lbry-android-sdk/p4a/pythonforandroid/recipes/librt/__init__.py

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from os import makedirs, remove
from os.path import exists, join
import sh
from pythonforandroid.recipe import Recipe
from pythonforandroid.logger import shprint
class LibRt(Recipe):
'''
This is a dumb recipe. We may need this because some recipes inserted some
flags `-lrt` without our control, case of:
- :class:`~pythonforandroid.recipes.gevent.GeventRecipe`
- :class:`~pythonforandroid.recipes.lxml.LXMLRecipe`
.. note:: the librt doesn't exist in android but it is integrated into
libc, so we create a symbolic link which we will remove when our build
finishes'''
@property
def libc_path(self):
return join(self.ctx.ndk_platform, 'usr', 'lib', 'libc')
def build_arch(self, arch):
# Create a temporary folder to add to link path with a fake librt.so:
fake_librt_temp_folder = join(
self.get_build_dir(arch.arch),
"p4a-librt-recipe-tempdir"
)
if not exists(fake_librt_temp_folder):
makedirs(fake_librt_temp_folder)
# Set symlinks, and make sure to update them on every build run:
if exists(join(fake_librt_temp_folder, "librt.so")):
remove(join(fake_librt_temp_folder, "librt.so"))
shprint(sh.ln, '-sf',
self.libc_path + '.so',
join(fake_librt_temp_folder, "librt.so"),
)
if exists(join(fake_librt_temp_folder, "librt.a")):
remove(join(fake_librt_temp_folder, "librt.a"))
shprint(sh.ln, '-sf',
self.libc_path + '.a',
join(fake_librt_temp_folder, "librt.a"),
)
# Add folder as -L link option for all recipes if not done yet:
if fake_librt_temp_folder not in arch.extra_global_link_paths:
arch.extra_global_link_paths.append(
fake_librt_temp_folder
)
recipe = LibRt()