build: skip sub-directories containing disabled plugins

Currently, make enters all sub-directories containing source-code, even
if they only contain optional targets which are not configured to be
built.  Instead, change the Makefiles so that the sub-directories are
optional, rather than the targets.

Group sub-directory definitions consistently at the top of the Makefiles
that contain them.

Trim a few leading and trailing blank lines.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

6 files changed, 27 insertions, 22 deletions

diff --git a/output/Makefile.am b/output/Makefile.am
index 879c317..cdb49df 100644
--- a/output/Makefile.am
+++ b/output/Makefile.am
@@ -1,11 +1,36 @@
+if HAVE_PCAP
+  OPT_SUBDIR_PCAP = pcap
+endif
+
+if HAVE_MYSQL
+  OPT_SUBDIR_MYSQL = mysql
+endif
+
+if HAVE_PGSQL
+  OPT_SUBDIR_PGSQL = pgsql
+endif
+
+if HAVE_SQLITE3
+  OPT_SUBDIR_SQLITE3 = sqlite3
+endif
+
+if HAVE_DBI
+  OPT_SUBDIR_DBI = dbi
+endif
+
+SUBDIRS = $(OPT_SUBDIR_PCAP) \
+	  $(OPT_SUBDIR_MYSQL) \
+	  $(OPT_SUBDIR_PGSQL) \
+	  $(OPT_SUBDIR_SQLITE3) \
+	  $(OPT_SUBDIR_DBI) \
+	  ipfix
+
 include $(top_srcdir)/Make_global.am
 
 AM_CPPFLAGS += ${LIBNETFILTER_ACCT_CFLAGS} \
 	       ${LIBNETFILTER_CONNTRACK_CFLAGS} \
 	       ${LIBNETFILTER_LOG_CFLAGS}
 
-SUBDIRS= pcap mysql pgsql sqlite3 dbi ipfix
-
 pkglib_LTLIBRARIES = ulogd_output_LOGEMU.la ulogd_output_SYSLOG.la \
 			 ulogd_output_OPRINT.la ulogd_output_GPRINT.la \
 			 ulogd_output_NACCT.la ulogd_output_XML.la \
diff --git a/output/dbi/Makefile.am b/output/dbi/Makefile.am
index 38db0a2..f8b0a9c 100644
--- a/output/dbi/Makefile.am
+++ b/output/dbi/Makefile.am
@@ -2,12 +2,8 @@ include $(top_srcdir)/Make_global.am
 
 AM_CPPFLAGS += $(DBI_INC)
 
-if HAVE_DBI
-
 pkglib_LTLIBRARIES = ulogd_output_DBI.la
 
 ulogd_output_DBI_la_SOURCES = ulogd_output_DBI.c ../../util/db.c
 ulogd_output_DBI_la_LIBADD  = ${DBI_LIB}
 ulogd_output_DBI_la_LDFLAGS = -avoid-version -module
-
-endif
diff --git a/output/mysql/Makefile.am b/output/mysql/Makefile.am
index 3839a13..54abb96 100644
--- a/output/mysql/Makefile.am
+++ b/output/mysql/Makefile.am
@@ -2,12 +2,8 @@ include $(top_srcdir)/Make_global.am
 
 AM_CPPFLAGS += $(MYSQL_INC)
 
-if HAVE_MYSQL
-
 pkglib_LTLIBRARIES = ulogd_output_MYSQL.la
 
 ulogd_output_MYSQL_la_SOURCES = ulogd_output_MYSQL.c ../../util/db.c
 ulogd_output_MYSQL_la_LIBADD  = ${MYSQL_LIB}
 ulogd_output_MYSQL_la_LDFLAGS = -avoid-version -module
-
-endif
diff --git a/output/pcap/Makefile.am b/output/pcap/Makefile.am
index a022bf0..9b4b3dd 100644
--- a/output/pcap/Makefile.am
+++ b/output/pcap/Makefile.am
@@ -1,11 +1,7 @@
 include $(top_srcdir)/Make_global.am
 
-if HAVE_PCAP
-
 pkglib_LTLIBRARIES = ulogd_output_PCAP.la
 
 ulogd_output_PCAP_la_SOURCES = ulogd_output_PCAP.c
 ulogd_output_PCAP_la_LIBADD  = ${libpcap_LIBS}
 ulogd_output_PCAP_la_LDFLAGS = -avoid-version -module
-
-endif
diff --git a/output/pgsql/Makefile.am b/output/pgsql/Makefile.am
index fbc0d04..9cdf22d 100644
--- a/output/pgsql/Makefile.am
+++ b/output/pgsql/Makefile.am
@@ -2,12 +2,8 @@ include $(top_srcdir)/Make_global.am
 
 AM_CPPFLAGS += -I$(PQINCPATH)
 
-if HAVE_PGSQL
-
 pkglib_LTLIBRARIES = ulogd_output_PGSQL.la
 
 ulogd_output_PGSQL_la_SOURCES = ulogd_output_PGSQL.c ../../util/db.c
 ulogd_output_PGSQL_la_LIBADD  = ${PQLIBS}
 ulogd_output_PGSQL_la_LDFLAGS = -avoid-version -module
-
-endif
diff --git a/output/sqlite3/Makefile.am b/output/sqlite3/Makefile.am
index e00e1d6..72fd1a6 100644
--- a/output/sqlite3/Makefile.am
+++ b/output/sqlite3/Makefile.am
@@ -2,12 +2,8 @@ include $(top_srcdir)/Make_global.am
 
 AM_CPPFLAGS += ${libsqlite3_CFLAGS}
 
-if HAVE_SQLITE3
-
 pkglib_LTLIBRARIES = ulogd_output_SQLITE3.la
 
 ulogd_output_SQLITE3_la_SOURCES = ulogd_output_SQLITE3.c ../../util/db.c
 ulogd_output_SQLITE3_la_LIBADD  = ${libsqlite3_LIBS}
 ulogd_output_SQLITE3_la_LDFLAGS = -avoid-version -module
-
-endif