space.c GCTPC prototypes conflict with GCTPC 2.0 #13

What steps will reproduce the problem?
1. Build lndsr with http://edcftp.cr.usgs.gov/pub/software/gctpc/gctpc20.tar
2.
3.

What is the expected output? What do you see instead?

I get the error:

INFO: From Compiling third_party/ledaps/lndsr/space.c:
third_party/ledaps/lndsr/space.c:101:5: error: conflicting types for 'for_init'
int for_init( int outsys, int outzone, double *outparm, int outdatum,
    ^
third_party/gctpc/source/proj.h:164:6: note: previous declaration is here
void for_init(long outsys, long outzone, double *outparm, long outspheroid,
     ^
third_party/ledaps/lndsr/space.c:104:5: error: conflicting types for 'inv_init'
int inv_init( int insys, int inzone, double *inparm, int indatum,
    ^
third_party/gctpc/source/proj.h:197:6: note: previous declaration is here
void inv_init(long insys, long inzone, double *inparm, long inspheroid,
     ^
2 errors generated.


What version of the product are you using? On what operating system?

LEDAPS (r122) on 64bit Linux. 


Please provide any additional information below.