cmake: create cmake VPP module, update sample-plugin so it uses it

Change-Id: I32e91ba8e55797ffe169f98b09bdb42caa5c7de2
Signed-off-by: Damjan Marion <damarion@cisco.com>

5 files changed, 32 insertions, 126 deletions

diff --git a/src/examples/sample-plugin/CMakeLists.txt b/src/examples/sample-plugin/CMakeLists.txt
new file mode 100644
index 00000000000..eac58fbc258
--- /dev/null
+++ b/src/examples/sample-plugin/CMakeLists.txt
@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(sample-plugin)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+
+find_package(VPP)
+
+add_subdirectory(sample)
diff --git a/src/examples/sample-plugin/Makefile.am b/src/examples/sample-plugin/Makefile.am
deleted file mode 100644
index 1825a8f111f..00000000000
--- a/src/examples/sample-plugin/Makefile.am
+++ /dev/null
@@ -1,58 +0,0 @@
-# Copyright (c) 2015 Cisco and/or its affiliates.
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at:
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-AUTOMAKE_OPTIONS = foreign subdir-objects
-
-AM_CFLAGS = -Wall -I${top_srcdir} -I${top_builddir}
-AM_LDFLAGS = -module -shared -avoid-version
-AM_LIBTOOLFLAGS = --quiet
-SUFFIXES = .api.h .api .api.json
-API_FILES =
-BUILT_SOURCES =
-vppplugins_LTLIBRARIES =
-vppapitestplugins_LTLIBRARIES =
-noinst_HEADERS =
-nobase_apiinclude_HEADERS =
-ACLOCAL_AMFLAGS = -I m4
-
-vppapitestpluginsdir = ${libdir}/vpp_api_test_plugins
-vpppluginsdir = ${libdir}/vpp_plugins
-
-include sample.am
-
-%.api.h: %.api
-	@echo "  APIGEN  " $@ ;			\
-	mkdir -p `dirname $@` ;			\
-	vppapigen --input $^ --output $@
-
-%.api.json: %.api
-	@echo "  JSON APIGEN  " $@ ;		\
-	mkdir -p `dirname $@` ;			\
-	vppapigen --input $^ JSON --output $@
-
-apidir = $(prefix)/api/plugins
-apiincludedir = ${includedir}/vpp_plugins
-
-api_DATA = \
-	$(patsubst %.api,%.api.json,$(API_FILES))
-
-BUILT_SOURCES += \
-	$(patsubst %.api,%.api.h,$(API_FILES))
-
-
-# Remove *.la files
-install-data-hook:
-	@(cd $(vpppluginsdir) && $(RM) $(vppplugins_LTLIBRARIES))
-	@(cd $(vppapitestpluginsdir) && $(RM) $(vppapitestplugins_LTLIBRARIES))
-
-CLEANFILES = $(BUILT_SOURCES)
diff --git a/src/examples/sample-plugin/configure.ac b/src/examples/sample-plugin/configure.ac
deleted file mode 100644
index 69d989183c5..00000000000
--- a/src/examples/sample-plugin/configure.ac
+++ /dev/null
@@ -1,41 +0,0 @@
-AC_INIT(vpp_plugins, 1.0)
-LT_INIT
-AM_INIT_AUTOMAKE
-AM_SILENT_RULES([yes])
-AC_PREFIX_DEFAULT([/usr])
-
-AC_PROG_CC
-
-# Check if compiler supports specific flag
-AC_DEFUN([CC_CHECK_FLAG],
-[
-  AC_MSG_CHECKING([if $CC supports $1])
-  AC_LANG_PUSH([C])
-  ac_saved_cflags="$CFLAGS"
-  CFLAGS="-Werror $1"
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
-  [cc_flag_check=yes],
-  [cc_flag_check=no]
-)
-  AC_MSG_RESULT([$cc_flag_check])
-  CFLAGS="$ac_saved_cflags"
-  AC_LANG_POP([C])
-])
-
-AC_DEFUN([ENABLE_ARG],
-[
-  AC_ARG_ENABLE($1,
-    AC_HELP_STRING(patsubst([--enable-$1],[_],[-]), $2),
-    [enable_$1=yes n_enable_$1=1],
-    [enable_$1=no n_enable_$1=0])
-  AM_CONDITIONAL(m4_toupper(ENABLE_$1), test "$enable_$1" = "yes")
-  m4_append([list_of_enabled], [$1], [, ])
-])
-
-CC_CHECK_FLAG("-Wno-address-of-packed-member")
-AS_IF([test "$cc_flag_check" = yes],
-	[CFLAGS="${CFLAGS} -Wno-address-of-packed-member"], [])
-
-AC_OUTPUT([Makefile])
-
-AC_CONFIG_MACRO_DIR([m4])
diff --git a/src/examples/sample-plugin/sample.am b/src/examples/sample-plugin/sample/CMakeLists.txt
index 871b610aa73..f2fc1434492 100644
--- a/src/examples/sample-plugin/sample.am
+++ b/src/examples/sample-plugin/sample/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright (c) 2016 Cisco and/or its affiliates.
+# Copyright (c) 2018 Cisco and/or its affiliates.
 # 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:
@@ -11,21 +11,22 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-vppapitestplugins_LTLIBRARIES += sample_test_plugin.la
-vppplugins_LTLIBRARIES += sample_plugin.la
+include_directories(${CMAKE_SOURCE_DIR})
 
-sample_plugin_la_SOURCES =		\
-	sample/sample.c				\
-	sample/node.c				\
-	sample/sample_plugin.api.h
+# for generated API headers:
+include_directories(${CMAKE_BINARY_DIR})
 
-API_FILES += sample/sample.api
+add_vpp_plugin(sample
+  SOURCES
+  node.c
+  sample.c
 
-nobase_apiinclude_HEADERS +=			\
-  sample/sample_all_api_h.h				\
-  sample/sample_msg_enum.h				\
-  sample/sample.api.h
+  MULTIARCH_SOURCES
+  node.c
 
-sample_test_plugin_la_SOURCES = sample/sample_test.c sample/sample_plugin.api.h
+  API_FILES
+  sample.api
 
-# vi:syntax=automake
+  API_TEST_SOURCES
+  sample_test.c
+)
diff --git a/src/examples/sample-plugin/sample/node.c b/src/examples/sample-plugin/sample/node.c
index 7f34be56168..009968b6099 100644
--- a/src/examples/sample-plugin/sample/node.c
+++ b/src/examples/sample-plugin/sample/node.c
@@ -45,7 +45,7 @@ format_sample_trace (u8 * s, va_list * args)
   return s;
 }
 
-vlib_node_registration_t sample_node;
+extern vlib_node_registration_t sample_node;
 
 #define foreach_sample_error \
 _(SWAPPED, "Mac swap packets processed")
@@ -87,9 +87,8 @@ _(3)                                            \
 _(4)                                            \
 _(5)
 
-static uword
-sample_node_fn (vlib_main_t * vm,
-		vlib_node_runtime_t * node, vlib_frame_t * frame)
+VLIB_NODE_FN (sample_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
+			    vlib_frame_t * frame)
 {
   u32 n_left_from, *from, *to_next;
   sample_next_t next_index;
@@ -285,9 +284,8 @@ sample_node_fn (vlib_main_t * vm,
  * Node costs about 17 clocks/pkt at a vector size of 26
  */
 #ifdef VERSION_2
-static uword
-sample_node_fn (vlib_main_t * vm,
-		vlib_node_runtime_t * node, vlib_frame_t * frame)
+VLIB_NODE_FN (sample_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
+			    vlib_frame_t * frame)
 {
   u32 n_left_from, *from, *to_next;
   sample_next_t next_index;
@@ -475,9 +473,8 @@ sample_node_fn (vlib_main_t * vm,
 /* This would normally be a stack local, but since it's a constant... */
 static const u16 nexts[VLIB_FRAME_SIZE] = { 0 };
 
-static uword
-sample_node_fn (vlib_main_t * vm,
-		vlib_node_runtime_t * node, vlib_frame_t * frame)
+VLIB_NODE_FN (sample_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
+			    vlib_frame_t * frame)
 {
   u32 n_left_from, *from;
   u32 pkts_swapped = 0;
@@ -605,7 +602,6 @@ sample_node_fn (vlib_main_t * vm,
 /* *INDENT-OFF* */
 VLIB_REGISTER_NODE (sample_node) =
 {
-  .function = sample_node_fn,
   .name = "sample",
   .vector_size = sizeof (u32),
   .format_trace = format_sample_trace,
@@ -623,8 +619,6 @@ VLIB_REGISTER_NODE (sample_node) =
 };
 /* *INDENT-ON* */
 
-VLIB_NODE_FUNCTION_MULTIARCH (sample_node, sample_node_fn);
-
 /*
  * fd.io coding-style-patch-verification: ON
  *