error: building the downstream C-binding library using the Solana SDK

[johhnsmmith198]

Problem

The environment variable passed to the downstream cmake library are not enough to build the library correctly.
Also I noticed that the -fuse-ld=lld was missing.
Even if I add it manually the compilation keeps failing for some reason.

I am just adding this dependency to the example-helloworld program to trigger this issue

h3ron = { git = "https://github.com/nmandery/h3ron.git"}

this is the result of running npm run build:program-rust

> helloworld@0.0.1 build:program-rust /home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld
> cargo build-bpf --manifest-path=./src/program-rust/Cargo.toml --bpf-out-dir=dist/program

BPF SDK: /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf
cargo-build-bpf child: rustup toolchain list -v
cargo-build-bpf child: cargo +bpf build --target bpfel-unknown-unknown --release
Error: Function _ZN6robust13incircleadapt17hcd08b205f8290514E Stack offset of 24392 exceeded max offset of 4096 by 20296 bytes, please minimize large stack variables
   Compiling as-slice v0.1.5
   Compiling digest v0.9.0
   Compiling block-buffer v0.9.0
   Compiling proc-macro-crate v0.1.5
   Compiling h3ron-h3-sys v0.12.0 (https://github.com/nmandery/h3ron.git#ab3a27f3)
   Compiling sha2 v0.9.5
   Compiling sha3 v0.9.1
error: failed to run custom build command for `h3ron-h3-sys v0.12.0 (https://github.com/nmandery/h3ron.git#ab3a27f3)`

Caused by:
  process didn't exit successfully: `/home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld/src/program-rust/target/release/build/h3ron-h3-sys-1ab6cd26d7e5abe9/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-changed=libh3
  CMAKE_TOOLCHAIN_FILE_bpfel-unknown-unknown = None
  CMAKE_TOOLCHAIN_FILE_bpfel_unknown_unknown = None
  TARGET_CMAKE_TOOLCHAIN_FILE = None
  CMAKE_TOOLCHAIN_FILE = None
  CMAKE_GENERATOR_bpfel-unknown-unknown = None
  CMAKE_GENERATOR_bpfel_unknown_unknown = None
  TARGET_CMAKE_GENERATOR = None
  CMAKE_GENERATOR = None
  CMAKE_PREFIX_PATH_bpfel-unknown-unknown = None
  CMAKE_PREFIX_PATH_bpfel_unknown_unknown = None
  TARGET_CMAKE_PREFIX_PATH = None
  CMAKE_PREFIX_PATH = None
  CMAKE_bpfel-unknown-unknown = None
  CMAKE_bpfel_unknown_unknown = None
  TARGET_CMAKE = None
  CMAKE = None
  running: "cmake" "/home/pc/.cargo/git/checkouts/h3ron-31217b227e8cd3a6/ab3a27f/h3ron-h3-sys/libh3" "-DBUILD_BENCHMARKS=OFF" "-DBUILD_FILTERS=OFF" "-DBUILD_GENERATORS=OFF" "-DBUILD_TESTING=OFF" "-DENABLE_COVERAGE=OFF" "-DENABLE_DOCS=OFF" "-DENABLE_FORMAT=OFF" "-DENABLE_LINTING=OFF" "-DCMAKE_INSTALL_PREFIX=/home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld/src/program-rust/target/bpfel-unknown-unknown/release/build/h3ron-h3-sys-df478ba73015eab9/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC --target=bpfel-unknown-unknown" "-DCMAKE_C_COMPILER=/home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang" "-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC" "-DCMAKE_CXX_COMPILER=/usr/bin/c++" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC --target=bpfel-unknown-unknown" "-DCMAKE_ASM_COMPILER=/home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang" "-DCMAKE_BUILD_TYPE=Release"
  -- The C compiler identification is Clang 13.0.0
  -- Detecting C compiler ABI info
  -- Detecting C compiler ABI info - failed
  -- Check for working C compiler: /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang
  -- Check for working C compiler: /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang - broken
  -- Configuring incomplete, errors occurred!
  See also "/home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld/src/program-rust/target/bpfel-unknown-unknown/release/build/h3ron-h3-sys-df478ba73015eab9/out/build/CMakeFiles/CMakeOutput.log".
  See also "/home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld/src/program-rust/target/bpfel-unknown-unknown/release/build/h3ron-h3-sys-df478ba73015eab9/out/build/CMakeFiles/CMakeError.log".

  --- stderr
  CMake Error at /usr/local/share/cmake-3.22/Modules/CMakeTestCCompiler.cmake:69 (message):
    The C compiler

      "/home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang"

    is not able to compile a simple test program.

    It fails with the following output:

      Change Dir: /home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld/src/program-rust/target/bpfel-unknown-unknown/release/build/h3ron-h3-sys-df478ba73015eab9/out/build/CMakeFiles/CMakeTmp

      Run Build Command(s):/usr/bin/make -f Makefile cmTC_b71ce/fast && /usr/bin/make  -f CMakeFiles/cmTC_b71ce.dir/build.make CMakeFiles/cmTC_b71ce.dir/build
      make[1]: Entering directory '/home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld/src/program-rust/target/bpfel-unknown-unknown/release/build/h3ron-h3-sys-df478ba73015eab9/out/build/CMakeFiles/CMakeTmp'
      Building C object CMakeFiles/cmTC_b71ce.dir/testCCompiler.c.o
      /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang   -ffunction-sections -fdata-sections -fPIC --target=bpfel-unknown-unknown  -std=gnu99 -MD -MT CMakeFiles/cmTC_b71ce.dir/testCCompiler.c.o -MF CMakeFiles/cmTC_b71ce.dir/testCCompiler.c.o.d -o CMakeFiles/cmTC_b71ce.dir/testCCompiler.c.o -c /home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld/src/program-rust/target/bpfel-unknown-unknown/release/build/h3ron-h3-sys-df478ba73015eab9/out/build/CMakeFiles/CMakeTmp/testCCompiler.c
      Linking C executable cmTC_b71ce
      /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_b71ce.dir/link.txt --verbose=1
      /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang  -ffunction-sections -fdata-sections -fPIC --target=bpfel-unknown-unknown  -rdynamic CMakeFiles/cmTC_b71ce.dir/testCCompiler.c.o -o cmTC_b71ce
      /usr/bin/ld: unknown architecture of input file `CMakeFiles/cmTC_b71ce.dir/testCCompiler.c.o' is incompatible with i386:x86-64 output
      collect2: error: ld returned 1 exit status
      clang-13: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
      make[1]: *** [CMakeFiles/cmTC_b71ce.dir/build.make:100: cmTC_b71ce] Error 1
      make[1]: Leaving directory '/home/pc/Documents/funspace/crypto-world/lab/solanaworkspace/example-helloworld/src/program-rust/target/bpfel-unknown-unknown/release/build/h3ron-h3-sys-df478ba73015eab9/out/build/CMakeFiles/CMakeTmp'
      make: *** [Makefile:127: cmTC_b71ce/fast] Error 2





    CMake will not be able to correctly generate this project.
  Call Stack (most recent call first):
    CMakeLists.txt:59 (project)


  thread 'main' panicked at '
  command did not execute successfully, got: exit status: 1

  build script failed, must exit now', /home/pc/.cargo/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.46/src/lib.rs:974:5
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
error: build failed

I think the important bit is /usr/bin/ld: unknown architecture of input file CMakeFiles/cmTC_b71ce.dir/testCCompiler.c.o' is incompatible with i386:x86-64 output
We see here that the /usr/bin/ld is being used.
Instead I tried to copy-paste the cmake command and try to run it myself on the c source code of the h3ron library.
adding -v -fuse-ld=lld

export PATH="/home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/:$PATH"

"cmake" "../h3ron-h3-sys/libh3" \
"-DBUILD_BENCHMARKS=OFF" \
"-DBUILD_FILTERS=OFF" \
"-DBUILD_GENERATORS=OFF" \
"-DBUILD_TESTING=OFF" \
"-DENABLE_COVERAGE=OFF" \
"-DENABLE_DOCS=OFF" \
"-DENABLE_FORMAT=OFF" \
"-DENABLE_LINTING=OFF" \
"-DCMAKE_INSTALL_PREFIX=./h3ron-h3-sys-df478ba73015eab9/out" \
"-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC --target=bpfel-unknown-unknown -v -fuse-ld=lld" \
"-DCMAKE_C_COMPILER=/home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang" \
"-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC -v" \
"-DCMAKE_CXX_COMPILER=/usr/bin/c++" \
"-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC --target=bpfel-unknown-unknown -v" \
"-DCMAKE_ASM_COMPILER=/home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang" \
"-DCMAKE_BUILD_TYPE=Release"

but getting a slightly different error with

CMake Error at /usr/local/share/cmake-3.22/Modules/CMakeTestCCompiler.cmake:69 (message):
  The C compiler

    "/home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /home/pc/Documents/funspace/h3ron/build/CMakeFiles/CMakeTmp

    Run Build Command(s):/usr/bin/make -f Makefile cmTC_1ce4d/fast && /usr/bin/make  -f CMakeFiles/cmTC_1ce4d.dir/build.make CMakeFiles/cmTC_1ce4d.dir/build
    make[1]: Entering directory '/home/pc/Documents/funspace/h3ron/build/CMakeFiles/CMakeTmp'
    Building C object CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o
    /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang   -ffunction-sections -fdata-sections -fPIC --target=bpfel-unknown-unknown -v -fuse-ld=lld  -std=gnu99 -MD -MT CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o -MF CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o.d -o CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o -c /home/pc/Documents/funspace/h3ron/build/CMakeFiles/CMakeTmp/testCCompiler.c
    clang version 13.0.0 (https://github.com/solana-labs/llvm-project.git 9a51f4037220994af74488ba064efc4e96ee08c0)
    Target: bpfel-unknown-unknown
    Thread model: posix
    InstalledDir: /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin
    clang-13: warning: argument unused during compilation: '-fuse-ld=lld' [-Wunused-command-line-argument]
     (in-process)
     "/home/pc/.cache/solana/v1.21/bpf-tools/llvm/bin/clang-13" -cc1 -triple bpfel-unknown-unknown -emit-obj -mrelax-all --mrelax-relocations -disable-free -disable-llvm-verifier -discard-value-names -main-file-name testCCompiler.c -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -debugger-tuning=gdb -v -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/home/pc/Documents/funspace/h3ron/build/CMakeFiles/CMakeTmp -resource-dir /home/pc/.cache/solana/v1.21/bpf-tools/llvm/lib/clang/13.0.0 -dependency-file CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o.d -MT CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o -sys-header-deps -std=gnu99 -fdebug-compilation-dir=/home/pc/Documents/funspace/h3ron/build/CMakeFiles/CMakeTmp -ferror-limit 19 -fgnuc-version=4.2.1 -faddrsig -o CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o -x c /home/pc/Documents/funspace/h3ron/build/CMakeFiles/CMakeTmp/testCCompiler.c
    clang -cc1 version 13.0.0 based upon LLVM 13.0.0-rust-dev default target x86_64-unknown-linux-gnu
    #include "..." search starts here:
    #include <...> search starts here:
     /usr/local/include
     /home/pc/.cache/solana/v1.21/bpf-tools/llvm/lib/clang/13.0.0/include
     /usr/include
    End of search list.
    Linking C executable cmTC_1ce4d
    /usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_1ce4d.dir/link.txt --verbose=1
    /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin/clang  -ffunction-sections -fdata-sections -fPIC --target=bpfel-unknown-unknown -v -fuse-ld=lld  -rdynamic CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o -o cmTC_1ce4d
    clang version 13.0.0 (https://github.com/solana-labs/llvm-project.git 9a51f4037220994af74488ba064efc4e96ee08c0)
    Target: bpfel-unknown-unknown
    Thread model: posix
    InstalledDir: /home/pc/.local/share/solana/install/releases/1.9.4/solana-release/bin/sdk/bpf/dependencies/bpf-tools/llvm/bin
     "/usr/bin/gcc" -fuse-ld=lld -rdynamic -o cmTC_1ce4d CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o
    ld.lld: error: CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o is incompatible with elf64-x86-64
    collect2: error: ld returned 1 exit status
    clang-13: error: linker (via gcc) command failed with exit code 1 (use -v to see invocation)
    make[1]: *** [CMakeFiles/cmTC_1ce4d.dir/build.make:100: cmTC_1ce4d] Error 1
    make[1]: Leaving directory '/home/pc/Documents/funspace/h3ron/build/CMakeFiles/CMakeTmp'
    make: *** [Makefile:127: cmTC_1ce4d/fast] Error 2

using the solana lld is now returning: ld.lld: error: CMakeFiles/cmTC_1ce4d.dir/testCCompiler.c.o is incompatible with elf64-x86-64

Proposed Solution

I don't know I am really trying to figure it out.
We have been digging into it on this issue here: nmandery/h3ron#30