BUG : Compiling opcache extensions statically into ZTS PHP , JIT bug

[jingjingxyk]

Compile target ： Statically compiled PHP enable Zend Thread Safe and opcache extension

environment :

OS: alpine
OS-Version: 3.19
CPU ARCH : x86_64

The following code:

docker run --rm -ti --init -w /work alpine:3.18 

apk update
apk add vim alpine-sdk xz autoconf automake linux-headers clang-dev clang lld libtool cmake bison re2c gettext coreutils 
apk add bash p7zip zip unzip flex pkgconf ca-certificates 
apk add wget git curl 
apk add vim 

vi build-static-php.sh

#!/usr/bin/env bash

__DIR__=$(cd "$(dirname "$0")"; pwd)

set -uex

PHP_VERSION=8.2.21

test -f php-${PHP_VERSION}.tar.gz || curl -fSLo php-${PHP_VERSION}.tar.gz https://github.com/php/php-src/archive/refs/tags/php-${PHP_VERSION}.tar.gz
test -d php-src && rm -rf php-src
mkdir -p php-src
tar --strip-components=1 -C php-src -xf php-${PHP_VERSION}.tar.gz


export CC=clang
export CXX=clang++
export LD=ld.lld

cd php-src

bash ${__DIR__}/opcache-static-compile-patch.sh

./buildconf --force

./configure \
 --disable-all \
 --disable-cgi \
 --enable-shared=no \
 --enable-static=yes \
 --enable-cli \
 --enable-zts \
 --disable-phpdbg \
 --without-valgrind \
 --enable-opcache

sed -i.backup 's/-export-dynamic/-all-static/g' Makefile

make -j $(nproc)

file sapi/cli/php
readelf -h sapi/cli/php

sapi/cli/php -m
sapi/cli/php -v

vi opcache-static-compile-patch.sh

#!/usr/bin/env bash

if [ ! -f ext/opcache/config.m4 ] ; then
 echo 'php extension opcache folder no found '
 exit 3
fi

cat > ext/opcache/php_opcache.h <<PHP_OPCACHE_H_EOF
#include "php.h"

extern zend_module_entry opcache_module_entry;
#define phpext_opcache_ptr &opcache_module_entry

PHP_OPCACHE_H_EOF


sed -i.backup 's/ext_shared=yes/ext_shared=no/g' ext/opcache/config.m4
sed -i.backup 's/shared,,/\$ext_shared,,/g' ext/opcache/config.m4

sed -i.backup 's/\/\* start Zend extensions \*\//\/\* start Zend extensions \*\/\n#ifdef PHP_ENABLE_OPCACHE\n\textern zend_extension zend_extension_entry;\n\tzend_register_extension(\&zend_extension_entry, NULL);\n#endif/g' main/main.c


cat >> sapi/cli/php_cli.c <<PHP_CLI_OPCACHE_EOF

zend_module_entry opcache_module_entry = {
 STANDARD_MODULE_HEADER_EX,
 NULL,
 NULL,
 "opcache",
 NULL,
 NULL,
 NULL,
 NULL,
 NULL,
 NULL,
 PHP_VERSION,
 STANDARD_MODULE_PROPERTIES
};

PHP_CLI_OPCACHE_EOF

test -f main/main.c.backup && rm -f main/main.c.backup
test -f ext/opcache/config.m4.backup && rm -f ext/opcache/config.m4.backup

Compile PHP into Static Binary

bash build-static-php.sh

Resulted in this output:

/usr/bin/ld: ext/opcache/jit/zend_jit.o: TLS transition from R_X86_64_TLSGD to R_X86_64_GOTTPOFF against `_tsrm_ls_cache' at 0x12c9a in section `.text' failed
/usr/bin/ld: failed to set dynamic section sizes: bad value
clang-16: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:261: sapi/cli/php] Error 1

PHP Version

8.2.21

Operating System

alpine 3.18

[jingjingxyk]

script source code : jingjingxyk/swoole-cli@9215808

https://github.com/jingjingxyk/swoole-cli/tree/build_native_php/sapi/tools
https://github.com/swoole/build-static-php/tree/main/sapi/tools

[cmb69]

Well, there might be reason why "OPcache can only be compiled as a shared extension" according to the documentation.

Anyhow, did that work with previous versions of PHP 8.2?

[jingjingxyk]

Test PHP version list

PHP_VERSION=8.2.21
PHP_VERSION=8.3.9
PHP_VERSION=8.1.29
PHP_VERSION=8.0.30

They have similar compilation errors

/usr/bin/ld: ext/opcache/jit/zend_jit.o: TLS transition from R_X86_64_TLSGD to R_X86_64_GOTTPOFF against `_tsrm_ls_cache' at 0x12fc3 in section `.text' failed
/usr/bin/ld: failed to set dynamic section sizes: bad value
clang-16: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:259: sapi/cli/php] Error 1

[cmb69]

Thank you! So this is actually a feature request (to be able to compile OPcache statically), but not a report about a regression.

[jingjingxyk]

If PHP does not enable ZTS, opcache extension static compilation can be successfully compiled

https://github.com/jingjingxyk/swoole-cli/actions/runs/10062434474/