diff --git a/Package.resolved b/Package.resolved
index efa056b4..c1e74864 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -24,8 +24,8 @@
         "repositoryURL": "https://github.com/tomlokhorst/XcodeEdit",
         "state": {
           "branch": null,
-          "revision": "1055ca180cbea0405b2b98707e79872772b7fe7b",
-          "version": "2.5.0"
+          "revision": "90fd97fd8b298319edbb5093f5825b8b44e48680",
+          "version": "2.5.2"
         }
       }
     ]
diff --git a/Package.swift b/Package.swift
index 3fa567a8..79b45221 100644
--- a/Package.swift
+++ b/Package.swift
@@ -5,7 +5,7 @@ let package = Package(
   name: "rswift",
   dependencies: [
     .package(url: "https://github.com/kylef/Commander.git", from: "0.8.0"),
-    .package(url: "https://github.com/tomlokhorst/XcodeEdit", from: "2.4.1")
+    .package(url: "https://github.com/tomlokhorst/XcodeEdit", from: "2.5.0")
   ],
   targets: [
     .target(
diff --git a/Podfile.lock b/Podfile.lock
index e130c58b..0f5b06ad 100644
--- a/Podfile.lock
+++ b/Podfile.lock
@@ -1,5 +1,5 @@
 PODS:
-  - R.swift.Library (5.0.0.alpha.2)
+  - R.swift.Library (5.0.0)
   - SWRevealViewController (2.3.0)
 
 DEPENDENCIES:
@@ -16,11 +16,11 @@ EXTERNAL SOURCES:
 
 CHECKOUT OPTIONS:
   R.swift.Library:
-    :commit: cb11aec9943393c9903b3623068207b26c9e246b
+    :commit: 03b3f069f43cab162eaba6e395fd293b6787e022
     :git: https://github.com/mac-cain13/R.swift.Library.git
 
 SPEC CHECKSUMS:
-  R.swift.Library: 3c21b823839bf5a6769dc7f96cb44479dab51b1b
+  R.swift.Library: 0bf390e729bc10bb2c9e4fb78bd043164a7be4ff
   SWRevealViewController: 6d3fd97f70112fd7cef9de14df4260eacce4c63a
 
 PODFILE CHECKSUM: dcf609a63a9cb222b7167b110c27de036120bae0
diff --git a/README.md b/README.md
index d41b6fec..a6bd8093 100644
--- a/README.md
+++ b/README.md
@@ -124,7 +124,7 @@ _Tip:_ Add the `*.generated.swift` pattern to your `.gitignore` file to prevent
 R.swift is built using [Swift Package Manager (SPM)](https://github.com/apple/swift-package-manager).
 
 1. Check out the code
-2. Run `swift build -c release -Xswiftc -static-stdlib` from the root directory
+2. Run `swift build -c release -Xswiftc -static-stdlib -Xswiftc "-target" -Xswiftc "x86_64-apple-macosx10.11"` from the root directory
 3. Follow the manual installation steps with the binary you now have
 
 For developing on R.swift in Xcode, run `swift package generate-xcodeproj --xcconfig-overrides RswiftConfig.xcconfig`.
diff --git a/RswiftConfig.xcconfig b/RswiftConfig.xcconfig
index 4bbe7f6a..bb1a8145 100644
--- a/RswiftConfig.xcconfig
+++ b/RswiftConfig.xcconfig
@@ -14,3 +14,6 @@ CONFIGURATION_BUILD_DIR = $(SRCROOT)/build/$CONFIGURATION
 
 // The final product executables and other build products go here
 BUILT_PRODUCTS_DIR = $(SRCROOT)/build/$CONFIGURATION
+
+// Mac OS SDK 10.11
+MACOSX_DEPLOYMENT_TARGET = 10.11
diff --git a/Sources/RswiftCore/EnvironmentValidation.swift b/Sources/RswiftCore/EnvironmentValidation.swift
index 4c37cdcb..ef3ae69d 100644
--- a/Sources/RswiftCore/EnvironmentValidation.swift
+++ b/Sources/RswiftCore/EnvironmentValidation.swift
@@ -14,6 +14,7 @@ public func validateRswiftEnvironment(
   scriptOutputFiles: [String],
   lastRunURL: URL,
   podsRoot: String?,
+  podsTargetSrcroot: String?,
   commandLineArguments: [String]) -> [String]
 {
   var errors: [String] = []
@@ -24,9 +25,11 @@ public func validateRswiftEnvironment(
     var error = "Output path must specify a file, it should not be a directory."
     if FileManager.default.directoryExists(atPath: outputURL.path) {
       let rswiftGeneratedFile = outputURL.appendingPathComponent("R.generated.swift").path
+
       let commandParts = commandLineArguments
-        .map { $0.replacingOccurrences(of: podsRoot ?? "", with: "$PODS_ROOT") }
         .map { $0.replacingOccurrences(of: outputURL.path, with: rswiftGeneratedFile) }
+        .map { $0.replacingOccurrences(of: podsTargetSrcroot ?? "", with: "$PODS_TARGET_SRCROOT") }
+        .map { $0.replacingOccurrences(of: podsRoot ?? "", with: "$PODS_ROOT") }
         .map { $0.replacingOccurrences(of: sourceRootPath, with: "$SRCROOT") }
         .map { $0.contains(" ") ? "\"\($0)\"" : $0 }
 
@@ -38,12 +41,16 @@ public func validateRswiftEnvironment(
     errors.append(error)
   }
 
-  if !scriptInputFiles.contains(lastRunURL.path) {
+  let scriptInputPaths = scriptInputFiles.map { URL(fileURLWithPath: $0).standardized.path }
+  if !scriptInputPaths.contains(lastRunURL.standardized.path) {
     errors.append("Build phase Intput Files does not contain '$TEMP_DIR/\(lastRunURL.lastPathComponent)'.")
   }
 
-  if !scriptOutputFiles.contains(outputURL.path) {
-    let path = outputFileForError.replacingOccurrences(of: sourceRootPath, with: "$SRCROOT")
+  let scriptOutputPaths = scriptOutputFiles.map { URL(fileURLWithPath: $0).standardized.path }
+  if !scriptOutputPaths.contains(outputURL.standardized.path) && !scriptOutputPaths.contains(outputFileForError) {
+    let path = outputFileForError
+      .replacingOccurrences(of: podsTargetSrcroot ?? "", with: "$PODS_TARGET_SRCROOT")
+      .replacingOccurrences(of: sourceRootPath, with: "$SRCROOT")
     errors.append("Build phase Output Files do not contain '\(path)'.")
   }
 
diff --git a/Sources/rswift/main.swift b/Sources/rswift/main.swift
index b59aeef8..7c7cc13a 100644
--- a/Sources/rswift/main.swift
+++ b/Sources/rswift/main.swift
@@ -139,6 +139,7 @@ let generate = command(
     scriptOutputFiles: scriptOutputFiles,
     lastRunURL: lastRunURL,
     podsRoot: processInfo.environment["PODS_ROOT"],
+    podsTargetSrcroot: processInfo.environment["PODS_TARGET_SRCROOT"],
     commandLineArguments: CommandLine.arguments)
   guard errors.isEmpty else {
     for error in errors {