patch to include gansidecl.h in {ht}config.h

[Kaveh R. Ghazi]

	This patch changes configure.in such that when it creates
{ht}config.h, they each include gansidecl.h.  This centralizes including
gansidecl.h and makes sure everyone gets it.  It also allows us to start
using PROTO() in the prototypes of config/ directory headers, but only
for built-in types, (ie. not rtx/tree/machine_mode etc.)  Eg, here is what
config.h now looks like on mips-sgi-irix6.2:

 > #include "auto-host.h"
 > #include "gansidecl.h"
 > #include "mips/xm-iris6.h"

	The whole maze of {ht}config.h include hackery is black magic to
me.  So I would appreciate some feedback as to whether I've done this
correctly.  Eg. I don't have to worry about tm.h, right?


---------------------------------------------------------------------------
>>>>>>	Also it appears that, independent of my patch, canadian cross
compiles are slightly broken (and have been for a while) because of the
settings of the $vars and $links variables in configure.in. 

 >  vars="host_xm_file tm_file xm_file build_xm_file"
 >  links="config.h tm.h tconfig.h hconfig.h"

I think $links has config.h and hconfig.h backwards based on the order
listed in $vars.  My eyeball tells me this would cause config.h to get
auto-host.h and hconfig.h would get auto-build.h in a canadian cross
compile.  (That's backwards right?)

	My patch doesn't touch this since I'm not sure.  I just noticed
it while doing my own stuff. 
---------------------------------------------------------------------------


	Is my patch okay to install?  If so, I'll submit a patch to clean
up the now redundant includes of gansidecl.h all over the source and the
dependencies in Makefile.in. 

		--Kaveh

	





Fri Oct 30 14:39:27 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

	* configure.in (host_xm_file, build_xm_file, xm_file): Arrange to
 	include gansidecl.h in {ht}config.h just before the config/
 	directory headers.


--- orig/egcs-CVS19981029/gcc/configure.in	Thu Oct 29 17:26:07 1998
+++ egcs-CVS19981029/gcc/configure.in	Fri Oct 30 13:22:40 1998
@@ -3456,14 +3456,14 @@
 # auto-host.h is the file containing items generated by autoconf and is
 # the first file included by config.h.
 null_defines=
-host_xm_file="auto-host.h ${host_xm_file}"
+host_xm_file="auto-host.h gansidecl.h ${host_xm_file}"
 
 # If host=build, it is correct to have hconfig include auto-host.h
 # as well.  If host!=build, we are in error and need to do more 
 # work to find out the build config parameters.
 if test x$host = x$build
 then
-	build_xm_file="auto-host.h ${build_xm_file}"
+	build_xm_file="auto-host.h gansidecl.h ${build_xm_file}"
 else
 	# We create a subdir, then run autoconf in the subdir.
 	# To prevent recursion we set host and build for the new
@@ -3485,9 +3485,11 @@
 	mv auto-host.h ../auto-build.h
 	cd ..
 	rm -rf $tempdir
-	build_xm_file="auto-build.h ${build_xm_file}"
+	build_xm_file="auto-build.h gansidecl.h ${build_xm_file}"
 fi
 
+xm_file="gansidecl.h ${xm_file}"
+
 vars="host_xm_file tm_file xm_file build_xm_file"
 links="config.h tm.h tconfig.h hconfig.h"
 defines="host_xm_defines null_defines xm_defines build_xm_defines"
@@ -3599,20 +3601,20 @@
 
 host_xm_file_list=
 for f in $host_xm_file; do
-	if test $f != "auto-host.h"; then
+	if test $f != "auto-host.h" -a $f != "gansidecl.h" ; then
 		host_xm_file_list="${host_xm_file_list} \$(srcdir)/config/$f"
 	else
-		host_xm_file_list="${host_xm_file_list} auto-host.h"
+		host_xm_file_list="${host_xm_file_list} $f"
 	fi
 done
 
 build_xm_file_list=
 for f in $build_xm_file; do
 	if test $f != "auto-build.h"; then
-		if test $f != "auto-host.h"; then
+		if test $f != "auto-host.h" -a $f != "gansidecl.h" ; then
 			build_xm_file_list="${build_xm_file_list} \$(srcdir)/config/$f"
 		else
-			build_xm_file_list="${build_xm_file_list} auto-host.h"
+			build_xm_file_list="${build_xm_file_list} $f"
 		fi
 	else
 		build_xm_file_list="${build_xm_file_list} auto-build.h"