Undefined symbol "_environ", referenced from: _CPLSpawnAsync in cpl_spawn.o

[peifer]

The most recent change in cpl_spawn.cpp [26316] results into a regression for Mac OSX, see (1), (2) and (3). My installation finishes successfully after reverting this change locally.

(1)

...
libtool: link: /usr/bin/clang++ -dynamiclib -o .libs/libgdal.1.dylib ...
clang: warning: argument unused during compilation: '-pthread'
Undefined symbols for architecture x86_64:
  "_environ", referenced from:
      _CPLSpawnAsync in cpl_spawn.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: *** [libgdal.la] Error 1
make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_gis_gdal/gdal/work/gdal-1.10.1'
make: *** [check-lib] Error 2

(2) ​https://build.macports.org/builders/buildports-lion-x86_64/builds/13866/steps/compile/logs/stdio

(3) ​https://build.macports.org/builders/buildports-snowleopard-x86_64/builds/20226/steps/compile/logs/stdio

[peifer]

It looks my ticket is related to ticket:5197

[peifer]

This is indeed a duplicate of #5197