On Tue, Jan 21, 2025 at 10:31:29AM -0500, Theodore Ts'o wrote: > A question about --as-needed as an upstream developer who wants to > care about more than just Debian or Linux. Am I correct in assuming > this will work on any system using GNU binutils? And it doesn't > matter whether you are using gcc, clang, etc. What about other OS's > such as *BSD, MacOS, etc.?
I often consult Gnulib for lore on this kind of thing. https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=blob;f=m4/lib-ignore.m4 seems to have some useful hints, with comments for those not fluent in m4. This also seems to be a standalone file, so if your project is using Autoconf but not Gnulib, then you should be able to copy it into your project's local macro directory, add gl_IGNORE_UNUSED_LIBRARIES to configure.ac, and add $(IGNORE_UNUSED_LIBRARIES_CFLAGS) etc. to whatever *_LDFLAGS variable is appropriate. -- Colin Watson (he/him) [cjwat...@debian.org]
