[CLANG] Inconsistent NEON intrinsics compilation between NDK clang and standalone clang for Android aarch64

[mccakit]

Inconsistent NEON intrinsics compilation between NDK clang and standalone clang for Android aarch64

When building the same Android aarch64 project, NDK’s bundled clang compiles successfully, but the same version of standalone clang (built from llvm-project) fails with a NEON intrinsics error coming from #include <arm_neon.h>, even though the compile commands and flags are identical. This suggests a discrepancy in how NEON builtins are handled between the NDK clang toolchain and a self-built clang with the same target.

---

Steps to Reproduce

0.Patch CMake

Cmake overrides current compiler when system name is set to android, this patch fixes that and will soon be merged upstream

diff --git a/Modules/Platform/Android-Determine-C.cmake b/Modules/Platform/Android-Determine-C.cmake
index c7d1d1512c..1d93cd724b 100644
--- a/Modules/Platform/Android-Determine-C.cmake
+++ b/Modules/Platform/Android-Determine-C.cmake
@@ -1,2 +1,5 @@
+if(CMAKE_C_COMPILER)
+  return()
+endif()
 include(Platform/Android/Determine-Compiler)
 __android_determine_compiler(C)
diff --git a/Modules/Platform/Android-Determine-CXX.cmake b/Modules/Platform/Android-Determine-CXX.cmake
index 3a3de880a4..e7d96beae2 100644
--- a/Modules/Platform/Android-Determine-CXX.cmake
+++ b/Modules/Platform/Android-Determine-CXX.cmake
@@ -1,2 +1,5 @@
+if(CMAKE_CXX_COMPILER)
+  return()
+endif()
 include(Platform/Android/Determine-Compiler)
 __android_determine_compiler(CXX)

1. Clone the repro project:
   git clone https://github.com/mccakit/cross_compile_fun
   cd cross_compile_fun

2. Configure and build using standalone clang:
   cmake -B build_0 -G Ninja -DCMAKE_TOOLCHAIN_FILE=toolchains/android-arm64.cmake
   cmake --build build_0

   This uses a custom toolchain file pointing to a locally built clang (/home/mccakit/dev/llvm/bin/clang) and NDK sysroot.

3. Observe the error:

[20/77] Building C object extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o
FAILED: [code=1] extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o
/home/mccakit/dev/llvm/bin/clang --target=aarch64-none-linux-android35 -DBUILD_SDL -DDLL_EXPORT -DPLUTOSVG_BUILD_STATIC -DPLUTOSVG_HAS_FREETYPE -DPLUTOVG_BUILD_STATIC -DSDL_BUILD_MAJOR_VERSION=3 -DSDL_BUILD_MICRO_VERSION=0 -DSDL_BUILD_MINOR_VERSION=3 -DTTF_USE_HARFBUZZ=1 -DTTF_USE_PLUTOSVG=1 -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/include -I/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl3/include-revision -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl3/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/harfbuzz/src -I/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl_ttf/external/freetype-build/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/freetype/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutosvg/source -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutovg/include -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fexceptions -O3 -DNDEBUG -std=gnu23 -fPIC -fvisibility=hidden --sysroot=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/sysroot -resource-dir=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/20 -w -Wall -Wextra -pthread -MD -MT extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o -MF extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o.d -o extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o -c /home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c
In file included from /home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c:128:
/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/20/include/arm_neon.h:1919:24: error: incompatible constant for this __builtin_neon function
 1919 |   __ret = (uint16x8_t) __builtin_neon_vceqzq_f16((int8x16_t)__p0, 49);
      |                        ^                                          ~~

4. Now configure and build using NDK’s own clang:
   cmake -B build_1 -G Ninja -DCMAKE_TOOLCHAIN_FILE=toolchains/android-arm64-ndk.cmake
   cmake --build build_1

   This uses the NDK-provided clang binary from
   $NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/clang.

   This build succeeds.

---

Key Observation

compile_commands.json for the failing and succeeding builds are identical:

{ "directory": "/home/mccakit/desktop/projects/cross_compile_fun/build_0", "command": "/home/mccakit/dev/llvm/bin/clang --target=aarch64-none-linux-android35 -DBUILD_SDL -DDLL_EXPORT -DPLUTOSVG_BUILD_STATIC -DPLUTOSVG_HAS_FREETYPE -DPLUTOVG_BUILD_STATIC -DSDL_BUILD_MAJOR_VERSION=3 -DSDL_BUILD_MICRO_VERSION=0 -DSDL_BUILD_MINOR_VERSION=3 -DTTF_USE_HARFBUZZ=1 -DTTF_USE_PLUTOSVG=1 -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/include -I/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl3/include-revision -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl3/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/harfbuzz/src -I/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl_ttf/external/freetype-build/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/freetype/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutosvg/source -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutovg/include -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fexceptions -O3 -DNDEBUG -std=gnu23 -fPIC -fvisibility=hidden --sysroot=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/sysroot -resource-dir=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/20 -w -Wall -Wextra -pthread -o extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o -c /home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c", "file": "/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c", "output": "/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o" }

{ "directory": "/home/mccakit/desktop/projects/cross_compile_fun/build_1", "command": "/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android35 -DBUILD_SDL -DDLL_EXPORT -DPLUTOSVG_BUILD_STATIC -DPLUTOSVG_HAS_FREETYPE -DPLUTOVG_BUILD_STATIC -DSDL_BUILD_MAJOR_VERSION=3 -DSDL_BUILD_MICRO_VERSION=0 -DSDL_BUILD_MINOR_VERSION=3 -DTTF_USE_HARFBUZZ=1 -DTTF_USE_PLUTOSVG=1 -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/include -I/home/mccakit/desktop/projects/cross_compile_fun/build_1/extern/sdl3/include-revision -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl3/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/harfbuzz/src -I/home/mccakit/desktop/projects/cross_compile_fun/build_1/extern/sdl_ttf/external/freetype-build/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/freetype/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutosvg/source -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutovg/include -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fexceptions -O3 -DNDEBUG -std=gnu23 -fPIC -fvisibility=hidden -Wall -Wextra -pthread -o extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o -c /home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c", "file": "/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c", "output": "/home/mccakit/desktop/projects/cross_compile_fun/build_1/extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o" }

Only the compiler binary differs:

• Failing: /home/mccakit/dev/llvm/bin/clang
• Working: $NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/clang

---

Environment

• Host: Linux Mint 22.2, X64
• NDK version: r29.0.13599879
• Clang version: 22
• Target: aarch64-none-linux-android35

---

Expected Behavior

Standalone clang with the same flags and sysroot should compile successfully, just like NDK clang.

---

Actual Behavior

Standalone clang fails with:

error: incompatible constant for this __builtin_neon function
at arm_neon.h:1919.

[llvmbot]

@llvm/issue-subscribers-backend-aarch64

Author: mccakit (mccakit)

# Inconsistent NEON intrinsics compilation between NDK clang and standalone clang for Android aarch64

When building the same Android aarch64 project, NDK’s bundled clang compiles successfully, but the same version of standalone clang (built from llvm-project) fails with a NEON intrinsics error coming from #include <arm_neon.h>, even though the compile commands and flags are identical. This suggests a discrepancy in how NEON builtins are handled between the NDK clang toolchain and a self-built clang with the same target.

---

Steps to Reproduce

0.Patch CMake

Cmake overrides current compiler when system name is set to android, this patch fixes that and will soon be merged upstream

diff --git a/Modules/Platform/Android-Determine-C.cmake b/Modules/Platform/Android-Determine-C.cmake
index c7d1d1512c..1d93cd724b 100644
--- a/Modules/Platform/Android-Determine-C.cmake
+++ b/Modules/Platform/Android-Determine-C.cmake
@@ -1,2 +1,5 @@
+if(CMAKE_C_COMPILER)
+  return()
+endif()
 include(Platform/Android/Determine-Compiler)
 __android_determine_compiler(C)
diff --git a/Modules/Platform/Android-Determine-CXX.cmake b/Modules/Platform/Android-Determine-CXX.cmake
index 3a3de880a4..e7d96beae2 100644
--- a/Modules/Platform/Android-Determine-CXX.cmake
+++ b/Modules/Platform/Android-Determine-CXX.cmake
@@ -1,2 +1,5 @@
+if(CMAKE_CXX_COMPILER)
+  return()
+endif()
 include(Platform/Android/Determine-Compiler)
 __android_determine_compiler(CXX)

1. Clone the repro project:
   git clone https://github.com/mccakit/cross_compile_fun
   cd cross_compile_fun

2. Configure and build using standalone clang:
   cmake -B build_0 -G Ninja -DCMAKE_TOOLCHAIN_FILE=toolchains/android-arm64.cmake
   cmake --build build_0

   This uses a custom toolchain file pointing to a locally built clang (/home/mccakit/dev/llvm/bin/clang) and NDK sysroot.

3. Observe the error:

[20/77] Building C object extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o
FAILED: [code=1] extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o
/home/mccakit/dev/llvm/bin/clang --target=aarch64-none-linux-android35 -DBUILD_SDL -DDLL_EXPORT -DPLUTOSVG_BUILD_STATIC -DPLUTOSVG_HAS_FREETYPE -DPLUTOVG_BUILD_STATIC -DSDL_BUILD_MAJOR_VERSION=3 -DSDL_BUILD_MICRO_VERSION=0 -DSDL_BUILD_MINOR_VERSION=3 -DTTF_USE_HARFBUZZ=1 -DTTF_USE_PLUTOSVG=1 -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/include -I/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl3/include-revision -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl3/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/harfbuzz/src -I/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl_ttf/external/freetype-build/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/freetype/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutosvg/source -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutovg/include -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fexceptions -O3 -DNDEBUG -std=gnu23 -fPIC -fvisibility=hidden --sysroot=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/sysroot -resource-dir=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/20 -w -Wall -Wextra -pthread -MD -MT extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o -MF extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o.d -o extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o -c /home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c
In file included from /home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c:128:
/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/20/include/arm_neon.h:1919:24: error: incompatible constant for this __builtin_neon function
 1919 |   __ret = (uint16x8_t) __builtin_neon_vceqzq_f16((int8x16_t)__p0, 49);
      |                        ^                                          ~~

4. Now configure and build using NDK’s own clang:
   cmake -B build_1 -G Ninja -DCMAKE_TOOLCHAIN_FILE=toolchains/android-arm64-ndk.cmake
   cmake --build build_1

   This uses the NDK-provided clang binary from
   $NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/clang.

   This build succeeds.

---

Key Observation

compile_commands.json for the failing and succeeding builds are identical:

{ "directory": "/home/mccakit/desktop/projects/cross_compile_fun/build_0", "command": "/home/mccakit/dev/llvm/bin/clang --target=aarch64-none-linux-android35 -DBUILD_SDL -DDLL_EXPORT -DPLUTOSVG_BUILD_STATIC -DPLUTOSVG_HAS_FREETYPE -DPLUTOVG_BUILD_STATIC -DSDL_BUILD_MAJOR_VERSION=3 -DSDL_BUILD_MICRO_VERSION=0 -DSDL_BUILD_MINOR_VERSION=3 -DTTF_USE_HARFBUZZ=1 -DTTF_USE_PLUTOSVG=1 -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/include -I/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl3/include-revision -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl3/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/harfbuzz/src -I/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl_ttf/external/freetype-build/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/freetype/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutosvg/source -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutovg/include -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fexceptions -O3 -DNDEBUG -std=gnu23 -fPIC -fvisibility=hidden --sysroot=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/sysroot -resource-dir=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/20 -w -Wall -Wextra -pthread -o extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o -c /home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c", "file": "/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c", "output": "/home/mccakit/desktop/projects/cross_compile_fun/build_0/extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o" }

{ "directory": "/home/mccakit/desktop/projects/cross_compile_fun/build_1", "command": "/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=aarch64-none-linux-android35 -DBUILD_SDL -DDLL_EXPORT -DPLUTOSVG_BUILD_STATIC -DPLUTOSVG_HAS_FREETYPE -DPLUTOVG_BUILD_STATIC -DSDL_BUILD_MAJOR_VERSION=3 -DSDL_BUILD_MICRO_VERSION=0 -DSDL_BUILD_MINOR_VERSION=3 -DTTF_USE_HARFBUZZ=1 -DTTF_USE_PLUTOSVG=1 -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/include -I/home/mccakit/desktop/projects/cross_compile_fun/build_1/extern/sdl3/include-revision -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl3/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/harfbuzz/src -I/home/mccakit/desktop/projects/cross_compile_fun/build_1/extern/sdl_ttf/external/freetype-build/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/freetype/include -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutosvg/source -I/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/external/plutovg/include -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security -fexceptions -O3 -DNDEBUG -std=gnu23 -fPIC -fvisibility=hidden -Wall -Wextra -pthread -o extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o -c /home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c", "file": "/home/mccakit/desktop/projects/cross_compile_fun/extern/sdl_ttf/src/SDL_ttf.c", "output": "/home/mccakit/desktop/projects/cross_compile_fun/build_1/extern/sdl_ttf/CMakeFiles/SDL3_ttf-shared.dir/src/SDL_ttf.c.o" }

Only the compiler binary differs:

• Failing: /home/mccakit/dev/llvm/bin/clang
• Working: $NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/clang

---

Environment

• Host: Linux Mint 22.2, X64
• NDK version: r29.0.13599879
• Clang version: 22
• Target: aarch64-none-linux-android35

---

Expected Behavior

Standalone clang with the same flags and sysroot should compile successfully, just like NDK clang.

---

Actual Behavior

Standalone clang fails with:

error: incompatible constant for this __builtin_neon function
at arm_neon.h:1919.

[davemgreen]

Hello. You need to make sure that the arm_neon.h that you compile with is the one from the compiler that you are using. It is probably being overridden by -resource-dir=/home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/20.

arm_neon.h and the compiler are tightly coupled and need to use the same versions.

[mccakit]

I see — so do I have to compile compiler-rt and point my compiler to it somehow? How would I do that? The problem is that when I remove the -resource-dir flag, my compiler looks for directories like /home/mccakit/dev/llvm/lib/clang/22/lib/aarch64-none-linux-android35 which don’t exist. I only have /home/mccakit/dev/llvm/lib/clang/22/lib/x86_64-unknown-linux-gnu. This feels weird because I’ve had no issues cross-compiling to other architectures, like macOS ARM from my x64 machine.

[davemgreen]

compiler-rt shouldn't be necessary, these are generated in a normal compiler build. It probably needs to use the arm_neon.h from /home/mccakit/dev/llvm/lib/clang/22/include/ before it tries the files in /home/mccakit/dev/android-clt/ndk/29.0.13599879/toolchains/llvm/prebuilt/linux-x86_64/lib/clang/20 (if those are still needed).

[mccakit]

This doesn't solve my problem, in fact adding /home/mccakit/dev/llvm/lib/clang/22/include as an include dir which contains arm_neon.h makes the project fail at configure time, because cmake can't find pthreads for some reason after adding this include dir.

What can I do?
Rebuild LLVM with different compiler-rt settings?
I can't manually build compiler-rt for some reason

[mccakit]

So, I was able to fix it by building compiler rt builtins only, then creating a symlink to get rid of arch prefix in the name, then creating a symlink folder of my llvm installation, rest is just copy pasting libraries to gradle directory