than ".so". The old extension conflicted with well-established
naming conventions for dynamically loadable modules.
The "clean" targets continue to remove ".so" files too, to deal with
old systems.
shared versions should not need to add -lm unless the program uses libm
itself. Strictly speaking, libg++ depends on libstdc++, but libstdc++
has dynamic dependencies on some exception tables and binutils doesn't
seem to like it when a secondary library has undefined references. It
doesn't seem to care when -lstdc++ is added on the command line to ld
though. Anyway, the c++ driver adds -lstdc++ explicitly, so that should
be OK. c++ also adds -lm explicitly too, even though it wouldn't need
to now. [except for statically linked binaries as .a files don't have an
equivalent of automatic internal shared object dependencies.]
fix of putting generated source files in SRCS breaks many special
cases (many dependencies had to be incomplete for ${.ALLSRC}
not to give .h files that would break compiling with c++ -c).
Reduce these special cases to the general case so that SRCS works
normally and bsd.lib.mk handles most of the complications. Now
we only have to duplicate rules from bsd.lib.mk to add special
CFLAGS in some cases.
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.
Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.
This closes PR#1975 and was on my TODO list, so I'm breaking my own "no more
commits before I fly!" rule and taking care of this, since it was at the
very top and Peter shamed me in to taking care of it. This is definitely
a 2.2 candidate.
Submitted-By: Mark Diekhans <markd@Grizzly.COM>
