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-rwxr-xr-xsofort/tools/srctree.sh83
1 files changed, 83 insertions, 0 deletions
diff --git a/sofort/tools/srctree.sh b/sofort/tools/srctree.sh
new file mode 100755
index 0000000..90a1d89
--- /dev/null
+++ b/sofort/tools/srctree.sh
@@ -0,0 +1,83 @@
+#!/bin/sh
+
+# srctree.sh: support for out-of-tree builds in posix make mode.
+# this file is covered by COPYING.SOFORT.
+
+set -eu
+
+usage()
+{
+cat << EOF >&2
+
+Usage:
+ --help show this HELP message
+ --srctree=SRCTREE set source directory
+
+EOF
+exit 1
+}
+
+
+# one
+workdir=$(pwd -P)
+srctree=
+argloop=
+
+
+for arg ; do
+ case "$arg" in
+ --help)
+ usage
+ ;;
+
+ --srctree=*)
+ srctree=${arg#*=}
+ ;;
+
+ --)
+ argloop='done'
+ ;;
+
+ *)
+ if [ -z "$argloop" ]; then
+ printf 'Invalid option: %s\n' "$arg" >&2
+ usage
+ fi
+ ;;
+ esac
+done
+
+
+# two
+if [ -z "$srctree" ] ; then
+ usage
+fi
+
+cd -- "$srctree"
+srctree=$(pwd -P)
+cd -- "$workdir"
+
+if [ "$srctree" = "$workdir" ]; then
+ exit 0
+fi
+
+
+# three
+for arg ; do
+ case "$arg" in
+ --srctree=*)
+ ;;
+
+ --)
+ ;;
+
+ *)
+ stat "$arg" > /dev/null 2>&1 \
+ || ln -s -- "$srctree/$arg" "$arg"
+ ;;
+ esac
+done
+
+
+# all done
+exit 0