[MacPorts] #42152: libbiosig: fails to build on snow leopard (Undefined symbols: _getline)

[MacPorts]

#42152: libbiosig: fails to build on snow leopard (Undefined symbols: _getline)
------------------------+---------------------------------------
  Reporter:  mojca@…    |      Owner:  christsc@…
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  snowleopard leopard tiger
      Port:  libbiosig  |
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Comment (by christsc@…):

 Replying to [comment:14 mojca@…]:
 > Before I commit anything: can you please explain me how the patch works?
 >
 > What does the following do?
 > {{{
 > COMMAND ${GAWK} -f annotatedECG.awk extern/11073-10102-AnnexB.txt >
 "11073-10102-AnnexB.i"
 > }}}

 It generates some C definitions from a text description of IEEE Std
 11073-10102-2012 (annotated ECG description) according to awk rules in
 `annotatedECG.awk`. This has already been added to the Linux `Makefile`
 (l.448) but hasn't made into cmake in time for release 1.5.10. I've
 committed it to the biosig repo so it will be included in release 1.5.11.

 > and why is
 > {{{
 > #ifdef MACPORTS
 > }}}
 > needed? What does `#include <unistd.h>` do and where does that file come
 from? `/usr/include/unistd.h` or from `/opt/local/sowhere/else`?

 In Snow Leopard, `ssize_t` is defined in `/usr/include/unistd.h`. On
 Linux, including `stdio.h` seems to be sufficient to get `ssize_t`. I've
 committed this to the biosig repo as well so that this patch won't be
 necessary in 1.5.11

 >
 > I can commit it nonetheless, but I would like to roughly understand what
 I'm doing.

 Fair enough.

-- 
Ticket URL: <https://trac.macports.org/ticket/42152#comment:16>
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