From 55dc22db0547e38c126e1c5de74ede4f6a3e4e6b Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Sun, 23 Jan 2022 21:03:30 -0500
Subject: [PATCH] Add --prefix as a configure task parameter

---
 lib/rscons/cli.rb    |  2 +-
 lib/rscons/script.rb | 13 ++++++++-----
 lib/rscons/task.rb   | 15 +++++++++++----
 3 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/lib/rscons/cli.rb b/lib/rscons/cli.rb
index 3f6e230..07feb1a 100644
--- a/lib/rscons/cli.rb
+++ b/lib/rscons/cli.rb
@@ -167,7 +167,7 @@ EOF
         if task.desc
           usage += %[  #{sprintf("%-27s", name)} #{task.desc}\n]
           task.params.each do |name, param|
-            usage += %[    #{sprintf("%-25s", "--#{name}")} #{param.description}]
+            usage += %[    #{sprintf("%-25s", "--#{param.cli_option}")} #{param.description}\n]
           end
         end
       end
diff --git a/lib/rscons/script.rb b/lib/rscons/script.rb
index 41f05fc..b6ef25a 100644
--- a/lib/rscons/script.rb
+++ b/lib/rscons/script.rb
@@ -41,12 +41,14 @@ module Rscons
       #
       # @param name [String]
       #   Param name.
-      # @param description [String]
-      #   Param description.
       # @param value [String, nil]
       #   Param value.
-      def param(name, description, value)
-        Task::Param.new(name, description, value)
+      # @param cli_option [String]
+      #   Param CLI option text.
+      # @param description [String]
+      #   Param description.
+      def param(name, value, cli_option, description)
+        Task::Param.new(name, value, cli_option, description)
       end
 
       # Return path components from the PATH variable.
@@ -306,7 +308,8 @@ module Rscons
         end
         task("configure",
              desc: "Configure the project",
-             autoconf: false) do
+             autoconf: false,
+             params: [param("prefix", "/usr/local", "prefix=PREFIX", "Set installation prefix (default: /usr/local)")]) do
           Rscons.application.configure
         end
         task("distclean",
diff --git a/lib/rscons/task.rb b/lib/rscons/task.rb
index 760e917..a724121 100644
--- a/lib/rscons/task.rb
+++ b/lib/rscons/task.rb
@@ -56,6 +56,10 @@ module Rscons
       #   Param name.
       attr_reader :name
 
+      # @return [String]
+      #   Param CLI option text.
+      attr_reader :cli_option
+
       # @return [String]
       #   Param description.
       attr_reader :description
@@ -68,14 +72,17 @@ module Rscons
       #
       # @param name [String]
       #   Param name.
-      # @param description [String]
-      #   Param description.
       # @param value [String, nil]
       #   Param value.
-      def initialize(name, description, value)
+      # @param cli_option [String]
+      #   Param CLI option text.
+      # @param description [String]
+      #   Param description.
+      def initialize(name, value, cli_option, description)
         @name = name
-        @description = description
         @value = value
+        @cli_option = cli_option
+        @description = description
       end
 
     end