Thanks, nitrogenetics for keeping this guide updated; it did help me track down an issue trying to compile a coin based on Bitcoin 0.8. Though I noticed a few things that probably should be noted from the shift to version "L" of OpenSSL 1.0.1 from version "J":

In the 0.8 headless client modifications to the "makefile.mingw" file, you still have references to "openssl-1.0.1j" that should be updated to "openssl-1.0.1l".

Also, when compiling OpenSSL (step 2.1) after running the "./Configure" command, the output from that command suggests running "make depend" first, before running "make", which should probably be part of the instructions? My compile of OpenSSL actually failed out, while parsing the "test" directory (ideatest.c:1:1: error: expected identifier or '(' before '.' token, ../crypto/idea/ideatest.c), but all the source files got properly built before that, so it didn't affect final compilation. Is there a flag to turn off running tests of OpenSSL?

Its mentioned a few times to make sure various things are on in your PATH variable, and an example is shown in the compiling the GUI/Qt step of how to do that in the command prompt, but it's not shown for the MSYS shell; it might be useful to spell it out specifically that to add the MinGW binaries to your PATH in MYSYS, do:


But to add them to your PATH in a standard command prompt (which is needed for compiling the QT 4.8 library), do:


Also, compiling QT 4 requires Perl be installed; my Windows 8.1 box didn't have that by default, so a link to http://www.activestate.com/activeperl might be useful.

You mention commenting out the "genleveldb.commands" in the "bitcoin.pro" project file, but if you do that, you should probably also comment out the "QMAKE_CLEAN" line, which attempts to delete the "libleveldb.a" file when a "clean" action is run.