new file mode 100755
@@ -0,0 +1,61 @@
+#! /bin/sh
+# patches-from-git.sh - Create buildroot patches from a git repository
+#
+
+outdir="$1"
+gitdir="$2"
+basecommit="$3"
+basename="$4"
+
+if [ $# != 4 ]; then
+ cat >&2 <<EOF
+Usage: $0 <outdir> <gitdir> <base-commit> <basename>
+
+Patches are created from the repository in <gitdir>, starting from
+(and excluding) <base-commit>, up to HEAD. The patches are stored
+in <outdir> and are named <basename>-00nn-commit-msg.patch.
+<gitdir> must not contain uncommitted changes.
+EOF
+ exit 1
+fi
+
+# Verify arguments
+if [ ! -d "$outdir" ]; then
+ printf 'Output directory "%s" doesn'\''t exist\n' "$outdir" >&2
+ exit 1
+fi
+
+if [ ! -d "$gitdir" ]; then
+ printf 'git repository "%s" doesn'\''t exist\n' "$outdir" >&2
+ exit 1
+fi
+cd "$gitdir"
+git rev-parse --verify HEAD >/dev/null || exit 1
+
+if ! git rev-parse --verify "$basecommit" > /dev/null; then
+ printf 'Invalid base commit "%s"\n' "$basecommit" >&2
+ exit 1
+fi
+
+
+# First delete the existing patches, so rebases are supported correctly
+/bin/rm -f "${outdir}/${basename}"-*.patch
+
+# Make patches unnumbered (-N) to avoid differences just because the
+# total has changed.
+# Don't track renames, because apply-patches.sh doesn't deal with them.
+patchfiles=$(git format-patch -o "$outdir" -N --no-renames "$basecommit") || exit 1
+
+# Give the patches the correct name
+# Also strip the last two lines, which contain the git version, to avoid
+# differences just because git has changed. Note that this is not very
+# robust, because future git versions may add other cruft there.
+for patch in $patchfiles; do
+ lastdashline=$(awk '
+ BEGIN {lastdash=0}
+ /^--[[:space:]]$/ {lastdash=NR}
+ END {print lastdash}' \
+ "$patch")
+ head -$lastdashline "$patch" > "${outdir}/${basename}-${patch##*/}"
+ /bin/rm -f "$patch"
+done
The patches-from-git.sh script automates the creation of patches from a git repository. It adds some post-processing on top of git-format-patch to make sure that only relevant modifications are made to a patch file. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> --- The intention is to use this to simplify patching of packages, in combination with the XXX_OVERRIDE_DIR facility. support/scripts/patches-from-git.sh | 61 +++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+)