littlecat@littlecat-HP-15-Notebook-PC:~/Dev/SRB2$ make -C src LINUX64=1
make: Entering directory `/home/littlecat/Dev/SRB2/src'
Creating dependency file, depend.dep
Created dependency file, depend.dep
make: Leaving directory `/home/littlecat/Dev/SRB2/src'
make: Entering directory `/home/littlecat/Dev/SRB2/src'
In file included from /usr/include/libpng12/png.h:536:0,
                 from hardware/hw_draw.c:700:
/usr/include/zlib.h:1673:5: error: unknown type name ‘off64_t’
     z_off64_t pos;
     ^
/usr/include/zlib.h:1693:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
    ^
In file included from /usr/include/zlib.h:34:0,
                 from /usr/include/libpng12/png.h:536,
                 from hardware/hw_draw.c:700:
/usr/include/zlib.h:1693:51: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
                                                   ^
In file included from /usr/include/libpng12/png.h:536:0,
                 from hardware/hw_draw.c:700:
/usr/include/zlib.h:1694:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
    ^
/usr/include/zlib.h:1695:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
    ^
In file included from /usr/include/zlib.h:34:0,
                 from /usr/include/libpng12/png.h:536,
                 from hardware/hw_draw.c:700:
/usr/include/zlib.h:1696:62: error: unknown type name ‘off64_t’
    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
                                                              ^
/usr/include/zlib.h:1697:60: error: unknown type name ‘off64_t’
    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
                                                            ^
make: *** [../objs/Linux64/SDL/Release/hw_draw.o] Error 1
make: Leaving directory `/home/littlecat/Dev/SRB2/src'
littlecat@littlecat-HP-15-Notebook-PC:~/Dev/SRB2$ make -k -C src LINUX64=1
make: Entering directory `/home/littlecat/Dev/SRB2/src'
In file included from /usr/include/libpng12/png.h:536:0,
                 from hardware/hw_draw.c:700:
/usr/include/zlib.h:1673:5: error: unknown type name ‘off64_t’
     z_off64_t pos;
     ^
/usr/include/zlib.h:1693:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
    ^
In file included from /usr/include/zlib.h:34:0,
                 from /usr/include/libpng12/png.h:536,
                 from hardware/hw_draw.c:700:
/usr/include/zlib.h:1693:51: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
                                                   ^
In file included from /usr/include/libpng12/png.h:536:0,
                 from hardware/hw_draw.c:700:
/usr/include/zlib.h:1694:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
    ^
/usr/include/zlib.h:1695:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
    ^
In file included from /usr/include/zlib.h:34:0,
                 from /usr/include/libpng12/png.h:536,
                 from hardware/hw_draw.c:700:
/usr/include/zlib.h:1696:62: error: unknown type name ‘off64_t’
    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
                                                              ^
/usr/include/zlib.h:1697:60: error: unknown type name ‘off64_t’
    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
                                                            ^
make: *** [../objs/Linux64/SDL/Release/hw_draw.o] Error 1
hardware/hw_main.c: In function ‘HWR_RenderPolyObjectPlane’:
hardware/hw_main.c:2654:3: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘size_t’ [-Wformat=]
   CONS_Debug(DBG_RENDER, "polygon size of %d exceeds max value of %d vertices\n", nrPlaneVerts, UINT16_MAX);
   ^
In file included from /usr/include/libpng12/png.h:536:0,
                 from hardware/hw_md2.c:60:
/usr/include/zlib.h:1673:5: error: unknown type name ‘off64_t’
     z_off64_t pos;
     ^
/usr/include/zlib.h:1693:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
    ^
In file included from /usr/include/zlib.h:34:0,
                 from /usr/include/libpng12/png.h:536,
                 from hardware/hw_md2.c:60:
/usr/include/zlib.h:1693:51: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
                                                   ^
In file included from /usr/include/libpng12/png.h:536:0,
                 from hardware/hw_md2.c:60:
/usr/include/zlib.h:1694:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
    ^
/usr/include/zlib.h:1695:4: error: unknown type name ‘off64_t’
    ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
    ^
In file included from /usr/include/zlib.h:34:0,
                 from /usr/include/libpng12/png.h:536,
                 from hardware/hw_md2.c:60:
/usr/include/zlib.h:1696:62: error: unknown type name ‘off64_t’
    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
                                                              ^
/usr/include/zlib.h:1697:60: error: unknown type name ‘off64_t’
    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
                                                            ^
make: *** [../objs/Linux64/SDL/Release/hw_md2.o] Error 1
make: Target `all' not remade because of errors.
make: Leaving directory `/home/littlecat/Dev/SRB2/src'