-AC_MSG_CHECKING(for $PKG_CONFIG library directory)
-if test "x$PKG_CONFIG" = xnone ; then
- PKG_CONFIG_LIBDIR=none
-else
- AC_ARG_WITH(pkg-config-libdir,
- [ --with-pkg-config-libdir=XXX use given directory for installing pc-files],
- [PKG_CONFIG_LIBDIR=$withval],
- [PKG_CONFIG_LIBDIR=yes])
-fi
+
+case $PKG_CONFIG in
+(no|none|yes)
+ AC_MSG_CHECKING(for pkg-config library directory)
+ ;;
+(*)
+ AC_MSG_CHECKING(for $PKG_CONFIG library directory)
+ ;;
+esac
+
+PKG_CONFIG_LIBDIR=no
+AC_ARG_WITH(pkg-config-libdir,
+ [ --with-pkg-config-libdir=XXX use given directory for installing pc-files],
+ [PKG_CONFIG_LIBDIR=$withval],
+ [test "x$PKG_CONFIG" != xnone && PKG_CONFIG_LIBDIR=yes])