go build_error ai_generated true

undefined symbol: some_function

ID: go/cgo-undefined-symbol

Also available as: JSON · Markdown · 中文
80%Fix Rate
85%Confidence
0Evidence
2024-02-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.21 active — — —
1.22 active — — —

Root Cause

C function declared in Go with `// #include` but not linked or defined in any linked library.

generic

中文

在Go中通过`// #include`声明了C函数，但该函数在链接的库中未定义或未链接。

Workarounds

  1. 85% success Explicitly link the correct library with full path 
    // #cgo LDFLAGS: -L/usr/local/lib -lfoo
// #include <foo.h>
import "C"
  2. 75% success Define the missing function in a C source file and compile together 
    Create a .c file next to Go code, then `go build` will compile it.

Dead Ends

Common approaches that don't work:

  1. Adding `// #cgo LDFLAGS: -lfoo` without verifying library path 60% fail

    Library may be in non-standard location or misspelled.

  2. Reordering C code in the same file 90% fail

    Does not resolve missing external symbol.