From: Todd C. Miller <Todd.Miller@courtesan.com>
Date: Tue, 19 Jan 1999 01:00:20 +0000 (+0000)
Subject: better fix for the problem of unresolved symbols in -lnsl or -lsocket
X-Git-Tag: SUDO_1_5_8~16
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=55a5687a368f2e9158d87dc8858e6faf1a1e98ef;p=sudo

better fix for the problem of unresolved symbols in -lnsl or -lsocket
---

diff --git a/configure b/configure
index c0c0a9f75..17bd98a45 100755
--- a/configure
+++ b/configure
@@ -6170,7 +6170,7 @@ if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
-LIBS="-lnsl -lsocket $LIBS"
+LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
 #line 6176 "configure"
 #include "confdefs.h"
@@ -6239,6 +6239,46 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
   SUDO_LIBS="${SUDO_LIBS} -linet"; LIBS="${LIBS} -linet"
 else
   echo "$ac_t""no" 1>&6
+echo $ac_n "checking for inet_addr in -lnsl""... $ac_c" 1>&6
+echo "configure:6244: checking for inet_addr in -lnsl" >&5
+ac_lib_var=`echo nsl'_'inet_addr | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lnsl socket $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 6252 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char inet_addr();
+
+int main() {
+inet_addr()
+; return 0; }
+EOF
+if { (eval echo configure:6263: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  SUDO_LIBS="${SUDO_LIBS} -lsocket -lnsl"; LIBS="${LIBS} -lsocket -lnsl"
+else
+  echo "$ac_t""no" 1>&6
+fi
+
 fi
 
 fi
@@ -6246,12 +6286,12 @@ fi
 fi
 
 echo $ac_n "checking for socket""... $ac_c" 1>&6
-echo "configure:6250: checking for socket" >&5
+echo "configure:6290: checking for socket" >&5
 if eval "test \"`echo '$''{'ac_cv_func_socket'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6255 "configure"
+#line 6295 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char socket(); below.  */
@@ -6274,7 +6314,7 @@ socket();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6278: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6318: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_socket=yes"
 else
@@ -6292,15 +6332,15 @@ if eval "test \"`echo '$ac_cv_func_'socket`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for socket in -lsocket""... $ac_c" 1>&6
-echo "configure:6296: checking for socket in -lsocket" >&5
+echo "configure:6336: checking for socket in -lsocket" >&5
 ac_lib_var=`echo socket'_'socket | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
-LIBS="-lsocket -lnsl $LIBS"
+LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6304 "configure"
+#line 6344 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6311,7 +6351,7 @@ int main() {
 socket()
 ; return 0; }
 EOF
-if { (eval echo configure:6315: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6355: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6330,7 +6370,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for socket in -linet""... $ac_c" 1>&6
-echo "configure:6334: checking for socket in -linet" >&5
+echo "configure:6374: checking for socket in -linet" >&5
 ac_lib_var=`echo inet'_'socket | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6338,7 +6378,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6342 "configure"
+#line 6382 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6349,7 +6389,7 @@ int main() {
 socket()
 ; return 0; }
 EOF
-if { (eval echo configure:6353: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6393: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6367,6 +6407,46 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
   SUDO_LIBS="${SUDO_LIBS} -linet"; LIBS="${LIBS} -linet"
 else
   echo "$ac_t""no" 1>&6
+echo $ac_n "checking for socket in -lsocket""... $ac_c" 1>&6
+echo "configure:6412: checking for socket in -lsocket" >&5
+ac_lib_var=`echo socket'_'socket | sed 'y%./+-%__p_%'`
+if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  ac_save_LIBS="$LIBS"
+LIBS="-lsocket nsl $LIBS"
+cat > conftest.$ac_ext <<EOF
+#line 6420 "configure"
+#include "confdefs.h"
+/* Override any gcc2 internal prototype to avoid an error.  */
+/* We use char because int might match the return type of a gcc2
+    builtin and then its argument prototype would still apply.  */
+char socket();
+
+int main() {
+socket()
+; return 0; }
+EOF
+if { (eval echo configure:6431: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=yes"
+else
+  echo "configure: failed program was:" >&5
+  cat conftest.$ac_ext >&5
+  rm -rf conftest*
+  eval "ac_cv_lib_$ac_lib_var=no"
+fi
+rm -f conftest*
+LIBS="$ac_save_LIBS"
+
+fi
+if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
+  echo "$ac_t""yes" 1>&6
+  SUDO_LIBS="${SUDO_LIBS} -lsocket -lnsl"; LIBS="${LIBS} -lsocket -lnsl"
+else
+  echo "$ac_t""no" 1>&6
+fi
+
 fi
 
 fi
@@ -6374,12 +6454,12 @@ fi
 fi
 
 echo $ac_n "checking for syslog""... $ac_c" 1>&6
-echo "configure:6378: checking for syslog" >&5
+echo "configure:6458: checking for syslog" >&5
 if eval "test \"`echo '$''{'ac_cv_func_syslog'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6383 "configure"
+#line 6463 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char syslog(); below.  */
@@ -6402,7 +6482,7 @@ syslog();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6406: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6486: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_syslog=yes"
 else
@@ -6420,7 +6500,7 @@ if eval "test \"`echo '$ac_cv_func_'syslog`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for syslog in -lsocket""... $ac_c" 1>&6
-echo "configure:6424: checking for syslog in -lsocket" >&5
+echo "configure:6504: checking for syslog in -lsocket" >&5
 ac_lib_var=`echo socket'_'syslog | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6428,7 +6508,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6432 "configure"
+#line 6512 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6439,7 +6519,7 @@ int main() {
 syslog()
 ; return 0; }
 EOF
-if { (eval echo configure:6443: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6523: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6458,7 +6538,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for syslog in -lnsl""... $ac_c" 1>&6
-echo "configure:6462: checking for syslog in -lnsl" >&5
+echo "configure:6542: checking for syslog in -lnsl" >&5
 ac_lib_var=`echo nsl'_'syslog | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6466,7 +6546,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6470 "configure"
+#line 6550 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6477,7 +6557,7 @@ int main() {
 syslog()
 ; return 0; }
 EOF
-if { (eval echo configure:6481: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6561: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6496,7 +6576,7 @@ if eval "test \"`echo '$ac_cv_lib_'$ac_lib_var`\" = yes"; then
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for syslog in -linet""... $ac_c" 1>&6
-echo "configure:6500: checking for syslog in -linet" >&5
+echo "configure:6580: checking for syslog in -linet" >&5
 ac_lib_var=`echo inet'_'syslog | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6504,7 +6584,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-linet  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6508 "configure"
+#line 6588 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6515,7 +6595,7 @@ int main() {
 syslog()
 ; return 0; }
 EOF
-if { (eval echo configure:6519: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6599: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6545,19 +6625,19 @@ if test "$with_DCE" = "yes" -o "$ac_cv_prog_YACC" = "bison -y"; then
     # The Ultrix 4.2 mips builtin alloca declared by alloca.h only works
 # for constant arguments.  Useless!
 echo $ac_n "checking for working alloca.h""... $ac_c" 1>&6
-echo "configure:6549: checking for working alloca.h" >&5
+echo "configure:6629: checking for working alloca.h" >&5
 if eval "test \"`echo '$''{'ac_cv_header_alloca_h'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6554 "configure"
+#line 6634 "configure"
 #include "confdefs.h"
 #include <alloca.h>
 int main() {
 char *p = alloca(2 * sizeof(int));
 ; return 0; }
 EOF
-if { (eval echo configure:6561: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6641: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   ac_cv_header_alloca_h=yes
 else
@@ -6578,12 +6658,12 @@ EOF
 fi
 
 echo $ac_n "checking for alloca""... $ac_c" 1>&6
-echo "configure:6582: checking for alloca" >&5
+echo "configure:6662: checking for alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_func_alloca_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6587 "configure"
+#line 6667 "configure"
 #include "confdefs.h"
 
 #ifdef __GNUC__
@@ -6606,7 +6686,7 @@ int main() {
 char *p = (char *) alloca(1);
 ; return 0; }
 EOF
-if { (eval echo configure:6610: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6690: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   ac_cv_func_alloca_works=yes
 else
@@ -6638,12 +6718,12 @@ EOF
 
 
 echo $ac_n "checking whether alloca needs Cray hooks""... $ac_c" 1>&6
-echo "configure:6642: checking whether alloca needs Cray hooks" >&5
+echo "configure:6722: checking whether alloca needs Cray hooks" >&5
 if eval "test \"`echo '$''{'ac_cv_os_cray'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6647 "configure"
+#line 6727 "configure"
 #include "confdefs.h"
 #if defined(CRAY) && ! defined(CRAY2)
 webecray
@@ -6668,12 +6748,12 @@ echo "$ac_t""$ac_cv_os_cray" 1>&6
 if test $ac_cv_os_cray = yes; then
 for ac_func in _getb67 GETB67 getb67; do
   echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
-echo "configure:6672: checking for $ac_func" >&5
+echo "configure:6752: checking for $ac_func" >&5
 if eval "test \"`echo '$''{'ac_cv_func_$ac_func'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 6677 "configure"
+#line 6757 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char $ac_func(); below.  */
@@ -6696,7 +6776,7 @@ $ac_func();
 
 ; return 0; }
 EOF
-if { (eval echo configure:6700: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6780: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_func_$ac_func=yes"
 else
@@ -6723,7 +6803,7 @@ done
 fi
 
 echo $ac_n "checking stack direction for C alloca""... $ac_c" 1>&6
-echo "configure:6727: checking stack direction for C alloca" >&5
+echo "configure:6807: checking stack direction for C alloca" >&5
 if eval "test \"`echo '$''{'ac_cv_c_stack_direction'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -6731,7 +6811,7 @@ else
   ac_cv_c_stack_direction=0
 else
   cat > conftest.$ac_ext <<EOF
-#line 6735 "configure"
+#line 6815 "configure"
 #include "confdefs.h"
 find_stack_direction ()
 {
@@ -6750,7 +6830,7 @@ main ()
   exit (find_stack_direction() < 0);
 }
 EOF
-if { (eval echo configure:6754: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:6834: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_stack_direction=1
 else
@@ -6775,7 +6855,7 @@ fi
 
 if test "$OS" = "irix"; then
     echo $ac_n "checking for getpwnam in -lsun""... $ac_c" 1>&6
-echo "configure:6779: checking for getpwnam in -lsun" >&5
+echo "configure:6859: checking for getpwnam in -lsun" >&5
 ac_lib_var=`echo sun'_'getpwnam | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -6783,7 +6863,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsun  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6787 "configure"
+#line 6867 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -6794,7 +6874,7 @@ int main() {
 getpwnam()
 ; return 0; }
 EOF
-if { (eval echo configure:6798: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6878: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -6839,21 +6919,21 @@ if test "$with_kerb4" = "yes"; then
     fi
 
     echo $ac_n "checking for -ldes""... $ac_c" 1>&6
-echo "configure:6843: checking for -ldes" >&5
+echo "configure:6923: checking for -ldes" >&5
 if eval "test \"`echo '$''{'ac_cv_lib_des'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_save_LIBS="$LIBS"
 LIBS="-ldes  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 6850 "configure"
+#line 6930 "configure"
 #include "confdefs.h"
 
 int main() {
 main()
 ; return 0; }
 EOF
-if { (eval echo configure:6857: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:6937: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   ac_cv_lib_des=yes
 else
@@ -6967,7 +7047,7 @@ if test "$with_authenticate" = "yes"; then
 fi
 
 echo $ac_n "checking for log file location""... $ac_c" 1>&6
-echo "configure:6971: checking for log file location" >&5
+echo "configure:7051: checking for log file location" >&5
 if test -n "$with_logpath"; then
     echo "$ac_t""$with_logpath" 1>&6
     cat >> confdefs.h <<EOF
@@ -6997,7 +7077,7 @@ else
 fi
 
 echo $ac_n "checking for timestamp file location""... $ac_c" 1>&6
-echo "configure:7001: checking for timestamp file location" >&5
+echo "configure:7081: checking for timestamp file location" >&5
 if test -n "$with_timedir"; then
     echo "$ac_t""$with_timedir" 1>&6
     cat >> confdefs.h <<EOF
diff --git a/configure.in b/configure.in
index aa0c99d40..129e6f4e8 100644
--- a/configure.in
+++ b/configure.in
@@ -1303,12 +1303,14 @@ if test -z "$LIB_CRYPT"; then
 fi
 dnl
 dnl If inet_addr(3) not in libc, check -lnsl and -linet
+dnl May need to link with *both* -lnsl and -lsocket due to unresolved symbols
 dnl
-AC_CHECK_FUNC(inet_addr, ,AC_CHECK_LIB(nsl, inet_addr, [SUDO_LIBS="${SUDO_LIBS} -lnsl"; LIBS="${LIBS} -lnsl"], AC_CHECK_LIB(inet, inet_addr, [SUDO_LIBS="${SUDO_LIBS} -linet"; LIBS="${LIBS} -linet"]), -lsocket))
+AC_CHECK_FUNC(inet_addr, ,AC_CHECK_LIB(nsl, inet_addr, [SUDO_LIBS="${SUDO_LIBS} -lnsl"; LIBS="${LIBS} -lnsl"], AC_CHECK_LIB(inet, inet_addr, [SUDO_LIBS="${SUDO_LIBS} -linet"; LIBS="${LIBS} -linet"], AC_CHECK_LIB(nsl, inet_addr, [SUDO_LIBS="${SUDO_LIBS} -lsocket -lnsl"; LIBS="${LIBS} -lsocket -lnsl"], , socket))))
 dnl
 dnl If socket(2) not in libc, check -lsocket and -linet
+dnl May need to link with *both* -lnsl and -lsocket due to unresolved symbols
 dnl
-AC_CHECK_FUNC(socket, ,AC_CHECK_LIB(socket, socket, [SUDO_LIBS="${SUDO_LIBS} -lsocket"; LIBS="${LIBS} -lsocket"], AC_CHECK_LIB(inet, socket, [SUDO_LIBS="${SUDO_LIBS} -linet"; LIBS="${LIBS} -linet"]), -lnsl))
+AC_CHECK_FUNC(socket, ,AC_CHECK_LIB(socket, socket, [SUDO_LIBS="${SUDO_LIBS} -lsocket"; LIBS="${LIBS} -lsocket"], AC_CHECK_LIB(inet, socket, [SUDO_LIBS="${SUDO_LIBS} -linet"; LIBS="${LIBS} -linet"], AC_CHECK_LIB(socket, socket, [SUDO_LIBS="${SUDO_LIBS} -lsocket -lnsl"; LIBS="${LIBS} -lsocket -lnsl"], , nsl))))
 dnl
 dnl If syslog(3) not in libc, check -lsocket, -lnsl and -linet
 dnl