[polyml] _environ not found in polyml applications on Mac

Hello,

poly builds and runs fine on mac, but standalone applications do not work (on OSX 10.6.8, at least). When running aplications, one gets:

dyld: Symbol not found: _environ Referenced from: / ... /lib/libpolyml.4.dylib Expected in: flat namespace in / ... /lib/libpolyml.4.dylib Trace/BPT trap

It happens that variable environ cannot be accessed directly from shared libraries; there is a paragraph about that in the environ(7) man page (last paragraph).

The fix is to replace in file libpolyml/process_env.cpp

the line:

extern char **environ;

by:

#if __APPLE__ #include <crt_externs.h> #define environ (*_NSGetEnviron()) #else extern char **environ; #endif

Best, Bernard.