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From: | Paolo Bonzini |
Subject: | Re: AC_PROG_CC fails when target C library is missing fopen |
Date: | Tue, 11 Aug 2009 00:27:18 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b3pre) Gecko/20090513 Fedora/3.0-2.3.beta2.fc11 Lightning/1.0pre Thunderbird/3.0b2 |
On 08/11/2009 12:11 AM, Ralf Wildenhues wrote:
I don't see in this discussion where the main argument to switch to using fopen is addressed: <http://thread.gmane.org/gmane.comp.sysutils.autoconf.patches/6656> IOW, how do you prevent AC_COMPUTE_INT and friends from getting you wrong answers on your system (if you happen to have a simulator around)?
In my patch I use an empty source code file to determine the default file name. Then I use one with fopen to determine if the user is cross-compiling; this would fail for RTEMS so that the preprocessor-only AC_COMPUTE_INT is used.
Paolo
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