Package non-system libraries inside the framework

This automatically copies libssl & libcrypto inside our framework bundle.

Author: tiennou

ObjectiveGitFramework.xcodeproj/project.pbxproj

@@ -1225,6 +1225,7 @@
 				79262F0F13C697BE00A4B1EA /* Copy git2 Headers */,
 				BEF7E4DF1A3A47450035BB8E /* Copy git2 Headers again */,
 				8DC2EF500486A6940098B216 /* Headers */,
+				4D751E9D215D765D003CD3CE /* Package external libraries */,
 			);
 			buildRules = (
 			);
@@ -1356,6 +1357,20 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXShellScriptBuildPhase section */
+		4D751E9D215D765D003CD3CE /* Package external libraries */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputPaths = (
+			);
+			name = "Package external libraries";
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "./script/repackage-dylibs.rb";
+		};
 		6A28265317C69CB400C6A948 /* OpenSSL-iOS */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;

script/repackage-dylibs.rb

@@ -0,0 +1,111 @@
+#!/usr/bin/ruby
+
+# This script looks up an executable's list of shared libraries, copies
+# non-standard ones (ie. anything not under /usr or /System/) into the target's
+# bundle and updates the executable install_name to point to the "packaged"
+# version.
+
+# Usage:
+# Add the script as a Run Script build phase in the target using Xcode.
+
+# FIXMEs:
+# - only handles dylibs
+# - only tested against a framework target
+# - doesn't care about codesigning
+
+
+require 'fileutils'
+require 'ostruct'
+
+def err(msg)
+  puts "error: " + msg
+  exit 1
+end
+
+def warn(msg)
+  puts "warning: " + msg
+end
+
+def note(msg)
+  puts "note: " + msg
+end
+
+envvars = %w(
+  TARGET_BUILD_DIR
+  EXECUTABLE_PATH
+  CURRENT_ARCH
+  FRAMEWORKS_FOLDER_PATH
+)
+
+envvars.each do |var|
+  raise "Must be run in an Xcode Run Phase" unless ENV[var]
+  Kernel.const_set var, ENV[var]
+end
+
+TARGET_EXECUTABLE_PATH = File.join(TARGET_BUILD_DIR, EXECUTABLE_PATH)
+TARGET_FRAMEWORKS_PATH = File.join(TARGET_BUILD_DIR, FRAMEWORKS_FOLDER_PATH)
+
+def extract_link_dependencies
+  deps = `otool -arch #{CURRENT_ARCH} -L #{TARGET_EXECUTABLE_PATH}`
+
+  lines = deps.split("\n").map(&:strip)
+  lines.shift
+  lines.shift
+  lines.map do |dep|
+    path, compat, current = /^(.*) \(compatibility version (.*), current version (.*)\)$/.match(dep)[1..3]
+    err "Failed to parse #{dep}" if path.nil?
+
+    dep = OpenStruct.new
+    dep.install_name = path
+    dep.current_version = current
+    dep.compat_version = compat
+    dep.type = File.extname(path)
+    dep.name = File.basename(path)
+    dep.is_packaged = (dep.install_name =~ /^@rpath/)
+    dep.path = if dep.install_name =~ /^@rpath/
+      File.join(TARGET_FRAMEWORKS_PATH, dep.name)
+    else
+      dep.install_name
+    end
+
+    dep
+  end
+end
+
+def repackage_dependency(dep)
+  return if dep.is_packaged or dep.path =~ /^(\/usr\/lib|\/System\/Library)/
+
+  note "Packaging #{dep.name}…"
+
+  FileUtils.mkdir(TARGET_FRAMEWORKS_PATH) unless Dir.exist?(TARGET_FRAMEWORKS_PATH)
+
+  case dep.type
+  when ".dylib"
+    if File.exist?(File.join(TARGET_FRAMEWORKS_PATH, dep.name))
+      warn "#{dep.path} already in Frameworks directory, removing"
+      FileUtils.rm File.join(TARGET_FRAMEWORKS_PATH, dep.name)
+    end
+
+    note "Copying #{dep[:path]} to TARGET_FRAMEWORKS_PATH"
+    FileUtils.cp dep[:path], TARGET_FRAMEWORKS_PATH
+
+    out = `install_name_tool -change #{dep.path} "@rpath/#{dep.name}" #{TARGET_EXECUTABLE_PATH}`
+    if $? != 0
+      err "install_name_tool failed with error #{$?}:\n#{out}"
+    end
+
+    dep.path = File.join(TARGET_FRAMEWORKS_PATH, dep.name)
+    dep.install_name = "@rpath/#{dep.name}"
+    dep.is_packaged = true
+
+  else
+    warn "Unhandled type #{dep.type} for #{dep.path}, ignoring"
+  end
+end
+
+extract_link_dependencies.each do |dep|
+  repackage_dependency dep
+end
+
+note "Packaging done"
+exit 0