Add build script to build all components in one run.

Run this script in the parent directory of the working copies.  It
does a VPATH build in ~/tmp/gpg-tmp/b in the right order and installs
everything below ~/tmp/gpg-tmp/.

Based on a script by Jim Meyering.

scripts/ChangeLog

@@ -1,3 +1,8 @@
+2011-11-28  Werner Koch  <wk@g10code.com>,
+	    Jim Meyering  <jim@meyering.net>
+
+	* build-all.sh: New.
+
 2011-08-10  Werner Koch  <wk@g10code.com>
 
 	* config.guess, config.sub: Update to version 2011-06-03.

scripts/build-all.sh

@@ -0,0 +1,49 @@
+#! /bin/bash
+# A simple script to build all parts of GnuPG from the git repos.
+#
+# Copyright 2011 Free Software Foundation, Inc.
+#
+# This file is free software; as a special exception the author gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+#
+# This file is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+# Run this in another window:
+#tail -n0 -F ~/tmp/gpg-tmp/b/{libgpg-error,libksba,libassuan,libgcrypt,gnupg}.log &
+
+p=$HOME/tmp/gpg-tmp
+parts="libgpg-error libassuan libksba libgcrypt gnupg"
+die=no
+for i in $parts; do
+  if test -d $i ; then
+    :
+  else
+    die=yes
+    echo "component $i missing"
+  fi
+done
+test $die = yes && exit 1
+
+mkdir $p || exit 1
+mkdir $p/b || exit 1
+for i in $parts; do
+  mkdir $p/b/$i || exit 1
+done
+
+export PATH=$p/bin:$PATH
+export LD_LIBRARY_PATH=$p/lib
+here="$(pwd)"
+
+prev=
+cfg="configure --enable-maintainer-mode --prefix=$p"
+for i in $parts; do
+  echo $i...
+  test -n "$prev" && cfg="$cfg --with-$prev-prefix=$p"
+  (cd $p/b/$i && eval $here/$i/$cfg && make && make check && make install) \
+      > $p/b/$i.log 2>&1 \
+      || { echo FAIL; break; }
+  prev=$i
+done