Re: Question on -Werror usage in Makefiles...

[Eric Botcazou <ebotcazou at libertysurf dot fr>]

> Then please send a patch for e.g. adding it to config/sparc/t-sol2.

Sorry, I tested on my locally modified files...

It turns out that, with an unmodified tree, adding

# mprotect not declared (see config/sol2.h)
_trampoline.o-warn = -Wno-error

# pthreads initializer problem
unwind-dw2.o-warn = -Wno-error

to config/sparc/t-sol2 doesn't work, supposedly because libgcc.a is built by 
a separate script (mklibgcc).

> If we figure out that we cannot get some platforms to bootstrap with
> this change, then let's revert it.  But let's give it a try, I see the
> benefits more than the problems.

I certainly don't question the long-term benefits. I simply don't understand 
why a patch that had been on hold for a while (covering stage1/stage2) 
because of known potential issues was merged during stage3.


Here's the only fix I can come up with (I don't know the makefile machinery 
very well), but it is ugly because we now have '-Werror -Wno-error' on the 
command line.


2003-11-03  Eric Botcazou  <ebotcazou@libertysurf.fr>

	PR bootstrap/12876
	* config/sparc/t-sol2: Add -Wno-error to TARGET_LIBGCC2_CFLAGS.


-- 
Eric Botcazou

Index: config/sparc/t-sol2
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/sparc/t-sol2,v
retrieving revision 1.11
diff -u -r1.11 t-sol2
--- config/sparc/t-sol2	16 Dec 2002 18:21:59 -0000	1.11
+++ config/sparc/t-sol2	3 Nov 2003 13:15:19 -0000
@@ -21,4 +21,4 @@
 # routines in crtstuff.c.
 
 CRTSTUFF_T_CFLAGS = -fPIC
-TARGET_LIBGCC2_CFLAGS = -fPIC
+TARGET_LIBGCC2_CFLAGS = -fPIC -Wno-error