gl/configure.ac: typo

diff --git a/src/gl/configure.ac b/src/gl/configure.ac
index 041dfbf0c6f87c0db7770dc834a86520345f4d96..91ed2330bc144315a57325a44a8a607315f6e7ef 100644 (file)
--- a/src/gl/configure.ac
+++ b/src/gl/configure.ac
@@ -64,7 +64,7 @@ AC_PROG_INSTALL
 AC_CHECK_PROG([PKG_CONFIG], [pkg-config], [yes])
 
 if ! pkg-config --exists gl glu gtk+-3.0 2>/dev/null; then
-    AC_ERROR([libGL not found.])
+    AC_MSG_ERROR([libGL not found.])
 fi
 
 : ${MIT_SCHEME_EXE=mit-scheme}