From ba20fa121a0e97a7862aa163a11c7337a05188f7 Mon Sep 17 00:00:00 2001
From: Manuel Bentele
Date: Thu, 11 Mar 2021 16:47:05 +0100
Subject: [BUILD] Enable lint targets if lint programs are found

---
 cmake/FindCheckPatch.cmake | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 cmake/FindCheckPatch.cmake

(limited to 'cmake/FindCheckPatch.cmake')

diff --git a/cmake/FindCheckPatch.cmake b/cmake/FindCheckPatch.cmake
new file mode 100644
index 0000000..2772676
--- /dev/null
+++ b/cmake/FindCheckPatch.cmake
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2021 Manuel Bentele <development@manuel-bentele.de>
+#
+
+# check if custom Linux kernel script directory was specified
+if(NOT KERNEL_SCRIPTS_DIR)
+    set(KERNEL_SCRIPTS_DIR "/lib/modules/${CMAKE_SYSTEM_VERSION}/build/scripts"
+        CACHE PATH "Path to Linux kernel scripts directory")
+endif(NOT KERNEL_SCRIPTS_DIR)
+
+# find the checkpatch.pl script in the given KERNEL_SCRIPTS_DIR
+find_program(CheckPatch_EXECUTABLE
+             NAMES checkpatch.pl
+             PATHS ${KERNEL_SCRIPTS_DIR})
+
+
+# get the checkpatch.pl version
+if(CheckPatch_EXECUTABLE)
+    execute_process(COMMAND ${CheckPatch_EXECUTABLE} --version
+                    OUTPUT_VARIABLE CheckPatch_VERBOSE_VERSION
+                    OUTPUT_STRIP_TRAILING_WHITESPACE)
+    string(REGEX REPLACE ".*Version:.([0-9]+\\.[0-9]+).*" "\\1" CheckPatch_VERSION ${CheckPatch_VERBOSE_VERSION})
+endif(CheckPatch_EXECUTABLE)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(CheckPatch
+                                  FOUND_VAR CheckPatch_FOUND
+                                  REQUIRED_VARS CheckPatch_EXECUTABLE
+                                  VERSION_VAR CheckPatch_VERSION
+                                  FAIL_MESSAGE "checkpatch.pl is not available! Please install checkpatch.pl to lint and format the source code!")
-- 
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