actually support bitcode

Author: morganchen12

FirebaseUI.xcodeproj/project.pbxproj

@@ -1538,6 +1538,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				BITCODE_GENERATION_MODE = marker;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -1575,6 +1576,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
+				OTHER_CFLAGS = "";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
@@ -1586,6 +1588,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				BITCODE_GENERATION_MODE = bitcode;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
@@ -1616,6 +1619,7 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
+				OTHER_CFLAGS = "";
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;

build.swift

@@ -114,7 +114,7 @@ let builds = sdks.flatMap { sdk in
       "-scheme"         : scheme,
       "-configuration"  : "Release",
       "-sdk"            : sdk,
-      "-derivedDataPath": DerivedDataDir
+      "-derivedDataPath": DerivedDataDir,
     ])
   }
 }