[Bug]: lipo -info Crashes when Given any Static Library Compiled for Android

[GuyEP-Modulate]

Description

Steps to Reproduce

Run llvm-lipo with the following library, which was compiled for Android.
libopus.android.zip

Expected Results

The architecture of the library will be printed.

Actual Results

Lipo fails:

$ /Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo -info libopus.a
Non-fat file: libopus.a is architecture: PLEASE submit a bug report to https://github.com/android-ndk/ndk/issues and include the crash backtrace.
Stack dump:
0.	Program arguments: /Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo -info libopus.a
 #0 0x000000010481c590 (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x1001c4590)
 #1 0x000000010481af18 (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x1001c2f18)
 #2 0x000000010481cecc (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x1001c4ecc)
 #3 0x0000000190b44184 (/usr/lib/system/libsystem_platform.dylib+0x180484184)
 #4 0x00000001047b6164 (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x10015e164)
 #5 0x0000000104660fc4 (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x100008fc4)
 #6 0x0000000104661720 (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x100009720)
 #7 0x000000010465f138 (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x100007138)
 #8 0x000000010465e65c (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x10000665c)
 #9 0x0000000104665754 (/Users/guy/Library/Android/sdk/ndk/28.0.12674087/toolchains/llvm/prebuilt/darwin-x86_64/bin/llvm-lipo+0x10000d754)
#10 0x000000019078c274
Segmentation fault: 11

Upstream bug

No response

Commit to cherry-pick

No response

I am using a supported NDK

• I have checked and the NDK I'm using is currently supported

Affected versions

r27, r28

Host OS

Mac

Host OS version

15.1.1

Affected ABIs

arm64-v8a

[DanAlbert]

@pirama-arumuga-nainar idk what llvm-lipo is. Is that something we support, or something that was shipped by accident?

[enh-google]

it's only useful for Apple's mach-o "universal" binaries (formerly called "fat" binaries, hence the "lipo" pun).

probably shouldn't crash on ELF binaries though!

[DanAlbert]

Ah, yeah, so not useful for the NDK and probably a thing we should just remove to save space.

[pirama-arumuga-nainar]

Correct, llvm-lipo can only handle macho binaries.

[pirama-arumuga-nainar]

@Sharjeel-Khan has r.android.com/3445363 to remove llvm-lipo from Linux and Windows prebuilts. However, we need it in Darwin prebuilts for bootstrapping new toolchains. @DanAlbert you can remove the Darwin llvm-lipo during NDK packaging.

[DanAlbert]

@DanAlbert you can remove the Darwin llvm-lipo during NDK packaging.

That was my plan. Will do that for r29 (will probably ignore it for r28).