From ff39575dc0cb9ee6408d90b4d9f396edd3f16874 Mon Sep 17 00:00:00 2001 From: Cary R Date: Thu, 8 Oct 2009 13:06:59 -0700 Subject: [PATCH] We must have autoconf version 2.60 or later. When AC_PROG_CC_C99 was added recently we created an implicit requirement for autoconf version 2.60. This patch makes that implicit requirement and explicit requirement. --- configure.in | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/configure.in b/configure.in index 4d14fcac3..5def57326 100644 --- a/configure.in +++ b/configure.in @@ -11,6 +11,12 @@ AC_CONFIG_HEADER(tgt-vhdl/vhdl_config.h) AC_CANONICAL_HOST dnl Checks for programs. AC_PROG_CC +# AC_PROG_CC_C99 is only available in autoconf version 2.60 and later. +# If you must use an older version then comment out the following two +# lines, but be warned that there could be issues with finding the +# nan(), etc. functions. It is really best to upgrade to a supported +# version of autoconf. +AC_PREREQ([2.60]) AC_PROG_CC_C99 AC_PROG_CXX AC_PROG_RANLIB