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build: check if -lsocket is required with *ifaddrs

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fanquake 2021-03-21 08:41:26 +08:00
parent 87deac66aa
commit 879215e665
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2 changed files with 37 additions and 1 deletions
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36
build-aux/m4/l_socket.m4 Normal file
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@ -0,0 +1,36 @@
# Illumos/SmartOS requires linking with -lsocket if
# using getifaddrs & freeifaddrs
m4_define([_CHECK_SOCKET_testbody], [[
#include <sys/types.h>
#include <ifaddrs.h>
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
])

2
configure.ac
View File

@ -936,7 +936,7 @@ fi
AC_CHECK_HEADERS([endian.h sys/endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h sys/sysctl.h vm/vm_param.h sys/vmmeter.h sys/resources.h]) AC_CHECK_HEADERS([endian.h sys/endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h sys/sysctl.h vm/vm_param.h sys/vmmeter.h sys/resources.h])
AC_CHECK_DECLS([getifaddrs, freeifaddrs],,, AC_CHECK_DECLS([getifaddrs, freeifaddrs],[CHECK_SOCKET],,
[#include <sys/types.h> [#include <sys/types.h>
#include <ifaddrs.h>] #include <ifaddrs.h>]
) )