Added the makefile variable ${COMMON_ADD} that will add flags
to all compile and link commands. The ${COMMON_ADD} flags are
appended to both ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}. This
facility is available to nearly all platforms except those with
very old make comamnds that do not understand the += operator.
Example on masOS (Darwin), one may invoke clang's -fsanitize
facility by:
make clobber all COMMON_ADD='-fsanitize=undefined -fsanitize=address'
Another example. To force C warnings to be treated as errors:
make COMMON_ADD='-Werror'
Some folks might think: “you still use RCS”?!? And we will say,
hey, at least we switched from SCCS to RCS back in … I think it was
around 1994 ... at least we are keeping up! :-) :-) :-)
Logs say that SCCS version 18 became RCS version 19 on 1994 March 18.
RCS served us well. But now it is time to move on. And so we are
switching to git.
Calc releases produce a lot of file changes. In the 125 releases
of calc since 1996, when I started managing calc releases, there
have been 15473 file mods!
calc GitHub philosophy
All of the previous commits in the master branch are the consists
of compressed source tarballs. The 125 git tags represent calc
releases from version 2.10.2t30 (Sat Jul 06 1996 04:17:00 GMT-0700)
to version 2.12.5.6 (Sun May 21 2017 15:03:29 GMT-0700).
At this point master branch will switch from those released tarballs
to the development tree. While we will make an effort to verify
that commits won't break calc: sometimes we will end up breaking
calc. You should consider the top of the master branch as potentially
unstable.
When we are ready to release calc, we will tag the commit with the
calc version and submit a release on GitHub. The GitHub release
will contain the usual RPMs, SRPMs, a release README and a released
source tarball.
