--- backends-1.0.31/acinclude.m4.orig	2020-12-13 12:54:11.199330339 +0100
+++ backends-1.0.31/acinclude.m4	2020-12-13 12:54:16.499425763 +0100
@@ -73,9 +73,6 @@
   if test "${ac_cv_header_unistd_h}" != "yes" ; then
     MISSING_HEADERS="${MISSING_HEADERS}\"unistd.h\" "
   fi
-  if test "${ac_cv_header_stdc}" != "yes" ; then
-    MISSING_HEADERS="${MISSING_HEADERS}\"ANSI C headers\" "
-  fi
   if test "${MISSING_HEADERS}" != "" ; then
     echo "*** The following essential header files couldn't be found:"
     echo "*** ${MISSING_HEADERS}"