Hi,
I recently tried to get mkimage compiling on Cygwin and was successful with a fresh git clone and with 'make tools' on the command line, except that I had to modify config.mk to not include the -ansi flag for Cygwin (line 75 in my config.mk). I don't know why this line is included, since -ansi breaks any code that includes include/libfdt.h (which uses the 'inline' keyword), and seems fairly deprecated at this point. After commenting out that line, 'make tools' works cleanly from the command line. I thought I'd post this information, even though we have been using our own copy of U-Boot for some time, and maybe the mainline has already addressed this issue. Perhaps this could ease future efforts by others to use U-Boot (or at least its tools) on Windows/Cygwin. -- Yuriy Dragunov Associate Embedded Engineer Lab X Technologies, LLC