The configure script wouldn't finish when trying to run in mingw32. I'm running on Windows 7, 64 bit but compiling a 32 bit v0.11.0.
Was finally able to configure and run make successfully by doing the following.
Added the following back into the v0.11.0 "configure.ac" script:
m4_include([pkg.m4])
put the above line just before
dnl pkg-config check.
PKG_PROG_PKG_CONFIG
and then copied the "pkg.m4" macro, from v0.10.2, back into the /c/bitcoin folder of v0.11.0.
compiling works fine with this workaround