vobcopy error

[chris@ArchBSD vobcopy]$ makepkg -s
==> Making package: vobcopy 1.2.0-4 (Fri Aug 30 10:58:08 PDT 2013)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found vobcopy-1.2.0.tar.bz2
==> Validating source files with md5sums...
    vobcopy-1.2.0.tar.bz2 ... Passed
==> Extracting sources...
  -> Extracting vobcopy-1.2.0.tar.bz2 with bsdtar
==> Removing existing pkg/ directory...
==> Starting build()...
/home/chris/builds/vobcopy/PKGBUILD: line 22: export: `=': not a valid identifier
/home/chris/builds/vobcopy/PKGBUILD: line 22: export: `-g': not a valid identifier
/home/chris/builds/vobcopy/PKGBUILD: line 22: export: `-O2': not a valid identifier
/home/chris/builds/vobcopy/PKGBUILD: line 22: export: `-D_GNU_SOURCE': not a valid identifier
==> ERROR: A failure occurred in build().
    Aborting...
[chris@ArchBSD vobcopy]$ makepkg -s
/home/chris/builds/vobcopy/PKGBUILD: line 19: export: `=': not a valid identifier
/home/chris/builds/vobcopy/PKGBUILD: line 19: export: `-g': not a valid identifier
/home/chris/builds/vobcopy/PKGBUILD: line 19: export: `-O2': not a valid identifier
/home/chris/builds/vobcopy/PKGBUILD: line 19: export: `-D_GNU_SOURCE': not a valid identifier
==> Making package: vobcopy 1.2.0-4 (Fri Aug 30 10:59:54 PDT 2013)
==> Checking runtime dependencies...
==> Checking buildtime dependencies...
==> Retrieving sources...
  -> Found vobcopy-1.2.0.tar.bz2
==> Validating source files with md5sums...
    vobcopy-1.2.0.tar.bz2 ... Passed
==> Extracting sources...
  -> Extracting vobcopy-1.2.0.tar.bz2 with bsdtar
==> Removing existing pkg/ directory...
==> Starting build()...
cc -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -I/usr/local//include -c vobcopy.c
vobcopy.c: In function 'main':
vobcopy.c:776:7: warning: passing argument 1 of 'get_longest_title' from incompatible pointer type [enabled by default]
       titleid = get_longest_title( &dvd );
       ^
In file included from vobcopy.h:217:0,
                 from vobcopy.c:53:
dvd.h:9:5: note: expected 'struct dvd_reader_t *' but argument is of type 'struct dvd_reader_t **'
 int get_longest_title( dvd_reader_t * );
     ^
vobcopy.c:1696:36: error: 'O_LARGEFILE' undeclared (first use in this function)
           if( open( name, O_RDONLY|O_LARGEFILE ) >= 0 )
                                    ^
vobcopy.c:1696:36: note: each undeclared identifier is reported only once for each function it appears in
gmake: *** [vobcopy.o] Error 1
==> ERROR: A failure occurred in build().
    Aborting..