Error building iOS binary

[simc]

I'm getting the following error when I try to build boring for iOS. Do you have an idea what went wrong?

Error

...
Compiling boring-sys v1.1.0
error: failed to run custom build command for `boring-sys v1.1.0`

Caused by:
  process didn't exit successfully: `/Users/runner/work/isar-core/isar-core/dart-ffi/target/release/build/boring-sys-a0cbecad694041d4/build-script-build` (exit code: 101)
  --- stdout
  running: "xcrun" "--show-sdk-path" "--sdk" "iphoneos"
  exit code: 0
  running: "xcrun" "--show-sdk-path" "--sdk" "iphoneos"
  exit code: 0
  running: "cmake" "/Users/runner/.cargo/git/checkouts/boring-dfc6e3788abbaf96/80c04df/boring-sys/deps/boringssl" "-DCMAKE_OSX_ARCHITECTURES=arm64" "-DCMAKE_OSX_SYSROOT=iphoneos" "-DCMAKE_ASM_FLAGS=-fembed-bitcode " "-DCMAKE_INSTALL_PREFIX=/Users/runner/work/isar-core/isar-core/dart-ffi/target/aarch64-apple-ios/release/build/boring-sys-9d553a3ff05eb868/out" "-DCMAKE_C_FLAGS= -fembed-bitcode  -fPIC --target=aarch64-apple-ios -arch arm64 -miphoneos-version-min=7.0 -isysroot /Applications/Xcode_12.4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS14.4.sdk -fembed-bitcode" "-DCMAKE_C_COMPILER=/usr/bin/clang" "-DCMAKE_CXX_FLAGS= -fPIC --target=aarch64-apple-ios -arch arm64 -miphoneos-version-min=7.0 -isysroot /Applications/Xcode_12.4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS14.4.sdk -fembed-bitcode" "-DCMAKE_CXX_COMPILER=/usr/bin/clang++" "-DCMAKE_ASM_COMPILER=/usr/bin/clang" "-DCMAKE_BUILD_TYPE=Release"
  -- The C compiler identification is AppleClang 12.0.0.12000032
  -- The CXX compiler identification is AppleClang 12.0.0.12000032
  -- Detecting C compiler ABI info
  -- Detecting C compiler ABI info - done
  -- Check for working C compiler: /usr/bin/clang - skipped
  -- Detecting C compile features
  -- Detecting C compile features - done
  -- Detecting CXX compiler ABI info
  -- Detecting CXX compiler ABI info - done
  -- Check for working CXX compiler: /usr/bin/clang++ - skipped
  -- Detecting CXX compile features
  -- Detecting CXX compile features - done
  -- The ASM compiler identification is Clang
  -- Found assembler: /usr/bin/clang
  -- Configuring done
  -- Generating done
  -- Build files have been written to: /Users/runner/work/isar-core/isar-core/dart-ffi/target/aarch64-apple-ios/release/build/boring-sys-9d553a3ff05eb868/out/build
  running: "cmake" "--build" "." "--target" "bssl" "--config" "Release" "--"
  Scanning dependencies of target ssl
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  Scanning dependencies of target crypto
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  cargo:root=/Users/runner/work/isar-core/isar-core/dart-ffi/target/aarch64-apple-ios/release/build/boring-sys-9d553a3ff05eb868/out
  cargo:rustc-link-search=native=/Users/runner/work/isar-core/isar-core/dart-ffi/target/aarch64-apple-ios/release/build/boring-sys-9d553a3ff05eb868/out/build/
  cargo:rustc-link-lib=static=crypto
  cargo:rustc-link-lib=static=ssl
  cargo:rustc-cdylib-link-arg=-Wl,-undefined,dynamic_lookup

  --- stderr
  ios arch=aarch64 add CMAKE_OSX_ARCHITECTURES=arm64
  ios arch=aarch64 add CMAKE_OSX_SYSROOT=iphoneos
  ld: warning: -headerpad_max_install_names is ignored when used with -bitcode_bundle (Xcode setting ENABLE_BITCODE=YES)
  ld: warning: object file (libcrypto.a(aesv8-armx64.S.o)) was built for newer iOS version (14.4) than being linked (7.0)
  ld: warning: object file (libcrypto.a(armv8-mont.S.o)) was built for newer iOS version (14.4) than being linked (7.0)
  ld: warning: object file (libcrypto.a(ghashv8-armx64.S.o)) was built for newer iOS version (14.4) than being linked (7.0)
  ld: warning: object file (libcrypto.a(sha1-armv8.S.o)) was built for newer iOS version (14.4) than being linked (7.0)
  ld: warning: object file (libcrypto.a(sha256-armv8.S.o)) was built for newer iOS version (14.4) than being linked (7.0)
  ld: warning: object file (libcrypto.a(sha512-armv8.S.o)) was built for newer iOS version (14.4) than being linked (7.0)
  ld: warning: object file (libcrypto.a(chacha-armv8.S.o)) was built for newer iOS version (14.4) than being linked (7.0)
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/cdefs.h:807:2: error: Unsupported architecture
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/machine/_types.h:34:2: error: architecture not supported
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:55:9: error: unknown type name '__int64_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:56:9: error: unknown type name '__int32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:57:9: error: unknown type name '__int32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:60:9: error: unknown type name '__uint32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:61:9: error: unknown type name '__uint32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:62:9: error: unknown type name '__uint64_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:68:9: error: unknown type name '__darwin_natural_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:70:9: error: unknown type name '__uint16_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:71:9: error: unknown type name '__int64_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:72:9: error: unknown type name '__int32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:73:9: error: unknown type name '__uint32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:74:9: error: unknown type name '__int32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:75:9: error: unknown type name '__uint32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:76:9: error: unknown type name '__uint32_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/machine/types.h:37:2: error: architecture not supported
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types/_intptr_t.h:32:9: error: unknown type name '__darwin_intptr_t'
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/machine/endian.h:37:2: error: architecture not supported
  fatal error: too many errors emitted, stopping now [-ferror-limit=]
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/cdefs.h:807:2: error: Unsupported architecture, err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/machine/_types.h:34:2: error: architecture not supported, err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:55:9: error: unknown type name '__int64_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:56:9: error: unknown type name '__int32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:57:9: error: unknown type name '__int32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:60:9: error: unknown type name '__uint32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:61:9: error: unknown type name '__uint32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:62:9: error: unknown type name '__uint64_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:68:9: error: unknown type name '__darwin_natural_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:70:9: error: unknown type name '__uint16_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:71:9: error: unknown type name '__int64_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:72:9: error: unknown type name '__int32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:73:9: error: unknown type name '__uint32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:74:9: error: unknown type name '__int32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:75:9: error: unknown type name '__uint32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types.h:76:9: error: unknown type name '__uint32_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/machine/types.h:37:2: error: architecture not supported, err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/_types/_intptr_t.h:32:9: error: unknown type name '__darwin_intptr_t', err: true
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/machine/endian.h:37:2: error: architecture not supported, err: true
  fatal error: too many errors emitted, stopping now [-ferror-limit=], err: true
  thread 'main' panicked at 'Unable to generate bindings: ()', /Users/runner/.cargo/git/checkouts/boring-dfc6e3788abbaf96/80c04df/boring-sys/build.rs:249:39
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
[ERROR cargo_lipo] Failed to build "isar-core-dart-ffi" for "aarch64-apple-ios": Executing "/Users/runner/.rustup/toolchains/nightly-x86_64-apple-darwin/bin/cargo" "--color" "auto" "build" "-p" "isar-core-dart-ffi" "--target" "aarch64-apple-ios" "--release" "--lib" finished with error status: exit code: 101
mv: rename target/universal/release/libisar_core_dart_ffi.a to libisar_ios.a: No such file or directory

The Android and Linux build work fine 🤔

[inikulin]

It seems like it tries to use x86 headers when built for ios arm. Also, this looks suspicious: ld: warning: object file (libcrypto.a(aesv8-armx64.S.o)) was built for newer iOS version (14.4) than being linked (7.0)

@ghedo could you chime in? Have you seen something like this with quiche?

[simc]

Here is the failing workflow: https://github.com/isar/isar-core/runs/2173692157?check_suite_focus=true

Any hint how to solve this would be greatly appreciated 👍

[jyn514]

@inikulin why do you say it's compiling for x86? The relevant error I see is

  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/sys/cdefs.h:807:2: error: Unsupported architecture
  /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/machine/_types.h:34:2: error: architecture not supported

and combined with the 7.0 warning that makes me think it's just trying to target too old a version of iOS.

[ilammy]

It seems like it tries to use x86 headers when built for ios arm.

Indeed, this is the case. bindgen needs to be told to use iOS sysroot instead of the host macOS one. It's also complicated with that builds for simulators have a different sysroot.

I almost got it working, stand by for a PR.