From a5fb87af8713a6c3678cf7546a2f682d9278f60e Mon Sep 17 00:00:00 2001
From: "Nicolas \"Pixel\" Noble" <pixel@nobis-crew.org>
Date: Wed, 28 Mar 2018 06:56:01 +0200
Subject: [PATCH] Hide symbols.

Fixes #240.
---
 packages/grpc-native-core/binding.gyp                    | 3 +++
 packages/grpc-native-core/templates/binding.gyp.template | 6 +++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/packages/grpc-native-core/binding.gyp b/packages/grpc-native-core/binding.gyp
index aa4d4be6..8de8a228 100644
--- a/packages/grpc-native-core/binding.gyp
+++ b/packages/grpc-native-core/binding.gyp
@@ -64,6 +64,7 @@
         '-Wno-unused-parameter',
         '-DOSATOMIC_USE_INLINED=1',
         '-Wno-deprecated-declarations',
+        '-fvisibility=hidden',
     ],
     'ldflags': [
         '-g',
@@ -188,6 +189,7 @@
               '-Wno-unused-parameter',
               '-DOSATOMIC_USE_INLINED=1',
               '-Wno-deprecated-declarations',
+              '-fvisibility=hidden',
           ],
           'OTHER_CPLUSPLUSFLAGS': [
               '-g',
@@ -198,6 +200,7 @@
               '-Wno-unused-parameter',
               '-DOSATOMIC_USE_INLINED=1',
               '-Wno-deprecated-declarations',
+              '-fvisibility=hidden',
             '-stdlib=libc++',
             '-std=c++11',
             '-Wno-error=deprecated-declarations'
diff --git a/packages/grpc-native-core/templates/binding.gyp.template b/packages/grpc-native-core/templates/binding.gyp.template
index e5eebfed..11eb8e60 100644
--- a/packages/grpc-native-core/templates/binding.gyp.template
+++ b/packages/grpc-native-core/templates/binding.gyp.template
@@ -58,7 +58,7 @@
       % for arg, prop in [('CPPFLAGS', 'cflags'), ('LDFLAGS', 'ldflags')]:
       %  if defaults['global'].get(arg, None) is not None:
       '${prop}': [
-        % for item in defaults['global'].get(arg).split():
+        % for item in defaults['global'].get(arg).split() + (['-fvisibility=hidden'] if arg == 'CPPFLAGS' else []):
           '${item}',
         % endfor
       ],
@@ -169,12 +169,12 @@
           'xcode_settings': {
             % if defaults['global'].get('CPPFLAGS', None) is not None:
             'OTHER_CFLAGS': [
-              % for item in defaults['global'].get('CPPFLAGS').split():
+              % for item in defaults['global'].get('CPPFLAGS').split() + ['-fvisibility=hidden']:
                 '${item}',
               % endfor
             ],
             'OTHER_CPLUSPLUSFLAGS': [
-              % for item in defaults['global'].get('CPPFLAGS').split():
+              % for item in defaults['global'].get('CPPFLAGS').split() + ['-fvisibility=hidden']:
                 '${item}',
               % endfor
               '-stdlib=libc++',