File imjournal-optional.patch of Package rsyslog

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File imjournal-optional.patch of Package rsyslog

diff --git a/configure.ac b/configure.ac
index 006371dd2..381d92705 100644
--- a/configure.ac
+++ b/configure.ac
@@ -548,18 +548,26 @@ AC_ARG_ENABLE(imjournal,
         [case "${enableval}" in
          yes) enable_imjournal="yes" ;;
           no) enable_imjournal="no" ;;
+         optional) enable_imjournal="optional" ;;
            *) AC_MSG_ERROR(bad value ${enableval} for --enable-imjournal) ;;
          esac],
         [enable_imjournal="no"]
 )
-if test "x$enable_imjournal" = "xyes"; then
+imjournal_use_dummy="no"
+if test "x$enable_imjournal" = "xyes" -o "x$enable_imjournal" = "xoptional"; then
 	PKG_CHECK_MODULES([LIBSYSTEMD_JOURNAL], [libsystemd >= 234] , [AC_DEFINE(NEW_JOURNAL, 1, [new systemd present])] , [
 	    PKG_CHECK_MODULES([LIBSYSTEMD_JOURNAL], [libsystemd >= 209] , , [
-	        PKG_CHECK_MODULES([LIBSYSTEMD_JOURNAL], [libsystemd-journal >= 197])
+	        PKG_CHECK_MODULES([LIBSYSTEMD_JOURNAL], [libsystemd-journal >= 197], , [
+                    AS_IF([test x$enable_imjournal = xyes],
+                        AC_MSG_FAILURE([imjournal support libraries are missing])
+	            )
+                    imjournal_use_dummy="yes"
+                 ])
 	    ])
 	])
 fi
-AM_CONDITIONAL(ENABLE_IMJOURNAL, test x$enable_imjournal = xyes)
+AM_CONDITIONAL(IMJOURNAL_USE_DUMMY, test x$imjournal_use_dummy = xyes)
+AM_CONDITIONAL(ENABLE_IMJOURNAL, test x$enable_imjournal = xyes -o x$enable_imjournal = xoptional)
 
 # use libsystemd
 AC_ARG_ENABLE(libsystemd,
@@ -2670,6 +2678,9 @@ echo "    Solaris input module enabled:             $enable_imsolaris"
 echo "    periodic statistics module enabled:       $enable_impstats"
 echo "    imczmq input module enabled:              $enable_imczmq"
 echo "    imjournal input module enabled:           $enable_imjournal"
+if test "$enable_imjournal" = "optional"; then
+echo "        imjournal use dummy:                  $imjournal_use_dummy"
+fi
 echo "    imbatchreport input module enabled:       $enable_imbatchreport"
 echo "    imkafka module will be compiled:          $enable_imkafka"
 if test "$enable_imkafka" = "optional"; then
diff --git a/plugins/imjournal/Makefile.am b/plugins/imjournal/Makefile.am
index c9762eee4..53061305f 100644
--- a/plugins/imjournal/Makefile.am
+++ b/plugins/imjournal/Makefile.am
@@ -1,7 +1,12 @@
 pkglib_LTLIBRARIES = imjournal.la
-imjournal_la_SOURCES = imjournal.c
 
+if IMJOURNAL_USE_DUMMY
+imjournal_la_SOURCES = dummy.c
+imjournal_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) -D MODNAME=imjournal
+imjournal_la_LDFLAGS = -module -avoid-version
+else
+imjournal_la_SOURCES = imjournal.c
 imjournal_la_CPPFLAGS = $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(LIBSYSTEMD_JOURNAL_CFLAGS)
-#imjournal_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(LIBSYSTEMD_JOURNAL_CFLAGS)
 imjournal_la_LDFLAGS = -module -avoid-version
 imjournal_la_LIBADD =  $(LIBSYSTEMD_JOURNAL_LIBS)
+endif
diff --git a/plugins/imjournal/dummy.c b/plugins/imjournal/dummy.c
new file mode 100644
index 000000000..1e9941606
--- /dev/null
+++ b/plugins/imjournal/dummy.c
@@ -0,0 +1,171 @@
+/* a dummy module to be loaded if we cannot build this module, but
+ * configure required it to be "optional".
+ *
+ * Copyright 2020 Rainer Gerhards and Adiscon GmbH.
+ *
+ * This file is part of rsyslog.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *       -or-
+ *       see COPYING.ASL20 in the source distribution
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "config.h"
+#include "rsyslog.h"
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <signal.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <pthread.h>
+#include "conf.h"
+#include "syslogd-types.h"
+#include "srUtils.h"
+#include "template.h"
+#include "module-template.h"
+#include "errmsg.h"
+#include "parserif.h"
+
+#define MODULE_NAME(x) #x
+
+MODULE_TYPE_OUTPUT
+MODULE_TYPE_NOKEEP
+MODULE_CNFNAME(MODULE_NAME(MODNAME))
+
+
+DEF_OMOD_STATIC_DATA
+
+/* config variables */
+typedef struct _instanceData {
+	char *dummy;
+} instanceData;
+
+typedef struct wrkrInstanceData {
+	instanceData *pData;
+} wrkrInstanceData_t;
+
+struct modConfData_s {
+};
+
+/* modConf ptr to use for the current load process */
+static modConfData_t *loadModConf = NULL;
+/* modConf ptr to use for the current exec process */
+static modConfData_t *runModConf  = NULL;
+
+
+
+
+BEGINbeginCnfLoad
+CODESTARTbeginCnfLoad
+	loadModConf = pModConf;
+ENDbeginCnfLoad
+
+BEGINendCnfLoad
+CODESTARTendCnfLoad
+ENDendCnfLoad
+
+BEGINcheckCnf
+CODESTARTcheckCnf
+ENDcheckCnf
+
+BEGINactivateCnf
+CODESTARTactivateCnf
+	runModConf = pModConf;
+ENDactivateCnf
+
+BEGINfreeCnf
+CODESTARTfreeCnf
+ENDfreeCnf
+
+
+BEGINcreateWrkrInstance
+CODESTARTcreateWrkrInstance
+ENDcreateWrkrInstance
+
+
+BEGINisCompatibleWithFeature
+CODESTARTisCompatibleWithFeature
+ENDisCompatibleWithFeature
+
+
+BEGINfreeInstance
+CODESTARTfreeInstance
+ENDfreeInstance
+
+
+BEGINfreeWrkrInstance
+CODESTARTfreeWrkrInstance
+ENDfreeWrkrInstance
+
+
+BEGINsetModCnf
+CODESTARTsetModCnf
+	(void) lst;
+	parser_errmsg("%s is an optional module which could not be built on your platform "
+		"please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME));
+ENDsetModCnf
+
+
+BEGINnewActInst
+CODESTARTnewActInst
+	(void) pData;
+	(void) ppModData;
+	parser_errmsg("%s is an optional module which could not be built on your platform "
+		"please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME));
+ENDnewActInst
+
+
+BEGINdbgPrintInstInfo
+CODESTARTdbgPrintInstInfo
+ENDdbgPrintInstInfo
+
+
+BEGINtryResume
+CODESTARTtryResume
+ENDtryResume
+
+
+BEGINdoAction_NoStrings
+CODESTARTdoAction
+	(void) pMsgData;
+ENDdoAction
+
+
+NO_LEGACY_CONF_parseSelectorAct
+
+
+BEGINmodExit
+CODESTARTmodExit
+ENDmodExit
+
+
+BEGINqueryEtryPt
+CODESTARTqueryEtryPt
+CODEqueryEtryPt_STD_OMOD_QUERIES
+CODEqueryEtryPt_STD_OMOD8_QUERIES
+CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES
+CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES
+CODEqueryEtryPt_STD_CONF2_QUERIES
+ENDqueryEtryPt
+
+
+BEGINmodInit()
+CODESTARTmodInit
+	/* we only support the current interface specification */
+	*ipIFVersProvided = CURR_MOD_IF_VERSION;
+CODEmodInit_QueryRegCFSLineHdlr
+	dbgprintf("mmdblookup: module compiled with rsyslog version %s.\n", VERSION);
+ENDmodInit

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File imjournal-optional.patch of Package rsyslog

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