libgo: Generate dependencies automatically.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181955 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 32 insertions, 0 deletions

diff --git a/libgo/godeps.sh b/libgo/godeps.sh
new file mode 100644
index 00000000000..7ae5af93bf4
--- /dev/null
+++ b/libgo/godeps.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+# Copyright 2011 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# The godeps.sh script outputs a dependency file for a package.  The
+# dependency file is then included in the libgo Makefile.  This is
+# automatic dependency generation, Go style.
+
+# The first parameter is the name of the file being generated.  The
+# remaining parameters are the names of Go files which are scanned for
+# imports.
+
+set -e
+
+if test $# = 0; then
+    echo 1>&2 "Usage: godeps.sh OUTPUT INPUTS..."
+    exit 1
+fi
+
+output=$1
+shift
+
+deps=`for f in $*; do cat $f; done | 
+  sed -n -e '/^import.*"/p; /^import[ 	]*(/,/^)/p' |
+  grep '"' |
+  grep -v '"unsafe"' |
+  sed -e 's/^.*"\([^"]*\)".*$/\1/' -e 's/$/.gox/' |
+  sort -u`
+
+echo $output: $deps