Linux x86主机交叉编译Arm64 Wayland遇Meson词法错误求助

First, let's address the critical issues in your setup:

1. Fix Cross-Configuration File Errors #

Your cross-file has two major mistakes that are causing build failures:

a. Incorrect Host Machine Architecture #

You're targeting Arm64 (aarch64) but set host_machine to x86_64. This tells Meson to build for the host architecture instead of the target. Correct the [host_machine] section:

[host_machine]
system = 'linux'
cpu_family = 'aarch64'
cpu = 'aarch64'
endian = 'little'

b. Wrong Size/Alignment Values for Arm64 #

Arm64 is a 64-bit architecture, so sizeof_void* should be 8, not 4. Update the [properties] section to match Arm64 specs:

[properties]
sizeof_int = 4
sizeof_wchar_t = 4
sizeof_void* = 8

alignment_char = 1
alignment_void* = 8
alignment_double = 8

You can remove has_function_printf—Meson can detect this automatically without hardcoding.

2. Upgrade Meson to a Newer Version #

Your Meson version (0.45.1) is extremely outdated (released in 2018). Wayland's meson.build file uses syntax that newer Meson versions support, and old versions may throw lexer errors when parsing modern Meson constructs.

Upgrade Meson using pip (recommended):

pip3 install --upgrade meson

Or use your distribution's package manager if a recent version is available. Aim for at least Meson 0.60.0 or later, as it has better cross-compilation support for Arm64.

3. Verify Toolchain Installation #

Ensure your aarch64-linux-gnu toolchain is fully installed. On Debian/Ubuntu-based systems, install it with:

sudo apt install gcc-aarch64-linux-gnu g++-aarch64-linux-gnu

4. Re-Run Meson Setup #

After applying the above fixes, clean your existing build directory and re-run the setup:

rm -rf build-nxp
meson setup --cross-file meson_cross_compile.txt build-nxp

Why This Works #

• Correcting the host machine architecture ensures Meson uses the right target checks for Arm64.
• Fixing size/alignment values prevents incorrect compiler flag generation and feature detection.
• Upgrading Meson resolves lexer errors caused by outdated syntax support, allowing it to parse Wayland's meson.build correctly.

内容的提问来源于stack exchange，提问作者AbelianMemes