Adding -lc when linking?

[Patrik Stridvall]

> Gerald Pfeifer <pfeifer at dbai.tuwien.ac.at> writes:
> 
> > How should this be solved (in a portable way)?
> 
> Adding -lc seems the right way. In fact I committed that fix last
> night ;-)

Yes I noticed. :-)

However, it doesn't seem to be the 100% correct fix.
DLLs using pthreads like the ones depending on OpenGL 
needs to link with -lc_r instead of -lc on FreeBSD.

---8<---

gcc -shared  -Wl,-Bsymbolic,-z,defs d3d8.spec.o    basetexture.o
cubetexture.o d3d8_main.o device.o directx.o indexbuffer.o resource.o
surface.o swapchain.o texture.o vertexbuffer.o volume.o volumetexture.o
d3d8.dll.dbg.o -o d3d8.dll.so -L../../dlls  -L../../library -lwine
-L../../ole -lwine_uuid  -L/usr/X11R6/lib  -lSM -lICE -lXxf86dga -lXxf86vm
-lXv -lXext -lX11  -lGL -lGLU -lm -lc
/usr/lib/libgcc.a(_eh.o): In function `__empty':
_eh.o(.text+0x9e): undefined reference to `pthread_setspecific'
/usr/lib/libgcc.a(_eh.o): In function `__get_eh_info':
_eh.o(.text+0xec): undefined reference to `pthread_key_create'
_eh.o(.text+0x1b9): undefined reference to `pthread_getspecific'
_eh.o(.text+0x1d8): undefined reference to `pthread_setspecific'
/usr/lib/libgcc.a(frame.o)(.text+0x44b): undefined reference to
`pthread_mutex_lock'
/usr/lib/libgcc.a(frame.o)(.text+0x492): undefined reference to
`pthread_mutex_unlock'
/usr/lib/libgcc.a(frame.o): In function `__register_frame_info':
frame.o(.text+0x8d9): undefined reference to `pthread_mutex_lock'
frame.o(.text+0x900): undefined reference to `pthread_mutex_unlock'
/usr/lib/libgcc.a(frame.o): In function `__register_frame_info_table':
frame.o(.text+0x969): undefined reference to `pthread_mutex_lock'
frame.o(.text+0x990): undefined reference to `pthread_mutex_unlock'
/usr/lib/libgcc.a(frame.o): In function `__deregister_frame_info':
frame.o(.text+0x9dc): undefined reference to `pthread_mutex_lock'
frame.o(.text+0xa27): undefined reference to `pthread_mutex_unlock'
frame.o(.text+0xa4d): undefined reference to `pthread_mutex_unlock'
*** Error code 1