Some error when build QRD8225 modem with windows

the released version is HY11-NA094-7_1.0.145451
build id is SSKOLYM_FLASH_H9DP32A4JJACGR_KEM (USE_UNIX=no)
buid entironment: Windows+cygwin
GNU make 3.81
RVCT2.2 build 593
perl 5.8.8
python 2.6.2
those entironment can build 7x30 platform
the fat.bin and udisk.bin has not been generated , the build error is following



LINKING cpfatfs.exe
gcc -mno-cygwin -o cpfatfs.exe cpfatfs.o
-----------------------------------------------------------
make[1]: Leaving directory `/e/build/W840A/_CodeBase/HY11-NA094-7_1.0.145451/modem_proc/core/storage/tools/fattool'
===============================================================
---------------------------------------------------------------
Generating fat.bin for eMMC.

SSNSKOLY
../../core/storage/tools/fattool/cpfatfs.exe ../../build/ms/bin/SSNSKOLY/fat.bin image ../../build/ms/bin/SSNSKOLY/amss
hd.mbn
Found directory: change working directory to: 1b1.
Incoming file size: 2293256
Adding file to cluster 3.
Insufficient disk space to copy data file.
make: *** [genfatfs] Error 1
rm ../../core/boot/secboot/cfg_data/boot_cfg_data.exe bin/SSNSKOLY/emmcbld/emmcbld.mbn bin/SSNSKOLY/emmcbld/emmcbldhd.mb
n ../../core/boot/secboot/qcsbl/qcsblhd.mbn


I think the fat.bin image is generated by cpfatfs.exe from amsshd.mbn and amss.mbn
there must be some problem to build modem_proc\core\storage\tools\fattool

so modify modem_proc\core\storage\tools\fattool\Makefile to set BUILD_UNIX=y, it will be OK.