Source code for pbrt, the renderer described in the third edition of "Physically Based Rendering: From Theory To Implementation", by Matt Pharr, Wenzel Jakob, and Greg Humphreys.
the build error message is like this, does anyone know the reason?
error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfBoxAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfCRgbaFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfChannelList.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfChannelListAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfFloatAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfFrameBuffer.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfHeader.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfIO.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfInputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfIntAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfLineOrderAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfMatrixAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfOpaqueAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfOutputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfRgbaFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfStringAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfVecAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfHuf.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfThreading.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfWav.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfLut.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfCompressor.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfRleCompressor.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfZipCompressor.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfPizCompressor.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfMisc.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfCompressionAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDoubleAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfConvert.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfPreviewImage.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfPreviewImageAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfVersion.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfChromaticities.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfChromaticitiesAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfKeyCode.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfKeyCodeAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTimeCode.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTimeCodeAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfRational.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfRationalAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfFramesPerSecond.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfStandardAttributes.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfStdIO.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfEnvmap.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfEnvmapAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfScanLineInputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTiledInputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTiledMisc.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTiledOutputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTiledRgbaFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTileDescriptionAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTileOffsets.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfRgbaYca.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfPxr24Compressor.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTestFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfStringVectorAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfMultiView.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfAcesFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfMultiPartOutputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfGenericOutputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfOutputPartData.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfMultiPartInputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfGenericInputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfPartType.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfInputPartData.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfOutputPart.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTiledOutputPart.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfInputPart.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfTiledInputPart.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepScanLineInputPart.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepScanLineOutputPart.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepScanLineInputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepScanLineOutputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepTiledInputPart.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepTiledOutputPart.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepTiledInputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepTiledOutputFile.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepFrameBuffer.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepCompositing.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfCompositeDeepScanLine.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfDeepImageStateAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfFastHuf.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfFloatVectorAttribute.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfRle.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfSystemSpecific.o (No such file or directory) error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: /Users/wangyan/Projects/pbrt-v3/build_xcode/src/ext/openexr/OpenEXR/IlmImf/PBRT-V3.build/Debug/IlmImf-obj.build/Objects-normal/arm64/ImfZip.o (No such file or directory)
the build error message is like this, does anyone know the reason?