Alexandre Julliard : iphlpapi: Check if getifaddrs really exists.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 7f23bbe7f9b252ac6a9e0881b25315cc3a6eeca0
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=7f23bbe7f9b252ac6a9e0881b25315cc3a6eeca0

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Mon Jun 19 13:47:38 2017 +0200

iphlpapi: Check if getifaddrs really exists.

Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 configure              | 1 +
 configure.ac           | 1 +
 dlls/iphlpapi/ifenum.c | 2 +-
 include/config.h.in    | 3 +++
 4 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 10a4204..55b5ad8 100755
--- a/configure
+++ b/configure
@@ -15403,6 +15403,7 @@ for ac_func in \
 	futimesat \
 	getattrlist \
 	getauxval \
+	getifaddrs \
 	getopt_long_only \
 	getpwuid \
 	gettimeofday \
diff --git a/configure.ac b/configure.ac
index 573d290..9ec90f9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2047,6 +2047,7 @@ AC_CHECK_FUNCS(\
 	futimesat \
 	getattrlist \
 	getauxval \
+	getifaddrs \
 	getopt_long_only \
 	getpwuid \
 	gettimeofday \
diff --git a/dlls/iphlpapi/ifenum.c b/dlls/iphlpapi/ifenum.c
index 3070ae5..eed1be1 100644
--- a/dlls/iphlpapi/ifenum.c
+++ b/dlls/iphlpapi/ifenum.c
@@ -815,7 +815,7 @@ static DWORD getIPAddrRowByName(PMIB_IPADDRROW ipAddrRow, const char *ifName,
   return ret;
 }
 
-#ifdef HAVE_IFADDRS_H
+#if defined(HAVE_IFADDRS_H) && defined(HAVE_GETIFADDRS)
 
 /* Counts the IPv4 addresses in the system using the return value from
  * getifaddrs, returning the count.
diff --git a/include/config.h.in b/include/config.h.in
index 7cdf70c..18cacd5 100644
--- a/include/config.h.in
+++ b/include/config.h.in
@@ -204,6 +204,9 @@
 /* Define to 1 if you have the `getauxval' function. */
 #undef HAVE_GETAUXVAL
 
+/* Define to 1 if you have the `getifaddrs' function. */
+#undef HAVE_GETIFADDRS
+
 /* Define to 1 if you have the `getnameinfo' function. */
 #undef HAVE_GETNAMEINFO