[MacPorts] #62433: pulseaudio install fails

[MacPorts]

#62433: pulseaudio install fails
--------------------+------------------------
 Reporter:  jghub   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.6.4
 Keywords:          |       Port:  pulseaudio
--------------------+------------------------
 upgrade fails. from the config.log:


 {{{
    2299 configure:10349: checking whether C compiler accepts -std=gnu11
    2300 configure:10369: /usr/bin/clang -c -pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -arch
 x86_64 -pedantic -Werror -std=gnu11 -I/opt/local/include
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
 conftest.c >&5
    2301 conftest.c:74:9: error: '_DARWIN_C_SOURCE' macro redefined
 [-Werror,-Wmacro-redefined]
    2302 #define _DARWIN_C_SOURCE 200112L
    2303         ^
    2304 conftest.c:50:9: note: previous definition is here
    2305 #define _DARWIN_C_SOURCE 1
    2306         ^
    2307 1 error generated.
 }}}

 as ryan schmidt explained to me on the mailing list:

 "The configure test fails to do what it was trying to do because it
 redefines a macro, which is usually accepted with a warning, but it
 requests that warnings be turned into errors by using -Werror.

 autoconf 2.71 caused this problem to appear. autoconf 2.69 didn't first
 define _DARWIN_C_SOURCE to 1 but autoconf 2.71 does.

 The autoconf 2.70 release notes specifically state that "Running configure
 tests with warnings promoted to errors is not supported."

 observed with OSX 10.15.7

-- 
Ticket URL: <https://trac.macports.org/ticket/62433>
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