Finish cleanup of .../plugins/{configure.ac, Makefile.am}

To add a new plugin subdirectory, add this to Makefile.am:

if ENABLE_new_PLUGIN
SUBDIRS += new-plugin
endif

and add this to configure.ac:
PLUGIN(new)

Change-Id: I770a6f4f8f964fd7318a912be486accf46514b59
Signed-off-by: Dave Barach <dave@barachs.net>

6 files changed, 44 insertions, 87 deletions

diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 83dc70bfeda..350a00e3c3f 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -13,23 +13,33 @@
 
 AUTOMAKE_OPTIONS = foreign subdir-objects
 
+# To add a new plugin subdirectory:
+#
+# add a stanza here:
+# if ENABLE_new_PLUGIN
+# SUBDIRS += new-plugin
+# endif
+#
+# Also: add PLUGIN(new) to configure.ac
+
 SUBDIRS =
-if ENABLE_SAMPLE_PLUGIN
+
+if ENABLE_sample_PLUGIN
 SUBDIRS += sample-plugin
 endif
 
-if ENABLE_SIXRD_PLUGIN
+if ENABLE_sixrd_PLUGIN
 SUBDIRS += sixrd-plugin
 endif
 
-if ENABLE_IOAM_PLUGIN
+if ENABLE_ioam_PLUGIN
 SUBDIRS += ioam-plugin
 endif
 
-if ENABLE_VCGN_PLUGIN
+if ENABLE_vcgn_PLUGIN
 SUBDIRS += vcgn-plugin
 endif
 
-if ENABLE_SNAT_PLUGIN
+if ENABLE_snat_PLUGIN
 SUBDIRS += snat-plugin
 endif
diff --git a/plugins/configure.ac b/plugins/configure.ac
index 8a5fdbc2175..7aff9875edf 100644
--- a/plugins/configure.ac
+++ b/plugins/configure.ac
@@ -29,87 +29,31 @@ AM_CONDITIONAL(ENABLE_TESTS, test "$enable_tests" = "1")
 AM_CONDITIONAL(WITH_DPDK, test "$with_dpdk" = "1")
 AC_SUBST(DPDK,["-DDPDK=${with_dpdk}"])
 
-
-#
-# Please DO NOT, UNDER ANY CIRCUMSTANCES enable or disable
-# plugins by "clever" manipulation of the arguments to AC_ARG_ENABLE
-#
-# Instead, please configure the default set of plugins in 
-# .../build-data/platforms/<platform>.mk, by adding --enable-XXX-plugin
-# stanzas to plugins_configure_args_<platform> 
-
-# The following per-plugin boilerplate is begging for an additional
-# macro, but the first 10 tries at making one didn't work. Another day.
-
-#
-# Sample plugin
-#
-AC_ARG_ENABLE(sample_plugin,
-              AC_HELP_STRING([--enable-sample-plugin], [Build sample plugin]),
-              [enable_sample_plugin=1],
-              [enable_sample_plugin=0])
-
-if test "x$enable_sample_plugin" = x1; then
-   AC_CONFIG_SUBDIRS([sample-plugin])
-fi
-
-AM_CONDITIONAL(ENABLE_SAMPLE_PLUGIN, test "$enable_sample_plugin" = "1")
-
-#
-# SIXRD plugin
-#
-AC_ARG_ENABLE(sixrd_plugin,
-              AC_HELP_STRING([--enable-sixrd-plugin], [Build sixrd plugin]),
-              [enable_sixrd_plugin=1],
-              [enable_sixrd_plugin=0])
-
-if test "x$enable_sixrd_plugin" = x1; then
-   AC_CONFIG_SUBDIRS([sixrd-plugin])
-fi
-
-AM_CONDITIONAL(ENABLE_SIXRD_PLUGIN, test "$enable_sixrd_plugin" = "1")
-
-#
-# IOAM plugin
-#
-AC_ARG_ENABLE(ioam_plugin,
-              AC_HELP_STRING([--enable-ioam-plugin], [Build ioam plugin]),
-              [enable_ioam_plugin=1],
-              [enable_ioam_plugin=0])
-
-if test "x$enable_ioam_plugin" = x1; then
-   AC_CONFIG_SUBDIRS([ioam-plugin])
-fi
-
-AM_CONDITIONAL(ENABLE_IOAM_PLUGIN, test "$enable_ioam_plugin" = "1")
-
-#
-# VCGN plugin
-#
-AC_ARG_ENABLE(vcgn_plugin,
-              AC_HELP_STRING([--enable-vcgn-plugin], [Build vcgn plugin]),
-              [enable_vcgn_plugin=1],
-              [enable_vcgn_plugin=0])
-
-if test "x$enable_vcgn_plugin" = x1; then
-   AC_CONFIG_SUBDIRS([vcgn-plugin])
+AC_DEFUN([PLUGIN],
+[
+   AC_ARG_ENABLE($1_plugin,
+       AC_HELP_STRING([--enable-$1-plugin], [Build $1 plugin]),
+              [enable_the_plugin=1],
+              [enable_the_plugin=0])
+if test "x$enable_the_plugin" = x1; then
+   AC_CONFIG_SUBDIRS($1-plugin)
 fi
-
-AM_CONDITIONAL(ENABLE_VCGN_PLUGIN, test "$enable_vcgn_plugin" = "1")
-
-#
-# SNAT plugin
-#
-AC_ARG_ENABLE(snat_plugin,
-              AC_HELP_STRING([--enable-snat-plugin], [Build snat plugin]),
-              [enable_snat_plugin=1],
-              [enable_snat_plugin=0])
-
-if test "x$enable_snat_plugin" = x1; then
-   AC_CONFIG_SUBDIRS([snat-plugin])
-fi
-
-AM_CONDITIONAL(ENABLE_SNAT_PLUGIN, test "$enable_snat_plugin" = "1")
-
+AM_CONDITIONAL(ENABLE_$1_PLUGIN, test "$enable_the_plugin" = "1")
+])
+
+# To add a new plugin subdirectory:
+# 
+# add PLUGIN(new) below, and
+# add the following to Makefile.am:
+#
+# if ENABLE_new_PLUGIN
+# SUBDIRS += new-plugin
+# endif
+
+PLUGIN(sample)
+PLUGIN(sixrd)
+PLUGIN(ioam)
+PLUGIN(vcgn)
+PLUGIN(snat)
 
 AC_OUTPUT([Makefile])
diff --git a/plugins/sample-plugin/configure.ac b/plugins/sample-plugin/configure.ac
index 7defc83d033..a825730574f 100644
--- a/plugins/sample-plugin/configure.ac
+++ b/plugins/sample-plugin/configure.ac
@@ -1,6 +1,7 @@
 AC_INIT(sample_plugin, 1.0)
 LT_INIT
 AM_INIT_AUTOMAKE
+AM_SILENT_RULES([yes])
 
 AM_PROG_AS
 AC_PROG_CC
diff --git a/plugins/sixrd-plugin/configure.ac b/plugins/sixrd-plugin/configure.ac
index c00a23bb209..1652c87f644 100644
--- a/plugins/sixrd-plugin/configure.ac
+++ b/plugins/sixrd-plugin/configure.ac
@@ -1,6 +1,7 @@
 AC_INIT(sixrd_plugin, 1.0)
 LT_INIT
 AM_INIT_AUTOMAKE
+AM_SILENT_RULES([yes])
 
 AM_PROG_AS
 AC_PROG_CC
diff --git a/plugins/snat-plugin/configure.ac b/plugins/snat-plugin/configure.ac
index e43437d2690..e10b18ac2ee 100644
--- a/plugins/snat-plugin/configure.ac
+++ b/plugins/snat-plugin/configure.ac
@@ -1,6 +1,6 @@
-
 AC_INIT(snat_plugin, 1.0)
 AM_INIT_AUTOMAKE
+AM_SILENT_RULES([yes])
 
 AC_PROG_LIBTOOL
 AM_PROG_AS
diff --git a/plugins/vcgn-plugin/configure.ac b/plugins/vcgn-plugin/configure.ac
index ced22669a34..5bc8bd9d876 100644
--- a/plugins/vcgn-plugin/configure.ac
+++ b/plugins/vcgn-plugin/configure.ac
@@ -1,6 +1,7 @@
 AC_INIT(vcgn_plugin, 1.0)
 LT_INIT
 AM_INIT_AUTOMAKE
+AM_SILENT_RULES([yes])
 
 AM_PROG_AS
 AC_PROG_CC