Module _03_integrate_with_pecl

Help

Expand description

§Integrate with PECL

As can be seen from the quick start example, using phper to develop a PHP extension doesn’t require the phpize and make processes, as you would when developing with C/C++.

However, if you intend to publish the extension on PECL (the official repository of PHP extensions), you will need to integrate the phper project with phpize and make since the PECL install command will call them.

This chapter will guide you on how to integrate the phper project with pecl and phpize.

§Steps

§Adapt to `phpize`

At first, imagine you have finished the hello project follow write your first extension, can build the php extension .so file successfully.

And then, create the config.m4 file using by phpize (In theory, config.w32 is also required for compatibility with Windows, but now phper don’t support Windows).

PHP_ARG_ENABLE([hello],
  [whether to enable hello support],
  [AS_HELP_STRING([--enable-hello],
    [Enable hello support])],
  [no])

dnl If not enable, `cargo build` run with argument `--release`.
PHP_ARG_ENABLE([cargo_debug], [whether to enable cargo debug mode],
[  --enable-cargo-debug           Enable cargo debug], no, no)

if test "$PHP_hello" != "no"; then
  dnl Check cargo command exists or not.
  AC_PATH_PROG(CARGO, cargo, no)
  if ! test -x "$CARGO"; then
    AC_MSG_ERROR([cargo command missing, please reinstall the cargo distribution])
  fi

  AC_DEFINE(HAVE_hello, 1, [ Have hello support ])

  PHP_NEW_EXTENSION(hello, [ ], $ext_shared)

  CARGO_MODE_FLAGS="--release"
  CARGO_MODE_DIR="release"

  if test "$PHP_CARGO_DEBUG" != "no"; then
    CARGO_MODE_FLAGS=""
    CARGO_MODE_DIR="debug"
  fi

  cat >>Makefile.objects<< EOF
all: cargo_build

clean: cargo_clean

cargo_build:
    # Build the extension file
	PHP_CONFIG=$PHP_PHP_CONFIG cargo build $CARGO_MODE_FLAGS

    # Copy the extension file from target dir to modules
	if [[ -f ./target/$CARGO_MODE_DIR/libhello.dylib ]] ; then \\
		cp ./target/$CARGO_MODE_DIR/libhello.dylib ./modules/hello.so ; fi
	if [[ -f ./target/$CARGO_MODE_DIR/libhello.so ]] ; then \\
		cp ./target/$CARGO_MODE_DIR/libhello.so ./modules/hello.so ; fi

cargo_clean:
	cargo clean

.PHONY: cargo_build cargo_clean
EOF

  dnl Symbolic link the files for `cargo build`
  AC_CONFIG_LINKS([ \
    Cargo.lock:Cargo.lock \
    Cargo.toml:Cargo.toml \
    build.rs:build.rs \
    src:src \
    ])
fi

Here we add the configure option --enable-cargo-debug, whether to enable cargo debug mode.

I think this isn’t the best way of writing, because I am not very familiar with the syntax of autoconf, but it can work, if you have a better way of writing, welcome to PR. :-)

Don’t forget to add the .gitignore, because phpize and ./configure will generate too much temporary files.

hello-*.tgz
*.lo
*.la
.libs
acinclude.m4
aclocal.m4
autom4te.cache
build
config.guess
config.h
config.h.in
config.h.in~
config.log
config.nice
config.status
config.sub
configure
configure.ac
configure.in
include
install-sh
libtool
ltmain.sh
Makefile
Makefile.fragments
Makefile.global
Makefile.objects
missing
mkinstalldirs
modules
php_test_results_*.txt
phpt.*
run-test-info.php
run-tests.php
tests/**/*.diff
tests/**/*.out
tests/**/*.exp
tests/**/*.log
tests/**/*.db
tests/**/*.mem
tmp-php.ini

Now phpize is ready to run, let’s try!

phpize
./configure --enable-cargo-debug
make
make install

Alright, the hello extension will be installed in php extension directory.

§Adapt to PECL

To integrate with PECL, we have to create the package.xml file.

 <?xml version="1.0"?>
 
 <package version="2.0" 
 	xmlns="http://pear.php.net/dtd/package-2.0" 
 	xmlns:tasks="http://pear.php.net/dtd/tasks-1.0" 
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://pear.php.net/dtd/tasks-1.0 http://pear.php.net/dtd/tasks-1.0.xsd http://pear.php.net/dtd/package-2.0 http://pear.php.net/dtd/package-2.0.xsd">
 	<name>hello</name>
 	<channel>pecl.php.net</channel>
 	<summary>Hello world example.</summary>
 	<description>The Hello world example of phper.</description>
 	<lead>
 		<name>jmjoy</name>
 		<user>jmjoy</user>
 		<email>jmjoy@apache.org</email>
 		<active>yes</active>
 	</lead>
 	<date>1970-01-01</date>
 	<version>
 		<release>0.0.0</release>
 		<api>0.0.0</api>
 	</version>
 	<stability>
 		<release>stable</release>
 		<api>stable</api>
 	</stability>
 	<license uri="http://license.coscl.org.cn/MulanPSL2/">MulanPSL-2.0</license>
 	<notes>        Release notes.	</notes>
 	<contents>
 		<dir name="/">
 			<file name="Cargo.lock" role="src" />
 			<file name="Cargo.toml" role="src" />
 			<file name="README.md" role="doc" />
 			<file name="build.rs" role="src" />
 			<file name="config.m4" role="src" />
 			<file name="src/lib.rs" role="src" />
 		</dir>
 	</contents>
 	<dependencies>
 		<required>
 			<php>
 				<min>7.2.0</min>
 			</php>
 			<pearinstaller>
 				<min>1.4.0</min>
 			</pearinstaller>
 		</required>
 	</dependencies>
 	<providesextension>hello</providesextension>
 	<extsrcrelease>
 		<configureoption default="no" name="enable-cargo-debug" prompt="enable cargo debug?" />
 	</extsrcrelease>
 </package>

*The example hello in phper github repository not run pecl well, because it’s the sub crate of phper, not a separate project.

All is OK, try to build the pecl package and install it.

pecl package
pecl install hello-*.tgz

We will receive output like this at the end if the whole is successful.

configuration option "php_ini" is not set to php.ini location
You should add "extension=hello.so" to php.ini

Module _03_integrate_with_peclCopy item path

§Integrate with PECL

§Steps

§Adapt to phpize

§Adapt to PECL

Module _03_integrate_with_pecl

§Adapt to `phpize`