From: Joe Orton <jorton@apache.org>
Date: Thu, 18 Dec 2025 09:54:28 +0000 (+0000)
Subject: * acinclude.m4 (APACHE_CHECK_SYSTEMD): Define AP_SYSTEMD_VERSION if
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6859a96df8897ed98743b53d05dda11c8c512c13;p=thirdparty%2Fapache%2Fhttpd.git

* acinclude.m4 (APACHE_CHECK_SYSTEMD): Define AP_SYSTEMD_VERSION if
  the version of libsystemd is available from pkg-config.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1930703 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/acinclude.m4 b/acinclude.m4
index c40cbd2304..98d7c9831e 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -819,11 +819,14 @@ AC_DEFUN([APACHE_CHECK_SYSTEMD], [
 dnl Check for systemd support for listen.c's socket activation.
 case $host in
 *-linux-*)
-   if test -n "$PKGCONFIG" && $PKGCONFIG --exists libsystemd; then
-      SYSTEMD_LIBS=`$PKGCONFIG --libs libsystemd`
-   elif test -n "$PKGCONFIG" && $PKGCONFIG --exists libsystemd-daemon; then
-      SYSTEMD_LIBS=`$PKGCONFIG --libs libsystemd-daemon`
-   else
+   for libsd in libsystemd libsystemd-daemon; do
+      if test -n "$PKGCONFIG" && $PKGCONFIG --exists $libsd; then
+         SYSTEMD_LIBS=`$PKGCONFIG --libs $libsd`
+         SYSTEMD_VERS=`$PKGCONFIG --modversion $libsd`
+         break
+      fi
+   done
+   if test -n "$SYSTEMD_LIBS"; then
       AC_CHECK_LIB(systemd-daemon, sd_notify, SYSTEMD_LIBS="-lsystemd-daemon")
    fi
    if test -n "$SYSTEMD_LIBS"; then
@@ -832,6 +835,10 @@ case $host in
         AC_MSG_WARN([Your system does not support systemd.])
       else
         AC_DEFINE(HAVE_SYSTEMD, 1, [Define if systemd is supported])
+        if test -n "$SYSTEMD_VERS" -a "$SYSTEMD_VERS" -gt 0; then
+           AC_DEFINE_UNQUOTED([AP_SYSTEMD_VERSION], [$SYSTEMD_VERS],
+              [Define to the systemd version if available])
+        fi
       fi
    fi
    ;;