Error on building Opcache JIT for Windows ARM64

[macintoshplus]

Description

When I try to build the version 8.0.4RC4 on Windows 11 with ARM64 processors, I have this error.

The build work if I add the —disable-opcache-jit.

Resulted in this output:

zend_jit.obj : error LNK2019: unresolved external symbol __readgsqword referenced in function zend_jit_setup
C:\Users\builder\AppData\Local\Temp\994b80f3-d8b1-427d-9ba3-a7bb4df75943\config\vs17\arm64\obj\Release_TS\php_opcache.dll : fatal error LNK1120: 1 unresolved externals

PHP Version

PHP 8.4.0RC4

Operating System

Windows 11 ARM64

[nielsdos]

Right, this makes sense because the gs register is x86(-64) specific. In fact, I don't think that the JIT works for Windows+ARM64, so it should probably be disabled by the configure script.

[cmb69]

I agree that we should --disable-opcache-jit for Windows ARM64 builds (for now).

And when cross-compiling, if you don't use /WX (same as -Werror), you hit:

        C:\php-sdk\phpdev\vs17\arm64\php-src\arm64\Release_TS\\gen_ir_fold_hash.exe < ext\opcache\jit\ir\ir_fold.h > ext\opcache\jit\ir\ir_fold_hash.h
Die Version von C:\php-sdk\phpdev\vs17\arm64\php-src\arm64\Release_TS\gen_ir_fold_hash.exe ist mit der ausgeführten Windows-Version nicht kompatibel. Überprüfen Sie die Systeminformationen des Computers, und wenden Sie sich anschließend an den Herausgeber der Software.

(cf. #15610 (comment))

[cmb69]

Right, this makes sense because the gs register is x86(-64) specific. In fact, I don't think that the JIT works for Windows+ARM64, […]

There is aarch64 support for POSIX systems, but I believe this is still different to what would be needed for Windows ARM64. Plus, cross-compilation may pose more difficult issues than with an autotools build-chain. And from what I can tell, we do not yet support native compilation on Windows ARM64 (although Visual Studio 17.4 is supposed to support that).