我使用brew安装了gcc,因为我需要安装brew的Fortran软件包。似乎brew install gcc
安装的gcc包不支持mdll
标志。如何安装正确版本的Fortran和gcc?
$ which gcc
/usr/local/bin/gcc
$ gcc --version
gcc (GCC) 4.9.2 20141029 (prerelease)
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ gcc -mdll
gcc: error: unrecognized command line option ‘-mdll’
gcc: fatal error: no input files
compilation terminated.
答案 0 :(得分:1)
根据gcc(1)
联机帮助页:
-mdll
This option is available for Cygwin and MinGW targets. It
specifies that a DLL---a dynamic link library---is to be generated,
enabling the selection of the required runtime startup object and
entry point.
由于OS X不是Cygwin或MinGW,因此可以安全地假设GCC的任何版本都不会在OS X上启用它。
如果您正在尝试构建动态链接对象(UNIX术语中的“共享对象”),请查看-dynamic
/ -dynamiclib
标志。它们似乎是OS X的粗略等价物。