How to run FFI extension modules (.so files) made by Golang? #21
Description
I can't make the FFI (Foreign Function Interface) work.
$ docker run --rm -it test:local php /app/sample.php
Fatal error: Uncaught FFI\Exception: Failed loading '/usr/local/lib/php/extensions/no-debug-non-zts-20200804/libutil.so' in /app/sample.php:6
Stack trace:
#0 /app/sample.php(6): FFI::cdef('void print(char...', '/usr/local/lib/...')
#1 {main}
thrown in /app/sample.php on line 6- Go source code
- sample.php
<?php
$util = FFI::cdef(
"void print(char* p0);
int sum(int p0, int p1);",
"/usr/local/lib/php/extensions/no-debug-non-zts-20200804/libutil.so"
);
$util->print(
(string) $util->sum(2, 4)
);- Dockerfile (Multi-state-build)
FROM golang:alpine AS builder
RUN \
apk --no-cache add \
git \
gcc \
musl-dev \
&& git clone https://github.com/eislambey/php-ffi-go-example.git /go/src
RUN \
cd /go/src && \
GOOS=linux go build -o libutil.so -buildmode=c-shared util.go
FROM keinos/php8-jit:latest
USER root
COPY sample.php /app/sample.php
COPY --from=builder /go/src/libutil.h /usr/local/lib/php/extensions/no-debug-non-zts-20200804/libutil.h
COPY --from=builder /go/src/libutil.so /usr/local/lib/php/extensions/no-debug-non-zts-20200804/libutil.so
RUN \
apk --no-cache add \
libffi-dev \
# needs for "stddef.h"
gcc \
# requirement for ld-musl-x86_64.so.1
musl-dev \
&& chmod 0755 /usr/local/lib/php/extensions/no-debug-non-zts-20200804/libutil.*- Result of
php -i
$ docker run --rm test:local php -i | grep ffi
Configure Command => './configure' '--build=x86_64-linux-musl' '--with-config-file-path=/usr/local/etc/php' '--with-config-file-scan-dir=/usr/local/etc/php/conf.d' '--enable-option-checking=fatal' '--with-mhash' '--enable-ftp' '--enable-mbstring' '--enable-mysqlnd' '--with-password-argon2' '--with-sodium=shared' '--with-pdo-sqlite=/usr' '--with-sqlite3=/usr' '--with-openssl=/usr' '--with-system-ciphers' '--with-ffi' '--enable-gd' '--with-external-gd' '--with-webp' '--with-jpeg' '--with-xpm' '--with-freetype' '--with-curl' '--with-libedit' '--with-zlib' '--with-pear' '--enable-soap' '--enable-pcntl' '--enable-opcache' '--enable-sockets' 'build_alias=x86_64-linux-musl' 'CPPFLAGS='
ffi.enable => preload => preload
ffi.preload => no value => no value- PHP Extension dir
$ docker run --rm test:local php -i | grep extension_dir
extension_dir => /usr/local/lib/php/extensions/no-debug-non-zts-20200804 => /usr/local/lib/php/extensions/no-debug-non-zts-20200804
sqlite3.extension_dir => no value => no value