# Unable to make wp76xx with legato 18.01

**URL:** <https://mangoh.discourse.group/t/unable-to-make-wp76xx-with-legato-18-01/1290>\
**Category:** Uncategorized\
**Created:** [March 31, 2018, 11:45am UTC](https://mangoh.discourse.group/t/unable-to-make-wp76xx-with-legato-18-01/1290 "2018-03-31T11:45:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![niladridm](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/niladridm/32/91_2.png) [@niladridm](https://mangoh.discourse.group/u/niladridm)\
**Post date:** [March 31, 2018, 11:45am UTC](https://mangoh.discourse.group/t/unable-to-make-wp76xx-with-legato-18-01/1290/1 "2018-03-31T11:45:01Z")

</div>

I am not able to build system binary file for my new module WP7608 (using in mangOH Red). I want to use Legato 18.01 and able to build Legato successfully using make command but while trying to build system for wp7608 using commands . bin/configlegatoenv and make wp76xx getting below error. I am using ova Legato 17.07.2

…  
collect2: error: ld returned 1 exit status  
[661/780] Linking C library  
ninja: build stopped: subcommand failed.  
Makefile:414: recipe for target ‘system\_wp76xx’ failed  
make: \*\*\* [system\_wp76xx] Error 1

also tried with new ova Legato 18.02 but getting different build error.  
unistd.h file missing.

thanks