gdatetime: math library link issue
Found this issue w.r.to c3805d74 while cross-build on
1.2.66.4 stable version
2.Ubuntu-16.10LTS
glib/4430778@@glib-2.0@sha/gstdio.c.o: In function `g_utime':
glib-2.66.4/target-build/../glib/gstdio.c:1736: warning: the use of OBSOLESCENT `utime' is discouraged, use `utimes'
glib/4430778@@glib-2.0@sha/gdatetime.c.o: In function `g_date_time_new':
glib-2.66.4/target-build/../glib/gdatetime.c:1591: undefined reference to `__isnan'
collect2: error: ld returned 1 exit status
[87/245] Compiling C object 'gio/6ae6c9e@@gio-2.0@sha/gzlibdecompressor.c.o'.
ninja: build stopped: subcommand failed.