From 7474c070565ddcb4481caa5daab4c164917697bb Mon Sep 17 00:00:00 2001
From: thomas-bc <thomas.boyerchammard@gmail.com>
Date: Mon, 4 Dec 2023 18:10:38 -0800
Subject: [PATCH] Prettify error message if googletest is missing

---
 cmake/FPrime.cmake | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cmake/FPrime.cmake b/cmake/FPrime.cmake
index 236c0a0c79b..fc86e13d4a2 100644
--- a/cmake/FPrime.cmake
+++ b/cmake/FPrime.cmake
@@ -160,6 +160,9 @@ function(fprime_setup_included_code)
     setup_global_targets()
     # For BUILD_TESTING builds then set up libraries that support testing
     if (BUILD_TESTING AND NOT DEFINED FPRIME_SUB_BUILD_TARGETS)
+        if (NOT EXISTS "${FPRIME_FRAMEWORK_PATH}/googletest/CMakeLists.txt")
+            message(FATAL_ERROR "googletest submodule not initialized or corrupted. Please run `git submodule update --init`.")
+        endif()
         add_subdirectory("${FPRIME_FRAMEWORK_PATH}/googletest/" "${CMAKE_BINARY_DIR}/F-Prime/googletest")
     endif()
     if (BUILD_TESTING)