php-ext.com / event (from dev using PHP 8.0.5-buster)

Dockerfile
FROM php:8.0.5-buster
WORKDIR /tmp
RUN apt update && \
    apt install -y --no-install-recommends git subversion autoconf build-essential && \
    apt install -y --no-install-recommends libevent-dev libssl-dev && \
    rm -rf /var/lib/apt/lists/*
RUN git clone --recursive --depth=1 https://bitbucket.org/osmanov/pecl-event /tmp/ext-src && \
    cd /tmp/ext-src && \
    phpize && \
    ./configure --with-event-core && \
    make && \
    make test
Build output FAIL 11ss
Step 1/4 : FROM php:8.0.5-buster
---> 9d3d64fb1730
Step 2/4 : WORKDIR /tmp
---> Running in 62fc5f1fc65b
Removing intermediate container 62fc5f1fc65b
---> 33043a45e456
Step 3/4 : RUN apt update && apt install -y --no-install-recommends git subversion autoconf build-essential && apt install -y --no-install-recommends libevent-dev libssl-dev && rm -rf /var/lib/apt/lists/*
---> Running in f8314475dfab


WARNING: apt does not have a stable CLI interface. Use with caution in scripts.


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Reading package lists...
Building dependency tree...
Reading state information...
2 packages can be upgraded. Run 'apt list --upgradable' to see them.


WARNING: 
apt
 
does not have a stable CLI interface. 
Use with caution in scripts.




Reading package lists...
Building dependency tree...
Reading state information...
autoconf is already the newest version (2.69-11).
The following package was automatically installed and is no longer required:
lsb-base
Use 'apt autoremove' to remove it.
The following additional packages will be installed:
git-man libapr1 libaprutil1 libcurl3-gnutls liberror-perl libexpat1
libpcre2-8-0 libserf-1-1 libsvn1 libutf8proc2
Suggested packages:
gettext-base git-daemon-run | git-daemon-sysvinit git-doc git-el git-email
git-gui gitk gitweb git-cvs git-mediawiki git-svn db5.3-util
libapache2-mod-svn subversion-tools
Recommended packages:
less ssh-client
The following NEW packages will be installed:
build-essential git git-man libapr1 libaprutil1 libcurl3-gnutls
liberror-perl libexpat1 libpcre2-8-0 libserf-1-1 libsvn1 libutf8proc2
subversion
0 upgraded, 13 newly installed, 0 to remove and 2 not upgraded.
Need to get 10.7 MB of archives.
After this operation, 50.2 MB of additional disk space will be used.
Get:1 http://security.debian.org/debian-security buster/updates/main amd64 libcurl3-gnutls amd64 7.64.0-4+deb10u2 [330 kB]
Get:2 http://deb.debian.org/debian buster/main amd64 build-essential amd64 12.6 [7576 B]
Get:3 http://deb.debian.org/debian buster/main amd64 libexpat1 amd64 2.2.6-2+deb10u1 [106 kB]
Get:4 http://deb.debian.org/debian buster/main amd64 libpcre2-8-0 amd64 10.32-5 [213 kB]
Get:5 http://deb.debian.org/debian buster/main amd64 liberror-perl all 0.17027-2 [30.9 kB]
Get:6 http://deb.debian.org/debian buster/main amd64 git-man all 1:2.20.1-2+deb10u3 [1620 kB]
Get:7 http://deb.debian.org/debian buster/main amd64 git amd64 1:2.20.1-2+deb10u3 [5633 kB]
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Get:12 http://deb.debian.org/debian buster/main amd64 libsvn1 amd64 1.10.4-1+deb10u2 [1403 kB]
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12690 files and directories currently installed.)
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Setting up git (1:2.20.1-2+deb10u3) ...
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Processing triggers for libc-bin (2.28-10) ...


WARNING: 
apt
 
does not have a stable CLI interface. 
Use with caution in scripts.




Reading package lists...
Building dependency tree...
Reading state information...
The following package was automatically installed and is no longer required:
lsb-base
Use 'apt autoremove' to remove it.
The following additional packages will be installed:
libevent-2.1-6 libevent-core-2.1-6 libevent-extra-2.1-6
libevent-openssl-2.1-6 libevent-pthreads-2.1-6
Suggested packages:
libssl-doc
The following NEW packages will be installed:
libevent-2.1-6 libevent-core-2.1-6 libevent-dev libevent-extra-2.1-6
libevent-openssl-2.1-6 libevent-pthreads-2.1-6 libssl-dev
0 upgraded, 7 newly installed, 0 to remove and 2 not upgraded.
Need to get 2607 kB of archives.
After this operation, 10.9 MB of additional disk space will be used.
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Get:2 http://deb.debian.org/debian buster/main amd64 libevent-2.1-6 amd64 2.1.8-stable-4 [177 kB]
Get:3 http://deb.debian.org/debian buster/main amd64 libevent-core-2.1-6 amd64 2.1.8-stable-4 [129 kB]
Get:4 http://deb.debian.org/debian buster/main amd64 libevent-extra-2.1-6 amd64 2.1.8-stable-4 [100 kB]
Get:5 http://deb.debian.org/debian buster/main amd64 libevent-pthreads-2.1-6 amd64 2.1.8-stable-4 [47.9 kB]
Get:6 http://deb.debian.org/debian buster/main amd64 libevent-openssl-2.1-6 amd64 2.1.8-stable-4 [54.4 kB]
Get:7 http://deb.debian.org/debian buster/main amd64 libevent-dev amd64 2.1.8-stable-4 [304 kB]
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13812 files and directories currently installed.)
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Processing triggers for libc-bin (2.28-10) ...
Removing intermediate container f8314475dfab
---> 6520e818f602
Step 4/4 : RUN git clone --recursive --depth=1 https://bitbucket.org/osmanov/pecl-event /tmp/ext-src && cd /tmp/ext-src && phpize && ./configure --with-event-core && make && make test
---> Running in 4257606a9260
Cloning into '/tmp/ext-src'...

Configuring for:
PHP Api Version:         20200930
Zend Module Api No:      20200930
Zend Extension Api No:   420200930
checking for grep that handles long lines and -e...
/bin/grep
checking for egrep...
/bin/grep -E
checking for a sed that does not truncate output...
/bin/sed
checking for pkg-config...
/usr/bin/pkg-config
checking pkg-config is at least version 0.9.0...
yes
checking for cc...
cc
checking whether the C compiler works...
yes
checking for C compiler default output file name...
a.out
checking for suffix of executables...
checking whether we are cross compiling...
no
checking for suffix of object files...
o
checking whether we are using the GNU C compiler...
yes
checking whether cc accepts -g...
yes
checking for cc option to accept ISO C89...
none needed
checking how to run the C preprocessor...
cc -E
checking for icc...
no
checking for suncc...
no
checking for system library directory...
lib
checking if compiler supports -R...
no
checking if compiler supports -Wl,-rpath,...
yes
checking build system type...
x86_64-pc-linux-gnu
checking host system type...
x86_64-pc-linux-gnu
checking target system type...
x86_64-pc-linux-gnu
checking for PHP prefix...
/usr/local
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
checking for PHP extension directory...
/usr/local/lib/php/extensions/no-debug-non-zts-20200930
checking for PHP installed headers prefix...
/usr/local/include/php
checking if debug is enabled...
no
checking if zts is enabled...
no
checking for gawk...
no
checking for nawk...
nawk
checking if nawk is broken...
no
checking for Event core support...
yes, shared
checking for Event thread safety support...
no
checking for Event extra functionality support...
yes
checking for OpenSSL support in Event...
yes
checking for custom PHP namespace in Event...
no
checking for OpenSSL installation prefix...
no
checking whether Event debugging support enabled...
no
checking whether to enable sockets support in Event...
yes
checking PHP version...
PHP 8.x
checking for include/event2/event.h...
found in /usr
checking for libevent version...
ok
checking for event_free in -levent_core...
yes
checking for evdns_base_free in -levent_extra...
yes
checking for openssl >= 1.0.1...
yes
checking for bufferevent_openssl_get_ssl in -levent_openssl...
yes
checking for ANSI C header files...
yes
checking for sys/types.h...
yes
checking for sys/stat.h...
yes
checking for stdlib.h...
yes
checking for string.h...
yes
checking for memory.h...
yes
checking for strings.h...
yes
checking for inttypes.h...
yes
checking for stdint.h...
yes
checking for unistd.h...
yes
checking /usr/local/include/php/ext/sockets/php_sockets.h usability...
no
checking /usr/local/include/php/ext/sockets/php_sockets.h presence...
no
checking for /usr/local/include/php/ext/sockets/php_sockets.h...
no
configure: error: Couldn't find /usr/local/include/php/sockets/php_sockets.h. Please check if sockets extension installed