Linking a C program with D library

[Joe]

I'm attempting a piecemeal conversion of some C programs. I've 
converted a few that depend on C modules that are in a library 
and now I'm sort of in the middle of converting those C modules. 
One of them has an array of strings, i.e., array of char*, which 
most easily translated to D's string[]. However, the array is 
used by a function that expects a const char*, so I had to use 
toStringz to pass those values.

Now there are some C programs that haven't been converted yet, 
but they depend on the function above. When linking those 
programs, the linker complains about an undefined reference to 
the mangled name of std.string.toStringz.

What is the most appropriate way around this? Is there a way to 
declare an array of const char* and initialize it to literal 
strings? Or can the mangled name (and Phobos library) somehow be 
made visible to the linker?