Refactor AC_INIT in configure.ac and PHP versions

Since Autoconf 2.53 the AC_INIT call with only a single argument has
been made obsolete and now includes several other optional arguments to
make installation experience a bit better by providing program version
and links to the project in the `./configure -h` output.

Author: petk

README.RELEASE_PROCESS

@@ -65,7 +65,7 @@ credits files in ext/standard.
 
 4. Checkout the release branch for this release (e.g., PHP-5.4.2) from the main branch.
 
-5. Bump the version numbers in ``main/php_version.h``, ``Zend/zend.h``, ``configure.ac`` and possibly ``NEWS``.
+5. Bump the version numbers in ``main/php_version.h``, ``Zend/zend.h``, ``configure.ac``, ``scripts/phpize.m4`` and possibly ``NEWS``.
 Do not use abbreviations for alpha and beta. Do not use dashes, you should
 ``#define PHP_VERSION "5.4.22RC1"`` and not ``#define PHP_VERSION "5.4.22-RC1"``
 
@@ -79,7 +79,7 @@ Do not use abbreviations for alpha and beta. Do not use dashes, you should
 9. Tag the repository release branch with the version, e.g.:
 ``git tag -u YOURKEYID php-5.4.2RC2``
 
-10. Bump the version numbers in ``main/php_version.h``, ``Zend/zend.h``, ``configure.ac`` and ``NEWS``
+10. Bump the version numbers in ``main/php_version.h``, ``Zend/zend.h``, ``configure.ac``, ``scripts/phpize.m4`` and ``NEWS``
 in the *main* branch (PHP-5.4 for example) to prepare for the **next** version.
 F.e. if the RC is "5.4.1RC1" then the new one should be "5.4.2-dev" - regardless if we get
 a new RC or not. This is to make sure ``version_compare()`` can correctly work.
@@ -162,7 +162,7 @@ Rolling a stable release
 ------------------------
 
 1. Checkout your release branch, you should have created when releasing previous RC
-and bump the version numbers in ``main/php_version.h``, ``Zend/zend.h``, ``configure.ac`` and possibly ``NEWS``.
+and bump the version numbers in ``main/php_version.h``, ``Zend/zend.h``, ``configure.ac``, ``scripts/phpize.m4`` and possibly ``NEWS``.
 
 2. If a CVE commit needs to be merged to the release, then have it committed to
 the base branches and merged upwards as usual (f.e commit the CVE fix to 5.3,
@@ -336,7 +336,7 @@ Forking a new release branch
 
 2. Just prior to cutting X.Y.0beta1, create the new branch locally.
    Add a commit on master after the branch point clearing the NEWS, UPGRADING
-   and UPGRADING.INTERNALS files, updating the version in configure.ac (run
+   and UPGRADING.INTERNALS files, updating the version in configure.ac and scripts/phpize.m4 (run
    ./configure to automatically update main/php_versions.h, too) and Zend/zend.h.
    Also list the new branch in README.GIT-RULES.
      Example: http://git.php.net/?p=php-src.git;a=commit;h=a63c99b

buildconf

@@ -9,9 +9,9 @@ debug=0
 # Go to project root.
 cd $(CDPATH= cd -- "$(dirname -- "$0")" && pwd -P)
 
-eval $(grep '^PHP_EXTRA_VERSION=' configure.ac)
-case "$PHP_EXTRA_VERSION" in
-  *-dev)
+php_extra_version=$(grep '^AC_INIT(\[' configure.ac)
+case "$php_extra_version" in
+  *-dev*)
     dev=1
     ;;
   *)

configure.ac

@@ -8,7 +8,8 @@ dnl Basic autoconf initialization, generation of config.nice.
 dnl -------------------------------------------------------------------------
 
 AC_PREREQ([2.68])
-AC_INIT(README.GIT-RULES)
+AC_INIT([PHP], [7.4.0-dev], [https://bugs.php.net], [php], [https://php.net])
+AC_CONFIG_SRCDIR([main/php_version.h])
 AC_CONFIG_AUX_DIR([build])
 AC_PRESERVE_HELP_ORDER
 
@@ -99,11 +100,15 @@ extern "C++" {
 #endif /* PHP_CONFIG_H */
 ])
 
-PHP_MAJOR_VERSION=7
-PHP_MINOR_VERSION=4
-PHP_RELEASE_VERSION=0
-PHP_EXTRA_VERSION="-dev"
-PHP_VERSION="$PHP_MAJOR_VERSION.$PHP_MINOR_VERSION.$PHP_RELEASE_VERSION$PHP_EXTRA_VERSION"
+PHP_VERSION=AC_PACKAGE_VERSION
+php_tmp_version=$(echo $PHP_VERSION | $SED 's/\([[0-9\.]]*\)\(.*\)/\1\.\2/')
+ac_IFS=$IFS; IFS="."
+set $php_tmp_version
+IFS=$ac_IFS
+PHP_MAJOR_VERSION=[$]1
+PHP_MINOR_VERSION=[$]2
+PHP_RELEASE_VERSION=[$]3
+PHP_EXTRA_VERSION=[$]4
 PHP_VERSION_ID=`expr [$]PHP_MAJOR_VERSION \* 10000 + [$]PHP_MINOR_VERSION \* 100 + [$]PHP_RELEASE_VERSION`
 
 dnl Allow version values to be used in Makefile

scripts/phpize.m4

@@ -1,7 +1,8 @@
 dnl This file becomes configure.ac for self-contained extensions.
 
 AC_PREREQ([2.68])
-AC_INIT(config.m4)
+AC_INIT([PHP], [7.4.0-dev], [https://bugs.php.net], [php], [https://php.net])
+AC_CONFIG_SRCDIR([config.m4])
 AC_CONFIG_AUX_DIR([build])
 AC_PRESERVE_HELP_ORDER