What is the correct way to cross-compile for aarch64-linux-gnu with Clang?

[Doekin]

I'm seeking guidance on cross-compiling for aarch64-linux-gnu using Clang.

Working methods:

• With GCC: xmake f -c -p cross --cross=aarch64-linux-gnu-
• With Zig: xmake f -c -p cross --cross=aarch64-linux-gnu --toolchain=zig

Attempted with Clang (not working):

xmake f -c -p cross --cross=aarch64-linux-gnu --toolchain=clang
xmake f -c -p cross --cross=aarch64-linux-gnu- --toolchain=clang

I can successfully compile directly with Clang using:

clang --target=aarch64-linux-gnu --sysroot=/usr/aarch64-linux-gnu -fuse-ld=lld src/hello.c

Could someone kindly advise on the correct configuration for Clang cross-compilation to aarch64-linux-gnu?

[waruqi]

--cross=aarch64-linux-gnu-

it will call aarch64-linux-gnu-gccfor gcc, unless you rename clang to aarch64-linux-gnu-clang

if use -target for cross-compilation, it's not supported for clang now. you can open a pr to improve it.

xmake/xmake/toolchains/clang/load.lua

Lines 67 to 88 in 8ed7230

	if toolchain:is_plat("windows") then
	target = target .. "-windows-msvc"
	-- add vs environments
	local expect_vars = {"PATH", "LIB", "INCLUDE", "LIBPATH"}
	local curenvs = os.getenvs()
	for _, name in ipairs(expect_vars) do
	_add_vsenv(toolchain, name, curenvs)
	end
	for _, name in ipairs(find_vstudio.get_vcvars()) do
	if not table.contains(expect_vars, name:upper()) then
	_add_vsenv(toolchain, name, curenvs)
	end
	end
	if is_host("linux") then
	toolchain:add("ldflags", "-fuse-ld=lld-link" .. suffix)
	toolchain:add("shflags", "-fuse-ld=lld-link" .. suffix)
	end
	elseif toolchain:is_plat("mingw") then
	target = target .. "-w64-windows-gnu"
	end

[Doekin]

Got it, thanks for the clarification