fix iOS CI.
The simple fixes in !277 (merged) that seem to fix the current CI errors.
commit 4b88fb41
bootstrap: codesign all build-tools on macos
Reduces the amount of IPC macos performs due to checking of certificates
et al.
commit 8ef66301
config/android: place our build directory before the toolchain's
We will be providing overriden libraries (mostly newer) that should be
used over the toolchain libraries.
commit 5d664e61
config: don't ever overwrite LDFLAGS completely
commit f24f006c
recipes: fix some dependencies
commit 0514d153
build: move unset_toolchain_env to ModifyEnvBase
The base Build type does not have the necessary env structures required
to handle being called without being a subclass of ModifyEnvBase.
commit b71a10ef
build: always restore the environment in async_modify_environment
Otherwise the retry options on failure would not work