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From: Frank Heckenbach
Subject: Building latest gpc on Intel OS X
Date: 19 Apr 2008, 03:09:57

Adriaan van Os wrote:

> > To check it, I just tried with minised, and it works fine. Could you
> > send me or point me to the source code of Apple's sed? (I don't use
> > Mac OS, but given the source, I could probably try it under Linux.)
> > When I know what doesn't work, I might be able to amend the script.
> 
> Darwin source can be found at <http://www.opensource.apple.com/darwinsource/>, e.g. 
> <http://www.opensource.apple.com/darwinsource/tarballs/apsl/text_cmds-68.tar.gz> (free registration 
> is required) or (if that's a problem) <http://www.microbizz.nl/text_cmds-68.tar.gz>

The last link gives me a zero-length file.

> Adriaan van Os wrote:
> > Frank Heckenbach wrote:
> >> Peter Schorn wrote:
> >>
> >>> 2) Using sed 4.1.4. instead of the Apple supplied version of sed 
> >>> (maybe it would help to add an sed check in mk-t-inc).
> >>
> >> Which sed feature or invocation is problematic actually? I tried not
> >> to use any GNU sed specific feature in this script.
> > 
> > I will follow up with that.
> 
> The gcc/p/utils/tree.inc created with the darwin system-installed sed ends with:
> 
> 
>    SN (gpc_type_PObjectType)
>    SN (inoutres_variable_node)
>    SN (null_pseudo_const_node)}
> 
> {$endif}
> 
> 
> It doesn't have any of the
> 
> 
> DEFTREECODE (ERROR_MARK, "error_mark", 'x', 0)
> DEFTREECODE (IDENTIFIER_NODE, "identifier_node", 'x', 0)
> .....
> DEFTREECODE (RANGE_CHECK_EXPR, "range_check_expr", 'e', 3)
> DEFTREECODE (IO_RANGE_CHECK_EXPR, "io_range_check_expr", 'e', 3)
> #endif
> 
> 
> that popup after rebuilding with gnu-sed-4.1.4 installed.

So it's the last "sed" invocation in the script that fails.

There may be a missing semicolon. At least I thought sed requires a
";" (or newline) before "}", and some examples I've just checked
seem to suggest so, so I'm a bit surprised GNU sed works without it.

Otherwise I don't see any of the typical problems I've had with
other seds here.

--- p/utils/mk-t-inc.orig	Sat Apr 19 03:03:24 2008
+++ p/utils/mk-t-inc	Sat Apr 19 03:03:57 2008
@@ -72,5 +72,5 @@
   cat "$GCCDIR/tree.def"
   echo 'DEFTREECODE (LAST_AND_UNUSED_C_TREE_CODE, "unused", '"'x', 0)"
   sed -e '/#ifdef EGCS/,${/#ifdef EGCS/d;/#else/,/#endif/d;}'  "$GCCDIR/p/p-tree.def"
-} | sed -ne ':loop;/\\$/{N;b loop};/^DEFTREECODE/{s,/\*.*\*/,,;s/["'"'"']x["'"'"'].*/'"'x', 0)/;p;};/^#/p"
+} | sed -ne ':loop;/\\$/{N;b loop;};/^DEFTREECODE/{s,/\*.*\*/,,;s/["'"'"']x["'"'"'].*/'"'x', 0)/;p;};/^#/p"
 } > "$2" || { rm -f "$2"; false; }

> Also, there is the following problem when using the darwin system-installed sed
> rm -rf p/docdemos
> ../../gcc-3.4.6/gcc/p/script/mkdir-p p/docdemos
> [...]

For docdemos that's expected, as the extraction script needs full
regex features. But docdemos are not essential for building GPC, so
it lets you skip this step.

Frank

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