compilers: Fix bitcode and other options for objc code

We were setting the base options for the Objective-C compiler
manually, due to which options such as b_bitcode and b_ndebug were not
getting set at all.

The base options here are the same as for C code with the Clang
compiler, so just use the same inherited list.

Also expand the bitcode test to ObjC and ObjC++ so this doesn't happen
again.

mesonbuild/compilers/objc.py

@@ -74,4 +74,3 @@ class ClangObjCCompiler(ClangCompiler, ObjCCompiler):
                           '1': default_warn_args,
                           '2': default_warn_args + ['-Wextra'],
                           '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']

mesonbuild/compilers/objcpp.py

@@ -75,4 +75,3 @@ class ClangObjCPPCompiler(ClangCompiler, ObjCPPCompiler):
                           '1': default_warn_args,
                           '2': default_warn_args + ['-Wextra'],
                           '3': default_warn_args + ['-Wextra', '-Wpedantic']}
-        self.base_options = ['b_pch', 'b_lto', 'b_pgo', 'b_sanitize', 'b_coverage']

run_unittests.py

@@ -4093,18 +4093,21 @@ class DarwinTests(BasePlatformTests):
         when it is false.  This can't be an ordinary test case because we need
         to inspect the compiler database.
         '''
-        testdir = os.path.join(self.common_test_dir, '4 shared')
-        # Try with bitcode enabled
-        out = self.init(testdir, extra_args='-Db_bitcode=true')
+        testdir = os.path.join(self.platform_test_dir, '7 bitcode')
         env = get_fake_env(testdir, self.builddir, self.prefix)
         cc = env.detect_c_compiler(MachineChoice.HOST)
         if cc.id != 'clang':
             raise unittest.SkipTest('Not using Clang on OSX')
+        # Try with bitcode enabled
+        out = self.init(testdir, extra_args='-Db_bitcode=true')
         # Warning was printed
         self.assertRegex(out, 'WARNING:.*b_bitcode')
         # Compiler options were added
-        compdb = self.get_compdb()
-        self.assertIn('-fembed-bitcode', compdb[0]['command'])
+        for compdb in self.get_compdb():
+            if 'module' in compdb['file']:
+                self.assertNotIn('-fembed-bitcode', compdb['command'])
+            else:
+                self.assertIn('-fembed-bitcode', compdb['command'])
         build_ninja = os.path.join(self.builddir, 'build.ninja')
         # Linker options were added
         with open(build_ninja, 'r', encoding='utf-8') as f:
@@ -4115,8 +4118,8 @@ class DarwinTests(BasePlatformTests):
         self.setconf('-Db_bitcode=false')
         # Regenerate build
         self.build()
-        compdb = self.get_compdb()
-        self.assertNotIn('-fembed-bitcode', compdb[0]['command'])
+        for compdb in self.get_compdb():
+            self.assertNotIn('-fembed-bitcode', compdb['command'])
         build_ninja = os.path.join(self.builddir, 'build.ninja')
         with open(build_ninja, 'r', encoding='utf-8') as f:
             contents = f.read()

test cases/osx/7 bitcode/libbar.mm

@@ -0,0 +1,7 @@
+#import <stdio.h>
+#import "vis.h"
+
+int EXPORT_PUBLIC libbar(int arg) {
+  return 0;
+}
+

test cases/osx/7 bitcode/libfile.c

@@ -0,0 +1,5 @@
+#include "vis.h"
+
+int EXPORT_PUBLIC libfunc() {
+    return 3;
+}

test cases/osx/7 bitcode/libfoo.m

@@ -0,0 +1,7 @@
+#import <stdio.h>
+#import "vis.h"
+
+int EXPORT_PUBLIC libfoo(int arg) {
+  return 0;
+}
+

test cases/osx/7 bitcode/meson.build

@@ -0,0 +1,10 @@
+project('bitcode test', 'c', 'objc', 'objcpp')
+
+both_libraries('alib', 'libfoo.m')
+shared_module('amodule', 'libfoo.m')
+
+both_libraries('blib', 'libbar.mm')
+shared_module('bmodule', 'libbar.mm')
+
+both_libraries('clib', 'libfile.c')
+shared_module('cmodule', 'libfile.c')

test cases/osx/7 bitcode/vis.h

@@ -0,0 +1,6 @@
+#if defined __GNUC__
+  #define EXPORT_PUBLIC __attribute__ ((visibility("default")))
+#else
+  #pragma message ("Compiler does not support symbol visibility.")
+  #define EXPORT_PUBLIC
+#endif