On Sun, Jul 10, 2016 at 10:28 AM, Rob Landley <[email protected]> wrote: > On 07/08/2016 08:26 PM, Andy Chu wrote: >> On Fri, Jul 8, 2016 at 6:01 PM, Ed Maste <[email protected]> wrote: >>> https://svnweb.freebsd.org/base/head/sys/tools/sound/feeder_rate_mkfilter.awk?view=markup >> >> WOW. OK that's a creative use of awk. It's still a C code generator, >> but it's doing lots of floating point math to create audio filters. >> 899 lines. >> >> Where exactly is this used? Is it just a random user space tool or >> actually fundamental to BSD in some way? > > Awk's better than bc. > > A few years back Peter Anvin added perl as a build dependency to every > package he maintained (linux, syslinux, klibc, etc), at the same time. > I'm not sure exactly what agenda he was pushing, but there was a > definite theme. When I complained about the damage to the kernel and > submitted perl removal patches rewriting them in shell and C, he called > my objection to builds growing gratuitous new dependencies "academic": > > http://lkml.iu.edu/hypermail/linux/kernel/0802.1/4400.html > > Years later when I got serious about pushing the perl removal patches > upstream, I.E. not just periodically posting updated versions (which I > did for something like 5 years) but actually responding to people > explaining WHY they should go upstream: > > http://lkml.iu.edu/hypermail/linux/kernel/1302.3/01520.html > http://lkml.iu.edu/hypermail/linux/kernel/1302.3/02061.html > > Peter replaced timeconst.pl with timeconst.bc, which blocked my C > rewrite by porting it to a language that busybox didn't support and > which _correctly_ implementing would require an arbitrary precision math > library. (Which is why I started looking at the public domain libtommath > fork in dropbear, which I found utterly unintelligible.)
another plug for supporting a libcrypto dependency: the *sum utilities are orders of magnitude faster with libcrypto, the SSL support in things like netcat/wget would be something i could actually use on Android (there's no way i'll be able to ship an alternative SSL implementation) and you'd get arbitrary precision integers too. i don't think you're likely to go this route, but i do like to keep bringing it up so the idea of being API-compatible enough that it's possible to use toybox with either your backend or *ssl is in the back of your mind... (no one's complained about the slow *sum commands yet, but if you're interested i'm happy to send a patch.) > And of course > Peter didn't post it to the list, but instead checked it straight in and > sent it to Linus in a pull request. > > His bc version did successfully block my C rewrite of the same code and > keep my "academic" simple "build the kernel with busybox" from going up > into the mainstream, so I still have to maintain a patch out of tree to > do that: > > https://github.com/landley/aboriginal/blob/master/sources/patches/linux-noperl-timeconst.patch > > If he'd ported it to awk, busybox could have handled it. Which as far as > I can tell is why he _didn't_. > > Rob > _______________________________________________ > Toybox mailing list > [email protected] > http://lists.landley.net/listinfo.cgi/toybox-landley.net -- Elliott Hughes - http://who/enh - http://jessies.org/~enh/ Android native code/tools questions? Mail me/drop by/add me as a reviewer. _______________________________________________ Toybox mailing list [email protected] http://lists.landley.net/listinfo.cgi/toybox-landley.net
