build: Add the exe wrapper for emscripten

cerbero/bootstrap/bootstrapper.py

@@ -86,10 +86,11 @@ def __new__(klass, config, system, toolchains, build_tools, offline, assume_yes)
         return bs
 
 
-from cerbero.bootstrap import linux, windows, android, osx, ios  # noqa: E402
+from cerbero.bootstrap import linux, windows, android, osx, ios, emscripten  # noqa: E402
 
 linux.register_all()
 windows.register_all()
 android.register_all()
 osx.register_all()
 ios.register_all()
+emscripten.register_all()

cerbero/bootstrap/emscripten.py

@@ -0,0 +1,64 @@
+# cerbero - a multi-platform build system for Open Source software
+# Copyright (C) 2024 Fluendo S.A <support@fluendo.com>
+#   Authors: Maxim Dementyev <mdementyev@fluendo.com>
+#            Andoni Morales <amorales@fluendo.com>
+#            Jorge Zapata <jzapata@fluendo.com>
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Library General Public License for more details.
+#
+# You should have received a copy of the GNU Library General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+from cerbero.bootstrap import BootstrapperBase
+from cerbero.bootstrap.bootstrapper import register_toolchain_bootstrapper
+from cerbero.enums import Distro
+from cerbero.utils import messages as m
+from cerbero.utils import shell
+import os.path
+import shutil
+
+EMSDK_VERSION = '4.0.6'
+EMSDK_BUNDLE_EXT = '.tar.gz'
+EMSDK_BASE_URL = 'https://github.com/emscripten-core/emsdk/archive/refs/tags/%s' + EMSDK_BUNDLE_EXT
+EMSDK_CHECKSUMS = {'4.0.6' + EMSDK_BUNDLE_EXT: '2d3292d508b4f5477f490b080b38a34aaefed43e85258a1de72cb8dde3f8f3af'}
+
+
+class EmscriptenToolchainBootstrapper(BootstrapperBase):
+    """
+    Bootstrapper for Emscripten builds.
+    Installs the Emscripten SDK
+    """
+
+    def __init__(self, config, offline, assume_yes):
+        super().__init__(config, offline, 'emscripten')
+        url = EMSDK_BASE_URL % (EMSDK_VERSION)
+        bundle_name = 'emsdk-' + EMSDK_VERSION + EMSDK_BUNDLE_EXT
+        urls = (url, bundle_name, EMSDK_CHECKSUMS[os.path.basename(url)])
+        self.fetch_urls.append(urls)
+        self.extract_steps.append((url, True, self.config.home_dir))
+
+    async def start(self, jobs=0):
+        sdk_path_after_extract = os.path.join(self.config.home_dir, 'emsdk-' + EMSDK_VERSION)
+        shutil.rmtree(self.config.toolchain_prefix)  # to be sure it's rename and not a move
+        shutil.move(sdk_path_after_extract, self.config.toolchain_prefix)
+        m.message(f'Install Emscripten SDK {EMSDK_VERSION}...')
+        await shell.async_call_output(
+            ['./emsdk', 'install', EMSDK_VERSION], cmd_dir=self.config.toolchain_prefix, cpu_bound=False
+        )
+        m.message('Activate Emscripten SDK...')
+        await shell.async_call_output(
+            ['./emsdk', 'activate', EMSDK_VERSION], cmd_dir=self.config.toolchain_prefix, cpu_bound=False
+        )
+
+
+def register_all():
+    register_toolchain_bootstrapper(Distro.EMSCRIPTEN, EmscriptenToolchainBootstrapper)