[setup] init LD_LIBRARY_PATH in cx_Freeze

As it cannot be modified later in python.

setupInitScriptUnix.py

@@ -0,0 +1,40 @@
+#------------------------------------------------------------------------------
+# ConsoleSetLibPath.py
+#   Initialization script for cx_Freeze which manipulates the path so that the
+# directory in which the executable is found is searched for extensions but
+# no other directory is searched. The environment variable LD_LIBRARY_PATH is
+# manipulated first, however, to ensure that shared libraries found in the
+# target directory are found. This requires a restart of the executable because
+# the environment variable LD_LIBRARY_PATH is only checked at startup.
+#------------------------------------------------------------------------------
+
+import os
+import sys
+import zipimport
+
+FILE_NAME = sys.executable
+DIR_NAME = os.path.dirname(sys.executable)
+
+paths = os.environ.get("LD_LIBRARY_PATH", "").split(os.pathsep)
+
+if DIR_NAME not in paths:
+    paths.insert(0, DIR_NAME)
+    paths.insert(0, os.path.join(DIR_NAME, "lib"))
+    paths.insert(0, os.path.join(DIR_NAME, "aliceVision", "lib"))
+    paths.insert(0, os.path.join(DIR_NAME, "aliceVision", "lib64"))
+
+    os.environ["LD_LIBRARY_PATH"] = os.pathsep.join(paths)
+    os.execv(sys.executable, sys.argv)
+
+sys.frozen = True
+sys.path = sys.path[:4]
+
+
+def run():
+    m = __import__("__main__")
+    importer = zipimport.zipimporter(os.path.dirname(os.__file__))
+    name, ext = os.path.splitext(os.path.basename(os.path.normcase(FILE_NAME)))
+    moduleName = "%s__main__" % name
+    code = importer.get_code(moduleName)
+    exec(code, m.__dict__)
+