Given a C++ program that uses GNU autotools, what's the easiest way to compile it with -flto (link time optimization)? My understanding is that it is customary on Unix for such optimization flags to be specified by the user or packager, not by the programmer.
Using -flto with autotools
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According to this post, the
-fltoflag needs to be passed as a compilation flag and as a linker flag, so:or possibly:
might work.