Fix preprocessor conformance with MSVC

diff --git a/meson.build b/meson.build
index 1f3ac591f31bfe737d95358697421144279dec2f..035efb24222d4f52f4aa63eac20bb89e067a4938 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -256,6 +256,7 @@ if cc.get_id() == 'msvc'
     '-FImsvc_recommended_pragmas.h',
        '-D_USE_MATH_DEFINES',
        '-utf-8',
+  '-Zc:preprocessor'
   ]
   add_project_arguments(cc.get_supported_arguments(test_cflags), language: 'c')