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From: Daniel Villeneuve <dvilleneuve AT kronos DOT com>
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Date: Fri, 24 Aug 2007 15:32:03 -0400
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Subject: re: cross-compilation linux->cygwin and gcc-3.4.4
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Earlier this week, I've asked:
 > I'm in the process of updating my cross-compilation
 > environment from cygwin-1.5.12 to cygwin-1.5.24, mainly
 > because we have had code generation problems with
 > gcc-3.3.3-3 from the former.
 > 
 > However, I get the following message
 > 
 >     No support for this host/target combination
 > 
 > from gcc-3.4.4/libstdc++-v3/configure (crossconfig.m4), because
 > indeed cygwin is not mentioned in any of the clauses of the main
 > case statement.

I've finally found a way to get a working linux->cygwin
cross-compiler.  Here are the steps I've followed, for the
record:
1) As I've seen in other mails, I've deleted the
   libstdc++-v3 directory from the gcc-g++ source distro.
2) I've downloaded the binary native distro for gcc-core,
   to find the exact configure options used (using the
   strings program on gcc.exe).
3) I've compiled/installed my gcc-g++ cross-compiler sans
   libstdc++-v3 using this configuration (especially,
   --enable-sjlj-exceptions).
4) I've downloaded the binary native distro for gcc-g++, in
   order to cp -r /usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++
   into $INSTALL/lib/gcc/i686-pc-cygwin/3.4.4/include,
   to cp /usr/lib/gcc/i686-pc-cygwin/3.4.4/include/lib{std,sup}c++.{a,la}
   into $INSTALL/i686-pc-cygwin/lib and to edit the .la
   files to refer to my $INSTALL directory (for -L options
   in dependencies and the libdir value).

-- 
Daniel Villeneuve
Architecte en logiciel, RO, division AD OPT
Software Architect, OR, AD OPT Division
Kronos
T: 514.345.0580 x 241
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