From 649e8e1756397f65c8c79681b3aec5f3505432d5 Mon Sep 17 00:00:00 2001
From: Jonathan Hui <jonhui@google.com>
Date: Thu, 17 Jun 2021 10:01:02 -0700
Subject: [PATCH] [cmake] always use git hash for default package version
 (#6717)

---
 CMakeLists.txt            |  6 +-----
 etc/cmake/functions.cmake | 10 ++++++++++
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cbfa8dda3..119395785 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -98,11 +98,7 @@ message(STATUS "Package Name: ${OT_PACKAGE_NAME}")
 
 set(OT_PACKAGE_VERSION "" CACHE STRING "OpenThread Package Version")
 if(OT_PACKAGE_VERSION STREQUAL "")
-    execute_process(
-        COMMAND bash "-c" "third_party/nlbuild-autotools/repo/scripts/mkversion -b ${OT_DEFAULT_VERSION}"
-        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
-        OUTPUT_VARIABLE OT_PACKAGE_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
+    ot_git_version(OT_PACKAGE_VERSION)
     message(STATUS "Setting default package version: ${OT_PACKAGE_VERSION}")
 endif()
 target_compile_definitions(ot-config INTERFACE "PACKAGE_VERSION=\"${OT_PACKAGE_VERSION}\"")
diff --git a/etc/cmake/functions.cmake b/etc/cmake/functions.cmake
index 4cb0bef8c..464b106af 100755
--- a/etc/cmake/functions.cmake
+++ b/etc/cmake/functions.cmake
@@ -41,3 +41,13 @@ function(ot_get_platforms arg_platforms)
     list(SORT result)
     set(${arg_platforms} "${result}" PARENT_SCOPE)
 endfunction()
+
+function(ot_git_version git_version)
+    execute_process(
+        COMMAND git describe --dirty --always
+        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+        OUTPUT_VARIABLE GIT_REV OUTPUT_STRIP_TRAILING_WHITESPACE
+        ERROR_QUIET
+    )
+    set(${git_version} "${GIT_REV}" PARENT_SCOPE)
+endfunction()