking bar against libfoo won't need -lstdc++,
but this flag is a must on GNU. is that the expected behaviour?

you can see examples in lots of places, like in
xfree86/programs/glxinfo C++ linking mess, or debian bug 186760 [1]

are we suposed to add the extra flags or is there a bug that needs
fixing?

[1] http://bugs.debian.org/186760

-- 
Robert Millan

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