Compile OpenSSL for NaCl

openssl_nacl.gyp

Index: openssl_nacl.gyp
diff --git a/openssl_nacl.gyp b/openssl_nacl.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..5129ef39411bc1bd228b4106f781635abf4e3dd6
--- /dev/null
+++ b/openssl_nacl.gyp
@@ -0,0 +1,65 @@
+# Copyright 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+{
+  'includes': [
+    '../../native_client/build/untrusted.gypi',
+  ],
+  'targets': [
+    {
+      'target_name': 'openssl_nacl',
+      'type': 'none',
+      'variables': {
+        'nlib_target': 'libopenssl_nacl.a',
+        'build_glibc': 0,
+        'build_newlib': 0,
+        'build_pnacl_newlib': 1,
+        'defines!': [
+          '_XOPEN_SOURCE=600',
+        ],
+      },
+      'dependencies': [
+        '<(DEPTH)/native_client/tools.gyp:prep_toolchain',
+        '<(DEPTH)/native_client_sdk/native_client_sdk_untrusted.gyp:nacl_io_untrusted',
+      ],
+      'includes': [
+        # Include the auto-generated gypi file.
+        'openssl.gypi'
+      ],
+      'sources': [
+        '<@(openssl_common_sources)',
+      ],
+      'defines': [
+        '<@(openssl_common_defines)',
+        'MONOLITH',
+        'NO_SYS_UN_H',
+        'NO_SYSLOG',
+        'OPENSSL_NO_ASM',
+        'PURIFY',
+        'TERMIOS',
+        'SSIZE_MAX=INT_MAX',
+      ],
+      'defines!': [
+        'TERMIO',

[wtc, 2014/01/10 02:06:27]

Why didn't you add the '_XOPEN_SOURCE=600' line here?

[Sergey Ulanov, 2014/01/10 02:10:04]

Because untrusted.gypi adds it in "variables->defines", so it would work if I
added it here :-(

[wtc, 2014/01/10 03:25:43]

I see. Thanks for the explanation.

I wonder if we just need the macro's name '_XOPEN_SOURCE' when trying to
undefine it.

[Sergey Ulanov, 2014/01/10 05:19:47]

I don't think that would work. gyp processes defines list just as any other
list, and it doesn't understand the semantics of the list elements (
https://code.google.com/p/gyp/wiki/InputFormatReference#Exclusion_Lists_(!) ).
Thought it should be possible to exclude it using patterns ('defines/'), that
would allow to avoid specifying define value.

+      ],
+      'include_dirs': [
+        '.',
+        'openssl',
+        'openssl/crypto',
+        'openssl/crypto/asn1',
+        'openssl/crypto/evp',
+        'openssl/crypto/modes',
+        'openssl/include',
+      ],
+      'direct_dependent_settings': {
+        'include_dirs': [
+          'openssl/include',
+        ],
+      },
+      'pnacl_compile_flags': [
+        '-Wno-sometimes-uninitialized',
+        '-Wno-unused-variable',
+      ],
+    },  # target openssl_nacl
+  ],
+}