--- configure.ac.orig	2019-05-29 13:55:23.831832920 +0200
+++ configure.ac	2019-05-29 13:55:35.659368564 +0200
@@ -48,7 +48,7 @@
 # Checks for library functions.
 AC_FUNC_ERROR_AT_LINE
 AC_FUNC_MALLOC
-AC_FUNC_REALLOC
+#AC_FUNC_REALLOC
 AC_FUNC_STRTOD
 AC_CHECK_FUNCS([atexit gettimeofday getopt_long_only memmove memset mkstemps strcasecmp strchr strdup strerror strncasecmp strrchr strtol strtoul strtoull])