[PATCH v4 for-4.10] scripts: introduce a script for build test

[Wei Liu <wei.liu2@citrix.com>]

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: George Dunlap <George.Dunlap@eu.citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Tim Deegan <tim@xen.org>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: Julien Grall <julien.grall@arm.com>
Cc: Anthony PERARD <anthony.perard@citrix.com>

v4:
1. Check, save/restore $?.
2. Don't use trap, check exit code directly.
3. More error messages.

v3:
1. Use git-clean in default rune.
2. Print more friendly message.
3. Restore HEAD automatically.
---
 scripts/build-test.sh | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100755 scripts/build-test.sh

diff --git a/scripts/build-test.sh b/scripts/build-test.sh
new file mode 100755
index 0000000000..413540c13b
--- /dev/null
+++ b/scripts/build-test.sh
@@ -0,0 +1,71 @@
+#!/bin/sh
+
+# Run command on every commit within the range specified. If no command is
+# provided, use the default one to clean and build the whole tree.
+#
+# The default rune is rather simple. To do a cross-build, please put your usual
+# build rune in a shell script and invoke it with this script.
+
+if ! test -f xen/common/kernel.c; then
+    echo "Please run this script from top-level directory"
+    exit 1
+fi
+
+if test $# -lt 2 ; then
+    echo "Usage: $0 <BASE> <TIP> [CMD]"
+    exit 1
+fi
+
+status=`git status -s`
+if test -n "$status"; then
+    echo "Tree is dirty, aborted"
+    exit 1
+fi
+
+BASE=$1; shift
+TIP=$1; shift
+
+ORIG_BRANCH=`git symbolic-ref -q --short HEAD`
+if test $? -ne 0; then
+    echo "Detached HEAD, aborted"
+    exit 1
+fi
+
+git rev-list $BASE..$TIP | nl -ba | tac | \
+while read num rev; do
+    echo "Testing $num $rev"
+
+    git checkout $rev
+    ret=$?
+    if test $ret -ne 0; then
+        echo "Failed to checkout $num $rev with $ret"
+        exit $ret
+    fi
+
+    if test $# -eq 0 ; then
+        git clean -fdx && ./configure && make -j4
+    else
+        "$@"
+    fi
+    ret=$?
+    if test $ret -ne 0; then
+        echo "Failed at $num $rev with $ret"
+        exit $ret
+    fi
+    echo
+done
+
+ret=$?
+
+echo "Restoring original HEAD"
+git checkout $ORIG_BRANCH
+gco_ret=$?
+if test $gco_ret -ne 0; then
+    echo "Failed to restore orignal HEAD. Check tree status before doing anything else!"
+    exit $gco_ret
+fi
+
+if test $ret -eq 0; then
+    echo "ok."
+fi
+exit $ret
-- 
2.11.0


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