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-rw-r--r--mesonbuild/interpreter.py12
-rwxr-xr-xrun_unittests.py8
2 files changed, 17 insertions, 3 deletions
diff --git a/mesonbuild/interpreter.py b/mesonbuild/interpreter.py
index 26405e2..cd608db 100644
--- a/mesonbuild/interpreter.py
+++ b/mesonbuild/interpreter.py
@@ -2494,7 +2494,13 @@ to directly access options of other subprojects.''')
self.add_base_options(comp)
return success
+ def emit_base_options_warnings(self, enabled_opts):
+ if 'b_bitcode' in enabled_opts:
+ mlog.warning('Base option \'b_bitcode\' is enabled, which is incompatible with many linker options. Incompatible options such as such as \'b_asneeded\' have been disabled.')
+ mlog.warning('Please see https://mesonbuild.com/Builtin-options.html#Notes_about_Apple_Bitcode_support for more details.')
+
def add_base_options(self, compiler):
+ enabled_opts = []
proj_opt = self.environment.cmd_line_options.projectoptions
for optname in compiler.base_options:
if optname in self.coredata.base_options:
@@ -2502,9 +2508,13 @@ to directly access options of other subprojects.''')
oobj = compilers.base_options[optname]
for po in proj_opt:
if po.startswith(optname + '='):
- oobj.set_value(po.split('=', 1)[1])
+ opt, value = po.split('=', 1)
+ oobj.set_value(value)
+ if oobj.value:
+ enabled_opts.append(opt)
break
self.coredata.base_options[optname] = oobj
+ self.emit_base_options_warnings(enabled_opts)
def program_from_cross_file(self, prognames, silent=False):
bins = self.environment.cross_info.config['binaries']
diff --git a/run_unittests.py b/run_unittests.py
index ca8bc62..1400db7 100755
--- a/run_unittests.py
+++ b/run_unittests.py
@@ -3224,13 +3224,17 @@ endian = 'little'
to inspect the compiler database.
'''
if not is_osx():
- raise unittest.SkipTest('Apple bitcode not relevant')
+ raise unittest.SkipTest('Apple bitcode only works on macOS')
testdir = os.path.join(self.common_test_dir, '4 shared')
# Try with bitcode enabled
- self.init(testdir, extra_args='-Db_bitcode=true')
+ 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'])
build_ninja = os.path.join(self.builddir, 'build.ninja')
+ # Linker options were added
with open(build_ninja, 'r', encoding='utf-8') as f:
contents = f.read()
m = re.search('LINK_ARGS =.*-bitcode_bundle', contents)