zig c++ build failed: error: unknown command: -I.

[xiaods]

我想使用zig c++编译一款开源项目pipy proxy，发现并不能完美替换cmake.
git clone https://github.com/flomesh-io/pipy.git
cd pipy, vi build.sh
修改cc环境变量：

  #export CC=${CC:-clang}
  #export CXX=${CXX:-clang++}
  export CC="zig cc"
  export CXX="zig c++"

运行结果：

[ 40%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/deflate.c.o
info: Usage: zig [command] [options]

Commands:

  build            Build project from build.zig
  fetch            Copy a package into global cache and print its hash
  init             Initialize a Zig package in the current directory

  build-exe        Create executable from source or object files
  build-lib        Create library from source or object files
  build-obj        Create object from source or object files
  test             Perform unit testing
  run              Create executable and run immediately

  ast-check        Look for simple compile errors in any set of files
  fmt              Reformat Zig source into canonical form
  reduce           Minimize a bug report
  translate-c      Convert C code to Zig code

  ar               Use Zig as a drop-in archiver
  cc               Use Zig as a drop-in C compiler
  c++              Use Zig as a drop-in C++ compiler
  dlltool          Use Zig as a drop-in dlltool.exe
  lib              Use Zig as a drop-in lib.exe
  ranlib           Use Zig as a drop-in ranlib
  objcopy          Use Zig as a drop-in objcopy
  rc               Use Zig as a drop-in rc.exe

  env              Print lib path, std path, cache directory, and version
  help             Print this help and exit
  std              View standard library documentation in a browser
  libc             Display native libc paths file or validate one
  targets          List available compilation targets
  version          Print version number and exit
  zen              Print Zen of Zig and exit

General Options:

  -h, --help       Print command-specific usage

error: unknown command: -I.
info: Usage: zig [command] [options]

Commands:

  build            Build project from build.zig
  fetch            Copy a package into global cache and print its hash
  init             Initialize a Zig package in the current directory

  build-exe        Create executable from source or object files
  build-lib        Create library from source or object files
  build-obj        Create object from source or object files
  test             Perform unit testing
  run              Create executable and run immediately

  ast-check        Look for simple compile errors in any set of files
  fmt              Reformat Zig source into canonical form
  reduce           Minimize a bug report
  translate-c      Convert C code to Zig code

  ar               Use Zig as a drop-in archiver
  cc               Use Zig as a drop-in C compiler
  c++              Use Zig as a drop-in C++ compiler
  dlltool          Use Zig as a drop-in dlltool.exe
  lib              Use Zig as a drop-in lib.exe
  ranlib           Use Zig as a drop-in ranlib
  objcopy          Use Zig as a drop-in objcopy
  rc               Use Zig as a drop-in rc.exe

  env              Print lib path, std path, cache directory, and version
  help             Print this help and exit
  std              View standard library documentation in a browser
  libc             Display native libc paths file or validate one
  targets          List available compilation targets
  version          Print version number and exit
  zen              Print Zen of Zig and exit

General Options:

  -h, --help       Print command-specific usage

error: unknown command: -I.
make[4]: *** [Makefile:3123: apps/lib/libapps-lib-app_libctx.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[4]: *** [Makefile:3125: apps/lib/libapps-lib-app_params.o] Error 1
make[3]: *** [Makefile:1511: build_sw] Error 2
make[2]: *** [CMakeFiles/OpenSSL.dir/build.make:75: ../deps/openssl-3.2.0/build/libcrypto.a] Error 2
make[1]: *** [CMakeFiles/Makefile2:446: CMakeFiles/OpenSSL.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 40%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlicommon.dir/c/common/transform.c.o
[ 40%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/gzclose.c.o
[ 40%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/backward_references_hq.c.o
[ 41%] Linking C shared library libbrotlicommon.so
[ 41%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/gzlib.c.o
[ 41%] Linking CXX static library libleveldb.a
[ 41%] Built target brotlicommon
[ 42%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/gzread.c.o
[ 42%] Built target leveldb
[ 42%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/gzwrite.c.o
[ 42%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/inflate.c.o
[ 42%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/infback.c.o
[ 43%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/inftrees.c.o
[ 43%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/inffast.c.o
[ 43%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlidec-static.dir/c/dec/huffman.c.o
[ 43%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/trees.c.o
[ 44%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/uncompr.c.o
[ 45%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlidec-static.dir/c/dec/state.c.o
[ 45%] Building C object deps/zlib-1.3.1/CMakeFiles/zlib.dir/zutil.c.o
[ 45%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/bit_cost.c.o
[ 46%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/block_splitter.c.o
[ 46%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/brotli_bit_stream.c.o
[ 46%] Linking C static library libbrotlidec-static.a
[ 46%] Built target brotlidec-static
[ 46%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/cluster.c.o
[ 47%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/command.c.o
[ 47%] Linking C shared library libz.so
[ 47%] Built target zlib
[ 47%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/compress_fragment.c.o
[ 47%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/compress_fragment_two_pass.c.o
[ 47%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/dictionary_hash.c.o
[ 48%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/encode.c.o
[ 48%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/encoder_dict.c.o
[ 48%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/entropy_encode.c.o
[ 48%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/fast_log.c.o
[ 49%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/histogram.c.o
[ 49%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/literal_cost.c.o
[ 49%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/memory.c.o
[ 50%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/metablock.c.o
[ 50%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/static_dict.c.o
[ 50%] Building C object deps/brotli-1.0.9/CMakeFiles/brotlienc-static.dir/c/enc/utf8_util.c.o
[ 50%] Linking C static library libbrotlienc-static.a
[ 50%] Built target brotlienc-static
[ 50%] Linking CXX executable ../../../../bin/baseline
[ 50%] Built target baseline
make: *** [Makefile:136: all] Error 2

[jiacai2050]

zigcc 现在问题是比较多。可以用这个试试：https://github.com/jiacai2050/zigcc

[zhylmzr]

CMake 的 CMAKE_C_COMPILER 不支持空格，用这种方式 ziglang/zig#8716 (comment)

[zhylmzr]

注意$@加上引号 ziglang/zig#8716 (comment)

[xiaods]

感谢两位分享。用上了，但是针对具体的这个开源项目，还是无法编译OpenSSL子工程。不用管了，换原生方式编译吧。