[dpdk-dev] [PATCH v2] windows: build warnings with clang

[Nick Connolly <nick.connolly@mayadata.io>]

Microsoft CRT defines Windows-specific secure alternatives to
standard library functions and triggers warnings when "insecure"
functions are used [1]. However, calling code already has all
necessary checks around those functions, so these warnings are not
useful for DPDK. MinGW provides its own CRT without this issue.

[1]:
https://docs.microsoft.com/en-us/cpp/c-runtime-library/security-features-in-the-crt?view=msvc-160

Disable this by defining -D_CRT_SECURE_NO_WARNINGS.

Signed-off-by: Nick Connolly <nick.connolly@mayadata.io>
---
v2:
* Adjust commit wording as per Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>

Note: It is unclear exactly which commit this fixes.  It is probably a
consequence of building more libraries for Windows.

 config/meson.build | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/config/meson.build b/config/meson.build
index c02802c18..a3154e29c 100644
--- a/config/meson.build
+++ b/config/meson.build
@@ -279,6 +279,11 @@ if is_windows
 		add_project_arguments('-D__USE_MINGW_ANSI_STDIO', language: 'c')
 	endif
 
+	# Disable secure CRT deprecated warnings for clang
+	if cc.get_id() == 'clang'
+		add_project_arguments('-D_CRT_SECURE_NO_WARNINGS', language: 'c')
+	endif
+
 	add_project_link_arguments('-lws2_32', language: 'c')
 
 	# Contrary to docs, VirtualAlloc2() is exported by mincore.lib
-- 
2.25.1