+######################################################################
+# Generate macros for presence of headers
+######################################################################
+cxx_headers = ['arpa/inet.h',
+ 'fcntl.h',
+ 'grp.h',
+ 'in6addr.h',
+ 'linux/limits.h',
+ 'memory.h',
+ 'netdb.h',
+ 'netinet/in.h',
+ 'pthread.h',
+ 'pwd.h',
+ 'stdlib.h',
+ 'string.h',
+ 'strings.h',
+ 'sys/socket.h',
+ 'sys/stat.h',
+ 'sys/time.h',
+ 'sys/timeb.h',
+ 'sys/types.h',
+ 'sys/unistd.h',
+ 'syslog.h',
+ 'time.h',
+ 'unistd.h',
+ 'uuid/uuid.h',
+ 'windows.h',
+ 'winsock2.h',
+ 'ws2tcpip.h']
+
+if target_os == 'arduino':
+ # Detection of headers on the Arduino platform is currently broken.
+ cxx_headers = []
+
+if target_os == 'msys_nt':
+ # WinPThread provides a pthread.h, but we want to use native threads.
+ cxx_headers.remove('pthread.h')
+
+def get_define_from_header_file(header_file):
+ header_file_converted = header_file.replace("/","_").replace(".","_").upper()
+ return "HAVE_" + header_file_converted
+
+for header_file_name in cxx_headers:
+ if conf.CheckCXXHeader(header_file_name):
+ conf.env.AppendUnique(CPPDEFINES = [get_define_from_header_file(header_file_name)])
+