allow building wheels as well as packages on linux

Author: robhagemans

package.py

@@ -397,7 +397,9 @@ def bdist_rpm():
     subprocess.call((
         'fpm', '-t', 'rpm', '-s', 'python', '--no-auto-depends',
         '--prefix=/usr/local/lib/python2.7/site-packages/',
-        '--depends=numpy,pyserial,SDL2,SDL2_gfx', '..'
+        '--depends=numpy,pyserial,SDL2,SDL2_gfx',
+        '--python-setup-py-arguments=--called-by-fpm',
+        '../setup.py'
     ), cwd='dist')
     shutil.rmtree('resources')
     wash()
@@ -416,7 +418,8 @@ def bdist_deb():
         'fpm', '-t', 'deb', '-s', 'python', '--no-auto-depends',
         '--prefix=/usr/local/lib/python2.7/site-packages/',
         '--depends=python-numpy,python-serial,python-parallel,libsdl2-2.0-0,libsdl2-gfx-1.0-0',
-        '..'
+        '--python-setup-py-arguments=--called-by-fpm',
+        '../setup.py'
     ), cwd='dist')
     shutil.rmtree('resources')
     wash()

setup.py

@@ -227,8 +227,11 @@ def build_py_ext(obj):
     SETUP_OPTIONS['entry_points']['gui_scripts'] = ['pcbasicw=pcbasic:main']
 
 
-elif sys.platform.startswith('linux'):
+elif '--called-by-fpm' in sys.argv:
     # these need to be included in the sdist metadata for the packaging script to pick them up
+    # we ask fpm to include a special argument to avoid breaking other calls
+
+    sys.argv.remove('--called-by-fpm')
 
     _TARGET = '/usr/local/'