When checking for gethostbyname_r_6 not try to compile but try to
link.

configure

diff --git a/configure b/configure
index 0a93e3e..70fc20e 100755
--- a/configure
+++ b/configure
@@ -17352,9 +17352,9 @@
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -17367,7 +17367,7 @@
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-	 { ac_try='test -s conftest.$ac_objext'
+	 { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -17381,7 +17381,8 @@
 wine_cv_linux_gethostbyname_r_6=no
 
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
 fi
 echo "$as_me:$LINENO: result: $wine_cv_linux_gethostbyname_r_6" >&5

configure.ac

diff --git a/configure.ac b/configure.ac
index fcb3f09..03766cf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1253,7 +1253,7 @@
 
 AC_CACHE_CHECK([whether we can use re-entrant gethostbyname_r Linux style],
    	wine_cv_linux_gethostbyname_r_6,
-	AC_TRY_COMPILE([
+	AC_TRY_LINK([
 #include <netdb.h>
 	], [
     char *name=NULL;