closes https://github.com/assimp/assimp/issues/1335: use correct path

for compilers.

port/iOS/IPHONEOS_ARM64_TOOLCHAIN.cmake

@@ -7,8 +7,8 @@ SET (CMAKE_SYSTEM_PROCESSOR "arm64")
 SET (SDKVER     "7.1")
 SET (DEVROOT    "/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain")
 SET (SDKROOT    "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS${SDKVER}.sdk")
-SET (CC         "${DEVROOT}/usr/bin/llvm-gcc")
-SET (CXX        "${DEVROOT}/usr/bin/llvm-g++")
+SET (CC "${DEVROOT}/usr/bin/clang")
+SET (CXX "${DEVROOT}/usr/bin/clang++")
 
 CMAKE_FORCE_C_COMPILER          (${CC} LLVM)
 CMAKE_FORCE_CXX_COMPILER        (${CXX} LLVM)