build: windows sharedlib support

Added "dll" option to vcbuild.bat
Ensure that Unix SO name is not used on Windows (i.e. produce a .dll file)
Ensure that Node and its V8 dependency link against the Visual C++ Runtime
dynamically.
Requires backported V8 patch

Ref: nodejs#7802

PR-URL: nodejs#7487
Reviewed-By: Alexis Campailla <alexis@janeasystems.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

common.gypi

@@ -79,6 +79,20 @@
  ['OS == "android"', {
  'cflags': [ '-fPIE' ],
  'ldflags': [ '-fPIE', '-pie' ]
+ }],
+ ['node_shared=="true"', {
+ 'msvs_settings': {
+ 'VCCLCompilerTool': {
+ 'RuntimeLibrary': 3 # MultiThreadedDebugDLL (/MDd)
+ }
+ }
+ }],
+ ['node_shared=="false"', {
+ 'msvs_settings': {
+ 'VCCLCompilerTool': {
+ 'RuntimeLibrary': 1 # MultiThreadedDebug (/MTd)
+ }
+ }
  }]
  ],
  'msvs_settings': {
@@ -116,11 +130,24 @@
  ['OS == "android"', {
  'cflags': [ '-fPIE' ],
  'ldflags': [ '-fPIE', '-pie' ]
+ }],
+ ['node_shared=="true"', {
+ 'msvs_settings': {
+ 'VCCLCompilerTool': {
+ 'RuntimeLibrary': 2 # MultiThreadedDLL (/MD)
+ }
+ }
+ }],
+ ['node_shared=="false"', {
+ 'msvs_settings': {
+ 'VCCLCompilerTool': {
+ 'RuntimeLibrary': 0 # MultiThreaded (/MT)
+ }
+ }
  }]
  ],
  'msvs_settings': {
  'VCCLCompilerTool': {
- 'RuntimeLibrary': 0, # static release
  'Optimization': 3, # /Ox, full optimization
  'FavorSizeOrSpeed': 1, # /Ot, favour speed over size
  'InlineFunctionExpansion': 2, # /Ob2, inline anything eligible

node.gyp

@@ -235,7 +235,7 @@
  'NODE_SHARED_MODE',
  ],
  'conditions': [
- [ 'node_module_version!=""', {
+ [ 'node_module_version!="" and OS!="win"', {
  'product_extension': 'so.<(node_module_version)',
  }]
  ],

vcbuild.bat

@@ -37,6 +37,7 @@ set build_release=
 set configure_flags=
 set build_addons=
 set enable_vtune_profiling=
+set dll=
 
 :next-arg
 if "%1"=="" goto args-done
@@ -76,6 +77,7 @@ if /i "%1"=="intl-none" set i18n_arg=%1&goto arg-ok
 if /i "%1"=="download-all" set download_arg="--download=all"&goto arg-ok
 if /i "%1"=="ignore-flaky" set test_args=%test_args% --flaky-tests=dontcare&goto arg-ok
 if /i "%1"=="enable-vtune" set enable_vtune_profiling="--enable-vtune-profiling"&goto arg-ok
+if /i "%1"=="dll" set dll=1&goto arg-ok
 
 echo Error: invalid command line option `%1`.
 exit /b 1
@@ -105,6 +107,7 @@ if defined noetw set configure_flags=%configure_flags% --without-etw& set noetw_
 if defined noperfctr set configure_flags=%configure_flags% --without-perfctr& set noperfctr_msi_arg=/p:NoPerfCtr=1
 if defined release_urlbase set configure_flags=%configure_flags% --release-urlbase=%release_urlbase%
 if defined download_arg set configure_flags=%configure_flags% %download_arg%
+if defined dll set configure_flags=%configure_flags% --shared
 
 if "%i18n_arg%"=="full-icu" set configure_flags=%configure_flags% --with-intl=full-icu
 if "%i18n_arg%"=="small-icu" set configure_flags=%configure_flags% --with-intl=small-icu