Fix iphone build (#465)

backend.native/konan.properties

@@ -40,10 +40,10 @@ sysRoot.osx-ios = target-sysroot-1-darwin-macos
 targetSysRoot.osx-ios = target-sysroot-2-darwin-ios
 libffiDir.osx-ios = libffi-3.2.1-2-darwin-ios
 llvmHome.osx-ios = clang-llvm-3.9.0-darwin-macos
-llvmLlcFlags.osx-ios = -mtriple=arm64-apple-ios5.0.0 --disable-fp-elim
+llvmLlcFlags.osx-ios = -mtriple=arm64-apple-ios8.0.0 --disable-fp-elim
 linkerKonanFlags.osx-ios = -lc++
 linkerOptimizationFlags.osx-ios = -dead_strip
-osVersionMin.osx-ios = -iphoneos_version_min 5.0.0
+osVersionMin.osx-ios = -iphoneos_version_min 8.0.0
 entrySelector.osx-ios = -alias _Konan_main _main
 dependencies.osx-ios = target-sysroot-1-darwin-macos \
   libffi-3.2.1-2-darwin-ios \

build.gradle

@@ -83,10 +83,11 @@ void setupCompilationFlags() {
             ["host":
                 ["--sysroot=$hostSysrootDir", "-mmacosx-version-min=$minMacOsVersion"], 
              "iphone":
-                ["-stdlib=libc++", "-arch", "arm64", "-isysroot", "$iphoneSysrootDir"],
+                ["-stdlib=libc++", "-arch", "arm64", "-isysroot", "$iphoneSysrootDir",
+                 "-miphoneos-version-min=8.0.0"]
 // TODO: re-enable after simulator sysroot is available in the dependencies
 //             "iphone_sim":
-//                ["-stdlib=libc++", "-isysroot", "$iphoneSimSysrootDir"],
+//                ["-stdlib=libc++", "-isysroot", "$iphoneSimSysrootDir", "-miphoneos-version-min=8.0.0"],
             ]
      }
      ext.targetList = ext.targetArgs.keySet() as List