Cygwin build is broken again

make[2]: Entering directory '/cygdrive/d/Spuda/Documents/projects/nuttx/master/nuttx_fork/libs/libc'
.\assert/lib_assert.c:25:10: fatal error: nuttx/arch.h: No such file or directory
25 | #include
| ^~~~~~~~~~~~~~
compilation terminated.
ERROR: arm-none-eabi-gcc failed: 1
command: arm-none-eabi-gcc -MT kbin\\lib_assert.o -M '-fno-builtin' '-funwind-tables' '-Wall' '-Wstrict-prototypes' '-Wshadow' '-Wundef' '-Os' '-fno-strict-aliasing' '-fomit-frame-pointer' '-fno-strength-reduce' '-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-isystem' 'D:SpudaDocumentsprojectsnuttxmasternuttx_forkinclude' '-D__NuttX__' '-pipe' '-I' 'D:SpudaDocumentsprojectsnuttxmasternuttx_forklibslibc' '-D__KERNEL__' .\\assert/lib_assert.c
make[2]: *** [/cygdrive/d/Spuda/Documents/projects/nuttx/master/nuttx_fork/tools/Config.mk:188: lib_assert.ddc] Error 1
make[2]: Leaving directory '/cygdrive/d/Spuda/Documents/projects/nuttx/master/nuttx_fork/libs/libc'

Failure occurred on first compilation of stm32f4discovery:kostest configuration. The problem probably does not depend on configuration. Most likely all Cygwin builds that use a Windows native toolchain are broken. But perhaps this is limited to Cygwin 2 pass builds with a Windows native toolchain only?