building on cygwin

[Kelly O'Hair]

On Sep 28, 2012, at 9:17 AM, Jim Holmlund wrote:

> 
> The new build didn't work on my cygwin PC.
> My cygwin is old. Erik said he could build ok under cygwin.  Kelly said to try a new cygwin which I am loathe to do.

You need to update your cygwin.

> 
> I think I tracked the problem down to this code in IdlCompilation.gmk:
>> # Now create the dependencies for each idl target.
>> $$(foreach p,$$($1),$$(eval $$(call add_idl_package,$1,$$($1_SRC),$$($1_BIN),$$(patsubst $$($1_BIN)/%.idl.d,$$($1_SRC)/%.idl,$$p),$$p,$$($1_DELETES),$$($1_OLDIMPLBASES),$$($1_IDLJ))))
> Tracing code I added shows that this foreach never calls add_idl_pacakge.
> BTW, what is a good way to debug/trace something like that $$(foreach...?
> 
> Here is my uname -a output:
>   CYGWIN_NT-5.1 fff 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin

Too old!

My recommendation is to put a check into our configure script to require a newer version of cygwin and disallow 1.5.
This old 1.5 version has all kinds of problems, and granted newer sometimes means newer unknown issues,
in general the 1.7 release is a significantly better product.

-kto

> 
> The make I am using is in /usr/bin, and make -v reports that it is
>   GNU Make 3.82
>   Built for i686-pc-cygwin
> 
> The make I am using on solaris is 3.81 and it works ok.  So, I tried a build on windows using 3.81 and the above problem went away.
> 
> Thanks
> - jjh
>