Re: Succes using crosstool on Mac OS X

[Martin Schaffner <schaffner at gmx dot li>]

Dave wrote:
> Martin> Finally, when crosstool wants to install the glibc headers, it
> Martin> unfortunately tries to compile glibc with the platform's
> Martin> native toolchain. Glibc's configure script does "as
> Martin> --version", which is not understood by Apple's assembler,
> Martin> which then waits for a file to compile on standard input,
> Martin> which stalls everything.
>
> I got past this by just removing the "as --version" check from the
> configure.in file and running autoconf.
>
> Martin> I solved that problem by first creating a cross-compiler
> Martin>[...]
> I don't understand how this solves the problem.  Doesn't "as" have to
> be a native as?  How would using a powerpc assembler allow you to
> build a cross compiler that actually runs on the Mac?

Today I found a much easier to solution to my last problem:

--- glibc-2.3.2/configure~      Wed Feb 26 09:20:48 2003
+++ glibc-2.3.2/configure       Fri Feb 27 13:12:53 2004
@@ -3789,7 +3789,7 @@
   # Found it, now check the version.
   echo "$as_me:$LINENO: checking version of $AS" >&5
 echo $ECHO_N "checking version of $AS... $ECHO_C" >&6
-  ac_prog_version=`$AS --version 2>&1 | sed -n 's/^.*GNU assembler.*  
\([0-9]*\.[0-9.]*\).*$/\1/p'`
+  ac_prog_version=`$AS -v < /dev/null 2>&1 | sed -n 's/^.*GNU  
assembler.* \([0-9]*\.[0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
     2.1[3-9]*)

Since only the headers need to be built and no objects, the native as  
works as well.
The "-v < /dev/null" construct works for both GAS and Apple's as.  
Unfortunately, it does not output the same thing as "as --version" for  
GAS, although the difference is probably not critical:

 $  
/opt/crosstool/powerpc-750-linux-gnu/gcc-3.3.2-glibc-2.3.2/bin/powerpc 
-750-linux-gnu-as -v < /dev/null
GNU assembler version 2.14 (powerpc-750-linux-gnu) using BFD version  
2.14 20030612
 $  
/opt/crosstool/powerpc-750-linux-gnu/gcc-3.3.2-glibc-2.3.2/bin/powerpc 
-750-linux-gnu-as --version
GNU assembler 2.14 20030612
Copyright 2002 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms  
of
the GNU General Public License.  This program has absolutely no  
warranty.
This assembler was configured for a target of `powerpc-750-linux-gnu'.

So, in summary, all that is required to build crosstool-0.27 on Mac OS  
X targetting powerpc-750-gnu-linux is the above patch and the patch of  
my first mail to this list.

Martin


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