Try to work around the relative install-sh path problem.
Patch from Eli.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109163 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 5dbb422..9541b8a 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -1011,6 +1011,13 @@
dnl Find the install program
AC_PROG_INSTALL
+dnl Prepend src dir to install path dir if it's a relative path
+dnl This is a hack for installs that take place in something other
+dnl than the top level.
+case "$INSTALL" in
+ [[\\/$]]* | ?:[[\\/]]* ) ;;
+ *) INSTALL="\\\$(TOPSRCDIR)/$INSTALL" ;;
+esac
dnl Checks for documentation and testing tools that we can do without. If these
dnl are not found then they are set to "true" which always succeeds but does