Unlike the NDK clang, the on-device clang has already been patched to add an rpath
to the Termux-prefixed library path, so only have the build script add the rpath
flag for NDK builds.
Variables
TERMUX_PKG_PLATFORM_INDEPENDENT
TERMUX_DEBUG
TERMUX_PKG_HAS_DEBUG
TERMUX_PKG_ESSENTIAL
TERMUX_SUBPKG_ESSENTIAL
TERMUX_PKG_NO_STATICSPLIT
TERMUX_PKG_BUILD_IN_SRC
TERMUX_PKG_FORCE_CMAKE
TERMUX_PKG_HOSTBUILD
should not accept arbitrary values for marking them "enabled". Instead
they should accept boolean values which makes them easier to handle and
also makes their meaning clear.
build-package.sh should make decision based on variable's value but not on
whether it is set or empty.
%ci:no-build
Partial compatibility for on-device builds.
There is no guarantee that it will be possible to build all available
packages and built packages will have same reliability that cross-compiled
but should solve "self-hosting" problems as much as possible.
As clang++ in the NDK defaults to libc++ since r17, we no longer
need to fake a libstdc++.so at build time (and omit it from the
libc++ package we ship).