Cygwin build error

[Jeff Johnston]

Corinna Vinschen wrote:
> This is a newlib problem.  I've redirected this mail to the appropriate
> list newlib AT sourceware DOT org.
> 
> On Apr 27 15:14, Ernie Coskrey wrote:
> 
>>I ran into the following problem building the latest cygwin snapshot:
>>
>>configure: loading cache .././config.cache
>>configure: error: `CFLAGS' has changed since the previous run:
>>configure:   former value:  -O2 -g -O2  
>>configure:   current value: -O2 -g -O2 
>>configure: error: changes in the environment can compromise the build
>>configure: error: run `make distclean' and/or `rm .././config.cache' and start over
>>configure: error: /bin/sh '../../../../src/newlib/libc/configure' failed for libc
>>
>>By piping the output to a file, I saw that the former value of CFLAGS is "-O2 -g -O2  " (two spaces), while the current value is "-O2 -g -O2 " (one space).  This causes the comparison in libc/configure to fail.
>>
>>The way I've resolved this is to replace the following line:
>>
>>      if test "x$ac_old_val" != "x$ac_new_val"; then
>>
>>with
>>
>>      if test "`echo $ac_old_val`" != "`echo $ac_new_val`"; then
>>
>>wherever it appears in any "configure" script (there are 75 configure scripts that contain this test, BTW).  There may be a more elegant way around this, but I haven't found it.  Running "make distclean" or removing config.cache doesn't resolve the problem.
>>
>>-----
>>Ernie Coskrey       SteelEye Technology, Inc.    803-461-3875
> 
> 
> 
> Corinna
> 

Corinna,

   Please elaborate.  Shaun's problem occurs on Debian and does not 
occur on Fedora Core.  He is also dealing with multilib.  While it may 
be the same problem, I would like to isolate this one.

   Both you and Chris confirmed that the new configuration built fine. 
How do your successful builds differ from that of Ernie above?

-- Jeff J.