diff --git a/Sources/XcodeProj/Extensions/Path+Extras.swift b/Sources/XcodeProj/Extensions/Path+Extras.swift
index 4b76668eb..6327ac822 100644
--- a/Sources/XcodeProj/Extensions/Path+Extras.swift
+++ b/Sources/XcodeProj/Extensions/Path+Extras.swift
@@ -6,7 +6,7 @@ import PathKit
 // MARK: - Path extras.
 
 func systemGlob(_ pattern: UnsafePointer<CChar>!, _ flags: Int32, _ errfunc: (@convention(c) (UnsafePointer<CChar>?, Int32) -> Int32)!, _ vector_ptr: UnsafeMutablePointer<glob_t>!) -> Int32 {
-    #if os(macOS)
+    #if os(macOS) || os(iOS)
         return Darwin.glob(pattern, flags, errfunc, vector_ptr)
     #else
         return Glibc.glob(pattern, flags, errfunc, vector_ptr)
diff --git a/Sources/XcodeProj/Extensions/String+md5.swift b/Sources/XcodeProj/Extensions/String+md5.swift
index 1c0afa871..04be85b4c 100644
--- a/Sources/XcodeProj/Extensions/String+md5.swift
+++ b/Sources/XcodeProj/Extensions/String+md5.swift
@@ -31,7 +31,7 @@ extension String {
             return self
         }
         #if canImport(CryptoKit)
-            if #available(OSX 10.15, *) {
+            if #available(OSX 10.15, iOS 13.0, *) {
                 return Insecure.MD5.hash(data: data)
                     .withUnsafeBytes { Array($0) }.hexString
             } else {
diff --git a/Tests/XcodeProjTests/Extensions/XCTestCase+Shell.swift b/Tests/XcodeProjTests/Extensions/XCTestCase+Shell.swift
index 5ea654b4c..277c451bf 100644
--- a/Tests/XcodeProjTests/Extensions/XCTestCase+Shell.swift
+++ b/Tests/XcodeProjTests/Extensions/XCTestCase+Shell.swift
@@ -3,6 +3,7 @@ import Foundation
 /// Returns the output of running `executable` with `args`. Throws an error if the process exits indicating failure.
 @discardableResult
 func checkedOutput(_ executable: String, _ args: [String]) throws -> String? {
+    #if os(macOS)
     let process = Process()
     let output = Pipe()
 
@@ -22,4 +23,7 @@ func checkedOutput(_ executable: String, _ args: [String]) throws -> String? {
     }
 
     return String(data: output.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8)
+    #else
+    return nil
+    #endif
 }