small tweaks

setup.py

@@ -13,17 +13,17 @@ class _deferred_pybind11_include(object):
 
 include_dirs = ['./', _deferred_pybind11_include(True),
                 _deferred_pybind11_include()]
-extra_compile_args = []
+extra_compile_args = ['--std=c++11', '-march=native', '-O3']
 python_module_link_args = []
 
 if sys.platform == 'darwin':
     import distutils.sysconfig
-    extra_compile_args += ['--std=c++11', '--stdlib=libc++', '-mmacosx-version-min=10.9', '-march=native', '-O3']
+    extra_compile_args += ['--stdlib=libc++', '-mmacosx-version-min=10.9']
     vars = distutils.sysconfig.get_config_vars()
     vars['LDSHARED'] = vars['LDSHARED'].replace('-bundle', '')
     python_module_link_args+=['-bundle']
 else:
-    extra_compile_args += ['--std=c++11', '-march=native', '-O3', '-Wfatal-errors', '-Wno-ignored-attributes', '-DPOCKETFFT_OPENMP', '-fopenmp', '-Wfloat-conversion' ,'-Wsign-conversion', '-Wconversion' ,'-W', '-Wall']
+    extra_compile_args += ['-DPOCKETFFT_OPENMP', '-fopenmp', '-Wfatal-errors', '-Wfloat-conversion' ,'-Wsign-conversion', '-Wconversion' ,'-W', '-Wall', '-Wstrict-aliasing=2', '-Wwrite-strings', '-Wredundant-decls', '-Woverloaded-virtual', '-Wcast-qual', '-Wcast-align', '-Wpointer-arith']
     python_module_link_args += ['-march=native', '-Wl,-rpath,$ORIGIN', '-fopenmp']
 
 # if you don't want debugging info, add "-s" to python_module_link_args
@@ -31,6 +31,7 @@ else:
 
 def get_extension_modules():
     return [Extension('pypocketfft',
+                      language='c++',
                       sources=['pypocketfft.cc'],
                       depends=['pocketfft_hdronly.h'],
                       include_dirs=include_dirs,