File xen.SEABIOS_CPP.patch of Package xen

From: Olaf Hering <olaf@aepfle.de>
Date: Thu, 11 Mar 2021 10:30:25 +0100
Subject: SEABIOS_CPP

seabios needs the real cpp, while qemu and others need cc -E due to -c.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
---
 tools/firmware/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/tools/firmware/Makefile
+++ b/tools/firmware/Makefile
@@ -1,19 +1,20 @@
 XEN_ROOT = $(CURDIR)/../..
 include $(XEN_ROOT)/tools/Rules.mk
 
 # hvmloader is a 32-bit protected mode binary.
 TARGET      := hvmloader/hvmloader
 INST_DIR := $(DESTDIR)$(XENFIRMWAREDIR)
 
+SEABIOS_CPP ?= cpp
 SUBDIRS-y :=
 ifeq ($(OVMF_PATH),)
 SUBDIRS-$(CONFIG_OVMF) += ovmf-dir
 endif
 ifeq ($(SEABIOS_PATH),)
 SUBDIRS-$(CONFIG_SEABIOS) += seabios-dir
 endif
 SUBDIRS-$(CONFIG_ROMBIOS) += rombios
 SUBDIRS-$(CONFIG_ROMBIOS) += vgabios
 SUBDIRS-$(CONFIG_ROMBIOS) += etherboot
 SUBDIRS-y += hvmloader
 
@@ -29,25 +30,25 @@ seabios-dir:
 
 .PHONY: all
 all: $(SUBDIRS-y)
 ifeq ($(CONFIG_ROMBIOS),y)
 	@set -e; if [ $$((`( bcc -v 2>&1 | grep version || echo 0.0.0 ) | cut -d' ' -f 3 | awk -F. '{ printf "0x%02x%02x%02x", $$1, $$2, $$3}'`)) -lt $$((0x00100e)) ] ; then \
 	echo "==========================================================================="; \
 	echo "Require dev86 rpm or bin86 & bcc debs version >= 0.16.14 to build firmware!"; \
 	echo "(visit http://www.debath.co.uk/dev86/ for more information)"; \
 	echo "==========================================================================="; \
 	false ; \
 	fi
 endif
-	$(MAKE) $(LD32BIT-y) CC=$(CC) PYTHON=$(PYTHON) VERSION="$(SEABIOS_UPSTREAM_REVISION)" subdirs-$@
+	$(MAKE) $(LD32BIT-y) CC=$(CC) CPP=$(SEABIOS_CPP) PYTHON=$(PYTHON) VERSION="$(SEABIOS_UPSTREAM_REVISION)" subdirs-$@
 
 
 .PHONY: install
 install: all
 	[ -d $(INST_DIR) ] || $(INSTALL_DIR) $(INST_DIR)
 	[ ! -e $(TARGET) ] || $(INSTALL_DATA) $(TARGET) $(INST_DIR)
 
 .PHONY: clean
 clean: subdirs-clean
 
 .PHONY: distclean
 distclean: subdirs-distclean