[MacPorts] #66574: lenstool @7.1.1 fails to build with recent Xcode

[MacPorts]

#66574: lenstool @7.1.1 fails to build with recent Xcode
--------------------+----------------------
 Reporter:  jmroot  |      Owner:  ejullo
     Type:  defect  |     Status:  assigned
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:
 Keywords:          |       Port:  lenstool
--------------------+----------------------
 Implicit declaration errors:
 {{{
 o_pixsource.c:33:6: error: implicitly declaring library function 'strcmp'
 with type 'int (const char *, const char *)' [-Werror,-Wimplicit-function-
 declaration]
         if( strcmp(M.centerfile, "") )
             ^
 o_pixsource.c:33:6: note: include the header <string.h> or explicitly
 provide a declaration for 'strcmp'
 o_pixsource.c:161:3: error: implicit declaration of function 'd_rbf' is
 invalid in C99 [-Werror,-Wimplicit-function-declaration]
                 d_rbf(source, ps.nx, ps.ny, 1.);
                 ^
 2 errors generated.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/66574>
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