[core] Solaris has getloadavg in sys/loadavg.h

SunOS/Solaris/Illumos has getloadavg declared in sys/loadavg.h .

github: closes #101

SConstruct

@@ -360,6 +360,7 @@ if 1:
 		'sys/devpoll.h',
 		'sys/epoll.h',
 		'sys/filio.h',
+		'sys/loadavg.h',
 		'sys/poll.h',
 		'sys/port.h',
 		'sys/prctl.h',

configure.ac

@@ -112,6 +112,7 @@ AC_CHECK_HEADERS([\
   sys/epoll.h \
   sys/event.h \
   sys/filio.h \
+  sys/loadavg.h \
   sys/mman.h \
   sys/poll.h \
   sys/prctl.h \

src/CMakeLists.txt

@@ -86,6 +86,7 @@ set(CMAKE_REQUIRED_FLAGS "-include sys/types.h")
 check_include_files(sys/event.h HAVE_SYS_EVENT_H)
 set(CMAKE_REQUIRED_FLAGS)
 check_include_files(sys/mman.h HAVE_SYS_MMAN_H)
+check_include_files(sys/loadavg.h HAVE_SYS_LOADAVG_H)
 check_include_files(sys/poll.h HAVE_SYS_POLL_H)
 check_include_files(sys/port.h HAVE_SYS_PORT_H)
 check_include_files(sys/prctl.h HAVE_SYS_PRCTL_H)

src/config.h.cmake

@@ -16,6 +16,7 @@
 #cmakedefine  HAVE_SYS_DEVPOLL_H
 #cmakedefine  HAVE_SYS_EPOLL_H
 #cmakedefine  HAVE_SYS_EVENT_H
+#cmakedefine  HAVE_SYS_LOADAVG_H
 #cmakedefine  HAVE_SYS_MMAN_H
 #cmakedefine  HAVE_SYS_POLL_H
 #cmakedefine  HAVE_SYS_PORT_H

src/meson.build

@@ -29,6 +29,7 @@ conf_data = configuration_data()
 conf_data.set('HAVE_SYS_DEVPOLL_H', compiler.has_header('sys/devpoll.h'))
 conf_data.set('HAVE_SYS_EPOLL_H', compiler.has_header('sys/epoll.h'))
 conf_data.set('HAVE_SYS_EVENT_H', compiler.has_header('sys/event.h'))
+conf_data.set('HAVE_SYS_LOADAVG_H', compiler.has_header('sys/loadavg.h'))
 conf_data.set('HAVE_SYS_MMAN_H', compiler.has_header('sys/mman.h'))
 conf_data.set('HAVE_SYS_POLL_H', compiler.has_header('sys/poll.h'))
 conf_data.set('HAVE_SYS_PORT_H', compiler.has_header('sys/port.h'))

src/server.c

@@ -63,6 +63,10 @@
 # include <syslog.h>
 #endif
 
+#ifdef HAVE_SYS_LOADAVG_H
+# include <sys/loadavg.h>
+#endif
+
 #ifdef HAVE_SYS_RESOURCE_H
 # include <sys/resource.h>
 #endif