Watchman: Referencing to issue #514 Cannot build

[Nshul]

I am using Ubuntu 16.04 x64 and when try to run $ make on my terminal
I get the errors as

watchman-ContentHash.o: In function `watchman::ContentHashCache::computeHashImmediate(watchman::ContentHashCacheKey const&) const':
/home/anshulmittal/watchman/ContentHash.cpp:65: undefined reference to `SHA1_Init'
/home/anshulmittal/watchman/ContentHash.cpp:78: undefined reference to `SHA1_Update'
/home/anshulmittal/watchman/ContentHash.cpp:81: undefined reference to `SHA1_Final'
collect2: error: ld returned 1 exit status
Makefile:1566: recipe for target 'watchman' failed
make[1]: *** [watchman] Error 1
make[1]: Leaving directory '/home/anshulmittal/watchman'
Makefile:1101: recipe for target 'all' failed
make: *** [all] Error 2

Please help

[Nshul]

This comment https://github.com/facebook/watchman/issues/514#issuecomment-334807459 in issue #514 worked for me