[MacPorts] #28803: boehmgc 7.1 failed to build on leopard x86_64

[MacPorts]

#28803: boehmgc 7.1 failed to build on leopard x86_64
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 Reporter:  dtakahashi42@…          |       Owner:  macports-tickets@…                   
     Type:  defect                  |      Status:  new                                  
 Priority:  Normal                  |   Milestone:                                       
Component:  ports                   |     Version:  1.9.2                                
 Keywords:                          |        Port:  boehmgc                              
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 Since `_NONSTD_SOURCE` (enabled for platform darwine 9) is incompatible
 with `__LP64__`, boehmgc failed to build when x86_64 is enabled.
 {{{
 :info:build  /usr/bin/gcc-4.0 -DPACKAGE_NAME=\"gc\"
 -DPACKAGE_TARNAME=\"gc\" -DPACKAGE_VERSION=\"7.1\" "-DPACKAGE_STRING=\"gc
 7.1\"" -DPACKAGE_BUGREPORT=\"Hans.Boehm at hp.com\" -DGC_VERSION_MAJOR=7
 -DGC_VERSION_MINOR=1 -DPACKAGE=\"gc\" -DVERSION=\"7.1\"
 -DGC_DARWIN_THREADS=1 -DTHREAD_LOCAL_ALLOC=1 -DHAVE_DLFCN_H=1
 -DNO_EXECUTE_PERMISSION=1 -DALL_INTERIOR_POINTERS=1 -DGC_GCJ_SUPPORT=1
 -DJAVA_FINALIZATION=1 -DATOMIC_UNCOLLECTABLE=1 -I./include
 -I/opt/local/include -fexceptions -I libatomic_ops/src -pipe -O2
 -D_NONSTD_SOURCE -arch i386 -arch x86_64 -c allchblk.c  -fno-common -DPIC
 -o .libs/allchblk.o
 :info:build In file included from /usr/include/sys/_types.h:32,
 :info:build                  from /usr/include/_types.h:27,
 :info:build                  from /usr/include/stdio.h:64,
 :info:build                  from allchblk.c:18:
 :info:build /usr/include/sys/cdefs.h:275:8: error: #error "Can't define
 both _NONSTD_SOURCE and any of _DARWIN_C_SOURCE, _XOPEN_SOURCE,
 _POSIX_C_SOURCE, or __LP64__"
 }}}

 Some manual compilations with different flags shows that a declaration of
 `_XOPEN_SOURCE` instead of `_NONSTD_SOURCE` (same as platform darwin 10)
 solved this problem on i386 and x86_64. However, to build with `-arch ppc`
 seems to require `_NONSTD_SOURCE`, not `_XOPEN_SOURCE` (because I don't
 have ppc mac, I can check only a build phase).

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Ticket URL: <https://trac.macports.org/ticket/28803>
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