Add a clang-specific cross-compilation toolchain for AArch64.
A separate toolchain is needed as we cannot simply set CMAKE_C_COMPILER
to clang - it requires specifying the target triple using the --target
flag.
---
build/aarch64-linux-clang/crosscompile.cmake | 26 ++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 build/aarch64-linux-clang/crosscompile.cmake
diff --git a/build/aarch64-linux-clang/crosscompile.cmake
b/build/aarch64-linux-clang/crosscompile.cmake
new file mode 100644
index 000000000..c0fb8a3cd
--- /dev/null
+++ b/build/aarch64-linux-clang/crosscompile.cmake
@@ -0,0 +1,26 @@
+# CMake toolchain file for cross compiling x265 for AArch64, using Clang.
+
+set(CROSS_COMPILE_ARM64 1)
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR aarch64)
+
+set(TARGET_TRIPLE aarch64-linux-gnu)
+
+# specify the cross compiler (giving precedence to user-supplied CC/CXX)
+if(NOT DEFINED CMAKE_C_COMPILER)
+ set(CMAKE_C_COMPILER clang)
+endif()
+if(NOT DEFINED CMAKE_CXX_COMPILER)
+ set(CMAKE_CXX_COMPILER clang++)
+endif()
+
+# specify compiler target
+set(CMAKE_C_COMPILER_TARGET ${TARGET_TRIPLE})
+set(CMAKE_CXX_COMPILER_TARGET ${TARGET_TRIPLE})
+
+# specify assembler target
+list(APPEND ASM_FLAGS "--target=${TARGET_TRIPLE}")
+
+# specify the target environment
+SET(CMAKE_FIND_ROOT_PATH /usr/aarch64-linux-gnu)
+
--
2.42.1
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