qoriq: Adjust debug compile flags to workaround architecture limits

PowerPC e500v2 has a 248-byte limit on immediate offsets in load/store
instructions. When compiling with -O0, GCC generates stack frames that
exceed this limit (>4KB for complex functions), causing assembler errors.

Switch to -O1 for qoriq debug builds to reduce stack frame size while
maintaining full debug capabilities (-g3 -ggdb3 -fno-omit-frame-pointer).

Author: th0ma7

mk/spksrc.cross-env.mk

@@ -76,7 +76,11 @@ ENV += TC_KERNEL=$(TC_KERNEL)
 #  -gz compresses debug sections to reduce file size (60-80% smaller)
 ifeq ($(strip $(GCC_DEBUG_INFO)),1)
   ifeq ($(strip $(GCC_DEBUG_FLAGS)),)
-    GCC_DEBUG_FLAGS = -ggdb3 -g3 -O0
+    ifeq ($(findstring $(ARCH), $(PPC_ARCHS)),$(ARCH))
+      GCC_DEBUG_FLAGS = -ggdb3 -g3 -O1 -fno-omit-frame-pointer
+    else
+      GCC_DEBUG_FLAGS = -ggdb3 -g3 -O0
+    endif
 
     # Check compression support and add to flags
     GCC_SUPPORTS_GZ := $(shell echo | $(WORK_DIR)/../../../toolchain/syno-$(ARCH)-$(TCVERSION)/work/$(TC_TARGET)/bin/$(TC_PREFIX)gcc -gz -E - 2>/dev/null 1>&2 && echo yes)

mk/spksrc.cross-meson-crossfile.mk

@@ -39,17 +39,9 @@ endif
 ifeq ($(GCC_DEBUG_INFO),1)
 	@echo "debug = 'true'" ; \
 	echo "b_ndebug = 'true'" ; \
-	echo "optimization = '0'" ; \
+	echo "optimization = '$(strip $(patsubst -O%,%,$(filter -O%,$(GCC_DEBUG_FLAGS))))'" ; \
 	echo
 endif
-#	@echo "install_rpath = [" ; \
-#	echo $(LDFLAGS) $(ADDITIONAL_LDFLAGS) | tr ' ' '\n' | grep '^-Wl,--rpath,' | sed -e "s/^-Wl,--rpath,//" -e "s/^/\t'/" -e "s/$$/',/" ; \
-#	echo -ne "\t]\n" ; \
-#	echo
-#	@echo "runtime_rpath = [" ; \
-#	echo $(LDFLAGS) $(ADDITIONAL_LDFLAGS) | tr ' ' '\n' | grep '^-Wl,--rpath,' | sed -e "s/^-Wl,--rpath,//" -e "s/^/\t'/" -e "s/$$/',/" ; \
-#	echo -ne "\t]\n" ; \
-#	echo
 	@echo "c_args = ["
 ifneq ($(strip $(MESON_BUILTIN_C_ARGS)),)
 	@echo -ne "\t'$(MESON_BUILTIN_C_ARGS)',\n"