Building druntime on MAC OS X

[Jacob Carlborg]

On 2013-11-16 16:39, Andrew Edwards wrote:

> You nailed it. It is in the dmd.conf file. Its content is this:
>
>       [Environment]
>       DFLAGS=-L--export-dynamic -I%@P%/../import -L-L%@P%/../lib -L-lrt
>
> It is generated automatically from src/dmd.conf.default while building
> dmd as such:
>
>       make -f posix.mak install

I see. I have never used "install" for DMD before. dmd.conf shipping in 
the zip does not have -L--export-dynamic.

> Here is the explanation from man ld of the Mac OS X equivalent:
>
>     -export_dynamic
>             Preserves all global symbols in main executables during LTO.
>             Without this option, Link Time Optimization is allowed to
>             inline and remove global functions. This option is used when
>             a main executable may load a plug-in which requires certain
>             symbols from the main executable.
>
> Not sure what -lrt is thought. It is not defined in the man pages, does
> not affect building of the libraries (druntime or phobos) but bombs out
> while building the tools.

It's liking with the "rt" library. That is, librt.dylib or librt.a. This 
is neither used on Mac OS X. I'm guessing "make -f posix.mak install" 
will generate a dmd.conf file for Linux.

-- 
/Jacob Carlborg