build: export openssl symbols on windows

Export symbols from the bundled openssl for add-ons to link against.

Fixes: https://github.com/nodejs/node-v0.x-archive/issues/4051
PR-URL: https://github.com/nodejs/node/pull/6274
Reviewed-By: James M Snell <jasnell@gmail.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/tools/mkssldef.py b/tools/mkssldef.py
new file mode 100755
index 0000000000..8cbdbabd97
--- /dev/null
+++ b/tools/mkssldef.py
@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+
+from __future__ import print_function
+import re
+import sys
+
+categories = []
+defines = []
+excludes = []
+
+if __name__ == '__main__':
+  out = sys.stdout
+  filenames = sys.argv[1:]
+
+  while filenames and filenames[0].startswith('-'):
+    option = filenames.pop(0)
+    if option == '-o': out = open(filenames.pop(0), 'w')
+    elif option.startswith('-C'): categories += option[2:].split(',')
+    elif option.startswith('-D'): defines += option[2:].split(',')
+    elif option.startswith('-X'): excludes += option[2:].split(',')
+
+  excludes = map(re.compile, excludes)
+  exported = []
+
+  for filename in filenames:
+    for line in open(filename).readlines():
+      name, _, meta, _ = re.split('\s+', line)
+      if any(map(lambda p: p.match(name), excludes)): continue
+      meta = meta.split(':')
+      assert meta[0] in ('EXIST', 'NOEXIST')
+      assert meta[2] in ('FUNCTION', 'VARIABLE')
+      if meta[0] != 'EXIST': continue
+      if meta[2] != 'FUNCTION': continue
+      def satisfy(expr, rules):
+        def test(expr):
+          if expr.startswith('!'): return not expr[1:] in rules
+          return expr == '' or expr in rules
+        return all(map(test, expr.split(',')))
+      if not satisfy(meta[1], defines): continue
+      if not satisfy(meta[3], categories): continue
+      exported.append(name)
+
+  print('EXPORTS', file=out)
+  for name in sorted(exported): print('    ', name, file=out)