File xen.672949d6c61d9cba01c5b414eed9d522082f04d3.patch of Package xen

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File xen.672949d6c61d9cba01c5b414eed9d522082f04d3.patch of Package xen

From: Olaf Hering <olaf@aepfle.de>
Date: Mon, 26 Jun 2017 14:55:07 +0200
Subject: 672949d6c61d9cba01c5b414eed9d522082f04d3

rombios: prevent building with PIC/PIE

If the default compiler silently defaults to to -fPIC/-fPIE building
rombios fails:

ld -melf_i386 -s -r 32bitbios.o tcgbios/tcgbiosext.o util.o pmm.o -o 32bitbios_all.o
 There are undefined symbols in the BIOS:
          U _GLOBAL_OFFSET_TABLE_
 make[10]: *** [Makefile:26: 32bitbios_all.o] Error 11

Prevent the failure by enforcing non-PIC/PIE mode.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
---
 tools/firmware/rombios/32bit/Makefile         | 2 ++
 tools/firmware/rombios/32bit/tcgbios/Makefile | 2 ++
 2 files changed, 4 insertions(+)

--- a/tools/firmware/rombios/32bit/Makefile
+++ b/tools/firmware/rombios/32bit/Makefile
@@ -1,18 +1,20 @@
 XEN_ROOT = $(CURDIR)/../../../..
 include $(XEN_ROOT)/tools/firmware/Rules.mk
 
 TARGET = 32bitbios_flat.h
 
 CFLAGS += $(CFLAGS_xeninclude) -I..
+$(call cc-option-add,CFLAGS,CC,-fno-pic)
+$(call cc-option-add,CFLAGS,CC,-fno-PIE)
 
 SUBDIRS = tcgbios
 
 .PHONY: all
 all: subdirs-all
 	$(MAKE) $(TARGET)
 
 .PHONY: clean
 clean: subdirs-clean
 	rm -rf *.o $(TARGET) $(DEPS)
 
 $(TARGET): 32bitbios_all.o
--- a/tools/firmware/rombios/32bit/tcgbios/Makefile
+++ b/tools/firmware/rombios/32bit/tcgbios/Makefile
@@ -1,18 +1,20 @@
 XEN_ROOT = $(CURDIR)/../../../../..
 include $(XEN_ROOT)/tools/firmware/Rules.mk
 
 TARGET  = tcgbiosext.o
 
 CFLAGS += $(CFLAGS_xeninclude) -I.. -I../..
+$(call cc-option-add,CFLAGS,CC,-fno-pic)
+$(call cc-option-add,CFLAGS,CC,-fno-PIE)
 
 .PHONY: all
 all: $(TARGET)
 
 .PHONY: clean
 clean:
 	rm -rf *.o $(TARGET) $(DEPS)
 
 $(TARGET): tcgbios.o tpm_drivers.o
 	$(LD) $(LDFLAGS_DIRECT) -r $^ -o $@
 
 -include $(DEPS)

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File xen.672949d6c61d9cba01c5b414eed9d522082f04d3.patch of Package xen

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