Current master does not build on MacOS

[mouse07410]

Config:
MacOS Sequoia 15.7.2, Xcode-26.1. Current master.

Problem: dependency safe-oqs-sys seems unable to locate system/SDK header files.

$ export C_INCLUDE_PATH=/opt/local/include:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk:/usr/local/include:.
$ export C_INCLUDE_DIR=/opt/local/include:/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk:/usr/local/include:.
$ cargo build && cargo build --release && cargo test --release
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
    Finished `release` profile [optimized] target(s) in 0.16s
   Compiling safe-oqs-sys v0.10.0+liboqs-0.10.1
error: failed to run custom build command for `safe-oqs-sys v0.10.0+liboqs-0.10.1`
note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.

Caused by:
  process didn't exit successfully: `/Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-97b4142a9a4e1ded/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-env-changed=LIBOQS_NO_VENDOR
  cargo:rerun-if-env-changed=LIBOQS_NO_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_x86_64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_x86_64_apple_darwin
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG
  cargo:rerun-if-env-changed=LIBOQS_STATIC
  cargo:rerun-if-env-changed=LIBOQS_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_STATIC
  cargo:rerun-if-env-changed=PKG_CONFIG_ALL_DYNAMIC
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64_apple_darwin
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64_apple_darwin
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64_apple_darwin
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR
  CMAKE_TOOLCHAIN_FILE_x86_64-apple-darwin = None
  CMAKE_TOOLCHAIN_FILE_x86_64_apple_darwin = None
  HOST_CMAKE_TOOLCHAIN_FILE = None
  CMAKE_TOOLCHAIN_FILE = None
  CMAKE_GENERATOR_x86_64-apple-darwin = None
  CMAKE_GENERATOR_x86_64_apple_darwin = None
  HOST_CMAKE_GENERATOR = None
  CMAKE_GENERATOR = None
  CMAKE_PREFIX_PATH_x86_64-apple-darwin = None
  CMAKE_PREFIX_PATH_x86_64_apple_darwin = None
  HOST_CMAKE_PREFIX_PATH = None
  CMAKE_PREFIX_PATH = None
  CMAKE_x86_64-apple-darwin = None
  CMAKE_x86_64_apple_darwin = None
  HOST_CMAKE = None
  CMAKE = None
  running: cd "/Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out/build" && CMAKE_PREFIX_PATH="" LC_ALL="C" "cmake" "/Users/ur20980/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/safe-oqs-sys-0.10.0+liboqs-0.10.1/liboqs" "-DCMAKE_OSX_ARCHITECTURES=x86_64" "-DOQS_BUILD_ONLY_LIB=Yes" "-DOQS_DIST_BUILD=Yes" "-DOQS_ENABLE_KEM_BIKE=No" "-DOQS_ENABLE_KEM_CLASSIC_MCELIECE=No" "-DOQS_ENABLE_KEM_FRODOKEM=Yes" "-DOQS_ENABLE_KEM_HQC=No" "-DOQS_ENABLE_KEM_KYBER=No" "-DOQS_ENABLE_KEM_NTRUPRIME=No" "-DOQS_ENABLE_KEM_ML_KEM=No" "-DOQS_ENABLE_SIG_DILITHIUM=No" "-DOQS_ENABLE_SIG_FALCON=No" "-DOQS_ENABLE_SIG_SPHINCS=No" "-DOQS_ENABLE_SIG_ML_DSA=No" "-DOQS_USE_OPENSSL=No" "-DCMAKE_INSTALL_PREFIX=/Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 --target=x86_64-apple-macosx -mmacosx-version-min=26.1 -std=gnu18 -march=native -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" "-DCMAKE_C_COMPILER=/opt/local/bin/clang" "-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 --target=x86_64-apple-macosx -mmacosx-version-min=26.1 -std=gnu++20 -march=native -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" "-DCMAKE_CXX_COMPILER=/opt/local/bin/clang++" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC -m64 --target=x86_64-apple-macosx -mmacosx-version-min=26.1 -std=gnu18 -march=native -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk" "-DCMAKE_ASM_COMPILER=/opt/local/bin/clang" "-DCMAKE_BUILD_TYPE=Release"
  -- Alg enablement unchanged
  -- Configuring done (0.6s)
  -- Generating done (0.1s)
  -- Build files have been written to: /Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out/build
  running: cd "/Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out/build" && LC_ALL="C" "cmake" "--build" "/Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out/build" "--target" "oqs" "--config" "Release" "--parallel" "4"
  [  2%] Building C object src/kem/frodokem/CMakeFiles/frodokem_avx2.dir/external/frodo640aes_avx2.c.o
  [  5%] Built target xkcp_low_keccakp_1600_plain64
  [  8%] Built target xkcp_low_keccakp_1600times4_serial
  [ 10%] Building C object src/common/CMakeFiles/common.dir/aes/aes.c.o
  [ 13%] Building C object src/kem/frodokem/CMakeFiles/frodokem_avx2.dir/external/frodo976aes_avx2.c.o
  [ 16%] Building C object src/kem/frodokem/CMakeFiles/frodokem_avx2.dir/external/frodo1344aes_avx2.c.o
  [ 18%] Building C object src/common/CMakeFiles/common.dir/aes/aes_c.c.o
  [ 21%] Building C object src/kem/frodokem/CMakeFiles/frodokem_avx2.dir/external/frodo640shake_avx2.c.o
  [ 24%] Building C object src/common/CMakeFiles/common.dir/aes/aes128_ni.c.o
  [ 27%] Building C object src/common/CMakeFiles/common.dir/aes/aes256_ni.c.o
  [ 32%] Built target xkcp_low_keccakp_1600_avx2
  [ 32%] Building C object src/kem/frodokem/CMakeFiles/frodokem_avx2.dir/external/frodo976shake_avx2.c.o
  [ 35%] Building C object src/common/CMakeFiles/common.dir/sha2/sha2.c.o
  [ 37%] Building C object src/kem/frodokem/CMakeFiles/frodokem_avx2.dir/external/frodo1344shake_avx2.c.o
  [ 40%] Built target xkcp_low_keccakp_1600times4_avx2
  [ 43%] Building C object src/common/CMakeFiles/common.dir/sha2/sha2_c.c.o
  [ 45%] Building C object src/common/CMakeFiles/common.dir/sha3/xkcp_sha3.c.o
  [ 48%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/kem_frodokem640aes.c.o
  [ 48%] Built target frodokem_avx2
  [ 51%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/external/frodo640aes.c.o
  [ 54%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/kem_frodokem640shake.c.o
  [ 56%] Building C object src/common/CMakeFiles/common.dir/sha3/xkcp_sha3x4.c.o
  [ 59%] Building C object src/common/CMakeFiles/common.dir/common.c.o
  [ 62%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/external/frodo640shake.c.o
  [ 64%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/kem_frodokem976aes.c.o
  [ 67%] Building C object src/common/CMakeFiles/common.dir/pqclean_shims/fips202.c.o
  [ 70%] Building C object src/common/CMakeFiles/common.dir/pqclean_shims/fips202x4.c.o
  [ 72%] Building C object src/common/CMakeFiles/common.dir/rand/rand.c.o
  [ 75%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/external/frodo976aes.c.o
  [ 78%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/kem_frodokem976shake.c.o
  [ 81%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/external/frodo976shake.c.o
  [ 81%] Built target common
  [ 83%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/kem_frodokem1344aes.c.o
  [ 86%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/external/frodo1344aes.c.o
  [ 89%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/kem_frodokem1344shake.c.o
  [ 91%] Building C object src/kem/frodokem/CMakeFiles/frodokem.dir/external/frodo1344shake.c.o
  [ 91%] Built target frodokem
  [ 94%] Building C object src/CMakeFiles/oqs.dir/kem/kem.c.o
  [ 97%] Building C object src/CMakeFiles/oqs.dir/sig/sig.c.o
  [100%] Linking C static library ../lib/liboqs.a
  [100%] Built target oqs
  cargo:root=/Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out
  cargo:rustc-link-lib=static=oqs
  cargo:rustc-link-search=native=/Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out/build/lib

  --- stderr
  /Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out/build/include/oqs/common.h:14:10: fatal error: 'stdlib.h' file not found

  thread 'main' (5841282) panicked at /Users/ur20980/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/safe-oqs-sys-0.10.0+liboqs-0.10.1/build.rs:33:10:
  Unable to generate bindings: ClangDiagnostic("/Users/ur20980/src/KEMs/target/release/build/safe-oqs-sys-14b630aac4e6c5a1/out/build/include/oqs/common.h:14:10: fatal error: 'stdlib.h' file not found\n")
  stack backtrace:
     0: __rustc::rust_begin_unwind
     1: core::panicking::panic_fmt
     2: core::result::unwrap_failed
     3: core::result::Result<T,E>::expect
     4: build_script_build::generate_bindings
     5: build_script_build::main::{{closure}}
     6: build_script_build::main
     7: core::ops::function::FnOnce::call_once
  note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
$
$
$ ll /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdlib.h
-rw-r--r--  1 root  wheel  2980 Oct 11 01:38 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdlib.h
$

[tarcieri]

This has come up before: #97, #109

That said, I'm on Sequoia 15.6.1 (24G90), Xcode 26.0 and it builds here (and on another macOS device, where I don't think I did anything special in particular):

   Compiling safe-oqs-sys v0.10.0+liboqs-0.10.1
[...]
test frodo-kem/src/lib.rs - (line 7) ... ok
test frodo-kem/src/lib.rs - (line 29) ... ok

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.35s

In both #97 and #109 I had suggested just removing this dependency, which was helpful during development but probably superfluous now. If we could retain it in some sort of cfg-gated way that'd be nice, as suggested in #97.

[tarcieri]

Might need a brew install liboqs possibly?

[mouse07410]

That said, I'm on Sequoia 15.6.1 (24G90), Xcode 26.0 and it builds here (and on another macOS device, where I don't think I did anything special in particular)

There is a difference between Xcode-26.0 and 26.1. It may or may not matter here, I don't know.

Might need a brew install liboqs possibly?

I do not use Brew, and liboqs is (correctly) installed in /opt/local/:

.  .  .
Install the project...
-- Install configuration: "Release"
-- Installing: /opt/local/lib/cmake/liboqs/liboqsConfig.cmake
-- Installing: /opt/local/lib/cmake/liboqs/liboqsConfigVersion.cmake
-- Installing: /opt/local/lib/pkgconfig/liboqs.pc
-- Installing: /opt/local/lib/liboqs.0.15.0-rc1.dylib
-- Up-to-date: /opt/local/lib/liboqs.9.dylib
-- Up-to-date: /opt/local/lib/liboqs.dylib
-- Installing: /opt/local/lib/cmake/liboqs/liboqsTargets.cmake
-- Installing: /opt/local/lib/cmake/liboqs/liboqsTargets-release.cmake
-- Up-to-date: /opt/local/include/oqs/oqs.h
-- Up-to-date: /opt/local/include/oqs/aes_ops.h
-- Up-to-date: /opt/local/include/oqs/common.h
-- Up-to-date: /opt/local/include/oqs/rand.h
-- Up-to-date: /opt/local/include/oqs/sha2_ops.h
-- Up-to-date: /opt/local/include/oqs/sha3_ops.h
-- Up-to-date: /opt/local/include/oqs/sha3x4_ops.h
-- Up-to-date: /opt/local/include/oqs/kem.h
-- Up-to-date: /opt/local/include/oqs/sig.h
-- Up-to-date: /opt/local/include/oqs/sig_stfl.h
-- Up-to-date: /opt/local/include/oqs/kem_bike.h
-- Up-to-date: /opt/local/include/oqs/kem_frodokem.h
-- Up-to-date: /opt/local/include/oqs/kem_ntruprime.h
-- Up-to-date: /opt/local/include/oqs/kem_ntru.h
-- Up-to-date: /opt/local/include/oqs/kem_classic_mceliece.h
-- Up-to-date: /opt/local/include/oqs/kem_kyber.h
-- Up-to-date: /opt/local/include/oqs/kem_ml_kem.h
-- Up-to-date: /opt/local/include/oqs/sig_ml_dsa.h
-- Up-to-date: /opt/local/include/oqs/sig_falcon.h
-- Up-to-date: /opt/local/include/oqs/sig_sphincs.h
-- Up-to-date: /opt/local/include/oqs/sig_mayo.h
-- Up-to-date: /opt/local/include/oqs/sig_cross.h
-- Up-to-date: /opt/local/include/oqs/sig_uov.h
-- Up-to-date: /opt/local/include/oqs/sig_snova.h
-- Up-to-date: /opt/local/include/oqs/sig_slh_dsa.h
-- Installing: /opt/local/include/oqs/oqsconfig.h

Start: Sun Nov  9 11:26:12 EST 2025
End:   Sun Nov  9 11:51:20 EST 2025

Completed.
$
$ $ openssl list -kem-algorithms | grep frodo640
  frodo640aes @ oqs
  p256_frodo640aes @ oqs
  x25519_frodo640aes @ oqs
  frodo640shake @ oqs
  p256_frodo640shake @ oqs
  x25519_frodo640shake @ oqs
$ openssl speed frodo640aes
Doing frodo640aes keygen ops for 10s: 32023 frodo640aes KEM keygen ops in 9.96s
Doing frodo640aes encaps ops for 10s: 22482 frodo640aes KEM encaps ops in 9.94s
Doing frodo640aes decaps ops for 10s: 24815 frodo640aes KEM decaps ops in 9.96s
version: 3.5.4
built on: Wed Oct  1 12:51:25 2025 UTC
options: bn(64,64)
compiler: /usr/bin/clang -fPIC -arch x86_64 -pipe -Os -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -arch x86_64 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -DL_ENDIAN -DOPENSSL_PIC -D_REENTRANT -DOPENSSL_BUILDING_OPENSSL -DZLIB -DNDEBUG -I/opt/local/include -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk
CPUINFO: OPENSSL_ia32cap=0x7ffaf3bfffebffff:0x40000008029c67af:0x00000000bc000600:0x0000000000000000:0x0000000000000000
                               keygen    encaps    decaps keygens/s  encaps/s  decaps/s
                frodo640aes 0.000311s 0.000442s 0.000401s    3215.2    2261.8    2491.5
$ 

As you see, my system installs OQSProvider that uses liboqs under the provider name "oqs". And it works.

[tarcieri]

This should be fixed by #166

[mouse07410]

Looks like it indeed has been fixed, thank you!