[MacPorts] #45623: realpath fails to build with gcc

[MacPorts]

#45623: realpath fails to build with gcc
--------------------------+----------------------------
 Reporter:  ryandesign@…  |      Owner:  dev.modprobe@…
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.3.2
 Keywords:                |       Port:  realpath
--------------------------+----------------------------
 realpath 1.0.0 fails to build on OS X 10.6 with its gcc-4.2 compiler:

 https://build.macports.org/builders/buildports-snowleopard-
 x86_64/builds/30847/steps/compile/logs/stdio

 {{{
 /usr/bin/gcc-4.2 -arch x86_64 -o realpath realpath.c -Werror -Wextra
 realpath.c:41: error: expected ‘;’, ‘,’ or ‘)’ before ‘stream’
 realpath.c:104: error: expected ‘;’, ‘,’ or ‘)’ before ‘stream’
 }}}

 According to wikipedia, [http://en.wikipedia.org/wiki/Restrict restrict]
 was introduced in C99, so the first thing I'd try to fix this would be to
 specify in the makefile that C99 should be used. C99 is the default for
 clang, but C89 is the default for the gcc used on 10.6 and earlier.

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Ticket URL: <https://trac.macports.org/ticket/45623>
MacPorts <https://www.macports.org/>
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