Make CURL_CHECK_NI_WITHSCOPEID actually try to compile NI_WITHSCOPEID when cross-compiling.

1 files changed, 73 insertions, 78 deletions

diff --git a/acinclude.m4 b/acinclude.m4
index bc6a343e4..b621d6afb 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -422,6 +422,79 @@ AC_DEFUN([CURL_CHECK_FUNC_GETNAMEINFO], [
 ]) # AC_DEFUN
 
 
+dnl CURL_CHECK_NI_WITHSCOPEID
+dnl -------------------------------------------------
+dnl Check for working NI_WITHSCOPEID in getnameinfo()
+
+AC_DEFUN([CURL_CHECK_NI_WITHSCOPEID], [
+  AC_CACHE_CHECK([for working NI_WITHSCOPEID], 
+    [ac_cv_working_ni_withscopeid], [
+    AC_RUN_IFELSE([
+      AC_LANG_PROGRAM([
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+      ],[
+#ifdef NI_WITHSCOPEID
+        struct sockaddr_storage ss;
+        int sslen = sizeof(ss);
+        int rc;
+        char hbuf[NI_MAXHOST];
+        int fd = socket(AF_INET6, SOCK_STREAM, 0);
+        if(fd < 0) {
+          perror("socket()");
+          return 1; /* Error creating socket */
+        }
+        rc = getsockname(fd, (struct sockaddr *)&ss, &sslen);
+        if(rc) {
+          perror("getsockname()");
+          return 2; /* Error retrieving socket name */
+        }
+        rc = getnameinfo((struct sockaddr *)&ss, sslen, hbuf, sizeof(hbuf),
+               NULL, 0,
+               NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID);
+        if(rc) {
+          printf("rc = %s\n", gai_strerror(rc));
+          return 3; /* Error translating socket address */
+        }
+        return 0; /* Ok, NI_WITHSCOPEID works */
+#else
+        return 4; /* Error, NI_WITHSCOPEID not defined */
+#endif
+      ]) # AC_LANG_PROGRAM
+    ],[
+      # Exit code == 0. Program worked.
+      ac_cv_working_ni_withscopeid="yes"
+    ],[
+      # Exit code != 0. Program failed.
+      ac_cv_working_ni_withscopeid="no"
+    ],[
+      # Program is not run when cross-compiling. So we assume
+      # NI_WITHSCOPEID will work if we are able to compile it.
+      AC_COMPILE_IFELSE([
+        AC_LANG_PROGRAM([
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+        ],[
+          unsigned int dummy= NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID;
+        ])
+      ],[
+        ac_cv_working_ni_withscopeid="yes"
+      ],[
+        ac_cv_working_ni_withscopeid="no"
+      ]) # AC_COMPILE_IFELSE
+    ]) # AC_RUN_IFELSE
+  ]) # AC_CACHE_CHECK
+  if test "x$ac_cv_working_ni_withscopeid" = "xyes"; then
+    AC_DEFINE(HAVE_NI_WITHSCOPEID, 1,
+      [Define to 1 if NI_WITHSCOPEID exists and works.])
+  fi
+]) # AC_DEFUN
+
+
 dnl CURL_CHECK_NONBLOCKING_SOCKET
 dnl -------------------------------------------------
 dnl Check for how to set a socket to non-blocking state. There seems to exist
@@ -753,84 +826,6 @@ if test "$ac_cv_working_getaddrinfo" = "yes"; then
 fi
 ])
 
-dnl ************************************************************
-dnl check for working NI_WITHSCOPEID in getnameinfo()
-dnl
-AC_DEFUN([CURL_CHECK_NI_WITHSCOPEID],[
-  AC_CACHE_CHECK(for working NI_WITHSCOPEID, ac_cv_working_ni_withscopeid,[
-
- AC_RUN_IFELSE([[
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
-int main()
-{
-#ifdef NI_WITHSCOPEID
-   struct sockaddr_storage ss;
-   int sslen = sizeof(ss);
-   int rc;
-   char hbuf[NI_MAXHOST];
-   int fd = socket(AF_INET6, SOCK_STREAM, 0);
-   if(fd < 0) {
-     perror("socket()");
-     return 1; /* couldn't create socket of either kind */
-   }
-
-   rc = getsockname(fd, (struct sockaddr *)&ss, &sslen);
-   if(rc) {
-     perror("getsockname()");
-     return 2;
-   }
-
-   rc = getnameinfo((struct sockaddr *)&ss, sslen, hbuf, sizeof(hbuf),
-                     NULL, 0,
-                     NI_NUMERICHOST | NI_NUMERICSERV | NI_WITHSCOPEID);
-
-   if(rc) {
-     printf("rc = %s\n", gai_strerror(rc));
-     return 3;
-   }
-
-   return 0; /* everything works fine, use NI_WITHSCOPEID! */
-#else
-   return 4; /* we don't seem to have the definition, don't use it */
-#endif
-}
-]],
-dnl program worked:
-[ ac_cv_working_ni_withscopeid="yes" ],
-dnl program failed:
-[ ac_cv_working_ni_withscopeid="no" ],
-dnl we cross-compile, check the headers using the preprocessor
-[
-
- AC_EGREP_CPP(WORKS,
-[
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
-
-#ifdef NI_WITHSCOPEID
-WORKS
-#endif
-],
-  ac_cv_working_ni_withscopeid="yes",
-  ac_cv_working_ni_withscopeid="no" )
-
- ]
-) dnl end of AC_RUN_IFELSE
-
-]) dnl end of AC_CACHE_CHECK
-
-if test "$ac_cv_working_ni_withscopeid" = "yes"; then
-  AC_DEFINE(HAVE_NI_WITHSCOPEID, 1,
-            [Define if NI_WITHSCOPEID exists and works])
-fi
-
-]) dnl end of AC_DEFUN
-
 
 AC_DEFUN([CURL_CHECK_LOCALTIME_R],
 [