Failed to manually build blinky example

[mraposo1]

Had tried to build it from the IDE before.  Couldn't do it.
Tried to build manually, got exactly the same error I was getting in the IDE.

Parsing C:/Users/mario.raposo/zephyrproject/zephyr/Kconfig
Loaded configuration 'C:/Users/mario.raposo/zephyrproject/zephyr/build/zephyr/.config'
No change to configuration in 'C:/Users/mario.raposo/zephyrproject/zephyr/build/zephyr/.config'
No change to Kconfig header in 'C:/Users/mario.raposo/zephyrproject/zephyr/build/zephyr/include/generated/autoconf.h'
CMake Error at ../../../cmake/extensions.cmake:1557 (message):
Assertion failed: The toolchain is unable to build a dummy C file. See
CMakeError.log.
Call Stack (most recent call first):
../../../CMakeLists.txt:42 (assert)

-- Configuring incomplete, errors occurred!
See also "C:/Users/mario.raposo/zephyrproject/zephyr/build/CMakeFiles/CMakeOutput.log".
See also "C:/Users/mario.raposo/zephyrproject/zephyr/build/CMakeFiles/CMakeError.log".

[JONATHAN LL]

Hi Mario,

What version of ncs do you have?
What version of cmake do you have?
Can you build other example projects?

I see that you have a dot "." in you path. C:/Users/mario.raposo/... Try to change the "." to a underscore "_" and se if you still have the same build errors. 

The error:

CMake Error at ../../../cmake/extensions.cmake:1557 (message):

is the following 

 check_if_directory_is_writeable(${test_user_dir} ok)
      if(${ok})
        # The directory is write-able
        set(user_dir ${test_user_dir})
        break()
      else()                          // This is line 1557
        # The directory was not writeable, keep looking for a suitable
        # directory
      endif()

Regards,
Joathan

[mraposo1]

I can't change the directory.
I point for the new one and it always defaults to "C:/Users/mario.raposo/"