I confirm it starts properly on ppc with -fno-strict-aliasing. Attached patch.
Cheers, Gabriele
--- debian/rules 2011-01-01 11:52:27.000000000 +0100
+++ debian/rules.orig 2011-01-01 11:52:16.000000000 +0100
@@ -58,8 +58,6 @@
-e "s/{GRASS_ABI}/$(GRASS_ABI)/g" $$^ >$$@
endef
-CFLAGS += -fno-strict-aliasing
-
TEMPLATES := $(foreach t,$(wildcard debian/*.in),$(basename $(t)))
TEMPLATES += $(foreach t,$(wildcard debian/*{QGIS_ABI}*),$(subst {QGIS_ABI},$(QGIS_ABI),$(t)))
