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Re: [Qemu-devel] [PATCH 08/39] provide portable sizeof(long) test

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH 08/39] provide portable sizeof(long) test
Date: Tue, 12 Oct 2010 16:31:05 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100907 Fedora/3.1.3-1.fc13 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.3 
On 10/12/2010 03:47 PM, malc wrote:

  # host long bits test
-hostlongbits="32"
-case "$cpu" in
-  x86_64|alpha|ia64|sparc64|ppc64|s390x)
-    hostlongbits=64
-  ;;
-esac
+cat>  $TMPC<<  EOF
+int sizeof_long_is_8[sizeof(long) == 8 ? 1 : -1];
+EOF
+if compile_object; then
+hostlongbits=64
+else
+hostlongbits=32
+fi


This is wrong.


Care to expand?

$ grep LONG +build*/config-host.h
+build-32/config-host.h:#define HOST_LONG_BITS 32
+build-64/config-host.h:#define HOST_LONG_BITS 64

Paolo
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