Request to remove dependance on sed/flex/bison

[llvmbot]

Bugzilla Link	614
Resolution	FIXED
Resolved on	Feb 22, 2010 12:48
Version	trunk
OS	All
Reporter	LLVM Bugzilla Contributor
CC	@lattner

Extended Description

I posted this to the list, and also talked to you guys on irc, and was asked to
submit a feature request. Here is my original message:

---

At the moment, LLVM includes the .l, .y sources that are compiled by
flex and biston via make. This is fine for most unix developers. For
windows developers, it's a bit more of a pain to download flex/bison,
but is still a one-time thing.

However, anyone releasing an llvm frontend will require their users to
have flex/bison. Most (but not all) unix boxes have them, but almost
no windows boxes have them. This requires either

1. Forcing the user to dowload flex/bison (bad)

2. Distributing flex/bison with the front-end (not as bad, but a pain)

3. or, and this seems like a simple fix, just distribute the output of
   flex and bison along with the source. This is analagous to
   distributing "configure" along with "configure.ac".

---

The right solution is obviosly the 3'd one

[lattner]

FWIW, I totally agree. We just need someone to whip up a patch :)

[llvmbot]

Mine

[llvmbot]

A quick look at this indicates that it isn't completely trivial to save the
output of flex/bison in the sources. When OBJDIR != SRCDIR, flex gets confused
and code changes are required. This is going to take some monkeying around so
I'll have to wait until the weekend to resolve this.

Reid.

[llvmbot]

Implemented. Patches are here:

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050822/027982.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050822/027983.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050822/027984.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050822/027985.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050822/027986.html