compilation error on Haiku

[Bruno Haible]

Compiling poke on Haiku (32-bit), I get this compilation error:

libtool: compile:  gcc-x86 -DHAVE_CONFIG_H -I. -I../../../jitter/gnulib-local 
-I../config-private -I../jitter -I/boot/home/config/non-packaged/include -Wall 
-g -O2 -MT argp-eexst.lo -MD -MP -MF .deps/argp-eexst.Tpo -c 
../../../jitter/gnulib-local/argp-eexst.c  -DPIC -o .libs/argp-eexst.o
../../../jitter/gnulib-local/argp-eexst.c:30:32: error: 'EX_USAGE' undeclared 
here (not in a function)
 error_t argp_err_exit_status = EX_USAGE;
                                ^
Makefile:1637: recipe for target 'argp-eexst.lo' failed
make[5]: *** [argp-eexst.lo] Error 1


The cause is in Gnulib and was fixed today.
https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=c7c26eb67ead3094be7bd9c2fd7bf79f2a5b25c7

Next, jitter needs to import the newest Gnulib.
Then, poke can use the newest jitter, and the issue will be fixed.

Bruno