build_mini: compile mapcut from source if needed

build_mini.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 
+import os
 import sys
 import datetime
 import subprocess
@@ -8,27 +9,41 @@
 
 
 version = 'v1.3.0-BETA'
-
 cut_titles = ['e_rajastan', 'e_mali', 'k_sahara', 'k_fezzan', 'k_kanem', 'k_hausaland']
+scons_bin_path = '/usr/bin/scons'
 
 mini_path = rootpath / 'MiniSWMH/MiniSWMH'
 mapcut_path = rootpath / 'ck2utils/mapcut'
 
 
+def build_mapcut():
+    print(">> attempting to build mapcut from source...")
+    os.chdir(str(mapcut_path))
+    try:
+        sys.stdout.write(subprocess.check_output(scons_bin_path, universal_newlines=True, stderr=subprocess.STDOUT))
+    except subprocess.CalledProcessError as e:
+        sys.stderr.write('> scons failed!\n> command: {}\n> exit code: {}\n\n{}'.format(e.cmd, e.returncode, e.output))
+        sys.exit(1)
+
+
 def main():
     mapcut_bin = 'mapcut' if sys.platform.startswith('linux') else 'mapcut.exe'
     mapcut_bin_path = mapcut_path / mapcut_bin
 
+    if not mapcut_bin_path.exists():
+        build_mapcut()
     if not mapcut_bin_path.exists():
         sys.stderr.write('mapcut binary not found: {}\n'.format(mapcut_bin_path))
-        return 1
+        return 2
+
+    print(">> executing mapcut...")
 
     try:
         sys.stdout.write(subprocess.check_output([str(mapcut_bin_path)] + cut_titles,
                                                  universal_newlines=True, stderr=subprocess.STDOUT))
     except subprocess.CalledProcessError as e:
-        sys.stderr.write('mapcut failed!\ncommand: {}\nexit code: {}\n\n{}'.format(e.cmd, e.returncode, e.output))
-        return 2
+        sys.stderr.write('> mapcut failed!\n> command: {}\n> exit code: {}\n\n{}'.format(e.cmd, e.returncode, e.output))
+        return 3
 
     with (mini_path / 'version.txt').open('w') as f:
         print('{} - {}'.format(version, datetime.date.today()), file=f)