https://bugs.gentoo.org/803479
--- a/configure.ac+++ b/configure.ac@@ -1062,6 +1062,7 @@AC_PROG_INSTALL
AC_PROG_INSTALL_DIRS
AC_PROG_MAKE_SET
+AM_PROG_INSTALL_SH# By default, autoconf sets INSTALL_SCRIPT to '${INSTALL_PROGRAM}'.
# That's wrong: it should be set to '${INSTALL}', so that one can