[SOLVED] How do I build an older version of V8?

How do I build an older version of V8?

I tried to build an older version of V8 for android. Target version is 6.5 https://v8.dev/blog/v8-release-65

Building guide is here: https://v8.dev/docs/build

git clone https://github.com/v8/v8
cd v8

git checkout 6.5-lkgr

build/install-build-deps-android.sh

echo "target_os = ['android']" >> ../.gclient && gclient sync

After the above steps, I see below settings in v8/src/include/v8-version.h

define V8_MAJOR_VERSION 7
define V8_MINOR_VERSION 3
define V8_BUILD_NUMBER 0
define V8_PATCH_LEVEL 0

This is strange to me. Because this guide does the same steps but it succeeded.

Solution

The guide you linked to also uses fetch v8 instead of manually cloning from GitHub, which performs important initialization ;-)

If you insist on not following the recommended instructions, you'll have to set up your .gclient manually. For this specific issue, I guess it lacks "managed": False,. But I'd really recommend to follow the given instructions to avoid such issues.