{"action":"created","comment":{"url":"https://api.github.com/repos/dotnet/cli/pulls/comments/53542086","id":53542086,"diff_hunk":"@@ -17,6 +18,18 @@ public class PrepareTargets\n         [Target(nameof(Init), nameof(RestorePackages))]\n         public static BuildTargetResult Prepare(BuildTargetContext c) => c.Success();\n \n+        [Target(nameof(CheckPrereqCmakePresent), nameof(CheckPlatformDependencies))]\n+        public static BuildTargetResult CheckPrereqs(BuildTargetContext c) => c.Success();\n+\n+        [Target(nameof(CheckCoreclrPlatformDependencies),  nameof(CheckInstallerBuildPlatformDependencies))]\n+        public static BuildTargetResult CheckPlatformDependencies(BuildTargetContext c) => c.Success();\n+\n+        [Target(nameof(CheckUbuntuCoreclrDependencies),  nameof(CheckCentOSCoreclrDependencies))]\n+        public static BuildTargetResult CheckCoreclrPlatformDependencies(BuildTargetContext c) => c.Success();","path":"scripts/dotnet-cli-build/PrepareTargets.cs","position":19,"original_position":19,"commit_id":"71e01d7bd4e10bd77662a558c755474e7d4e519e","original_commit_id":"71e01d7bd4e10bd77662a558c755474e7d4e519e","user":{"login":"piotrpMSFT","id":2379589,"avatar_url":"https://avatars.githubusercontent.com/u/2379589?v=3","gravatar_id":"","url":"https://api.github.com/users/piotrpMSFT","html_url":"https://github.com/piotrpMSFT","followers_url":"https://api.github.com/users/piotrpMSFT/followers","following_url":"https://api.github.com/users/piotrpMSFT/following{/other_user}","gists_url":"https://api.github.com/users/piotrpMSFT/gists{/gist_id}","starred_url":"https://api.github.com/users/piotrpMSFT/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/piotrpMSFT/subscriptions","organizations_url":"https://api.github.com/users/piotrpMSFT/orgs","repos_url":"https://api.github.com/users/piotrpMSFT/repos","events_url":"https://api.github.com/users/piotrpMSFT/events{/privacy}","received_events_url":"https://api.github.com/users/piotrpMSFT/received_events","type":"User","site_admin":false},"body":"What about libssl on Mac?","created_at":"2016-02-20T02:09:11Z","updated_at":"2016-02-20T02:09:11Z","html_url":"https://github.com/dotnet/cli/pull/1504#discussion_r53542086","pull_request_url":"https://api.github.com/repos/dotnet/cli/pulls/1504","_links":{"self":{"href":"https://api.github.com/repos/dotnet/cli/pulls/comments/53542086"},"html":{"href":"https://github.com/dotnet/cli/pull/1504#discussion_r53542086"},"pull_request":{"href":"https://api.github.com/repos/dotnet/cli/pulls/1504"}}},"pull_request":{"url":"https://api.github.com/repos/dotnet/cli/pulls/1504","id":60030801,"html_url":"https://github.com/dotnet/cli/pull/1504","diff_url":"https://github.com/dotnet/cli/pull/1504.diff","patch_url":"https://github.com/dotnet/cli/pull/1504.patch","issue_url":"https://api.github.com/repos/dotnet/cli/issues/1504","number":1504,"state":"open","locked":false,"title":"Build Conditional Targets & Coreclr/Deb Package Dependencies Check","user":{"login":"brthor","id":14280892,"avatar_url":"https://avatars.githubusercontent.com/u/14280892?v=3","gravatar_id":"","url":"https://api.github.com/users/brthor","html_url":"https://github.com/brthor","followers_url":"https://api.github.com/users/brthor/followers","following_url":"https://api.github.com/users/brthor/following{/other_user}","gists_url":"https://api.github.com/users/brthor/gists{/gist_id}","starred_url":"https://api.github.com/users/brthor/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/brthor/subscriptions","organizations_url":"https://api.github.com/users/brthor/orgs","repos_url":"https://api.github.com/users/brthor/repos","events_url":"https://api.github.com/users/brthor/events{/privacy}","received_events_url":"https://api.github.com/users/brthor/received_events","type":"User","site_admin":false},"body":"Fixes #832 \r\nFixes #1503 \r\n\r\nThis PR adds conditional targets to the build framework. Since you can't have delegates in an attribute constructor, this works be defining an abstract base class `TargetConditionAttribute`. The framework looks for these on any targets and will evaluate the method `EvaluateCondition`. If the method returns false, the target is not run.\r\n\r\nI've added two implementations of the TargetConditionAttribute: `BuildArchitectureAttribute` and `BuildPlatformAttribute`. They provide conditionally running a target based on architecture and platform, respectively. 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