Check for unistd.h.
Check for unistd.h.

JanX2/libzip-git,projedi/libzip,JanX2/libzip-git,projedi/libzip,projedi/libzip,det/libzip,cysp/libzip,cysp/libzip,projedi/libzip,det/libzip,det/libzip,det/libzip,cysp/libzip,cysp/libzip