cmake PAGMO_HAVE_UNISTD_H examples

esa/pagmo2 CMakeLists.txt :54 

CHECK_INCLUDE_FILE_CXX("unistd.h" PAGMO_HAVE_UNISTD_H)

asset-group/5ghoul-5g-nr-attacks libs/pagmo2/CMakeLists.txt :54 

CHECK_INCLUDE_FILE_CXX("unistd.h" PAGMO_HAVE_UNISTD_H)