如何在osx上使用clang编译共享库

源文件

rsetti::fastidio { /tmp }-> cat foo.c #include  void ACFunction() { printf("ACFunction()\n"); AGoFunction(); } 

编译共享库

 rsetti::fastidio { /tmp }-> clang -shared -o libfoo.so foo.c foo.c:4:3: warning: implicit declaration of function 'AGoFunction' is invalid in C99 [-Wimplicit-function-declaration] AGoFunction(); ^ 1 warning generated. Undefined symbols for architecture x86_64: "_AGoFunction", referenced from: _ACFunction in foo-lFDQ4g.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) rsetti::fastidio { /tmp }-> 

linux + gcc上的相同代码可以轻松编译。

Answer 1

通过使用：

 -Wl,-undefined -Wl,dynamic_lookup 

要么

 clang -shared -undefined dynamic_lookup -o libfoo.so foo.c 

似乎保持了GCC的相同行为。