Update the build system for pristine source directory builds. This

update is primarily work done by Larry Doolittle, but I did some
touchups of my own to make it work for me,
 -Erik

1 files changed, 39 insertions, 0 deletions

diff --git a/pristine_setup.sh b/pristine_setup.sh
new file mode 100755
index 000000000..dca278c73
--- /dev/null
+++ b/pristine_setup.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+#
+# To compile BusyBox without touching the original sources
+# (as might be interesting for multi-target builds), create 
+# an empty directory, cd into it, and run this program by
+# giving its explicit path (kind of like how you would run
+# configure, if BusyBox had one).  Then you should be ready
+# to "make".  Files in the build tree, in particular Config.h,
+# will override those in the pristine source tree.
+#
+
+
+# if you use a ? in your path name, you lose.
+DIR=`basedir ${0%%/pristine_setup}`
+if [ ! -d $DIR ]; then
+  echo "unexpected problem: $DIR is not a directory.  Aborting pristine setup"
+  exit
+fi
+
+echo " "
+
+if [ -e ./Config.h ]; then
+  echo "./Config.h already exists: not overwriting"
+else
+    cp $DIR/Config.h Config.h
+fi
+
+if [ -e ./Makefile ]; then
+    echo "./Makefile already exists: not overwriting"
+else
+    sed -e "s?BB_SRC_DIR =?BB_SRC_DIR = $DIR?" <$DIR/Makefile >Makefile || exit
+fi
+
+
+echo " "
+echo "You may now type 'make' to build busybox in this directory"
+echo "($PWD) using the pristine sources in $DIR"
+echo " "
+