From 16cc15b23227c4ec866405b1bf205faf3d0f4a56 Mon Sep 17 00:00:00 2001
From: Damjan Marion <dmarion@me.com>
Date: Wed, 15 Feb 2023 22:10:05 +0100
Subject: [PATCH] build: check for presence of python ply

Type: improvement
Change-Id: I4f190607bfce404fbe68ec968e6923509ea9519b
Signed-off-by: Damjan Marion <dmarion@me.com>
---
 src/tools/vppapigen/CMakeLists.txt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/tools/vppapigen/CMakeLists.txt b/src/tools/vppapigen/CMakeLists.txt
index bfabc3a670c..04ebed54862 100644
--- a/src/tools/vppapigen/CMakeLists.txt
+++ b/src/tools/vppapigen/CMakeLists.txt
@@ -11,6 +11,22 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+find_package(
+  Python3
+  REQUIRED
+  COMPONENTS Interpreter
+)
+
+execute_process(
+  COMMAND ${Python3_EXECUTABLE} -c "import ply"
+  RESULT_VARIABLE _rv
+  OUTPUT_QUIET
+)
+
+if (NOT ${_rv} EQUAL 0)
+  message( FATAL_ERROR "The \"ply\" Python3 package is not installed.")
+endif()
+
 install(
   FILES vppapigen.py
   RENAME vppapigen
-- 
2.16.6