Update configure.ac to configure for Windows.

Author: SeanCampbell

configure.ac

@@ -68,7 +68,6 @@ fi
 
 AC_SUBST([DLOPEN_LIBS], [$lt_cv_dlopen_libs])
 
-
 AC_MSG_CHECKING([for kernel type ($host_os)])
 case $host_os in
   *aix*)
@@ -99,10 +98,15 @@ case $host_os in
     AC_DEFINE([KERNEL_SOLARIS], [1], [True if program is to be compiled for a Solaris kernel])
     ac_system="Solaris"
     ;;
+  *mingw32*)
+    AC_DEFINE([KERNEL_WIN32], [1], [True if program is to be compiled for a Windows kernel])
+    ac_system="Windows"
+    ;;
   *)
     ac_system="unknown"
     ;;
 esac
+
 AC_MSG_RESULT([$ac_system])
 
 AM_CONDITIONAL([BUILD_AIX], [test "x$ac_system" = "xAIX"])
@@ -111,6 +115,7 @@ AM_CONDITIONAL([BUILD_FREEBSD], [test "x$ac_system" = "xFreeBSD"])
 AM_CONDITIONAL([BUILD_LINUX], [test "x$ac_system" = "xLinux"])
 AM_CONDITIONAL([BUILD_OPENBSD], [test "x$ac_system" = "xOpenBSD"])
 AM_CONDITIONAL([BUILD_SOLARIS], [test "x$ac_system" = "xSolaris"])
+AM_CONDITIONAL([BUILD_WIN32], [test "x$ac_system" = "xWindows"])
 
 if test "x$ac_system" = "xSolaris"; then
   AC_DEFINE([_POSIX_PTHREAD_SEMANTICS], [1], [Define to enforce POSIX thread semantics under Solaris.])
@@ -745,6 +750,7 @@ AC_CHECK_FUNCS_ONCE([ \
     getaddrinfo \
     getgrnam_r \
     getnameinfo \
+    getpwnam \
     getpwnam_r \
     gettimeofday \
     if_indextoname \
@@ -851,11 +857,17 @@ AC_CHECK_FUNCS([socket],
   [
     AC_CHECK_LIB([socket], [socket],
       [socket_needs_socket="yes"],
-      [AC_MSG_ERROR([cannot find socket() in libsocket])]
+      [
+        AC_CHECK_LIB(gnu, rpl_socket,
+          [socket_needs_gnulib="yes"],
+          [AC_MSG_ERROR([cannot find socket() in libsocket])]
+        )
+      ]
     )
   ]
 )
 AM_CONDITIONAL([BUILD_WITH_LIBSOCKET], [test "x$socket_needs_socket" = "xyes"])
+AM_CONDITIONAL([BUILD_WITH_GNULIB], [test "x$socket_needs_gnulib" = "xyes"])
 
 clock_gettime_needs_posix4="no"
 AC_CHECK_FUNCS([clock_gettime],
@@ -891,7 +903,12 @@ AC_CHECK_FUNCS([nanosleep], [],
     [
       AC_CHECK_LIB([posix4], [nanosleep],
         [nanosleep_needs_posix4="yes"],
-        [AC_MSG_ERROR([cannot find nanosleep])]
+        [
+          AC_CHECK_FUNCS([rpl_nanosleep],
+            [nanosleep_needs_gnulib="yes"],
+            [AC_MSG_ERROR([cannot find nanosleep])]
+          )
+        ]
       )
     ]
   )
@@ -7093,3 +7110,4 @@ if test "x$dependency_warning" = "xyes"; then
 fi
 
 # vim: set fdm=marker sw=2 sts=2 ts=2 et :
+