Add variable for passing options to make.

Include a commented-out example of how to use -j to do multicore builds.

buildenv.sh

@@ -14,6 +14,12 @@ else
   IS_CROSS_COMPILE=false
 fi
 
+# Extra arguments we pass to make when building.
+MAKE_OPTS=
+
+# Uncomment to use more threads for faster builds.
+#MAKE_OPTS=-j4
+
 # On OS X, we must set additional options: build 32-bit binaries, and the
 # target API version.
 if [ $(uname) = "Darwin" ]; then

chocpkg/chocpkg

@@ -176,7 +176,7 @@ do_build() {
         error_exit "Failed to configure package $PACKAGE_NAME for build."
     )
 
-    make || (
+    make $MAKE_OPTS || (
         error_exit "Failed to build package $PACKAGE_NAME."
     )
 }