# inet_pton.m4 serial 19 dnl Copyright (C) 2006, 2008-2024 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_FUNC_INET_PTON], [ AC_REQUIRE([gl_ARPA_INET_H_DEFAULTS]) dnl Persuade Solaris to declare inet_pton. AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_REQUIRE([AC_C_RESTRICT]) dnl Most platforms that provide inet_pton define it in libc. dnl Solaris 8..10 provide inet_pton in libnsl instead. dnl Solaris 2.6..7 provide inet_pton in libresolv instead. dnl Haiku provides it in -lnetwork. dnl Native Windows provides it in -lws2_32 instead, with a declaration in dnl , and it uses stdcall calling convention, not cdecl dnl (hence we cannot use AC_CHECK_FUNCS, AC_SEARCH_LIBS to find it). HAVE_INET_PTON=1 INET_PTON_LIB= gl_PREREQ_SYS_H_WINSOCK2 if test $HAVE_WINSOCK2_H = 1; then dnl It needs to be overridden, because the stdcall calling convention dnl is not compliant with POSIX. Set REPLACE_INET_PTON in order to avoid dnl a name conflict at the linker level, even though the header file dnl declares inet_pton only if _WIN32_WINNT >= 0x0600. REPLACE_INET_PTON=1 AC_CHECK_DECLS([inet_pton],,, [[#include ]]) if test $ac_cv_have_decl_inet_pton = yes; then INET_PTON_LIB="-lws2_32" else HAVE_DECL_INET_PTON=0 fi else gl_save_LIBS=$LIBS AC_SEARCH_LIBS([inet_pton], [nsl resolv network], [], [AC_CHECK_FUNCS([inet_pton]) if test $ac_cv_func_inet_pton = no; then HAVE_INET_PTON=0 fi ]) LIBS=$gl_save_LIBS if test "$ac_cv_search_inet_pton" != "no" \ && test "$ac_cv_search_inet_pton" != "none required"; then INET_PTON_LIB="$ac_cv_search_inet_pton" fi AC_CHECK_HEADERS_ONCE([netdb.h]) AC_CHECK_DECLS([inet_pton],,, [[#include #if HAVE_NETDB_H # include #endif ]]) if test $ac_cv_have_decl_inet_pton = no; then HAVE_DECL_INET_PTON=0 fi fi AC_SUBST([INET_PTON_LIB]) ]) # Prerequisites of lib/inet_pton.c. AC_DEFUN([gl_PREREQ_INET_PTON], [ AC_REQUIRE([gl_SOCKET_FAMILIES]) ])