The threading library must be linked to the binaries
using a special linker flag -pthread
on
FreeBSD. If a port insists on linking
-lpthread
or -lc_r
directly, patch it to use PTHREAD_LIBS
variable provided by the ports framework. This variable
usually has the value of -pthread
, but
on certain architectures and FreeBSD versions it can have
different values, so do not just hardcode
-pthread
into patches and always use
PTHREAD_LIBS
.
If building the port errors out with unrecognized
option '-pthread'
when setting
PTHREAD_LIBS
, it may be desirable to use
gcc
as linker by setting
CONFIGURE_ENV
to LD=${CC}
.
The -pthread
option is not supported by
ld
directly.
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