Add no-warning args while building Vala C code

This is done by adding a new compiler method called 'no_warn_args' which
returns the argument(s) required for the compiler to emit no warnings
for that compilation.

This take care of not disabling warnings for C code compiled into the
BuildTarget. Also includes tests for ensuring all this.

https://github.com/mesonbuild/meson/issues/864

1 files changed, 5 insertions, 2 deletions

diff --git a/mesonbuild/backend/backends.py b/mesonbuild/backend/backends.py
index 16f7ada..1d3fddd 100644
--- a/mesonbuild/backend/backends.py
+++ b/mesonbuild/backend/backends.py
@@ -327,11 +327,14 @@ class Backend():
                 extra_args.append(arg)
         return extra_args
 
-    def generate_basic_compiler_args(self, target, compiler):
+    def generate_basic_compiler_args(self, target, compiler, no_warn_args=False):
         commands = []
         commands += self.get_cross_stdlib_args(target, compiler)
         commands += compiler.get_always_args()
-        commands += compiler.get_warn_args(self.environment.coredata.get_builtin_option('warning_level'))
+        if no_warn_args:
+            commands += compiler.get_no_warn_args()
+        else:
+            commands += compiler.get_warn_args(self.environment.coredata.get_builtin_option('warning_level'))
         commands += compiler.get_option_compile_args(self.environment.coredata.compiler_options)
         commands += self.build.get_global_args(compiler)
         commands += self.environment.coredata.external_args[compiler.get_language()]