From: Guy Harris <guy@alum.mit.edu>
Date: Tue, 20 Mar 2018 20:05:47 +0000 (-0700)
Subject: Squelch another warning from Microsoft's headers.
X-Git-Tag: libpcap-1.9-bp~205
X-Git-Url: https://git.tcpdump.org/libpcap/commitdiff_plain/2a870ce70cd7ce6817af503be265dbd9af45a00d

Squelch another warning from Microsoft's headers.
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 91db5590..a67abc35 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1588,6 +1588,13 @@ if(EXISTS ${CMAKE_SOURCE_DIR}/.devel)
         #
         check_and_add_compiler_option(-wd4255)
         #
+        # Perhaps testing something #defined to be 0 with #ifdef is an
+        # error, and it should be tested with #if, but perhaps it's
+        # not, and Microsoft does that in its headers, so we squelch
+        # that warning.
+        #
+        check_and_add_compiler_option(-wd4574)
+        #
         # The Windows headers also test not-defined values in #if, so
         # we don't want warnings about that, either.
         #