[build] add a test_all_confs target

finds all conf files and compiles all aircrafts for each conf

find_confs.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+
+import os
+from fnmatch import fnmatch
+
+def find_conf_files(pprz_home, conf_dir, exclude_backups=True):
+    conf_files = []
+    pattern = "*conf[._-]*xml"
+    backup_pattern = "*conf[._-]*xml.20[0-9][0-9]-[01][0-9]-[0-3][0-9]_*"
+    excludes = ["%gconf.xml"]
+
+    for path, subdirs, files in os.walk(conf_dir):
+        for name in files:
+            if exclude_backups and fnmatch(name, backup_pattern):
+                continue
+            if fnmatch(name, pattern):
+                filepath = os.path.join(path, name)
+                entry = os.path.relpath(filepath, pprz_home)
+                if not os.path.islink(filepath) and name not in excludes:
+                    conf_files.append(entry)
+    return conf_files
+
+if __name__ == "__main__":
+    paparazzi_home = os.getenv("PAPARAZZI_HOME", os.path.dirname(os.path.abspath(__file__)))
+    # print("PAPARAZZI_HOME=" + paparazzi_home)
+    conf_dir = os.path.join(paparazzi_home, "conf")
+    # print("conf dir: " + conf_dir)
+    conf_files = find_conf_files(paparazzi_home, conf_dir)
+    print(" ".join(conf_files))