Bindgen can't find standard C include files.

[MaxGubin]

I have a problem with bindgen, a very standard rule:

rust_bindgen(
    name = "bindgen",
    bindgen_flags = [
        "--no-layout-tests",
        "--with-derive-default",
    ],
    cc_lib = ":c_wrapper",
    header = "wrapper.h",
)

I'm getting an error:

litert/rust/../c/litert_common.h:18:10: fatal error: 'stddef.h' file not found
clang diag: warning: argument unused during compilation: '-nostdinc++' [-Wunused-command-line-argument]
Unable to generate bindings: clang diagnosed error: litert/rust/../c/litert_common.h:18:10: fatal error: 'stddef.h' file not found

It looks like the rule adds some flags to bindgen-cli because I can run it manually and it works. The whole command line that blaze generates is here:

(cd /usr/local/google/home/mgubin/.cache/bazel/_bazel_mgubin/5cc457d7cc06a2a55b643ed10c6a57c0/execroot/litert && \
  exec env - \
    AR_PATH=external/llvm18_linux_x86_64/bin/llvm-ar \
    CLANG_PATH=bazel-out/k8-opt-exec-ST-fee4f6fb849f/bin/external/rules_rust_bindgen/clang \
    CPP_PATH=external/llvm18_linux_x86_64/bin/clang++ \
    GCC_PATH=external/llvm18_linux_x86_64/bin/clang \
    LD_PATH=external/llvm18_linux_x86_64/bin/ld.lld \
    LIBCLANG_PATH=bazel-out/k8-opt-exec-ST-fee4f6fb849f/bin/_solib_x86_64/_U_A_Allvm-project_S_Sclang_Clibclang_Uimport___Uexternal_Sllvm-project_Sclang \
    RUSTFMT=external/rustfmt_1.79.0__x86_64-unknown-linux-gnu_tools/bin/rustfmt \
    RUST_BACKTRACE=1 \
  bazel-out/k8-opt-exec-ST-0465588ec812/bin/external/rules_rust_bindgen__bindgen-cli-0.71.1/bindgen-cli --no-layout-tests --with-derive-default '--rust-edition=2021' litert/rust/wrapper.h --output bazel-out/k8-opt/bin/litert/rust/bindgen.rs -- '-resource-dir=external/sysroot_linux_x86_64_glibc_2_27/usr' -iquote . -iquote bazel-out/k8-opt/bin -iquote external/com_google_absl -iquote bazel-out/k8-opt/bin/external/com_google_absl -iquote external/opencl_headers -iquote bazel-out/k8-opt/bin/external/opencl_headers -iquote external/FP16 -iquote bazel-out/k8-opt/bin/external/FP16 -iquote external/flatbuffers -iquote bazel-out/k8-opt/bin/external/flatbuffers -iquote external/local_xla -iquote bazel-out/k8-opt/bin/external/local_xla -iquote external/local_tsl -iquote bazel-out/k8-opt/bin/external/local_tsl -iquote external/XNNPACK -iquote bazel-out/k8-opt/bin/external/XNNPACK -iquote external/pthreadpool -iquote bazel-out/k8-opt/bin/external/pthreadpool -iquote external/FXdiv -iquote bazel-out/k8-opt/bin/external/FXdiv -iquote external/cpuinfo -iquote bazel-out/k8-opt/bin/external/cpuinfo -iquote external/org_tensorflow -iquote bazel-out/k8-opt/bin/external/org_tensorflow -iquote external/ruy -iquote bazel-out/k8-opt/bin/external/ruy -iquote external/farmhash_archive -iquote bazel-out/k8-opt/bin/external/farmhash_archive -iquote external/eigen_archive -iquote bazel-out/k8-opt/bin/external/eigen_archive -iquote external/arm_neon_2_x86_sse -iquote bazel-out/k8-opt/bin/external/arm_neon_2_x86_sse -iquote external/gemmlowp -iquote bazel-out/k8-opt/bin/external/gemmlowp -iquote external/fft2d -iquote bazel-out/k8-opt/bin/external/fft2d -Ibazel-out/k8-opt/bin/litert/build_common/_virtual_includes/build_config -Ibazel-out/k8-opt/bin/external/FP16/_virtual_includes/FP16 -Ibazel-out/k8-opt/bin/external/flatbuffers/_virtual_includes/runtime_cc -Ibazel-out/k8-opt/bin/external/flatbuffers/_virtual_includes/flatbuffers -Ibazel-out/k8-opt/bin/external/flatbuffers/src/_virtual_includes/flatbuffers -Ibazel-out/k8-opt/bin/external/flatbuffers/src/_virtual_includes/code_generators -Ibazel-out/k8-opt/bin/external/flatbuffers/src/_virtual_includes/generate_fbs -Ibazel-out/k8-opt/bin/external/pthreadpool/_virtual_includes/pthreadpool -Ibazel-out/k8-opt/bin/external/FXdiv/_virtual_includes/FXdiv -Ibazel-out/k8-opt/bin/external/cpuinfo/_virtual_includes/cpuinfo -isystem external/opencl_headers -isystem bazel-out/k8-opt/bin/external/opencl_headers -isystem external/FP16/include -isystem bazel-out/k8-opt/bin/external/FP16/include -isystem tflite/converter/schema -isystem bazel-out/k8-opt/bin/tflite/converter/schema -isystem tflite/schema -isystem bazel-out/k8-opt/bin/tflite/schema -isystem external/XNNPACK/include -isystem bazel-out/k8-opt/bin/external/XNNPACK/include -isystem external/XNNPACK/src -isystem bazel-out/k8-opt/bin/external/XNNPACK/src -isystem external/pthreadpool/include -isystem bazel-out/k8-opt/bin/external/pthreadpool/include -isystem external/FXdiv/include -isystem bazel-out/k8-opt/bin/external/FXdiv/include -isystem external/XNNPACK/src/configs/include -isystem bazel-out/k8-opt/bin/external/XNNPACK/src/configs/include -isystem external/XNNPACK/src/configs/src -isystem bazel-out/k8-opt/bin/external/XNNPACK/src/configs/src -isystem external/cpuinfo/include -isystem bazel-out/k8-opt/bin/external/cpuinfo/include -isystem external/cpuinfo/src -isystem bazel-out/k8-opt/bin/external/cpuinfo/src -isystem tflite/delegates/gpu/common/task -isystem bazel-out/k8-opt/bin/tflite/delegates/gpu/common/task -isystem tflite/acceleration/configuration -isystem bazel-out/k8-opt/bin/tflite/acceleration/configuration -isystem external/farmhash_archive/src -isystem bazel-out/k8-opt/bin/external/farmhash_archive/src -isystem external/eigen_archive -isystem bazel-out/k8-opt/bin/external/eigen_archive -isystem external/eigen_archive/mkl_include -isystem bazel-out/k8-opt/bin/external/eigen_archive/mkl_include -isystem tflite/delegates/xnnpack -isystem bazel-out/k8-opt/bin/tflite/delegates/xnnpack -nostdinc++ -nostdinc '-isystem external/sysroot_linux_x86_64_glibc_2_27/usr/include/c++/8' '-isystem external/sysroot_linux_x86_64_glibc_2_27/usr/include/x86_64-linux-gnu/c++/8' '-isystem external/sysroot_linux_x86_64_glibc_2_27/usr/include/c++/8/backward' '-isystem external/sysroot_linux_x86_64_glibc_2_27/usr/include/c++/8/experimental' '-isystem external/llvm18_linux_x86_64/lib/clang/18' '-isystem external/llvm18_linux_x86_64/lib/clang/18/include' '-isystem external/sysroot_linux_x86_64_glibc_2_27/usr/local/include' '-isystem external/sysroot_linux_x86_64_glibc_2_27/usr/include/x86_64-linux-gnu' '-isystem external/sysroot_linux_x86_64_glibc_2_27/usr/include' -Wall -no-canonical-prefixes -Wno-builtin-macro-redefined '-D__DATE__="redacted"' '-D__TIMESTAMP__="redacted"' '-D__TIME__="redacted"' --sysroot external/sysroot_linux_x86_64_glibc_2_27 '--target=x86_64-linux-gnu' -Wno-gnu-offsetof-extensions '-Werror=mismatched-tags' -DNDEBUG '-D_FORTIFY_SOURCE=1' -Wthread-safety -Wself-assign -Wunused-but-set-parameter -Wno-free-nonheap-object -DTFLITE_KERNEL_USE_XNNPACK '-D_DARWIN_C_SOURCE=1' '-D_POSIX_C_SOURCE=199309L' '-DXNN_ENABLE_CPUINFO=1' '-DXNN_ENABLE_SPARSE=1' '-DXNN_ENABLE_ASSEMBLY=1' '-DXNN_ENABLE_ARM_FP16_SCALAR=0' '-DXNN_ENABLE_ARM_FP16_VECTOR=0' '-DXNN_ENABLE_ARM_BF16=0' '-DXNN_ENABLE_ARM_DOTPROD=0' '-DXNN_ENABLE_ARM_I8MM=0' '-DXNN_ENABLE_RISCV_FP16_VECTOR=0' '-DXNN_ENABLE_SSE=1' '-DXNN_ENABLE_SSE2=1' '-DXNN_ENABLE_SSSE3=1' '-DXNN_ENABLE_SSE41=1' '-DXNN_ENABLE_AVX=1' '-DXNN_ENABLE_F16C=1' '-DXNN_ENABLE_FMA3=1' '-DXNN_ENABLE_AVX2=1' '-DXNN_ENABLE_AVXVNNI=1' '-DXNN_ENABLE_AVXVNNIINT8=1' '-DXNN_ENABLE_AVX512F=1' '-DXNN_ENABLE_AVX256SKX=1' '-DXNN_ENABLE_AVX256VNNI=1' '-DXNN_ENABLE_AVX256VNNIGFNI=1' '-DXNN_ENABLE_AVX512SKX=1' '-DXNN_ENABLE_AVX512VBMI=1' '-DXNN_ENABLE_AVX512VNNI=1' '-DXNN_ENABLE_AVX512VNNIGFNI=1' '-DXNN_ENABLE_AVX512AMX=1' '-DXNN_ENABLE_AVX512FP16=1' '-DXNN_ENABLE_AVX512BF16=1' '-DXNN_ENABLE_HVX=0' '-DXNN_ENABLE_KLEIDIAI=0' '-DXNN_ENABLE_ARM_SME=0' '-DXNN_ENABLE_ARM_SME2=0' '-DXNN_ENABLE_WASM_REVECTORIZE=0' '-DPTHREADPOOL_USE_CPUINFO=0' '-DPTHREADPOOL_USE_FASTPATH=1' -DPTHREADPOOL_NO_DEPRECATED_API '-DXNN_LOG_LEVEL=0' '-DTF_MAJOR_VERSION=2' '-DTF_MINOR_VERSION=21' '-DTF_PATCH_VERSION=0' '-DTF_VERSION_SUFFIX="-dev0+selfbuilt"' '-DXNNPACK_DELEGATE_ENABLE_QS8=1' '-DXNNPACK_DELEGATE_ENABLE_QU8=1' '-DEIGEN_MAX_ALIGN_BYTES=64' -DEIGEN_ALLOW_UNALIGNED_SCALARS '-DEIGEN_USE_AVX512_GEMM_KERNELS=0' -DFC_4BIT_SSE '-DEIGEN_NEON_GEBP_NR=4' -DTFLITE_BUILD_WITH_XNNPACK_DELEGATE '-DEIGEN_ALTIVEC_USE_CUSTOM_PACK=0' -DTFLITE_USE_OPAQUE_DELEGATE)