build-sys: fix MKDIR_P for recent automake

[catta] / configure.ac

diff --git a/configure.ac b/configure.ac
index 0e190ba7452baa942f0a7e963cfb7aa67c7e8968..9debce21a67e6b0132b0f15a83d9412173b9b286 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -59,6 +59,7 @@ AC_PROG_CXX
 AM_PROG_CC_C_O
 AC_USE_SYSTEM_EXTENSIONS
 AC_PROG_CPP
+AC_PROG_MKDIR_P
 AC_PROG_INSTALL
 AC_PROG_LN_S
 AC_PROG_MAKE_SET