dnl Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.3)dnl
+AC_PREREQ(2.12.1)dnl
AC_INIT(mmalloc.c)
-CC=${CC-cc}
AC_PROG_CC
AC_PROG_INSTALL
-AC_PROG_RANLIB
+AC_CHECK_TOOL(AR, ar)
+AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_FUNC_MMAP
-AC_HEADER_STDC
-AC_CHECK_HEADER(stddef.h)
+AC_CHECK_HEADERS(limits.h stddef.h)
AC_OUTPUT(Makefile)