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| author | Yang Tse <yangsita@gmail.com> | 2008-10-30 17:45:47 +0000 |
|---|---|---|
| committer | Yang Tse <yangsita@gmail.com> | 2008-10-30 17:45:47 +0000 |
| commit | c0711bdca9afc81e25f7dbe6857fffc4426e7cdb (patch) | |
| tree | 5027640be76b46436ddba9197d68e60da8b91273 /m4 | |
| parent | 0e4d0eda3d33b468e2c8486543644b4b8b88e7d0 (diff) | |
| download | c-ares-c0711bdca9afc81e25f7dbe6857fffc4426e7cdb.tar.gz c-ares-c0711bdca9afc81e25f7dbe6857fffc4426e7cdb.tar.bz2 c-ares-c0711bdca9afc81e25f7dbe6857fffc4426e7cdb.zip | |
check for freeaddrinfo() at configuration phase
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/cares-functions.m4 | 98 |
1 files changed, 97 insertions, 1 deletions
diff --git a/m4/cares-functions.m4 b/m4/cares-functions.m4 index 8fc25a6..98bd070 100644 --- a/m4/cares-functions.m4 +++ b/m4/cares-functions.m4 @@ -16,7 +16,7 @@ #*************************************************************************** # File version for 'aclocal' use. Keep it a single number. -# serial 17 +# serial 18 dnl CARES_INCLUDES_ARPA_INET @@ -230,6 +230,102 @@ cares_includes_ws2tcpip="\ ]) +dnl CARES_CHECK_FUNC_FREEADDRINFO +dnl ------------------------------------------------- +dnl Verify if freeaddrinfo is available, prototyped, +dnl and can be compiled. If all of these are true, +dnl and usage has not been previously disallowed with +dnl shell variable cares_disallow_freeaddrinfo, then +dnl HAVE_FREEADDRINFO will be defined. + +AC_DEFUN([CARES_CHECK_FUNC_FREEADDRINFO], [ + AC_REQUIRE([CARES_INCLUDES_WS2TCPIP])dnl + AC_REQUIRE([CARES_INCLUDES_SYS_SOCKET])dnl + AC_REQUIRE([CARES_INCLUDES_NETDB])dnl + # + tst_links_freeaddrinfo="unknown" + tst_proto_freeaddrinfo="unknown" + tst_compi_freeaddrinfo="unknown" + tst_allow_freeaddrinfo="unknown" + # + AC_MSG_CHECKING([if freeaddrinfo can be linked]) + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ]],[[ + freeaddrinfo(0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_links_freeaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_links_freeaddrinfo="no" + ]) + # + if test "$tst_links_freeaddrinfo" = "yes"; then + AC_MSG_CHECKING([if freeaddrinfo is prototyped]) + AC_EGREP_CPP([freeaddrinfo],[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ],[ + AC_MSG_RESULT([yes]) + tst_proto_freeaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_proto_freeaddrinfo="no" + ]) + fi + # + if test "$tst_proto_freeaddrinfo" = "yes"; then + AC_MSG_CHECKING([if freeaddrinfo is compilable]) + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM([[ + $cares_includes_ws2tcpip + $cares_includes_sys_socket + $cares_includes_netdb + ]],[[ + freeaddrinfo(0); + ]]) + ],[ + AC_MSG_RESULT([yes]) + tst_compi_freeaddrinfo="yes" + ],[ + AC_MSG_RESULT([no]) + tst_compi_freeaddrinfo="no" + ]) + fi + # + if test "$tst_compi_freeaddrinfo" = "yes"; then + AC_MSG_CHECKING([if freeaddrinfo usage allowed]) + if test "x$cares_disallow_freeaddrinfo" != "xyes"; then + AC_MSG_RESULT([yes]) + tst_allow_freeaddrinfo="yes" + else + AC_MSG_RESULT([no]) + tst_allow_freeaddrinfo="no" + fi + fi + # + AC_MSG_CHECKING([if freeaddrinfo might be used]) + if test "$tst_links_freeaddrinfo" = "yes" && + test "$tst_proto_freeaddrinfo" = "yes" && + test "$tst_compi_freeaddrinfo" = "yes" && + test "$tst_allow_freeaddrinfo" = "yes"; then + AC_MSG_RESULT([yes]) + AC_DEFINE_UNQUOTED(HAVE_FREEADDRINFO, 1, + [Define to 1 if you have the freeaddrinfo function.]) + ac_cv_func_freeaddrinfo="yes" + else + AC_MSG_RESULT([no]) + ac_cv_func_freeaddrinfo="no" + fi +]) + + dnl CARES_CHECK_FUNC_GETADDRINFO dnl ------------------------------------------------- dnl Verify if getaddrinfo is available, prototyped, can |