INSTALL: fix architecture detection on Solaris.
And uses gcc for i386 and x86_64.
LGTM=rsc
R=rsc
https://codereview.appspot.com/69860044
diff --git a/INSTALL b/INSTALL
index f8b8587..5b86645 100755
--- a/INSTALL
+++ b/INSTALL
@@ -78,6 +78,27 @@
rm -f ./a.out
fi
+if [ `uname` = SunOS ]; then
+ # On Solaris x86, uname -p cannot be trusted.
+ echo "* Running on Solaris: checking architecture..."
+ case "$(isainfo -n)" in
+ *amd64*)
+ echo " x86-64 found."
+ echo "OBJTYPE=x86_64" >>$PLAN9/config
+ echo "CC9=gcc" >>$PLAN9/config # defaults to gcc on Solaris/amd64
+ ;;
+ *i386*)
+ echo " i386 found."
+ echo "OBJTYPE=386" >>$PLAN9/config
+ echo "CC9=gcc" >>$PLAN9/config # defaults to gcc on Solaris/i386
+ ;;
+ *sparc*)
+ echo " Sparc found."
+ echo "OBJTYPE=sparc" >>$PLAN9/config
+ ;;
+ esac
+fi
+
if [ `uname` = Darwin ]; then
# On Darwin, uname -m -p cannot be trusted.
echo "* Running on Darwin: checking architecture..."
