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Ask questions"ld: symbol(s) not found for architecture x86_64" Go unable to run on macOS with a conda init

<!-- Please answer these questions before submitting your issue. Thanks! -->

What version of Go are you using (go version)?

<pre> $ go version go version go1.12.5 darwin/amd64 </pre>

Does this issue reproduce with the latest release?

Yes.

What operating system and processor architecture are you using (go env)?

<details><summary><code>go env</code>

GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/pmende/Library/Caches/go-build"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/pmende/go"
GOPROXY=""
GORACE=""
GOROOT="/usr/local/Cellar/go/1.12.5/libexec"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.12.5/libexec/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/2l/yl2hn_n12h5fk7m_snww1t1m_gtc_2/T/go-build272458021=/tmp/go-build -gno-record-gcc-switches -fno-common"

</summary><br><pre> $ go env

</pre></details>

What did you do?

I ran go get golang.org/x/tools/cmd/godoc <!--

-->

What did you expect to see?

I expected it to work.

What did you see instead?

# runtime/cgo
ld: warning: ld: warning: ignoring file /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/lib/libpthread.tbd, file was built for unsupported file format ( 0x2D 0x2D 0x2D 0x20 0x21 0x74 0x61 0x70 0x69 0x2D 0x74 0x62 0x64 0x2D 0x76 0x33 ) which is not the architecture being linked (x86_64): /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/lib/libpthread.tbdignoring file /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/lib/libSystem.tbd, file was built for unsupported file format ( 0x2D 0x2D 0x2D 0x20 0x21 0x74 0x61 0x70 0x69 0x2D 0x74 0x62 0x64 0x2D 0x76 0x33 ) which is not the architecture being linked (x86_64): /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/lib/libSystem.tbd

Undefined symbols for architecture x86_64:
  "___stack_chk_fail", referenced from:
      _x_cgo_init in _x004.o
      __cgo_sys_thread_start in _x004.o
  "___stack_chk_guard", referenced from:
      _x_cgo_init in _x004.o
      __cgo_sys_thread_start in _x004.o
  "___stderrp", referenced from:
      __cgo_sys_thread_start in _x004.o
      _x_cgo_sys_thread_create in _x005.o
      _x_cgo_thread_start in _x008.o
  "_abort", referenced from:
      __cgo_sys_thread_start in _x004.o
      _x_cgo_sys_thread_create in _x005.o
      _x_cgo_thread_start in _x008.o
  "_fprintf", referenced from:
      __cgo_sys_thread_start in _x004.o
      _x_cgo_sys_thread_create in _x005.o
  "_free", referenced from:
      _threadentry in _x004.o
  "_fwrite", referenced from:
      _x_cgo_thread_start in _x008.o
  "_malloc", referenced from:
      _x_cgo_thread_start in _x008.o
  "_nanosleep", referenced from:
      _x_cgo_sys_thread_create in _x005.o
      __cgo_try_pthread_create in _x005.o
  "_pthread_attr_destroy", referenced from:
      _x_cgo_init in _x004.o
  "_pthread_attr_getstacksize", referenced from:
      _x_cgo_init in _x004.o
      __cgo_sys_thread_start in _x004.o
  "_pthread_attr_init", referenced from:
      _x_cgo_init in _x004.o
      __cgo_sys_thread_start in _x004.o
  "_pthread_cond_broadcast", referenced from:
      _x_cgo_notify_runtime_init_done in _x005.o
  "_pthread_cond_wait", referenced from:
      __cgo_wait_runtime_init_done in _x005.o
  "_pthread_create", referenced from:
      _x_cgo_sys_thread_create in _x005.o
      __cgo_try_pthread_create in _x005.o
     (maybe you meant: __cgo_try_pthread_create)
  "_pthread_detach", referenced from:
      _x_cgo_sys_thread_create in _x005.o
      __cgo_try_pthread_create in _x005.o
  "_pthread_mutex_lock", referenced from:
      __cgo_wait_runtime_init_done in _x005.o
      _x_cgo_notify_runtime_init_done in _x005.o
      _x_cgo_set_context_function in _x005.o
      __cgo_get_context_function in _x005.o
  "_pthread_mutex_unlock", referenced from:
      __cgo_wait_runtime_init_done in _x005.o
      _x_cgo_notify_runtime_init_done in _x005.o
      _x_cgo_set_context_function in _x005.o
      __cgo_get_context_function in _x005.o
  "_pthread_sigmask", referenced from:
      __cgo_sys_thread_start in _x004.o
  "_setenv", referenced from:
      _x_cgo_setenv in _x006.o
     (maybe you meant: _x_cgo_setenv)
  "_strerror", referenced from:
      __cgo_sys_thread_start in _x004.o
      _x_cgo_sys_thread_create in _x005.o
  "_unsetenv", referenced from:
      _x_cgo_unsetenv in _x006.o
     (maybe you meant: _x_cgo_unsetenv)
ld: symbol(s) not found for architecture x86_64
clang-4.0: error: linker command failed with exit code 1 (use -v to see invocation)

I've encountered people facing the same issues. I have the following in my .bash_profile:

# >>> conda initialize >>>
# !! Contents within this block are managed by 'conda init' !!
__conda_setup="$('/Users/pmende/anaconda3/bin/conda' 'shell.bash' 'hook' 2> /dev/null)"
if [ $? -eq 0 ]; then
    eval "$__conda_setup"
else
    if [ -f "/Users/pmende/anaconda3/etc/profile.d/conda.sh" ]; then
        . "/Users/pmende/anaconda3/etc/profile.d/conda.sh"
    else
        export PATH="/Users/pmende/anaconda3/bin:$PATH"
    fi
fi
unset __conda_setup
# <<< conda initialize <<<

If I remove it, I can run go get <module>. Breaking/uninstalling my conda install is not a professional or desirable solution to this problem. How can I point go to a more appropriate clang?

golang/go

Answer questions PMende

I've resolved the issue by adding an export CC=/usr/bin/clang to my ~/.bash_profile.

useful!
source:https://uonfu.com/
answerer
Patrick Mende PMende Seattle, WA Data scientist formally trained in physics.
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