Re: Compiling grub2 on *BSD?

[walt <wa1ter@myrealbox.com>]

On Thu, 2008-01-31 at 12:03 +0100, Robert Millan wrote:
> On Wed, Jan 30, 2008 at 03:55:59PM -0600, jakllsch@kollasch.net wrote:
> > On Wed, Jan 30, 2008 at 11:06:50AM -0800, walt wrote:
> > > 
> > > You can tell I'm desperate because I'm putting -lgcc everywhere I can
> > > think of.  Here is the symbol in libgcc.a:
> > 
> > I (like I found in pkgsrc-wip/grub2) am using a fake __enable_execute_stack(),
> 
> Ok, we could add that dummy __enable_execute_stack() but ...
> 
> > -lgcc isn't necessary.
> 
> ... if we remove -lgcc, what happens if it becomes necessary for other versions
> of GCC?  Or does gcc already add libgcc per demand?

I got grub2 compiled on NetBSD using the fake in those pkgsrc patches.
I regenerated the patches below against grub2 cvs.  They are the same
ideas you suggested earlier, I just didn't use them all at the same
time:

Index: include/grub/mm.h
===================================================================
RCS file: /sources/grub/grub2/include/grub/mm.h,v
retrieving revision 1.8
diff -u -r1.8 mm.h
--- include/grub/mm.h   21 Jul 2007 23:32:22 -0000      1.8
+++ include/grub/mm.h   1 Feb 2008 21:04:27 -0000
@@ -33,6 +33,7 @@
 void EXPORT_FUNC(grub_free) (void *ptr);
 void *EXPORT_FUNC(grub_realloc) (void *ptr, grub_size_t size);
 void *EXPORT_FUNC(grub_memalign) (grub_size_t align, grub_size_t size);
+void EXPORT_FUNC(__enable_execute_stack) (void);
 
 /* For debugging.  */
 #if defined(MM_DEBUG) && !defined(GRUB_UTIL)
Index: kern/mm.c
===================================================================
RCS file: /sources/grub/grub2/kern/mm.c,v
retrieving revision 1.19
diff -u -r1.19 mm.c
--- kern/mm.c   23 Jan 2008 14:57:40 -0000      1.19
+++ kern/mm.c   1 Feb 2008 21:04:28 -0000
@@ -66,6 +66,9 @@
 #include <grub/disk.h>
 #include <grub/dl.h>
 
+void __enable_execute_stack(void);
+void __enable_execute_stack(void) {}
+
 #ifdef MM_DEBUG
 # undef grub_malloc
 # undef grub_realloc