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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index 93930da..7573248 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,7 @@ AM_SILENT_RULES([yes])
 LT_INIT
 
 AC_PROG_CXX
-AX_PKG_SWIG
+AX_PKG_SWIG([4.2], [], [ AC_MSG_ERROR([swig >= 4.2 is required]) ])
 GUILE_PKG([3.0 2.2])
 PKG_CHECK_MODULES([GUILE], [guile-3.0],,[
     PKG_CHECK_MODULES([GUILE], [guile-2.2])