From: Martin Mares <mj@ucw.cz>
Date: Tue, 12 Apr 2005 20:57:49 +0000 (+0000)
Subject: Configure: CPU type autodetection.
X-Git-Tag: holmes-import~796
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=5c4102992c8c50d5fc145cdfc157a55cfd7d0d00;p=libucw.git

Configure: CPU type autodetection.
---

diff --git a/lib/autoconf.cfg b/lib/autoconf.cfg
index 7bb50c70..e833836f 100644
--- a/lib/autoconf.cfg
+++ b/lib/autoconf.cfg
@@ -33,11 +33,36 @@ Test("CPU_ARCH", "Checking for CPU architecture", sub {
 				/^([^\t]+)\t+:\s*(.*)$/ and $pc{$1}=$2;
 			}
 			close X;
-			if ($pc{'vendor_id'} eq "AuthenticAMD" && $pc{'cpu family'} >= 6) {
-				$arch = "i686";
+
+			# Try to understand CPU vendor, family and model [inspired by MPlayer's configure script]
+			my $vendor = $pc{'vendor_id'} || "";
+			my $family = $pc{'cpu family'} || 0;
+			my $model  = $pc{'model'} || 0;
+			if ($vendor eq "AuthenticAMD") {
+				if ($family >= 6) {
+					if ($model >= 31) { $arch = "athlon64"; }
+					elsif ($model >= 6) { $arch = "athlon-xp"; }
+					else { $arch = "athlon"; }
+				}
+			} elsif ($vendor eq "GenuineIntel") {
+				# We don't recognize Prescott and Nocona cores yet
+				if ($family >= 15) { $arch = "pentium4"; }
+				elsif ($family >= 6) {
+					if ($model >= 7) { $arch = "pentium3"; }
+					elsif ($model >= 3) { $arch = "pentium2"; }
+				}
+			}
+
+			# No match on vendor, try the family
+			if ($arch eq "") {
+				if ($family >= 6) {
+					$arch = "i686";
+				} elsif ($family >= 3) {
+					$arch = "i${family}86";
+				}
 			}
 			if ($arch ne "") {
-				Log "(according to /proc/cpuinfo) ";
+				Log "(using /proc/cpuinfo) ";
 			} else {
 				Log "(don't understand /proc/cpuinfo) ";
 			}