Do not fail on passing `-Werror=unused-parameter` from environment

mesonbuild/compilers/c.py

@@ -58,7 +58,7 @@ class CCompiler(CLikeCompiler, Compiler):
         return ['-nostdinc']
 
     def sanity_check(self, work_dir, environment):
-        code = 'int main(int argc, char **argv) { int class=0; return class; }\n'
+        code = 'int main() { int class=0; return class; }\n'
         return self.sanity_check_impl(work_dir, environment, 'sanitycheckc.c', code)
 
     def has_header_symbol(self, hname, symbol, prefix, env, *, extra_args=None, dependencies=None):

mesonbuild/compilers/clike.py

@@ -295,7 +295,7 @@ class CLikeCompiler:
             raise mesonlib.EnvironmentException('Executables created by {0} compiler {1} are not runnable.'.format(self.language, self.name_string()))
 
     def sanity_check(self, work_dir, environment):
-        code = 'int main(int argc, char **argv) { int class=0; return class; }\n'
+        code = 'int main() { int class=0; return class; }\n'
         return self.sanity_check_impl(work_dir, environment, 'sanitycheckc.c', code)
 
     def check_header(self, hname, prefix, env, *, extra_args=None, dependencies=None):
@@ -494,7 +494,7 @@ class CLikeCompiler:
         fargs = {'prefix': prefix, 'expression': expression}
         t = '''#include<stdio.h>
         {prefix}
-        int main(int argc, char **argv) {{
+        int main() {{
             printf("%ld\\n", (long)({expression}));
             return 0;
         }};'''
@@ -512,7 +512,7 @@ class CLikeCompiler:
         fargs = {'prefix': prefix, 'type': typename}
         t = '''#include <stdio.h>
         {prefix}
-        int main(int argc, char **argv) {{
+        int main() {{
             {type} something;
             return 0;
         }}'''
@@ -530,7 +530,7 @@ class CLikeCompiler:
                                      dependencies=dependencies)
         t = '''#include<stdio.h>
         {prefix}
-        int main(int argc, char **argv) {{
+        int main() {{
             printf("%ld\\n", (long)(sizeof({type})));
             return 0;
         }};'''
@@ -548,7 +548,7 @@ class CLikeCompiler:
         fargs = {'prefix': prefix, 'type': typename}
         t = '''#include <stdio.h>
         {prefix}
-        int main(int argc, char **argv) {{
+        int main() {{
             {type} something;
         }}'''
         if not self.compiles(t.format(**fargs), env, extra_args=extra_args,
@@ -576,7 +576,7 @@ class CLikeCompiler:
             char c;
             {type} target;
         }};
-        int main(int argc, char **argv) {{
+        int main() {{
             printf("%d", (int)offsetof(struct tmp, target));
             return 0;
         }}'''
@@ -626,7 +626,7 @@ class CLikeCompiler:
         fargs = {'prefix': prefix, 'f': fname, 'cast': cast, 'fmt': fmt}
         code = '''{prefix}
         #include <stdio.h>
-        int main(int argc, char *argv[]) {{
+        int main() {{
             printf ("{fmt}", {cast} {f}());
         }}'''.format(**fargs)
         res = self.run(code, env, extra_args=extra_args, dependencies=dependencies)
@@ -1026,7 +1026,7 @@ class CLikeCompiler:
         return value[:]
 
     def find_library(self, libname, env, extra_dirs, libtype: LibType = LibType.PREFER_SHARED):
-        code = 'int main(int argc, char **argv) { return 0; }'
+        code = 'int main() { return 0; }'
         return self.find_library_impl(libname, env, extra_dirs, code, libtype)
 
     def find_framework_paths(self, env):
@@ -1056,7 +1056,7 @@ class CLikeCompiler:
         return paths
 
     def find_framework_real(self, name, env, extra_dirs, allow_system):
-        code = 'int main(int argc, char **argv) { return 0; }'
+        code = 'int main() { return 0; }'
         link_args = []
         for d in extra_dirs:
             link_args += ['-F' + d]
@@ -1139,7 +1139,7 @@ class CLikeCompiler:
             args = fatal_warnings_args + args
 
         args = self.linker_to_compiler_args(args)
-        code = 'int main(int argc, char **argv) { return 0; }'
+        code = 'int main() { return 0; }'
         return self.has_arguments(args, env, code, mode='link')
 
     @staticmethod

mesonbuild/compilers/cpp.py

@@ -69,7 +69,7 @@ class CPPCompiler(CLikeCompiler, Compiler):
         return ['-nostdinc++']
 
     def sanity_check(self, work_dir, environment):
-        code = 'class breakCCompiler;int main(int argc, char **argv) { return 0; }\n'
+        code = 'class breakCCompiler;int main() { return 0; }\n'
         return self.sanity_check_impl(work_dir, environment, 'sanitycheckcpp.cc', code)
 
     def get_compiler_check_args(self):

mesonbuild/compilers/objc.py

@@ -40,7 +40,7 @@ class ObjCCompiler(CLikeCompiler, Compiler):
             extra_flags += environment.coredata.get_external_link_args(self.for_machine, self.language)
         with open(source_name, 'w') as ofile:
             ofile.write('#import<stdio.h>\n'
-                        'int main(int argc, char **argv) { return 0; }\n')
+                        'int main() { return 0; }\n')
         pc = subprocess.Popen(self.exelist + extra_flags + [source_name, '-o', binary_name])
         pc.wait()
         if pc.returncode != 0:

mesonbuild/compilers/objcpp.py

@@ -41,7 +41,7 @@ class ObjCPPCompiler(CLikeCompiler, Compiler):
         with open(source_name, 'w') as ofile:
             ofile.write('#import<stdio.h>\n'
                         'class MyClass;'
-                        'int main(int argc, char **argv) { return 0; }\n')
+                        'int main() { return 0; }\n')
         pc = subprocess.Popen(self.exelist + extra_flags + [source_name, '-o', binary_name])
         pc.wait()
         if pc.returncode != 0: