Mac: Build wx3.1.1 libs for Audacity.

Sets the i386 option and installs where XCode will fetch it from.

mac/scripts/build_wxwidgets2

@@ -0,0 +1,49 @@
+#!/bin/sh
+#
+# You can use this to build wxWidgets.  Just run it from within the root of the
+# wxWidgets source tree like so:
+#
+#  sudo <path to this script>/build_wxwidgets
+#
+
+
+
+# Build a specific configuration
+function bld
+{
+   rm -rf "${1}"
+   mkdir -p "${1}"
+   pushd "${1}"
+   shift
+
+   ../configure --disable-accessibility \
+                --enable-macosx-arch=i386 \
+                --with-expat=builtin \
+                --with-zlib=builtin \
+                --with-regex=builtin \
+                --enable-universal_binary=no \
+                --enable-unicode=yes \
+                --enable-webkit=no \
+                --with-macosx-version-min=10.10 \
+                ${@}
+   export LDFLAGS="${LDFLAGS1}"
+   xcrun make -j 4
+   export LDFLAGS=""
+   popd
+}
+
+# Install a specific configuration
+function inst
+{
+   pushd "${1}"
+   xcrun make install
+   popd
+}
+
+# Build all configurations
+bld bld_debug --enable-debug=yes --enable-shared=yes --with-flavour=debug
+bld bld_release --enable-debug=no --enable-shared=yes --with-flavour=release
+
+# Install all configurations
+inst bld_debug
+inst bld_release