[MacPorts] #70497: glpong @1.3: error: incomplete definition of type 'struct png_struct_def' (was: glpong @1.3 install failed)

[MacPorts]

#70497: glpong @1.3: error: incomplete definition of type 'struct png_struct_def'
----------------------------+--------------------
  Reporter:  doomed-theory  |      Owner:  (none)
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  glpong         |
----------------------------+--------------------
Changes (by ryandesign):

 * port:  GLPong => glpong


Old description:

> {{{Warning: reinplace s|-lGLU||g didn't change anything in}}}
> {{{/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_games_glpong/glpong/work/glpong-1.3/src/Makefile}}}
> {{{Warning: reinplace s|-lGL||g didn't change anything in
> /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_games_glpong/glpong/work/glpong-1.3/src/Makefile}}}
>
> {{{--->  Building glpong}}}
>
> {{{Error: Failed to build glpong: command execution failed}}}

New description:

 {{{
 Warning: reinplace s|-lGLU||g didn't change anything in
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_games_glpong/glpong/work/glpong-1.3/src/Makefile
 Warning: reinplace s|-lGL||g didn't change anything in
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_games_glpong/glpong/work/glpong-1.3/src/Makefile
 --->  Building glpong
 Error: Failed to build glpong: command execution failed
 }}}

--

Comment:

 The error in the log is:

 {{{
 image.c:87:42: error: incomplete definition of type 'struct
 png_struct_def'
 }}}

 So glpong is not compatible with libpng 1.5 or later, which we have had in
 MacPorts for a long time already, so this port has been broken for a long
 time.

 #59554 is an example of this problem in another port and how it can be
 fixed.

-- 
Ticket URL: <https://trac.macports.org/ticket/70497#comment:1>
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