Update travis build instructions for using gn to build.

Tested on a linux machine, maybe it'll work this time.

symlink.sh

@@ -20,7 +20,7 @@ if [[ ! -d "${V8_DIR}/include" ]]; then
     exit 1
 fi
 
-V8_LIBS="out.gn/x64.release/obj"
+V8_LIBS="out.gn/golib/obj"
 
 if [[ ! -d "${V8_DIR}/${V8_LIBS}" ]]; then
     echo "ERROR: ${V8_DIR}/${V8_LIBS} directory does not exist." >&2

travis-install-linux.sh

@@ -12,13 +12,30 @@ mkdir -p ${CHROMIUM_DIR}
 pushd ${CHROMIUM_DIR}
 git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
 export PATH="$(pwd)/depot_tools:$PATH"
-gclient
 fetch v8
 cd v8
 git checkout ${V8_VERSION}
 gclient sync
-tools/dev/v8gen.py x64.release -- v8_use_external_startup_data=false v8_enable_i18n_support=false v8_enable_gdbjit=false v8_static_library=true is_component_build=false
-ninja -C out.gn/x64.release v8_libbase v8_libplatform v8_base v8_snapshot
+gn gen out.gn/golib --args='
+    target_cpu = "x64"
+    is_debug = false
+
+    symbol_level = 0
+    strip_debug_info = true
+    v8_experimental_extra_library_files = []
+    v8_extra_library_files = []
+
+    v8_static_library = true
+    is_component_build = false
+    use_custom_libcxx = false
+    use_custom_libcxx_for_host = false
+
+    icu_use_data_file = false
+    is_desktop_linux = false
+    v8_enable_i18n_support = false
+    v8_use_external_startup_data = false
+    v8_enable_gdbjit = false'
+ninja -C out.gn/golib v8_libbase v8_libplatform v8_base v8_nosnapshot v8_libsampler v8_init v8_initializers
 popd
 ./symlink.sh ${CHROMIUM_DIR}/v8
 go install .

v8.go

@@ -12,7 +12,7 @@ package v8
 // #include <string.h>
 // #include "v8_c_bridge.h"
 // #cgo CXXFLAGS: -I${SRCDIR} -I${SRCDIR}/include -std=c++11
-// #cgo LDFLAGS: -L${SRCDIR}/libv8 -lv8_base -lv8_libbase -lv8_snapshot -lv8_libplatform -ldl -pthread
+// #cgo LDFLAGS: -pthread -L${SRCDIR}/libv8 -lv8_base -lv8_init -lv8_initializers -lv8_libbase -lv8_libplatform -lv8_libsampler -lv8_nosnapshot
 import "C"
 
 import (

v8_create.go

@@ -15,7 +15,7 @@ import (
 // #include <string.h>
 // #include "v8_c_bridge.h"
 // #cgo CXXFLAGS: -I${SRCDIR} -I${SRCDIR}/include -std=c++11
-// #cgo LDFLAGS: -L${SRCDIR}/libv8 -lv8_base -lv8_libbase -lv8_snapshot -lv8_libsampler -lv8_libplatform -ldl -pthread
+// #cgo LDFLAGS: -pthread -L${SRCDIR}/libv8 -lv8_base -lv8_init -lv8_initializers -lv8_libbase -lv8_libplatform -lv8_libsampler -lv8_nosnapshot
 import "C"
 
 var float64Type = reflect.TypeOf(float64(0))