On 10/22/2012 8:53 PM, Chris Glover wrote:
On Mon, Oct 22, 2012 at 3:07 PM, Eric Niebler <eric@boostpro.com> wrote:
I build clang from source on cygwin and use that. I like to track their upstream closely since they quickly fix the bugs I report. My user-config.jam has this:
using clang : : /usr/local/bin/clang++ : <compileflags>-std=gnu++11 ;
Then I run bjam from bash. Works ok, but clang has a long-ish startup time under cygwin. Several seconds per TU.
Have you tried building a statically linked version? I had this problem not under cygwin but under MSys - building a statically linked clang fixed it.
Following up on this. I don't know what changed recently, but the performance of my clang under cygwin has improved dramatically. I have updated cygwin and rebuilt clang from scratch. I didn't do anything specifically to switch to a statically linked cygwin. I haven't investigated. Guess: perhaps the cygwin upgrade caused a rebaseall? Happy camper, -- Eric Niebler BoostPro Computing http://www.boostpro.com