The install makefiles are broken when building with CYGWIN.

It appears part of the makefiles are running 'pwd' which when used in a cygwin environment gives you a sygwin unix-style path, which will not be understood by java or most native windows applications.

Examples:

install/make/Makefile:INSTALLERDLLOUT:= $(shell $(CD) $(OUTPUTDIR) ; $(MKDIR) -p installerdll; $(CD) installerdll; pwd)
  should be just: INSTALLERDLLOUT = $(OUTPUTDIR)/installerdll
  and the "$(MKDIR) -p $(INSTALLERDLLOUT)" should be done in a rule somewhere.
  The $(OUTPUTDIR) will be a safe directory to use.

install/make/common/Defs-windows.gmk:BACKSLASH_PWD = $(subst /,\\,$(call FullPath,$(shell pwd)))
  is probably ok, but I suspect that "." would work as well as "$(shell pwd)", and avoid one process spawn.
  The FullPath macro will spawn a process (either dosname in MKS or cygpath in CYGWIN), maybe more.

install/make/installerdll/installerdll/src/build_solution.sh:SRC_DIR=`cd $SRC_DIR; pwd`;
  Is the bug I probably ran into. This should be changed to supply the script the right SRC_DIR to begin with
  and avoid using pwd in the shell logic. e.g. do something like: SRC_DIR:=$(call FullPath,$(SRC_DIR)))
  in the Makefile before starting the shell script.