On Thu, 10 Dec 2015, Daniel Kahn Gillmor wrote: > Specifically, if the first character of the "old" argument is a > literal $, then gcc will treat it as an environment variable name, and > use the value of the env var for prefix mapping.
I don't think a literal $ in option arguments is a good idea; it's far too hard to pass through a sequence of shells and makefiles that you typically get in recursive make. You end up with things like '-Wl,-rpath,'\''\\\$$\$$\\\$$\$$ORIGIN'\''/../' (part of a process for using $ORIGIN when linking GDB) if you try. -- Joseph S. Myers jos...@codesourcery.com
