[PATCH v3 1/4] Move the ioemu-dir-find shell script to an external file

[<stefano.stabellini@eu.citrix.com>]

Add support for configuring upstream qemu and rename ioemu-remote
ioemu-dir-remote.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

diff --git a/.hgignore b/.hgignore
--- a/.hgignore
+++ b/.hgignore
@@ -291,7 +291,7 @@
 ^tools/xm-test/lib/XmTestLib/config.py$
 ^tools/xm-test/lib/XmTestReport/xmtest.py$
 ^tools/xm-test/tests/.*\.test$
-^tools/ioemu-remote
+^tools/ioemu-dir-remote
 ^tools/ioemu-dir$
 ^tools/ocaml/.*/.*\.annot$
 ^tools/ocaml/.*/.*\.cmx?a$
diff --git a/scripts/git-checkout.sh b/scripts/git-checkout.sh
new file mode 100755
--- /dev/null
+++ b/scripts/git-checkout.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+
+TREE=$1
+TAG=$2
+DIR=$3
+
+
+if test -d $TREE; then
+	mkdir -p $DIR
+	ROOT=$TREE
+else
+	if test \! -d $DIR-remote; then
+		rm -rf $DIR-remote $DIR-remote.tmp;
+		mkdir $DIR-remote.tmp; rmdir $DIR-remote.tmp;
+		git clone $TREE $DIR-remote.tmp;
+		if test "$TAG" ; then
+			cd $DIR-remote.tmp
+			git branch -D dummy >/dev/null 2>&1 ||:
+			git checkout -b dummy $TAG
+			cd ..
+		fi
+		mv $DIR-remote.tmp $DIR-remote
+	fi
+	rm -f $DIR
+	ln -sf $DIR-remote $DIR
+	ROOT=.
+fi
+
+set -e
+cd $DIR
+# is this qemu-xen-traditional?
+if test -f $ROOT/xen-setup; then
+	$ROOT/xen-setup $IOEMU_CONFIGURE_CROSS
+# is this qemu-xen?
+elif test -f $ROOT/configure; then
+	cd $ROOT
+	./configure --enable-xen --target-list=i386-softmmu \
+		--extra-cflags="-I$XEN_ROOT/tools/include \
+		-I$XEN_ROOT/tools/libxc \
+		-I$XEN_ROOT/tools/xenstore" \
+		--extra-ldflags="-L$XEN_ROOT/tools/libxc \
+		-L$XEN_ROOT/tools/libxenstore" \
+		--bindir=/usr/lib/xen/bin \
+		--disable-kvm \
+		$IOEMU_CONFIGURE_CROSS
+fi
diff --git a/tools/Makefile b/tools/Makefile
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -70,7 +70,7 @@ clean: subdirs-clean
 
 .PHONY: distclean
 distclean: subdirs-distclean
-	rm -rf ioemu-dir ioemu-remote
+	rm -rf ioemu-dir ioemu-dir-remote
 
 ifneq ($(XEN_COMPILE_ARCH),$(XEN_TARGET_ARCH))
 IOEMU_CONFIGURE_CROSS ?= --cpu=$(XEN_TARGET_ARCH) \
@@ -78,41 +78,14 @@ IOEMU_CONFIGURE_CROSS ?= --cpu=$(XEN_TAR
 			 --interp-prefix=$(CROSS_SYS_ROOT)
 endif
 
-QEMU_ROOT := $(shell if [ -d "$(CONFIG_QEMU)" ]; then echo "$(CONFIG_QEMU)"; else echo .; fi)
-ifneq ($(QEMU_ROOT),.)
-export QEMU_ROOT
-endif
-
 ioemu-dir-find:
-	set -ex; \
-	if test -d $(CONFIG_QEMU); then \
-		mkdir -p ioemu-dir; \
-	else \
-		if [ ! -d ioemu-remote ]; then \
-			rm -rf ioemu-remote ioemu-remote.tmp; \
-			mkdir ioemu-remote.tmp; rmdir ioemu-remote.tmp; \
-			$(GIT) clone $(CONFIG_QEMU) ioemu-remote.tmp; \
-			if [ "$(QEMU_TAG)" ]; then			\
-				cd ioemu-remote.tmp;			\
-				$(GIT) branch -D dummy >/dev/null 2>&1 ||:; \
-				$(GIT) checkout -b dummy $(QEMU_TAG);	\
-				cd ..;					\
-			fi;						\
-			mv ioemu-remote.tmp ioemu-remote; \
-		fi; \
-		rm -f ioemu-dir; \
-		ln -sf ioemu-remote ioemu-dir; \
-	fi
-	set -e; \
-		$(buildmakevars2shellvars); \
-		cd ioemu-dir; \
-		$(QEMU_ROOT)/xen-setup $(IOEMU_CONFIGURE_CROSS)
-
+	$(XEN_ROOT)/scripts/git-checkout.sh $(CONFIG_QEMU) $(QEMU_TAG) ioemu-dir
+	
 .PHONY: ioemu-dir-force-update
 ioemu-dir-force-update:
 	set -ex; \
 	if [ "$(QEMU_TAG)" ]; then \
-		cd ioemu-remote; \
+		cd ioemu-dir-remote; \
 		$(GIT) fetch origin; \
 		$(GIT) reset --hard $(QEMU_TAG); \
 	fi