opcache can no longer be enabled or built sind 8.5 Alpha4

[tlamy]

I'm using Gitlab-CI to automatically build base images with all needed extensions for our projects.

Since 8.5alpha4 this always fails, where before a simple docker-php-ext-enable opcache used to work:

FROM docker.io/library/php:8.5-rc-fpm-bullseye@sha256:6aa46210534f80d2f49a147283fb5b8ba8091630c2a9355b21723e55df844074

...

#16 [extbuilder  3/24] RUN docker-php-ext-enable opcache || docker-php-ext-install opcache
#16 0.567 error: 'opcache' does not exist
#16 0.567 
#16 0.567 usage: /usr/local/bin/docker-php-ext-enable [options] module-name [module-name ...]
#16 0.567    ie: /usr/local/bin/docker-php-ext-enable gd mysqli
#16 0.567        /usr/local/bin/docker-php-ext-enable pdo pdo_mysql
#16 0.567        /usr/local/bin/docker-php-ext-enable --ini-name 0-apc.ini apcu apc
#16 0.567 
#16 0.567 Possible values for module-name:
#16 0.572 sodium.so
#16 0.572 
#16 0.572 Some of the above modules are already compiled into PHP; please check
#16 0.572 the output of "php -i" to see which modules are already loaded.
#16 3.519 Configuring for:
#16 3.519 PHP Version:             8.5
#16 3.519 PHP Api Version:         20240925
#16 3.519 Zend Module Api No:      20240925
#16 3.519 Zend Extension Api No:   420240925
#16 4.589 checking for grep that handles long lines and -e... /bin/grep
#16 4.593 checking for egrep... /bin/grep -E
#16 4.596 checking for a sed that does not truncate output... /bin/sed
#16 4.669 checking build system type... x86_64-pc-linux-gnu
#16 4.681 checking host system type... x86_64-pc-linux-gnu
#16 4.681 checking target system type... x86_64-pc-linux-gnu
#16 4.742 shtool:echo:Warning: unable to determine terminal sequence for bold mode
#16 4.823 shtool:echo:Warning: unable to determine terminal sequence for bold mode
#16 4.847 checking for gawk... no
#16 4.848 checking for nawk... nawk
#16 4.848 checking if nawk is broken... no
#16 4.853 checking for pkg-config... /usr/bin/pkg-config
#16 4.854 checking pkg-config is at least version 0.9.0... yes
#16 4.857 checking for cc... cc
#16 4.901 checking whether the C compiler works... yes
#16 4.968 checking for C compiler default output file name... a.out
#16 4.970 checking for suffix of executables... 
#16 5.034 checking whether we are cross compiling... no
#16 5.102 checking for suffix of object files... o
#16 5.146 checking whether we are using the GNU C compiler... yes
#16 5.185 checking whether cc accepts -g... yes
#16 5.222 checking for cc option to accept ISO C89... none needed
#16 5.276 checking how to run the C preprocessor... cc -E
#16 5.373 checking for icc... no
#16 5.389 checking for suncc... no
#16 5.406 checking for system library directory... lib
#16 5.406 checking if compiler supports -Wl,-rpath,... yes
#16 5.506 checking for PHP prefix... /usr/local
#16 5.506 checking for PHP includes... -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib
#16 5.506 checking for PHP extension directory... /usr/local/lib/php/extensions/no-debug-non-zts-20240925
#16 5.506 checking for PHP installed headers prefix... /usr/local/include/php
#16 5.507 checking if debugging is enabled... no
#16 5.533 checking if PHP is built with thread safety (ZTS)... no
#16 5.561 
#16 5.561 Configuring extension
#16 5.561 checking whether to enable copying PHP CODE pages into HUGE PAGES... yes
#16 5.561 checking whether to enable JIT... yes
#16 5.561 checking whether to support opcache JIT disassembly through Capstone... no
#16 5.568 checking for mprotect... yes
#16 5.643 checking for shm_create_largepage... no
#16 5.725 checking for sysvipc shared memory support... yes
#16 5.820 checking for mmap() using MAP_ANON shared memory support... yes
#16 5.906 checking for library containing shm_open... -lrt
#16 6.051 checking for mmap() using shm_open() shared memory support... yes
#16 6.226 
#16 6.226 Configuring libtool
#16 6.226 checking for a sed that does not truncate output... /bin/sed
#16 6.233 checking for ld used by cc... /usr/bin/ld
#16 6.243 checking if the linker (/usr/bin/ld) is GNU ld... yes
#16 6.249 checking for /usr/bin/ld option to reload object files... -r
#16 6.249 checking for BSD-compatible nm... /usr/bin/nm -B
#16 6.254 checking whether ln -s works... yes
#16 6.254 checking how to recognize dependent libraries... pass_all
#16 6.287 checking for ANSI C header files... yes
#16 6.474 checking for sys/types.h... yes
#16 6.527 checking for sys/stat.h... yes
#16 6.590 checking for stdlib.h... yes
#16 6.653 checking for string.h... yes
#16 6.718 checking for memory.h... yes
#16 6.774 checking for strings.h... yes
#16 6.826 checking for inttypes.h... yes
#16 6.889 checking for stdint.h... yes
#16 6.953 checking for unistd.h... yes
#16 7.011 checking dlfcn.h usability... yes
#16 7.063 checking dlfcn.h presence... yes
#16 7.084 checking for dlfcn.h... yes
#16 7.087 checking the maximum length of command line arguments... 1572864
#16 7.096 checking command to parse /usr/bin/nm -B output from cc object... ok
#16 7.220 checking for objdir... .libs
#16 7.226 checking for ar... ar
#16 7.227 checking for ranlib... ranlib
#16 7.228 checking for strip... strip
#16 7.328 checking if cc supports -fno-rtti -fno-exceptions... no
#16 7.376 checking for cc option to produce PIC... -fPIC
#16 7.377 checking if cc PIC flag -fPIC works... yes
#16 7.421 checking if cc static flag -static works... yes
#16 7.538 checking if cc supports -c -o file.o... yes
#16 7.591 checking whether the cc linker (/usr/bin/ld -m elf_x86_64) supports shared libraries... yes
#16 7.620 checking whether -lc should be explicitly linked in... no
#16 7.673 checking dynamic linker characteristics... GNU/Linux ld.so
#16 7.702 checking how to hardcode library paths into programs... immediate
#16 7.702 checking whether stripping libraries is possible... yes
#16 7.708 checking if libtool supports shared libraries... yes
#16 7.708 checking whether to build shared libraries... yes
#16 7.709 checking whether to build static libraries... no
#16 8.032 
#16 8.032 creating libtool
#16 8.071 appending configuration tag "CXX" to libtool
#16 8.086 
#16 8.086 Generating files
#16 8.128 configure: creating build directories
#16 8.160 configure: creating Makefile
#16 8.166 configure: patching config.h.in
#16 8.172 configure: creating ./config.status
#16 8.258 config.status: creating config.h
#16 8.342 
#16 8.345 Build complete.
#16 8.348 Don't forget to run 'make test'.
#16 8.350 
#16 8.420 Installing shared extensions:     /usr/local/lib/php/extensions/no-debug-non-zts-20240925/
#16 8.467 cp: cannot stat 'modules/*': No such file or directory
#16 8.468 make: *** [Makefile:89: install-modules] Error 1
#16 ERROR: process "/bin/sh -c docker-php-ext-enable opcache || docker-php-ext-install opcache" did not complete successfully: exit code: 2

[jnoordsij]

As of #1587 opcache should be enabled by default already in all official image builds, so you should be able to remove any manual enabling on your end.

This follows an upstream change that enables opcache by default on PHP >= 8.5 (see https://wiki.php.net/rfc/make_opcache_required) which also makes it unable to be manually enabled for these images (see #1604).