#19 librsync doesn't export functions defined inline with clang
Hi,
when compiled with clang, which defaults to compiling C99, the inline keyword is interpreted different from what GCC does (which by default compiles GNU89). This leads to a librsync library where the functions declared inline from delta.c are unresolved symbols, breaking software which links against this library.
See http://clang.llvm.org/compatibility.html#inline for a description of this problem. We have fixed this downstream at MacPorts by dropping the inline keyword when compiling with clang. For reference see https://trac.macports.org/ticket/31742, and the patch we apply https://trac.macports.org/browser/trunk/dports/net/librsync/files/patch-delta.c.diff (raw download at the bottom of the page).
One could probably #ifdef this for clang only, but since somebody already stated that removing the inline functions might be a better idea than adding a special case to autoconfigure.ac in #1466496, I'd suggest to apply the patch linked.