add has_type method

Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>

compilers.py

@@ -401,6 +401,14 @@ void bar() {
 '''
         return self.compiles(templ % (prefix, typename, membername))
 
+    def has_type(self, typename, prefix):
+        templ = '''%s
+void bar() {
+    sizeof(%s);
+};
+'''
+        return self.compiles(templ % (prefix, typename))
+
     def thread_flags(self):
         return ['-pthread']
 

interpreter.py

@@ -502,6 +502,7 @@ class CompilerHolder(InterpreterObject):
                              'run' : self.run_method,
                              'has_function' : self.has_function_method,
                              'has_member' : self.has_member_method,
+                             'has_type' : self.has_type_method,
                              'alignment' : self.alignment_method,
                              'version' : self.version_method,
                              'cmd_array' : self.cmd_array_method,
@@ -578,6 +579,22 @@ class CompilerHolder(InterpreterObject):
         mlog.log('Checking for function "', mlog.bold(funcname), '": ', hadtxt, sep='')
         return had
 
+    def has_type_method(self, args, kwargs):
+        if len(args) != 1:
+            raise InterpreterException('Has_type takes exactly one argument.')
+        check_stringlist(args)
+        typename = args[0]
+        prefix = kwargs.get('prefix', '')
+        if not isinstance(prefix, str):
+            raise InterpreterException('Prefix argument of has_type must be a string.')
+        had = self.compiler.has_type(typename, prefix)
+        if had:
+            hadtxt = mlog.green('YES')
+        else:
+            hadtxt = mlog.red('NO')
+        mlog.log('Checking for type "', mlog.bold(typename), '": ', hadtxt, sep='')
+        return had
+
     def sizeof_method(self, args, kwargs):
         if len(args) != 1:
             raise InterpreterException('Sizeof takes exactly one argument.')

test cases/common/83 has type/meson.build

@@ -0,0 +1,11 @@
+project('has type', 'c')
+
+cc = meson.get_compiler('c')
+
+if not cc.has_type('time_t', prefix : '#include<time.h>')
+  error('Did not detect type that exists.')
+endif
+
+if cc.has_type('no_time_t', prefix : '#include<time.h>')
+  error('Not existing type found.')
+endif