macOS compiling error
jianshu93 opened this issue · comments
Hello flopp team,
I have the following error:
The following warnings were emitted during compilation:
warning: curl/lib/connect.c: In function ‘singleipconnect’:
warning: curl/lib/connect.c:1219:10: warning: implicit declaration of function ‘__builtin_available’; did you mean ‘__builtin_scalbl’? [-Wimplicit-function-declaration]
warning: 1219 | if(__builtin_available(macOS 10.11, iOS 9.0, tvOS 9.0, watchOS 2.0, *)) {
warning: | ^~~~~~~~~~~~~~~~~~~
warning: | __builtin_scalbl
warning: curl/lib/connect.c:1219:30: error: ‘macOS’ undeclared (first use in this function)
warning: 1219 | if(__builtin_available(macOS 10.11, iOS 9.0, tvOS 9.0, watchOS 2.0, *)) {
warning: | ^~~~~
warning: curl/lib/connect.c:1219:30: note: each undeclared identifier is reported only once for each function it appears in
warning: curl/lib/connect.c:1219:35: error: expected ‘)’ before numeric constant
warning: 1219 | if(__builtin_available(macOS 10.11, iOS 9.0, tvOS 9.0, watchOS 2.0, *)) {
warning: | ~ ^~~~~~
warning: | )
error: failed to run custom build command for curl-sys v0.4.36+curl-7.71.1
Caused by:
process didn't exit successfully: /Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-45c209a9424ff78e/build-script-build (exit status: 1)
--- stdout
cargo:rustc-link-lib=clang_rt.osx
cargo:rustc-link-search=/usr/local/Cellar/llvm/13.0.0_2/lib/clang/13.0.0/lib/darwin
cargo:root=/Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-b1e6a325f3f5a8d4/out
cargo:include=/Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-b1e6a325f3f5a8d4/out/include
cargo:static=1
cargo:rustc-cfg=link_libz
unable to determine Xcode version, assuming >= 9
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" "-arch" "x86_64" "-I" "curl/lib" "-I" "curl/include" "-I" "/Users/jianshuzhao/Github/flopp/target/release/build/libz-sys-610a7a9617da6dd8/out/include" "-fvisibility=hidden" "-DBUILDING_LIBCURL" "-DCURL_DISABLE_CRYPTO_AUTH" "-DCURL_DISABLE_DICT" "-DCURL_DISABLE_GOPHER" "-DCURL_DISABLE_IMAP" "-DCURL_DISABLE_LDAP" "-DCURL_DISABLE_LDAPS" "-DCURL_DISABLE_NTLM" "-DCURL_DISABLE_POP3" "-DCURL_DISABLE_RTSP" "-DCURL_DISABLE_SMB" "-DCURL_DISABLE_SMTP" "-DCURL_DISABLE_TELNET" "-DCURL_DISABLE_TFTP" "-DCURL_STATICLIB" "-DENABLE_IPV6" "-DHAVE_ASSERT_H" "-DOS="unknown"" "-DHAVE_ZLIB_H" "-DHAVE_LIBZ" "-DHAVE_GETADDRINFO" "-DHAVE_GETPEERNAME" "-DHAVE_GETSOCKNAME" "-DUSE_UNIX_SOCKETS" "-DHAVE_SYS_UN_H" "-DUSE_SECTRANSP" "-DHAVE_BUILTIN_AVAILABLE=1" "-D__APPLE__" "-Dmacintosh" "-DHAVE_MACH_ABSOLUTE_TIME" "-DRECV_TYPE_ARG1=int" "-DHAVE_PTHREAD_H" "-DHAVE_ARPA_INET_H" "-DHAVE_ERRNO_H" "-DHAVE_FCNTL_H" "-DHAVE_NETDB_H" "-DHAVE_NETINET_IN_H" "-DHAVE_POLL_FINE" "-DHAVE_POLL_H" "-DHAVE_FCNTL_O_NONBLOCK" "-DHAVE_SYS_SELECT_H" "-DHAVE_SYS_STAT_H" "-DHAVE_UNISTD_H" "-DHAVE_RECV" "-DHAVE_SELECT" "-DHAVE_SEND" "-DHAVE_SOCKET" "-DHAVE_STERRROR_R" "-DHAVE_SOCKETPAIR" "-DHAVE_STRUCT_TIMEVAL" "-DUSE_THREADS_POSIX" "-DRECV_TYPE_ARG2=void*" "-DRECV_TYPE_ARG3=size_t" "-DRECV_TYPE_ARG4=int" "-DRECV_TYPE_RETV=ssize_t" "-DSEND_QUAL_ARG2=const" "-DSEND_TYPE_ARG1=int" "-DSEND_TYPE_ARG2=void*" "-DSEND_TYPE_ARG3=size_t" "-DSEND_TYPE_ARG4=int" "-DSEND_TYPE_RETV=ssize_t" "-DSIZEOF_CURL_OFF_T=8" "-DSIZEOF_INT=4" "-DSIZEOF_SHORT=2" "-DSIZEOF_SSIZE_T=8" "-DSIZEOF_SIZE_T=8" "-DSIZEOF_LONG=8" "-o" "/Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-b1e6a325f3f5a8d4/out/build/curl/lib/asyn-thread.o" "-c" "curl/lib/asyn-thread.c"
running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-arch" "x86_64" "-I" "curl/lib" "-I" "curl/include" "-I" "/Users/jianshuzhao/Github/flopp/target/release/build/libz-sys-610a7a9617da6dd8/out/include" "-fvisibility=hidden" "-DBUILDING_LIBCURL" "-DCURL_DISABLE_CRYPTO_AUTH" "-DCURL_DISABLE_DICT" "-DCURL_DISABLE_GOPHER" "-DCURL_DISABLE_IMAP" "-DCURL_DISABLE_LDAP" "-DCURL_DISABLE_LDAPS" "-DCURL_DISABLE_NTLM" "-DCURL_DISABLE_POP3" "-DCURL_DISABLE_RTSP" "-DCURL_DISABLE_SMB" "-DCURL_DISABLE_SMTP" "-DCURL_DISABLE_TELNET" "-DCURL_DISABLE_TFTP" "-DCURL_STATICLIB" "-DENABLE_IPV6" "-DHAVE_ASSERT_H" "-DOS="unknown"" "-DHAVE_ZLIB_H" "-DHAVE_LIBZ" "-DHAVE_GETADDRINFO" "-DHAVE_GETPEERNAME" "-DHAVE_GETSOCKNAME" "-DUSE_UNIX_SOCKETS" "-DHAVE_SYS_UN_H" "-DUSE_SECTRANSP" "-DHAVE_BUILTIN_AVAILABLE=1" "-D__APPLE__" "-Dmacintosh" "-DHAVE_MACH_ABSOLUTE_TIME" "-DRECV_TYPE_ARG1=int" "-DHAVE_PTHREAD_H" "-DHAVE_ARPA_INET_H" "-DHAVE_ERRNO_H" "-DHAVE_FCNTL_H" "-DHAVE_NETDB_H" "-DHAVE_NETINET_IN_H" "-DHAVE_POLL_FINE" "-DHAVE_POLL_H" "-DHAVE_FCNTL_O_NONBLOCK" "-DHAVE_SYS_SELECT_H" "-DHAVE_SYS_STAT_H" "-DHAVE_UNISTD_H" "-DHAVE_RECV" "-DHAVE_SELECT" "-DHAVE_SEND" "-DHAVE_SOCKET" "-DHAVE_STERRROR_R" "-DHAVE_SOCKETPAIR" "-DHAVE_STRUCT_TIMEVAL" "-DUSE_THREADS_POSIX" "-DRECV_TYPE_ARG2=void*" "-DRECV_TYPE_ARG3=size_t" "-DRECV_TYPE_ARG4=int" "-DRECV_TYPE_RETV=ssize_t" "-DSEND_QUAL_ARG2=const" "-DSEND_TYPE_ARG1=int" "-DSEND_TYPE_ARG2=void*" "-DSEND_TYPE_ARG3=size_t" "-DSEND_TYPE_ARG4=int" "-DSEND_TYPE_RETV=ssize_t" "-DSIZEOF_CURL_OFF_T=8" "-DSIZEOF_INT=4" "-DSIZEOF_SHORT=2" "-DSIZEOF_SSIZE_T=8" "-DSIZEOF_SIZE_T=8" "-DSIZEOF_LONG=8" "-o" "/Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-b1e6a325f3f5a8d4/out/build/curl/lib/base64.o" "-c" "curl/lib/base64.c"
exit status: 0
exit status: 0
running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-arch" "x86_64" "-I" "curl/lib" "-I" "curl/include" "-I" "/Users/jianshuzhao/Github/flopp/target/release/build/libz-sys-610a7a9617da6dd8/out/include" "-fvisibility=hidden" "-DBUILDING_LIBCURL" "-DCURL_DISABLE_CRYPTO_AUTH" "-DCURL_DISABLE_DICT" "-DCURL_DISABLE_GOPHER" "-DCURL_DISABLE_IMAP" "-DCURL_DISABLE_LDAP" "-DCURL_DISABLE_LDAPS" "-DCURL_DISABLE_NTLM" "-DCURL_DISABLE_POP3" "-DCURL_DISABLE_RTSP" "-DCURL_DISABLE_SMB" "-DCURL_DISABLE_SMTP" "-DCURL_DISABLE_TELNET" "-DCURL_DISABLE_TFTP" "-DCURL_STATICLIB" "-DENABLE_IPV6" "-DHAVE_ASSERT_H" "-DOS="unknown"" "-DHAVE_ZLIB_H" "-DHAVE_LIBZ" "-DHAVE_GETADDRINFO" "-DHAVE_GETPEERNAME" "-DHAVE_GETSOCKNAME" "-DUSE_UNIX_SOCKETS" "-DHAVE_SYS_UN_H" "-DUSE_SECTRANSP" "-DHAVE_BUILTIN_AVAILABLE=1" "-D__APPLE__" "-Dmacintosh" "-DHAVE_MACH_ABSOLUTE_TIME" "-DRECV_TYPE_ARG1=int" "-DHAVE_PTHREAD_H" "-DHAVE_ARPA_INET_H" "-DHAVE_ERRNO_H" "-DHAVE_FCNTL_H" "-DHAVE_NETDB_H" "-DHAVE_NETINET_IN_H" "-DHAVE_POLL_FINE" "-DHAVE_POLL_H" "-DHAVE_FCNTL_O_NONBLOCK" "-DHAVE_SYS_SELECT_H" "-DHAVE_SYS_STAT_H" "-DHAVE_UNISTD_H" "-DHAVE_RECV" "-DHAVE_SELECT" "-DHAVE_SEND" "-DHAVE_SOCKET" "-DHAVE_STERRROR_R" "-DHAVE_SOCKETPAIR" "-DHAVE_STRUCT_TIMEVAL" "-DUSE_THREADS_POSIX" "-DRECV_TYPE_ARG2=void*" "-DRECV_TYPE_ARG3=size_t" "-DRECV_TYPE_ARG4=int" "-DRECV_TYPE_RETV=ssize_t" "-DSEND_QUAL_ARG2=const" "-DSEND_TYPE_ARG1=int" "-DSEND_TYPE_ARG2=void*" "-DSEND_TYPE_ARG3=size_t" "-DSEND_TYPE_ARG4=int" "-DSEND_TYPE_RETV=ssize_t" "-DSIZEOF_CURL_OFF_T=8" "-DSIZEOF_INT=4" "-DSIZEOF_SHORT=2" "-DSIZEOF_SSIZE_T=8" "-DSIZEOF_SIZE_T=8" "-DSIZEOF_LONG=8" "-o" "/Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-b1e6a325f3f5a8d4/out/build/curl/lib/conncache.o" "-c" "curl/lib/conncache.c"
running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-arch" "x86_64" "-I" "curl/lib" "-I" "curl/include" "-I" "/Users/jianshuzhao/Github/flopp/target/release/build/libz-sys-610a7a9617da6dd8/out/include" "-fvisibility=hidden" "-DBUILDING_LIBCURL" "-DCURL_DISABLE_CRYPTO_AUTH" "-DCURL_DISABLE_DICT" "-DCURL_DISABLE_GOPHER" "-DCURL_DISABLE_IMAP" "-DCURL_DISABLE_LDAP" "-DCURL_DISABLE_LDAPS" "-DCURL_DISABLE_NTLM" "-DCURL_DISABLE_POP3" "-DCURL_DISABLE_RTSP" "-DCURL_DISABLE_SMB" "-DCURL_DISABLE_SMTP" "-DCURL_DISABLE_TELNET" "-DCURL_DISABLE_TFTP" "-DCURL_STATICLIB" "-DENABLE_IPV6" "-DHAVE_ASSERT_H" "-DOS="unknown"" "-DHAVE_ZLIB_H" "-DHAVE_LIBZ" "-DHAVE_GETADDRINFO" "-DHAVE_GETPEERNAME" "-DHAVE_GETSOCKNAME" "-DUSE_UNIX_SOCKETS" "-DHAVE_SYS_UN_H" "-DUSE_SECTRANSP" "-DHAVE_BUILTIN_AVAILABLE=1" "-D__APPLE__" "-Dmacintosh" "-DHAVE_MACH_ABSOLUTE_TIME" "-DRECV_TYPE_ARG1=int" "-DHAVE_PTHREAD_H" "-DHAVE_ARPA_INET_H" "-DHAVE_ERRNO_H" "-DHAVE_FCNTL_H" "-DHAVE_NETDB_H" "-DHAVE_NETINET_IN_H" "-DHAVE_POLL_FINE" "-DHAVE_POLL_H" "-DHAVE_FCNTL_O_NONBLOCK" "-DHAVE_SYS_SELECT_H" "-DHAVE_SYS_STAT_H" "-DHAVE_UNISTD_H" "-DHAVE_RECV" "-DHAVE_SELECT" "-DHAVE_SEND" "-DHAVE_SOCKET" "-DHAVE_STERRROR_R" "-DHAVE_SOCKETPAIR" "-DHAVE_STRUCT_TIMEVAL" "-DUSE_THREADS_POSIX" "-DRECV_TYPE_ARG2=void*" "-DRECV_TYPE_ARG3=size_t" "-DRECV_TYPE_ARG4=int" "-DRECV_TYPE_RETV=ssize_t" "-DSEND_QUAL_ARG2=const" "-DSEND_TYPE_ARG1=int" "-DSEND_TYPE_ARG2=void*" "-DSEND_TYPE_ARG3=size_t" "-DSEND_TYPE_ARG4=int" "-DSEND_TYPE_RETV=ssize_t" "-DSIZEOF_CURL_OFF_T=8" "-DSIZEOF_INT=4" "-DSIZEOF_SHORT=2" "-DSIZEOF_SSIZE_T=8" "-DSIZEOF_SIZE_T=8" "-DSIZEOF_LONG=8" "-o" "/Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-b1e6a325f3f5a8d4/out/build/curl/lib/connect.o" "-c" "curl/lib/connect.c"
cargo:warning=curl/lib/connect.c: In function ‘singleipconnect’:
cargo:warning=curl/lib/connect.c:1219:10: warning: implicit declaration of function ‘__builtin_available’; did you mean ‘__builtin_scalbl’? [-Wimplicit-function-declaration]
cargo:warning= 1219 | if(__builtin_available(macOS 10.11, iOS 9.0, tvOS 9.0, watchOS 2.0, )) {
cargo:warning= | ^~~~~~~~~~~~~~~~~~~
cargo:warning= | __builtin_scalbl
cargo:warning=curl/lib/connect.c:1219:30: error: ‘macOS’ undeclared (first use in this function)
cargo:warning= 1219 | if(__builtin_available(macOS 10.11, iOS 9.0, tvOS 9.0, watchOS 2.0, )) {
cargo:warning= | ^~~~~
cargo:warning=curl/lib/connect.c:1219:30: note: each undeclared identifier is reported only once for each function it appears in
cargo:warning=curl/lib/connect.c:1219:35: error: expected ‘)’ before numeric constant
cargo:warning= 1219 | if(builtin_available(macOS 10.11, iOS 9.0, tvOS 9.0, watchOS 2.0, *)) {
cargo:warning= | ~ ^~~~~~
cargo:warning= | )
exit status: 1
running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-arch" "x86_64" "-I" "curl/lib" "-I" "curl/include" "-I" "/Users/jianshuzhao/Github/flopp/target/release/build/libz-sys-610a7a9617da6dd8/out/include" "-fvisibility=hidden" "-DBUILDING_LIBCURL" "-DCURL_DISABLE_CRYPTO_AUTH" "-DCURL_DISABLE_DICT" "-DCURL_DISABLE_GOPHER" "-DCURL_DISABLE_IMAP" "-DCURL_DISABLE_LDAP" "-DCURL_DISABLE_LDAPS" "-DCURL_DISABLE_NTLM" "-DCURL_DISABLE_POP3" "-DCURL_DISABLE_RTSP" "-DCURL_DISABLE_SMB" "-DCURL_DISABLE_SMTP" "-DCURL_DISABLE_TELNET" "-DCURL_DISABLE_TFTP" "-DCURL_STATICLIB" "-DENABLE_IPV6" "-DHAVE_ASSERT_H" "-DOS="unknown"" "-DHAVE_ZLIB_H" "-DHAVE_LIBZ" "-DHAVE_GETADDRINFO" "-DHAVE_GETPEERNAME" "-DHAVE_GETSOCKNAME" "-DUSE_UNIX_SOCKETS" "-DHAVE_SYS_UN_H" "-DUSE_SECTRANSP" "-DHAVE_BUILTIN_AVAILABLE=1" "-D__APPLE" "-Dmacintosh" "-DHAVE_MACH_ABSOLUTE_TIME" "-DRECV_TYPE_ARG1=int" "-DHAVE_PTHREAD_H" "-DHAVE_ARPA_INET_H" "-DHAVE_ERRNO_H" "-DHAVE_FCNTL_H" "-DHAVE_NETDB_H" "-DHAVE_NETINET_IN_H" "-DHAVE_POLL_FINE" "-DHAVE_POLL_H" "-DHAVE_FCNTL_O_NONBLOCK" "-DHAVE_SYS_SELECT_H" "-DHAVE_SYS_STAT_H" "-DHAVE_UNISTD_H" "-DHAVE_RECV" "-DHAVE_SELECT" "-DHAVE_SEND" "-DHAVE_SOCKET" "-DHAVE_STERRROR_R" "-DHAVE_SOCKETPAIR" "-DHAVE_STRUCT_TIMEVAL" "-DUSE_THREADS_POSIX" "-DRECV_TYPE_ARG2=void" "-DRECV_TYPE_ARG3=size_t" "-DRECV_TYPE_ARG4=int" "-DRECV_TYPE_RETV=ssize_t" "-DSEND_QUAL_ARG2=const" "-DSEND_TYPE_ARG1=int" "-DSEND_TYPE_ARG2=void" "-DSEND_TYPE_ARG3=size_t" "-DSEND_TYPE_ARG4=int" "-DSEND_TYPE_RETV=ssize_t" "-DSIZEOF_CURL_OFF_T=8" "-DSIZEOF_INT=4" "-DSIZEOF_SHORT=2" "-DSIZEOF_SSIZE_T=8" "-DSIZEOF_SIZE_T=8" "-DSIZEOF_LONG=8" "-o" "/Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-b1e6a325f3f5a8d4/out/build/curl/lib/content_encoding.o" "-c" "curl/lib/content_encoding.c"
exit status: 0
exit status: 0
--- stderr
fatal: not a git repository (or any of the parent directories): .git
error occurred: Command "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-arch" "x86_64" "-I" "curl/lib" "-I" "curl/include" "-I" "/Users/jianshuzhao/Github/flopp/target/release/build/libz-sys-610a7a9617da6dd8/out/include" "-fvisibility=hidden" "-DBUILDING_LIBCURL" "-DCURL_DISABLE_CRYPTO_AUTH" "-DCURL_DISABLE_DICT" "-DCURL_DISABLE_GOPHER" "-DCURL_DISABLE_IMAP" "-DCURL_DISABLE_LDAP" "-DCURL_DISABLE_LDAPS" "-DCURL_DISABLE_NTLM" "-DCURL_DISABLE_POP3" "-DCURL_DISABLE_RTSP" "-DCURL_DISABLE_SMB" "-DCURL_DISABLE_SMTP" "-DCURL_DISABLE_TELNET" "-DCURL_DISABLE_TFTP" "-DCURL_STATICLIB" "-DENABLE_IPV6" "-DHAVE_ASSERT_H" "-DOS="unknown"" "-DHAVE_ZLIB_H" "-DHAVE_LIBZ" "-DHAVE_GETADDRINFO" "-DHAVE_GETPEERNAME" "-DHAVE_GETSOCKNAME" "-DUSE_UNIX_SOCKETS" "-DHAVE_SYS_UN_H" "-DUSE_SECTRANSP" "-DHAVE_BUILTIN_AVAILABLE=1" "-D__APPLE__" "-Dmacintosh" "-DHAVE_MACH_ABSOLUTE_TIME" "-DRECV_TYPE_ARG1=int" "-DHAVE_PTHREAD_H" "-DHAVE_ARPA_INET_H" "-DHAVE_ERRNO_H" "-DHAVE_FCNTL_H" "-DHAVE_NETDB_H" "-DHAVE_NETINET_IN_H" "-DHAVE_POLL_FINE" "-DHAVE_POLL_H" "-DHAVE_FCNTL_O_NONBLOCK" "-DHAVE_SYS_SELECT_H" "-DHAVE_SYS_STAT_H" "-DHAVE_UNISTD_H" "-DHAVE_RECV" "-DHAVE_SELECT" "-DHAVE_SEND" "-DHAVE_SOCKET" "-DHAVE_STERRROR_R" "-DHAVE_SOCKETPAIR" "-DHAVE_STRUCT_TIMEVAL" "-DUSE_THREADS_POSIX" "-DRECV_TYPE_ARG2=void*" "-DRECV_TYPE_ARG3=size_t" "-DRECV_TYPE_ARG4=int" "-DRECV_TYPE_RETV=ssize_t" "-DSEND_QUAL_ARG2=const" "-DSEND_TYPE_ARG1=int" "-DSEND_TYPE_ARG2=void*" "-DSEND_TYPE_ARG3=size_t" "-DSEND_TYPE_ARG4=int" "-DSEND_TYPE_RETV=ssize_t" "-DSIZEOF_CURL_OFF_T=8" "-DSIZEOF_INT=4" "-DSIZEOF_SHORT=2" "-DSIZEOF_SSIZE_T=8" "-DSIZEOF_SIZE_T=8" "-DSIZEOF_LONG=8" "-o" "/Users/jianshuzhao/Github/flopp/target/release/build/curl-sys-b1e6a325f3f5a8d4/out/build/curl/lib/connect.o" "-c" "curl/lib/connect.c" with args "cc" did not execute successfully (status code exit status: 1).
warning: build failed, waiting for other jobs to finish...
error: build failed
Is that because the MacOS default curl library is not supported, we have to use the gnu curl using home-brew. I do not have errors on Linux
thanks,
Jianshu
Hi Jianshu,
Thanks for submitting this issue. Unfortunately I don't have access to a computer with macOS right now and am not an expert with macOS. Here are some thoughts:
From some googling, it seems like there's an issue with detecting the __builtin_available() function which is part of clang/xcode.
It also seems rust wasn't able to detect Xcode: "unable to determine Xcode version, assuming >= 9".
Maybe look at the thread here: I found an issue here: curl/curl#2651 and try the following:
"If you're using macOS 10.13.x, then make sure you have Xcode 9.x installed. __builtin_available() is an Xcode 9.x addition, and neither Apple nor libcurl support running Xcode 8.x under macOS 10.13.x.
If you do have Xcode 9.x installed, then try running "xcode-select --install" to make sure you have the latest command line developer tools installed."