Add SPM support with XCF

Package.swift

@@ -10,12 +10,13 @@ let package = Package(
             name: "themis",
             targets: ["themis"]),
     ],
+    // OpenSSL XCF is statically linked to Themis XCF, so no need to have it as a dependency
     dependencies: [],
     targets: [
-        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
-        // Targets can depend on other targets in this package, and on products in packages this package depends on.
         .binaryTarget(name: "themis",
+                      // update version in URL path
                       url: "https://github.com/julepka/themis/releases/download/2.2.1/themis.xcframework.zip",
+                      // Run from package directory:
                       // $swift package compute-checksum output/themis.xcframework.zip
                       checksum: "b4a8d8868cbd09499d75a10315d1231281d40dee11d1fe549cf4893967f3ee38"),
 

Themis.xcodeproj/project.pbxproj

@@ -1893,8 +1893,8 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/julepka/openssl-apple";
 			requirement = {
-				kind = upToNextMajorVersion;
-				minimumVersion = 1.1.1080202;
+				kind = exactVersion;
+				version = 1.1.1080202;
 			};
 		};
 /* End XCRemoteSwiftPackageReference section */

scripts/create_xcframeworks.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+#
+# Shebang to explicitly use bash and not break on macOS boxes with zsh as default shell.
+#
+# After that you usually describe what this script is for and how to use it. In particular,
+# what it expects the current directory to be. (That's more important if it's it "scripts".)
+
+set -eu # common flags to ensure that the shell does not ignore failures
+
+BUILD_PATH=build
+output_dir=$BUILD_PATH/xcf_output
+
+cd ..
+repo_root_path=$(pwd)
+
+mkdir $BUILD_PATH
+mkdir $output_dir
+mkdir $output_dir/archives
+mkdir $output_dir/iphoneos
+mkdir $output_dir/macosx
+
+xcodebuild archive \
+-scheme "Themis (iOS)" \
+-destination="iOS" \
+-archivePath $output_dir/archives/ios.xcarchive \
+-derivedDataPath $output_dir/iphoneos \
+-sdk iphoneos \
+SKIP_INSTALL=NO \
+BUILD_LIBRARIES_FOR_DISTRIBUTION=YES
+
+xcodebuild archive \
+-scheme "Themis (iOS)" \
+-destination="iOS Simulator" \
+-archivePath $output_dir/archives/iossimulator.xcarchive \
+-derivedDataPath $output_dir/iphoneos \
+-sdk iphonesimulator \
+SKIP_INSTALL=NO \
+BUILD_LIBRARIES_FOR_DISTRIBUTION=YES
+
+xcodebuild archive \
+-scheme "Themis (macOS)" \
+-destination="macOS" \
+-archivePath $output_dir/archives/macosx.xcarchive \
+-derivedDataPath $output_dir/macosx \
+-sdk macosx \
+SKIP_INSTALL=NO \
+BUILD_LIBRARIES_FOR_DISTRIBUTION=YES
+
+xcodebuild -create-xcframework \
+-framework $output_dir/archives/ios.xcarchive/Products/Library/Frameworks/themis.framework \
+-framework $output_dir/archives/iossimulator.xcarchive/Products/Library/Frameworks/themis.framework \
+-framework $output_dir/archives/macosx.xcarchive/Products/Library/Frameworks/themis.framework \
+-output $output_dir/themis.xcframework
+
+rm -rf $output_dir/archives
+rm -rf $output_dir/iphoneos
+rm -rf $output_dir/macosx
+
+cd $output_dir
+zip -r themis.xcframework.zip themis.xcframework
+
+rm -rf themis.xcframework
+
+cd "$repo_root_path"
+echo "XCF Checksum:"
+swift package compute-checksum $output_dir/themis.xcframework.zip