Sorry for being so unresponsive, we had bank holidays and I've been away from my computer for 3 days.
> -----Original Message----- > From: Gregory Nutt [mailto:spudan...@gmail.com] > Not if CONFIG_HOST_WINDOWS=y in the defconfig file. That is what is set > in stm32f4discovery:nsh: > > $ grep -r CONFIG_HOST > boards/arm/stm32/stm32f4discovery/configs/nsh/defconfig > CONFIG_HOST_WINDOWS=y With a virgin clone of apache/incubator-nuttx, configure outputs the following in MSYS2: $ tools/configure.sh stm32f4discovery/nsh Copy files Select CONFIG_HOST_LINUX=y Refreshing... time make -j real 4m48,811s user 0m41,836s sys 1m47,151s make clean -j time make -j real 3m23,974s user 0m33,409s sys 1m34,379s If I force -g this gives the following results: $ tools/configure.sh -g stm32f4discovery/nsh Copy files Select CONFIG_HOST_WINDOWS=y Select CONFIG_WINDOWS_MSYS=y Refreshing... real 3m47,740s user 0m37,817s sys 1m44,749s make clean -j time make -j real 3m26,775s user 0m29,002s sys 1m17,780s Overall I see some fluctuation (build time can be sometimes as well in the 7-8min range), but this seems to be related to my system. So for me there's one question left: Why seems Greg's CYGWIN to be faster than my MSYS2. But since I can again achieve build times in the 3 to 4min range, that's not of much importance. (Nevertheless I will try WSL someday.) Johannes
