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[Discuss-gnuradio] autoconf 2.64 and mb-gcc

From: Doug Geiger
Subject: [Discuss-gnuradio] autoconf 2.64 and mb-gcc
Date: Tue, 03 Nov 2009 14:03:42 -0500
User-agent: Thunderbird (Windows/20090812)

Just wanted to give other folks a heads up about a regression in autoconf 2.64 affected the configure script for usrp2-firmware. Basically the compiler test now includes stdio.h and fopen in the test program (instead of a simple empty main function). This breaks with my install of mb-gcc. I imagine there are other work-arounds, but I found this one on the autoconf mailing list (http://lists.gnu.org/archive/html/autoconf/2009-09/msg00114.html). Note the work-around has potential side-effects, but I was able to build the firmware without issues. Apparently this regression in autoconf is being addressed upstream. FYI - Ubuntu 9.10 ships with autoconf 2.64, which is how I got bit by this one.

Douglas Geiger
Code 5545
U.S. Naval Research Laboratory
Washington, DC 20375
(202) 767-9048

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