[MacPorts] #36214: Windowmaker @0.92.0 compile error png lib problem on Mac OS X 10.6.8 (Snow Leopard)

[MacPorts]

#36214: Windowmaker @0.92.0 compile error png lib problem on Mac OS X 10.6.8 (Snow
Leopard)
--------------------------+--------------------------------
  Reporter:  martini@…    |      Owner:  macports-tickets@…
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.1.2
Resolution:               |   Keywords:  Windowmaker png
      Port:  Windowmaker  |
--------------------------+--------------------------------

Comment (by martini@…):

 I found a workaround.[[BR]]
 The problem is caused by a change in the png struct png_info which was
 removed in modern versions of libpng.[[BR]]
 Documented in: http://stackoverflow.com/questions/10507610/libpng-1-5-10
 -error-dereferencing-pointer-to-incomplete-type [[BR]]

 {{{
 The png_info struct was removed from the png.h in 1.5.0 and now you should
 use this pointer with the png_get_* and png_set_* functions.
 The png_info structure is designed to provide information about the PNG
 file. At one time, the fields of png_info were intended to be directly
 accessible to the user. However, this tended to cause problems with
 applications using dynamically loaded libraries, and as a result a set of
 interface functions for png_info (the png_get_*() and png_set_*()
 functions) was developed, and direct access to the png_info fields was
 deprecated..
 }}}

 So when libpng was upgraded to @1.5.12 all ports that depend on png_info
 broke.  I found that libpng Revision 96302 is at version @1.4.12 which
 still has png_info.
 I downloaded the Portfile from
 https://trac.macports.org/browser/trunk/dports/graphics/libpng/Portfile?rev=96302
 and build the old version of libpng and then windowmaker compiles just
 fine.[[BR]]

 Windomaker should be patched in macports to account for the changes in
 1.5.12, and probably should be changed in the original source as
 well.[[BR]]

-- 
Ticket URL: <https://trac.macports.org/ticket/36214#comment:1>
MacPorts <http://www.macports.org/>
Ports system for Mac OS