fail to build on Mac Catalina 10.15.6

[Eason0210]

@cireu I try to build fuz.el on Mac with rustc 1.46.0 (04488afe3 2020-08-24), but it always failed with errors as below:
Can you help me to get this work?

➜  fuz git:(master) cargo build --release
   Compiling proc-macro2 v0.4.30
   Compiling unicode-xid v0.1.0
   Compiling syn v0.15.39
   Compiling libc v0.2.58
   Compiling cc v1.0.37
   Compiling memchr v2.2.1
   Compiling cfg-if v0.1.9
   Compiling glob v0.2.11
   Compiling version_check v0.1.5
   Compiling failure_derive v0.1.5
   Compiling byteorder v1.3.2
   Compiling regex v1.1.9
   Compiling ucd-util v0.1.3
   Compiling rustc-demangle v0.1.15
   Compiling bitflags v1.1.0
   Compiling lazy_static v1.3.0
   Compiling utf8-ranges v1.0.3
   Compiling unicode-width v0.1.5
   Compiling quick-error v1.2.2
   Compiling strsim v0.8.0
   Compiling bindgen v0.48.1
   Compiling ansi_term v0.11.0
   Compiling termcolor v1.0.5
   Compiling vec_map v0.8.1
   Compiling scopeguard v0.3.3
   Compiling strsim v0.7.0
   Compiling peeking_take_while v0.1.2
   Compiling fnv v1.0.6
   Compiling ident_case v1.0.1
   Compiling fuzzy-matcher v0.2.1
   Compiling log v0.4.6
   Compiling thread_local v0.3.6
   Compiling regex-syntax v0.6.8
   Compiling humantime v1.2.0
   Compiling textwrap v0.11.0
   Compiling nom v4.2.3
   Compiling clang-sys v0.26.4
   Compiling atty v0.2.11
   Compiling clap v2.33.0
   Compiling quote v0.6.13
   Compiling hashbrown v0.1.8
   Compiling aho-corasick v0.7.4
   Compiling backtrace-sys v0.1.30
   Compiling libloading v0.5.2
   Compiling cexpr v0.3.5
The following warnings were emitted during compilation:

warning: src/os/unix/global_static.c:1:10: fatal error: 'pthread.h' file not found
warning: #include <pthread.h>
warning:          ^~~~~~~~~~~
warning: 1 error generated.

error: failed to run custom build command for `libloading v0.5.2`

Caused by:
  process didn't exit successfully: `/Users/aq02/myemacs/site-lisp/extensions/fuz/target/release/build/libloading-108cebee36ccfdb2/build-script-build` (exit code: 1)
  --- stdout
  TARGET = Some("x86_64-apple-darwin")
  OPT_LEVEL = Some("3")
  HOST = Some("x86_64-apple-darwin")
  CC_x86_64-apple-darwin = None
  CC_x86_64_apple_darwin = None
  HOST_CC = None
  CC = None
  CFLAGS_x86_64-apple-darwin = None
  CFLAGS_x86_64_apple_darwin = None
  HOST_CFLAGS = None
  CFLAGS = None
  CRATE_CC_NO_DEFAULTS = None
  DEBUG = Some("false")
  CARGO_CFG_TARGET_FEATURE = Some("fxsr,sse,sse2,sse3,ssse3")
  running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-Wall" "-Wextra" "-o" "/Users/aq02/myemacs/site-lisp/extensions/fuz/target/release/build/libloading-08ad8d0cc830e96c/out/src/os/unix/global_static.o" "-c" "src/os/unix/global_static.c"
  cargo:warning=src/os/unix/global_static.c:1:10: fatal error: 'pthread.h' file not found
  cargo:warning=#include <pthread.h>
  cargo:warning=         ^~~~~~~~~~~
  cargo:warning=1 error generated.
  exit code: 1
  --- stderr

  error occurred: Command "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-Wall" "-Wextra" "-o" "/Users/aq02/myemacs/site-lisp/extensions/fuz/target/release/build/libloading-08ad8d0cc830e96c/out/src/os/unix/global_static.o" "-c" "src/os/unix/global_static.c" with args "cc" did not execute successfully (status code exit code: 1).

warning: build failed, waiting for other jobs to finish...
The following warnings were emitted during compilation:

warning: src/libbacktrace/alloc.c:35:10: fatal error: 'errno.h' file not found
warning: #include <errno.h>
warning:          ^~~~~~~~~
warning: 1 error generated.

[cireu]

Do you have Clang & LLVM installed?

[Eason0210]

yes, the Clang and llvm was installed.

➜  fuz git:(master) clang --version
clang version 10.0.1
Target: x86_64-apple-darwin19.6.0
Thread model: posix
InstalledDir: /usr/local/opt/llvm/bin

[cireu]

Sorry, I don't have a Mac and don't know why it fails. :(

[Eason0210]

Now I can build it successfully on Mac Big Sur. May be it's the env issue of my .zshenv and .zshrc