From 7c56b094d4c320b0b0afb41236c162d1f02b8995 Mon Sep 17 00:00:00 2001
From: Daniel Kiper <daniel.kiper@oracle.com>
Date: Tue, 15 Dec 2015 15:37:55 +0100
Subject: [PATCH 15/43] x86/boot: check for not allowed sections before linking

Currently check for not allowed sections is performed just after
compilation. However, if compilation succeeds and check fails then
second build will create xen.gz/xen.efi without any visible error.
This happens because %.o: %.c recipe created object file during first
run and make do not execute this recipe during second run. So, look
for not allowed sections before linking. This way check will be
executed every time.

Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
master commit: d380b3559734739ae009cd3c0e9aabb5602863e2
master date: 2015-11-25 17:24:36 +0100
---
 xen/arch/x86/boot/build32.mk | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/xen/arch/x86/boot/build32.mk b/xen/arch/x86/boot/build32.mk
index c208249..4a1421f 100644
--- a/xen/arch/x86/boot/build32.mk
+++ b/xen/arch/x86/boot/build32.mk
@@ -16,11 +16,7 @@ CFLAGS := $(filter-out -flto,$(CFLAGS))
 	$(OBJCOPY) -O binary $< $@
 
 %.lnk: %.o
-	$(LD) $(LDFLAGS_DIRECT) -N -Ttext 0 -o $@ $<
-
-%.o: %.c
-	$(CC) $(CFLAGS) -c -fpic $< -o $@
-	$(OBJDUMP) -h $@ | sed -n '/[0-9]/{s,00*,0,g;p;}' |\
+	$(OBJDUMP) -h $< | sed -n '/[0-9]/{s,00*,0,g;p;}' |\
 		while read idx name sz rest; do \
 			case "$$name" in \
 			.data|.data.*|.rodata|.rodata.*|.bss|.bss.*) \
@@ -29,6 +25,10 @@ CFLAGS := $(filter-out -flto,$(CFLAGS))
 				exit $$(expr $$idx + 1);; \
 			esac; \
 		done
+	$(LD) $(LDFLAGS_DIRECT) -N -Ttext 0 -o $@ $<
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c -fpic $< -o $@
 
 reloc.o: reloc.c $(RELOC_DEPS)
 
-- 
2.7.2