php-config --version returns an empty string

[dunglas]

Since recently, the php-config --version utility returns an empty string. It used to return the "human readable" PHP version.
The php-config --vernum flag works properly.

This affects PHP 8.3 as well as PHP 8.4. This doesn't look like an upstream bug because php-config --version works as expected in the official Docker image.

See also php/frankenphp#1199

[dunglas]

I investigated a bit:

Version is set to an empty string in buildroot/bin/php-config:

version=""

This is the root of the problem.

The generated version in configure and in php_version.h are good:

ac_IFS=$IFS; IFS="."
set $(echo 8.4.1 | "${SED}" 's/\([0-9\.]*\)\(.*\)/\1\.\2/')
IFS=$ac_IFS
PHP_MAJOR_VERSION=$1
PHP_MINOR_VERSION=$2
PHP_RELEASE_VERSION=$3
if ${PHP_EXTRA_VERSION:+false} :
then :
  PHP_EXTRA_VERSION=$4
fi
PHP_VERSION="$PHP_MAJOR_VERSION.$PHP_MINOR_VERSION.$PHP_RELEASE_VERSION$PHP_EXTRA_VERSION"
PHP_VERSION_ID=$(expr $PHP_MAJOR_VERSION \* 10000 + $PHP_MINOR_VERSION \* 100 + $PHP_RELEASE_VERSION)

#define PHP_VERSION "8.4.1"
#define PHP_VERSION_ID 80401

php-config seems to be generated from scripts/php-config.in, which contains:

version="@PHP_VERSION@"

It's this replacement that seems to be faulty, but I didn't have the time to track down why.

[dunglas]

Ok, this comes from the config.status file, which contains an empty PHP_VERSION variable with SPC (but not for other builds):

S["PHP_VERSION"]=""

[crazywhalecc]

Seems some extension makes php version disappear. I tried to compile only several extensions and it's good.

For fastest tests, we may need to make an matrix, or only run configure and stop compiling for debugging.

[crazywhalecc]

This may be due to the config.m4 of the parallel extension:

• https://github.com/crazywhalecc/static-php-cli/actions/runs/12176414345?pr=569
• https://github.com/krakjoe/parallel/blob/853798dffbbd78e394588c271ec7df9997e0476a/config.m4#L17