From 44bc9bd2af79568215f4fd6f12bde4de7c37586d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?K=C3=A9vin=20Petit?= <kevin.petit@arm.com>
Date: Sat, 18 Mar 2023 01:05:12 +0000
Subject: [PATCH] build: cmake: support passing a custom source folder for
 GoogleTest (#5157)

---
 external/CMakeLists.txt | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 676ee979e..81011f1a2 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -56,7 +56,9 @@ if (NOT ${SPIRV_SKIP_TESTS})
   if (TARGET gmock)
     message(STATUS "Google Mock already configured")
   else()
-    set(GMOCK_DIR ${CMAKE_CURRENT_SOURCE_DIR}/googletest)
+    if (NOT GMOCK_DIR)
+      set(GMOCK_DIR ${CMAKE_CURRENT_SOURCE_DIR}/googletest)
+    endif()
     if(EXISTS ${GMOCK_DIR})
       if(MSVC)
         # Our tests use ::testing::Combine.  Work around a compiler
@@ -73,7 +75,7 @@ if (NOT ${SPIRV_SKIP_TESTS})
       # gtest requires special defines for building as a shared
       # library, simply always build as static.
       push_variable(BUILD_SHARED_LIBS 0)
-      add_subdirectory(${GMOCK_DIR} EXCLUDE_FROM_ALL)
+      add_subdirectory(${GMOCK_DIR} ${CMAKE_CURRENT_BINARY_DIR}/googletest EXCLUDE_FROM_ALL)
       pop_variable(BUILD_SHARED_LIBS)
     endif()
   endif()