Bundle SSL certs with the templates.

If this is undesired it can be avoided by specifying builtin_certs=no .
Bundled SSL certs will be used unless you specify an override in:
Project Settings -> SSL -> Certificates .

core/core_builders.py

@@ -4,7 +4,36 @@ All such functions are invoked in a subprocess on Windows to prevent build flaki
 
 """
 from platform_methods import subprocess_main
-from compat import iteritems, itervalues, open_utf8, escape_string
+from compat import iteritems, itervalues, open_utf8, escape_string, byte_to_str
+
+
+def make_certs_header(target, source, env):
+
+    src = source[0]
+    dst = target[0]
+    f = open(src, "rb")
+    g = open_utf8(dst, "w")
+    buf = f.read()
+    decomp_size = len(buf)
+    import zlib
+    buf = zlib.compress(buf)
+
+    g.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
+    g.write("#ifndef _CERTS_RAW_H\n")
+    g.write("#define _CERTS_RAW_H\n")
+    if env['builtin_certs']:
+        # Defined here and not in env so changing it does not trigger a full rebuild.
+        g.write("#define BUILTIN_CERTS_ENABLED\n")
+        g.write("static const int _certs_compressed_size = " + str(len(buf)) + ";\n")
+        g.write("static const int _certs_uncompressed_size = " + str(decomp_size) + ";\n")
+        g.write("static const unsigned char _certs_compressed[] = {\n")
+        for i in range(len(buf)):
+            g.write("\t" + byte_to_str(buf[i]) + ",\n")
+        g.write("};\n")
+    g.write("#endif")
+
+    g.close()
+    f.close()
 
 
 def make_authors_header(target, source, env):