Refactor `mk_def_file()` so that it is usable externally via a new

function ``mk_def_file_internal()`` which is called by a
new ``mk_def_file.py`` script. This will allow other build systems to
generate the ``api_dll.def`` file.

scripts/mk_def_file.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+"""
+Reads a list of Z3 API header files and
+generate a ``.def`` file to define the
+exported symbols of a dll. This file
+can be passed to the ``/DEF`` to the
+linker used by MSVC.
+"""
+import mk_util
+import argparse
+import logging
+import os
+import sys
+
+def main(args):
+  logging.basicConfig(level=logging.INFO)
+  parser = argparse.ArgumentParser(description=__doc__)
+  parser.add_argument("output_file", help="output def file path")
+  parser.add_argument("dllname", help="dllname to use in def file")
+  parser.add_argument("api_files", nargs="+")
+  pargs = parser.parse_args(args)
+
+  for api_file in pargs.api_files:
+    if not os.path.exists(api_file):
+      logging.error('"{}" does not exist'.format(api_file))
+      return 1
+
+  mk_util.mk_def_file_internal(
+    pargs.output_file,
+    pargs.dllname,
+    pargs.api_files)
+  return 0
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))
+

scripts/mk_util.py

@@ -2884,14 +2884,22 @@ def mk_all_gparams_register_modules():
 
 # Generate a .def based on the files at c.export_files slot.
 def mk_def_file(c):
-    pat1 = re.compile(".*Z3_API.*")
     defname = '%s.def' % os.path.join(c.src_dir, c.name)
-    fout = open(defname, 'w')
-    fout.write('LIBRARY "%s"\nEXPORTS\n' % c.dll_name)
-    num = 1
+    dll_name = c.dll_name
+    export_header_files = []
     for dot_h in c.export_files:
         dot_h_c = c.find_file(dot_h, c.name)
-        api = open(os.path.join(dot_h_c.src_dir, dot_h), 'r')
+        api = os.path.join(dot_h_c.src_dir, dot_h)
+        export_header_files.append(api)
+    mk_def_file_internal(defname, dll_name, export_header_files)
+
+def mk_def_file_internal(defname, dll_name, export_header_files):
+    pat1 = re.compile(".*Z3_API.*")
+    fout = open(defname, 'w')
+    fout.write('LIBRARY "%s"\nEXPORTS\n' % dll_name)
+    num = 1
+    for export_header_file in export_header_files:
+        api = open(export_header_file, 'r')
         for line in api:
             m = pat1.match(line)
             if m: