From: Chun-wei Fan <fanchunwei@src.gnome.org>
Date: Tue, 24 Oct 2023 06:54:19 +0000 (+0800)
Subject: builds: Require -Zc:preprocessor for Visual Studio debug builds
X-Git-Tag: archive/raspbian/4.12.4+ds-3+rpi1^2~21^2^2~17
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=287436a26dfda0647d551e45b1e8b27aa44062f6;p=gtk4.git

builds: Require -Zc:preprocessor for Visual Studio debug builds

This flag is actually required for the debugging code to successfully build,
so check that it is really there for debug-enabled Visual Studio builds.
---

diff --git a/meson.build b/meson.build
index 55d8dcc2be..0c42d4cb3d 100644
--- a/meson.build
+++ b/meson.build
@@ -248,12 +248,23 @@ endif
 
 # Compiler flags
 if cc.get_id() == 'msvc'
+  required_cflags = []
+  required_debug_cflags = '-Zc:preprocessor'
   test_cflags = [
     '-FI@0@/build-aux/msvc/msvc_recommended_pragmas.h'.format(meson.project_source_root()),
     '-D_USE_MATH_DEFINES',
-    '-Zc:preprocessor'
+    required_debug_cflags
   ]
-  add_project_arguments(cc.get_supported_arguments(test_cflags), language: 'c')
+  msvc_supported_cflags = cc.get_supported_arguments(test_cflags)
+  if debug
+    required_cflags += required_debug_cflags
+  endif
+  foreach f : required_cflags
+    if not msvc_supported_cflags.contains(f)
+      error('@0@ required for this build'.format(f))
+    endif
+  endforeach
+  add_project_arguments(msvc_supported_cflags, language: 'c')
 
   add_languages('cpp')
   cxx = meson.get_compiler('cpp')