Building libltdl recursively with MinGW failed with an error of "sleep"
being redefined. Commenting out the sleep() definition in config.h.in
resulted in libtdl compiling but a linker failure in libyaesu as
"_sleep" was not defined.
A bit of searching reveals that the MS Windows API does not include
"sleep" and MinGW does not include it either, hence the definition in
gr_pwin32.m4 from the GNU Radio project. Uopn finding a MinGW User
thread from 2007 that discussed this very issue, the following message
hinted that using a CPP #define to wrap Windows Sleep() may work:
http://mingw.5.n7.nabble.com/Help-where-is-the-C-language-sleep-function-tp8921p8925.html
And indeed it seems to. Compilation is now clean with recursive libltdl
and the rest of Hamlib, but does it work?
Using the -Wall switch to autoconf/autoreconf revealed a number of
obsolete macros. At the moment, offending macros have been commented
out using 'dnl'. They will be removed at some later date.
Nate Bargmann