Caius Theory

Now with even more cowbell…

TweetSavr

I've had a dream for a while. A simple webapp that takes the last tweet in a conversation and outputs that conversation in chronological order on a page you can link to forevermore. Occasionally I'll google to see if anything new's turned up, but they all seem to do far more, require the start and end tweets or are covered in ads.

So one friday evening I just built it. It's called TweetSavr. It's very simpleā€”to the point the error page is just a standard 500 server error page currently. It fetches, caches and displays a conversation, given just the last tweet in said conversation.

KISS extends to the interface as well, I'm quite a fan of URL hacking to use webapps, so TweetSavr works on that basis as well. The homepage sort of has some help telling you how to use it, but you basically take the (old-twitter) URL of the last tweet and paste it after tweetsavr.com in the address bar. Eg, http://tweetsavr.com/http://twitter.com/ElizabethN/status/19766711653765120. It'll then redirect you through to the actual page for that conversation. You can also put just the status id on the end of the URL, http://tweetsavr.com/19766711653765120 and hey presto, it loads.

The caching layer is moderately rudimentary, after fetching a tweet that isn't in the cache it writes out a hash of data for that tweet into a yaml file. And when looking up a tweet it checks to see if that file exists, reading it in from disk if it is. Bonus side-effect is it builds up a corpus of tweets as yaml files on disk.

It lives on the internet at http://tweetsavr.com/ and the source is on github at http://github.com/caius/tweetsavr

Side note: isn't it wonderful what we can create given just a few hours, a server somewhere in the cloud, and an idea? Never ceases to amaze me what can be built in just a short amount of time, even the dead simple things.

Install GCC-4.2.1 (Apple build 5666.3) with Xcode 4.2

As of Xcode 4.2 Apple have stopped bundling GCC with it, shipping only the (mostly) compatible llvm-gcc binary instead. The suggested fix is to install GCC using the osx-gcc-installer project. However, I wanted to build and install it from source, which apple provides at http://opensource.apple.com/.

You should already have installed Xcode 4.2 from the app store, then basically the following steps are to grab the tarball from the 4.1 developer tools source, unpack & compile it, then install it into the right places.

Update 2016-07-03: I'd suggest just using homebrew to install this these days:

brew install homebrew/dupes/apple-gcc42

Instructions

# Grab and unpack the tarball
mkdir ~/tmp && cd ~/tmp
curl -O http://opensource.apple.com/tarballs/gcc/gcc-5666.3.tar.gz
tar zxf gcc-5666.3.tar.gz
cd gcc-5666.3

# Setup some stuff it requires
mkdir -p build/obj build/dst build/sym
# And then build it. You should go make a cup of tea or five whilst this runs.
gnumake install RC_OS=macos RC_ARCHS='i386 x86_64' TARGETS='i386 x86_64' \
  SRCROOT=`pwd` OBJROOT=`pwd`/build/obj DSTROOT=`pwd`/build/dst \
  SYMROOT=`pwd`/build/sym

# And finally install it
sudo ditto build/dst /

And now you should have gcc-4.2 in your $PATH, available to build all the things that llvm-gcc fails to compile.