linux-pcc: make it more robust and recognize KERNEL_BITS variable.

config

@@ -587,13 +587,20 @@ case "$GUESSOS" in
 	fi
 	;;
   ppc64-*-linux2)
+	if [ -z "$KERNEL_BITS" ]; then
 	    echo "WARNING! If you wish to build 64-bit library, then you have to"
 	    echo "         invoke './Configure linux-ppc64' *manually*."
 	    if [ "$TEST" = "false" -a -t 1 ]; then
 		echo "         You have about 5 seconds to press Ctrl-C to abort."
 		(trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
 	    fi
+	fi
+	if [ "$KERNEL_BITS" = "64" ]; then
+	    OUT="linux-ppc64"
+	else
 	    OUT="linux-ppc"
+	    (echo "__LP64__" | gcc -E -x c - 2>/dev/null | grep "^__LP64__" 2>&1 > /dev/null) || options="$options -m32"
+	fi
 	;;
   ppc-*-linux2) OUT="linux-ppc" ;;
   mips64*-*-linux2)

crypto/ppccap.c

@@ -4,6 +4,9 @@
 #include <setjmp.h>
 #include <signal.h>
 #include <unistd.h>
+#ifdef __linux
+#include <sys/utsname.h>
+#endif
 #include <crypto.h>
 #include <openssl/bn.h>
 
@@ -102,6 +105,10 @@ void OPENSSL_cpuid_setup(void)
 
 	if (sizeof(size_t)==4)
 		{
+#ifdef __linux
+		struct utsname uts;
+		if (uname(&uts)==0 && strcmp(uts.machine,"ppc64")==0)
+#endif
 		if (sigsetjmp(ill_jmp,1) == 0)
 			{
 			OPENSSL_ppc64_probe();