[pybind11] As submodule

Author: Murilo Marinho

.github/workflows/build.yml

@@ -7,7 +7,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
+        with:
+          submodules: true
 
       - name: apt update
         run: sudo apt-get update && sudo apt-get upgrade -y

.gitmodules

@@ -0,0 +1,4 @@
+[submodule "docker/pybind11"]
+	path = docker/pybind11
+	url = https://github.com/pybind/pybind11.git
+	branch = v3.0

CMakeLists.txt

@@ -1,5 +1,4 @@
-cmake_minimum_required(VERSION 3.14)
-# FetchContent_MakeAvailable since version 3.14
+cmake_minimum_required(VERSION 3.8)
 
 project(sas_common)
 
@@ -11,13 +10,7 @@ endif()
 # pybind11 import block [BEGIN] #
 # vvvvvvvvvvvvvvvvvvvvvvvvvvvvv #
 set(PYBIND11_FINDPYTHON ON) # Fix CMP0148 Warning. https://github.com/pybind/pybind11/issues/4785
-include(FetchContent) #Use pybind11 v3.0 for compatibility with dqrobotics.
-FetchContent_Declare(
-  pybind11
-  GIT_REPOSITORY https://github.com/pybind/pybind11.git
-  GIT_TAG        v3.0
-)
-FetchContent_MakeAvailable(pybind11)
+add_subdirectory(pybind11)
 # ^^^^^^^^^^^^^^^^^^^^^^^^^^^ #
 # pybind11 import block [END] #
 ###############################