build-sys: at configure check for verifying that ln supports --relative

diff --git a/configure.ac b/configure.ac
index 16b689e253702f0e2da167819dd5c7612abdd7e4..0a4e901d75208ad82c8018c939161537f24cabaa 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -76,6 +76,8 @@ AC_PATH_PROG([KMOD], [kmod], [/usr/bin/kmod], [$PATH:/usr/sbin:/sbin])
 
 AC_PATH_PROG([KEXEC], [kexec], [/usr/sbin/kexec], [$PATH:/usr/sbin:/sbin])
 
+AS_IF([! ln --relative --help > /dev/null 2>&1], [AC_MSG_ERROR([*** ln doesn't support --relative ***])])
+
 M4_DEFINES=
 
 # gtkdocize greps for '^GTK_DOC_CHECK', so it needs to be on its own line