Build broken due to -lpthread

[Gerald Pfeifer]

[ I'm Cc:ing Julian Elischer, who is one of the FreeBSD experts on
  threading.  Julian, at http://www.winehq.org/hypermail/wine-devel/2003/08/0401.html
  you'll find the original three messages on this. ]

On Wed, 20 Aug 2003, Alexandre Julliard wrote:
>> Wine fails to build on FreeBSD 4.8 with the following failure mode:
>>
>>   /usr/bin/gcc -c -I. -I. -I../../include -I../../include -I/usr/X11R6/include -D_REENTRANT -fPIC -D__WINESRC__  -Wall -mpreferred-stack-boundary=2 -fno-strict-aliasing -gstabs+ -Wpointer-arith  -g -O2 -o glu32.spec.o glu32.spec.c
>>   /usr/bin/gcc -shared  -Wl,-Bsymbolic,-z,defs glu32.spec.o    glu.o
>>     glu32.dll.dbg.o -o glu32.dll.so -L../../dlls  -L../../libs/wine -lwine
>>     -L/usr/X11R6/lib  -lSM -lICE -lXxf86dga -lXxf86vm -lXv -lXext -lX11
>>     -lGL -lGLU -lpthread -L../../libs/port -lwine_port  -lm  -lc
>>    /usr/libexec/elf/ld: cannot find -lpthread
> So what's the right way to link with libpthread on FreeBSD?

Wine builds fine if I just omit the -lpthread line above.

man pthread, however, notes the following (both FreeBSD 4.8 and 5.1):

   The current FreeBSD POSIX thread implementation is built in the library
   libc_r which contains both thread-safe libc functions and the thread
   functions.  This library replaces libc for threaded applications.

   A FreeBSD specific option has been added to gcc to make linking threaded
   processes simple.  gcc -pthread links a threaded process against libc_r
   instead of libc.

So perhaps we ought to use -lc_r instead of -lc and omit -lpthread on
FreeBSD (or use -pthread)?

Gerald
-- 
Gerald Pfeifer (Jerry)   gerald at pfeifer.com   http://www.pfeifer.com/gerald/