IOS: Compute MD5 identifiers instead of random

To avoid recompiling the wole project each time we use the create_project tool.

3 files changed, 39 insertions, 8 deletions

diff --git a/devtools/create_project/xcode.cpp b/devtools/create_project/xcode.cpp
index db91bb873d..1239974d11 100644
--- a/devtools/create_project/xcode.cpp
+++ b/devtools/create_project/xcode.cpp
@@ -26,6 +26,12 @@
 #include <fstream>
 #include <algorithm>
 
+#ifdef MACOSX
+#include <sstream>
+#include <iomanip>
+#include <CommonCrypto/CommonCrypto.h>
+#endif
+
 namespace CreateProjectTool {
 
 #define DEBUG_XCODE_HASH 0
@@ -1008,7 +1014,6 @@ void XcodeProvider::setupDefines(const BuildSetup &setup) {
 // Object hash
 //////////////////////////////////////////////////////////////////////////
 
-// TODO use md5 to compute a file hash (and fall back to standard key generation if not passed a file)
 std::string XcodeProvider::getHash(std::string key) {
 
 #if DEBUG_XCODE_HASH
@@ -1020,7 +1025,12 @@ std::string XcodeProvider::getHash(std::string key) {
 		return hashIterator->second;
 
 	// Generate a new key from the file hash and insert it into the dictionary
+#ifdef MACOSX
+	std::string hash = md5(key);
+#else
 	std::string hash = newHash();
+#endif
+
 	_hashDictionnary[key] = hash;
 
 	return hash;
@@ -1029,6 +1039,19 @@ std::string XcodeProvider::getHash(std::string key) {
 
 bool isSeparator (char s) { return (s == '-'); }
 
+#ifdef MACOSX
+std::string XcodeProvider::md5(std::string key) {
+	unsigned char md[CC_MD5_DIGEST_LENGTH];
+	CC_MD5(key.c_str(), (CC_LONG) key.length(), md);
+	std::stringstream stream;
+	stream << std::hex << std::setfill('0') << std::setw(2);
+	for (int i=0; i<CC_MD5_DIGEST_LENGTH; i++) {
+		stream << (unsigned int) md[i];
+	}
+	return stream.str();
+}
+#endif
+
 std::string XcodeProvider::newHash() const {
 	std::string hash = createUUID();
 
diff --git a/devtools/create_project/xcode.h b/devtools/create_project/xcode.h
index c4cb035b98..c97e31064b 100644
--- a/devtools/create_project/xcode.h
+++ b/devtools/create_project/xcode.h
@@ -340,6 +340,9 @@ private:
 
 	// Hash generation
 	std::string getHash(std::string key);
+#ifdef MACOSX
+	std::string md5(std::string key);
+#endif
 	std::string newHash() const;
 
 	// Output
diff --git a/devtools/create_project/xcode/create_project.xcodeproj/project.pbxproj b/devtools/create_project/xcode/create_project.xcodeproj/project.pbxproj
index 83cd0c327b..4f06a5e469 100644
--- a/devtools/create_project/xcode/create_project.xcodeproj/project.pbxproj
+++ b/devtools/create_project/xcode/create_project.xcodeproj/project.pbxproj
@@ -141,6 +141,7 @@
 		F9A66C1E1396D36100CEE494 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
+				LastUpgradeCheck = 0720;
 			};
 			buildConfigurationList = F9A66C211396D36100CEE494 /* Build configuration list for PBXProject "create_project" */;
 			compatibilityVersion = "Xcode 3.2";
@@ -179,12 +180,14 @@
 		F9A66C2E1396D36100CEE494 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
+				ENABLE_TESTABILITY = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_OPTIMIZATION_LEVEL = 0;
-				GCC_PREPROCESSOR_DEFINITIONS = DEBUG;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					POSIX,
+					MACOSX,
+				);
 				GCC_SYMBOLS_PRIVATE_EXTERN = NO;
-				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
@@ -197,9 +200,11 @@
 		F9A66C2F1396D36100CEE494 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				ARCHS = "$(ARCHS_STANDARD_32_64_BIT)";
 				GCC_C_LANGUAGE_STANDARD = gnu99;
-				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					POSIX,
+					MACOSX,
+				);
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
@@ -216,8 +221,8 @@
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
 				GCC_PREPROCESSOR_DEFINITIONS = (
+					"$(inherited)",
 					DEBUG,
-					POSIX,
 				);
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
@@ -230,7 +235,7 @@
 				COPY_PHASE_STRIP = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				GCC_ENABLE_OBJC_EXCEPTIONS = YES;
-				GCC_PREPROCESSOR_DEFINITIONS = POSIX;
+				GCC_PREPROCESSOR_DEFINITIONS = "$(inherited)";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 			};
 			name = Release;