Utility for Android ELF files to remove unused parts that the linker warns about.
When loading ELF files, the Android linker warns about unsupported dynamic section entries with warnings such as:
WARNING: linker: /data/data/org.kost.nmap.android.networkmapper/bin/nmap: unused DT entry: type 0x6ffffffe arg 0x8a7d4
WARNING: linker: /data/data/org.kost.nmap.android.networkmapper/bin/nmap: unused DT entry: type 0x6fffffff arg 0x3
This utility strips away the following dynamic section entries:
DT_RPATH- not supported in any Android version.DT_GNU_HASH- supported from Android 6.0.DT_RUNPATH- supported from Android 7.0.DT_VERDEF- supported from Android 6.0.DT_VERDEFNUM- supported from Android 6.0.DT_VERNEED- supported from Android 6.0.DT_VERNEEDNUM- supported from Android 6.0.DT_VERSYM- supported from Android 6.0.DT_AARCH64_BTI_PLT- supported from Android 12.DT_AARCH64_PAC_PLT- supported from Android 12.DT_AARCH64_VARIANT_PCS- supported from Android 12.
It also removes the three ELF sections of type:
SHT_GNU_verdefSHT_GNU_verneedSHT_GNU_versym
And makes sure that the alignment of a TLS segment is at least 32 (for 32bit arches) or 64 (for 64bit arches), to prevent errors similar to:
error: "valgrind": executable's TLS segment is underaligned: alignment is 8, needs to be at least 64 for ARM64 Bionic
Usage: termux-elf-cleaner [OPTION-OR-FILENAME]...
Processes ELF files to remove unsupported section types and
dynamic section entries which the Android linker warns about.
Options:
--api-level NN choose target api level, i.e. 21, 24, ..
--dry-run print info but but do not remove entries
--quiet do not print info about removed entries
--help display this help and exit
--version output version information and exit
SPDX-License-Identifier: GPL-3.0-or-later