test: add lib path env when node_shared=true

When building the node with `--shared` option, the major output is the
shared library. However, we still build a node executable which links
to the shared lib. It's for testing purpose. When testing with the
executable, some test cases move/copy the executable, change the
relative path to the shared library and fail. Using lib path env would
solve the issue. However, in macOS, need to change the install name for
the shared library and use rpath in the executable. In AIX, `-brtl`
linker option rebinds the symbols in the executable and addon modules
could use them.

Signed-off-by: Yihong Wang <yh.wang@ibm.com>

PR-URL: https://github.com/nodejs/node/pull/18626
Refs: https://github.com/nodejs/node/issues/18535
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

node.gyp

@@ -260,6 +260,11 @@
             }],
           ],
         }],
+        [ 'node_shared=="true"', {
+          'xcode_settings': {
+            'OTHER_LDFLAGS': [ '-Wl,-rpath,@loader_path', ],
+          },
+        }],
         [ 'node_intermediate_lib_type=="shared_library" and OS=="win"', {
           # On Windows, having the same name for both executable and shared
           # lib causes filename collision. Need a different PRODUCT_NAME for
@@ -416,6 +421,10 @@
       'conditions': [
         [ 'node_shared=="true" and node_module_version!="" and OS!="win"', {
           'product_extension': '<(shlib_suffix)',
+          'xcode_settings': {
+            'LD_DYLIB_INSTALL_NAME':
+              '@rpath/lib<(node_core_target_name).<(shlib_suffix)'
+          },
         }],
         ['node_shared=="true" and OS=="aix"', {
           'product_name': 'node_base',
@@ -1130,6 +1139,9 @@
             '<@(library_files)',
             'common.gypi',
           ],
+          'direct_dependent_settings': {
+            'ldflags': [ '-Wl,-brtl' ],
+          },
         },
       ]
     }], # end aix section

test/common/shared-lib-util.js

@@ -0,0 +1,29 @@
+/* eslint-disable required-modules */
+'use strict';
+const path = require('path');
+
+// If node executable is linked to shared lib, need to take care about the
+// shared lib path.
+exports.addLibraryPath = function(env) {
+  if (!process.config.variables.node_shared) {
+    return;
+  }
+
+  env = env || process.env;
+
+  env.LD_LIBRARY_PATH =
+    (env.LD_LIBRARY_PATH ? env.LD_LIBRARY_PATH + path.delimiter : '') +
+    path.join(path.dirname(process.execPath), 'lib.target');
+  // For AIX.
+  env.LIBPATH =
+    (env.LIBPATH ? env.LIBPATH + path.delimiter : '') +
+    path.join(path.dirname(process.execPath), 'lib.target');
+  // For Mac OSX.
+  env.DYLD_LIBRARY_PATH =
+    (env.DYLD_LIBRARY_PATH ? env.DYLD_LIBRARY_PATH + path.delimiter : '') +
+    path.dirname(process.execPath);
+  // For Windows.
+  env.PATH =
+    (env.PATH ? env.PATH + path.delimiter : '') +
+    path.dirname(process.execPath);
+};

test/parallel/test-child-process-fork-exec-path.js

@@ -28,6 +28,9 @@ const tmpdir = require('../common/tmpdir');
 const msg = { test: 'this' };
 const nodePath = process.execPath;
 const copyPath = path.join(tmpdir.path, 'node-copy.exe');
+const { addLibraryPath } = require('../common/shared-lib-util');
+
+addLibraryPath(process.env);
 
 if (process.env.FORK) {
   assert(process.send);

test/parallel/test-module-loading-globalpaths.js

@@ -6,6 +6,9 @@ const path = require('path');
 const fs = require('fs');
 const child_process = require('child_process');
 const pkgName = 'foo';
+const { addLibraryPath } = require('../common/shared-lib-util');
+
+addLibraryPath(process.env);
 
 if (process.argv[2] === 'child') {
   console.log(require(pkgName).string);