Sync with gnulib

1 files changed, 45 insertions, 0 deletions

diff --git a/gl/m4/netdb_h.m4 b/gl/m4/netdb_h.m4
new file mode 100644
index 00000000..5a12251f
--- /dev/null
+++ b/gl/m4/netdb_h.m4
@@ -0,0 +1,45 @@
+# netdb_h.m4 serial 5
+dnl Copyright (C) 2008 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_HEADER_NETDB],
+[
+  AC_REQUIRE([gl_NETDB_H_DEFAULTS])
+  gl_CHECK_NEXT_HEADERS([netdb.h])
+  if test $ac_cv_header_netdb_h = yes; then
+    AC_COMPILE_IFELSE(
+      [AC_LANG_PROGRAM([[
+         #include <netdb.h>
+         struct addrinfo a;
+         int b = EAI_OVERFLOW;
+         int c = AI_NUMERICSERV;
+       ]])],
+      [NETDB_H=''], [NETDB_H='netdb.h'])
+    HAVE_NETDB_H=1
+  else
+    NETDB_H='netdb.h'
+    HAVE_NETDB_H=0
+  fi
+  AC_SUBST([HAVE_NETDB_H])
+  AC_SUBST([NETDB_H])
+])
+
+AC_DEFUN([gl_NETDB_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_NETDB_H_DEFAULTS])
+  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_NETDB_H_DEFAULTS],
+[
+  GNULIB_GETADDRINFO=0; AC_SUBST([GNULIB_GETADDRINFO])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_STRUCT_ADDRINFO=1;   AC_SUBST([HAVE_STRUCT_ADDRINFO])
+  HAVE_DECL_FREEADDRINFO=1; AC_SUBST([HAVE_DECL_FREEADDRINFO])
+  HAVE_DECL_GAI_STRERROR=1; AC_SUBST([HAVE_DECL_GAI_STRERROR])
+  HAVE_DECL_GETADDRINFO=1;  AC_SUBST([HAVE_DECL_GETADDRINFO])
+  HAVE_DECL_GETNAMEINFO=1;  AC_SUBST([HAVE_DECL_GETNAMEINFO])
+])