Unable to build on Haiku

[extrowerk]

On Haiku hrev53714 64 bit building fails:

/Ports/Testring/libutp> make
g++ -Wall -DPOSIX -g -fno-exceptions -O3 -fPIC -fno-rtti -Wno-sign-compare -fpermissive   -c -o utp_internal.o utp_internal.cpp
In file included from utp_internal.cpp:32:
utp_types.h:99:28: error: conflicting declaration 'typedef long long unsigned int uint64'
 typedef unsigned long long uint64;
                            ^~~~~~
In file included from /boot/system/develop/headers/os/support/ByteOrder.h:11,
                 from /boot/system/develop/headers/bsd/endian.h:16,
                 from /boot/system/develop/headers/posix/netinet/in.h:10,
                 from utp_types.h:56,
                 from utp_internal.cpp:32:
/boot/system/develop/headers/os/support/SupportDefs.h:27:26: note: previous declaration as 'typedef __haiku_uint64 uint64'
 typedef __haiku_uint64   uint64;
                          ^~~~~~
In file included from utp_internal.cpp:32:
utp_types.h:100:19: error: conflicting declaration 'typedef long long int int64'
 typedef long long int64;
                   ^~~~~
In file included from /boot/system/develop/headers/os/support/ByteOrder.h:11,
                 from /boot/system/develop/headers/bsd/endian.h:16,
                 from /boot/system/develop/headers/posix/netinet/in.h:10,
                 from utp_types.h:56,
                 from utp_internal.cpp:32:
/boot/system/develop/headers/os/support/SupportDefs.h:26:25: note: previous declaration as 'typedef __haiku_int64 int64'
 typedef __haiku_int64   int64;
                         ^~~~~
<builtin>: recipe for target 'utp_internal.o' failed
make: *** [utp_internal.o] Error 1

[arvidn]

in my mind, the best solution would just be for libutp to not define any of these typedefs, but to just use std::int64_t etc.