problem upgrading tcl

[Derek Harland]

> I have been trying for a while now to upgrade tcl zu version 8.4.15
> but I run into problem when compiling the file tclLoadDyld.c. The
> relevant error message is
>
> gcc -c -Os -O2 -pipe  -I/opt/local/include  -DTCL_DBGX= -Wall -Wno-
> [snip]
> In file included from /opt/local/var/macports/build/
> _opt_local_var_macports_sources_rsync.macports.org_release_ports_lang_ 
> tc
> l/work/tcl8.4.15/unix/tclLoadDyld.c:23:
> /opt/local/include/mach-o/arch.h:35: error: nested redefinition of
> 'enum NXByteOrder'
> /opt/local/include/mach-o/arch.h:35: error: redeclaration of 'enum
> NXByteOrder'
> /opt/local/include/mach-o/arch.h:36: error: redeclaration of
> enumerator 'NX_UnknownByteOrder'
> /usr/include/architecture/byte_order.h:137: error: previous
> definition of 'NX_UnknownByteOrder' was here
> /opt/local/include/mach-o/arch.h:37: error: redeclaration of
> enumerator 'NX_LittleEndian'
> /usr/include/architecture/byte_order.h:138: error: previous
> definition of 'NX_LittleEndian' was here
> /opt/local/include/mach-o/arch.h:39: error: redeclaration of
> enumerator 'NX_BigEndian'
> /usr/include/architecture/byte_order.h:140: error: previous
> definition of 'NX_BigEndian' was here
> make: *** [tclLoadDyld.o] Error 1
>
> Warning: the following items did not execute (for tcl):
> org.macports.activate org.macports.build org.macports.destroot
> org.macports.install
> Error: Status 1 encountered during processing.
>
>
> Apparently I get problems because gcc looks also at files in /usr/
> include not only in /opt/local/include.
> Why is that and how can I prevent it?
>
> Thanks for your help.
> Joerg

This problem could be being caused by odcctools ... is that installed  
on your system?  It may have been installed
if you have installed eg py-numpy or g95.  To compile tcl I needed to
	sudo port deactivate odcctools
	sudo port -c upgrade tcl
	sudo port activate odcctools

[i discovered this off someone else on this list!]
derek.