[Boost-build] cygwin and recent gcc builds

Subject: [Boost-build] cygwin and recent gcc builds
From: Eric Niebler (eric_at_[hidden])
Date: 2012-04-09 18:18:42

I've been building and using gcc with cygwin for a while, and then
patching them into boost.build using my user-config.jam. At some point
in the past what I was doing stopped working. Things build fine, but the
resulting exe doesn't run (e.g, when I bjam in a test directory).

First, I get an error about cyggcc_s-sjlj-1.dll not being in the path,
even though it's in the same directory as the g++.exe executable. My
user-config.jam has this:

using gcc : 4.7 : /usr/local/gcc-4.7/bin/g++.exe ;

I'm pretty sure this used to be sufficient for BBv2, but maybe I need to
change this so that /usr/local/gcc-4.7/bin gets added to the path
automatically?

If I add /usr/local/gcc-4.7/bin to my path manually, I get a different
problem:

testing.capture-output
../../../bin.v2/libs/proto/test/calculator.test/gcc-0x/debug/link-static/calculator.run
/bin/sh: line 2:  3032 Segmentation fault      (core dumped)
"../../../bin.v2/libs/proto/test/calculator.test/gcc-0x/debug/link-static/calculator.exe"
>
"../../../bin.v2/libs/proto/test/calculator.test/gcc-0x/debug/link-static/calculator.output"
2>&1

Clearly, it's picking up a bad dll somewhere, but I don't know which or
how to debug this. Note: if I run with link=static runtime-link=static,
the problem goes away, so that's what I usually do.

Has anybody encountered these problems? Have I got things wrong in my
user-config.jam? TIA,

-- 
Eric Niebler
BoostPro Computing
http://www.boostpro.com