From 879215e665a9f348c8d3fa92701c34065bc86a69 Mon Sep 17 00:00:00 2001 From: fanquake Date: Sun, 21 Mar 2021 08:41:26 +0800 Subject: build: check if -lsocket is required with *ifaddrs --- build-aux/m4/l_socket.m4 | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 build-aux/m4/l_socket.m4 (limited to 'build-aux/m4') diff --git a/build-aux/m4/l_socket.m4 b/build-aux/m4/l_socket.m4 new file mode 100644 index 0000000000..38923a98fc --- /dev/null +++ b/build-aux/m4/l_socket.m4 @@ -0,0 +1,36 @@ +# Illumos/SmartOS requires linking with -lsocket if +# using getifaddrs & freeifaddrs + +m4_define([_CHECK_SOCKET_testbody], [[ + #include + #include + + int main() { + struct ifaddrs *ifaddr; + getifaddrs(&ifaddr); + freeifaddrs(ifaddr); + } +]]) + +AC_DEFUN([CHECK_SOCKET], [ + + AC_LANG_PUSH(C++) + + AC_MSG_CHECKING([whether ifaddrs funcs can be used without link library]) + + AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_SOCKET_testbody])],[ + AC_MSG_RESULT([yes]) + ],[ + AC_MSG_RESULT([no]) + LIBS="$LIBS -lsocket" + AC_MSG_CHECKING([whether getifaddrs needs -lsocket]) + AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_SOCKET_testbody])],[ + AC_MSG_RESULT([yes]) + ],[ + AC_MSG_RESULT([no]) + AC_MSG_FAILURE([cannot figure out how to use getifaddrs]) + ]) + ]) + + AC_LANG_POP +]) -- cgit v1.2.3