1 files changed, 52 insertions, 0 deletions
diff --git a/projects/sample/autoconf/AutoRegen.sh b/projects/sample/autoconf/AutoRegen.sh
new file mode 100755
index 0000000000000..126703ba5aaf1
--- /dev/null
+++ b/projects/sample/autoconf/AutoRegen.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+die () {
+	echo "$@" 1>&2
+	exit 1
+}
+test -d autoconf && test -f autoconf/configure.ac && cd autoconf
+test -f configure.ac || die "Can't find 'autoconf' dir; please cd into it first"
+autoconf --version | egrep '2\.[56][0-9]' > /dev/null
+if test $? -ne 0 ; then
+  die "Your autoconf was not detected as being 2.5x or 2.6x"
+fi
+cwd=`pwd`
+if test -d ../../../autoconf/m4 ; then
+  cd ../../../autoconf/m4
+  llvm_m4=`pwd`
+  llvm_src_root=../../..
+  llvm_obj_root=../../..
+  cd $cwd
+elif test -d ../../llvm/autoconf/m4 ; then
+  cd ../../llvm/autoconf/m4
+  llvm_m4=`pwd`
+  llvm_src_root=../..
+  llvm_obj_root=../..
+  cd $cwd
+else
+  while true ; do
+    echo "LLVM source root not found." 
+    read -p "Enter full path to LLVM source:" REPLY
+    if test -d "$REPLY/autoconf/m4" ; then
+      llvm_src_root="$REPLY"
+      llvm_m4="$REPLY/autoconf/m4"
+      read -p "Enter full path to LLVM objects (empty for same as source):" REPLY
+      if test -d "$REPLY" ; then
+        llvm_obj_root="$REPLY"
+      else
+        llvm_obj_root="$llvm_src_root"
+      fi
+      break
+    fi
+  done
+fi
+# Patch the LLVM_ROOT in configure.ac, if it needs it
+cp configure.ac configure.bak
+sed -e "s#^LLVM_SRC_ROOT=.*#LLVM_SRC_ROOT=\"$llvm_src_root\"#" \
+    -e "s#^LLVM_OBJ_ROOT=.*#LLVM_OBJ_ROOT=\"$llvm_obj_root\"#" configure.bak > configure.ac
+echo "Regenerating aclocal.m4 with aclocal"
+rm -f aclocal.m4
+aclocal -I $llvm_m4 -I "$llvm_m4/.." || die "aclocal failed"
+echo "Regenerating configure with autoconf"
+autoconf --warnings=all -o ../configure configure.ac || die "autoconf failed"
+cd ..
+exit 0