From 8cc3870f09d728d9017c72eba9520117a4283fee Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar@redhat.com>
Date: Thu, 17 Nov 2022 09:01:10 +0000
Subject: Add install targets for gtest

Stand-alone builds need an installed version of gtest in order to run
the unittests.

Differential Revision: https://reviews.llvm.org/D137890
---
 third-party/unittest/CMakeLists.txt | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/third-party/unittest/CMakeLists.txt b/third-party/unittest/CMakeLists.txt
index 0e54e0e57c35..1d2a52730d7d 100644
--- a/third-party/unittest/CMakeLists.txt
+++ b/third-party/unittest/CMakeLists.txt
@@ -65,12 +65,25 @@ if (NOT LLVM_ENABLE_THREADS)
 endif ()
 
 target_include_directories(llvm_gtest
-  PUBLIC googletest/include googlemock/include
+  PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/googletest/include>
+         $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/googlemock/include>
+         $<INSTALL_INTERFACE:include/llvm-gtest/>
+         $<INSTALL_INTERFACE:include/llvm-gmock/>
   PRIVATE googletest googlemock
   )
 
 add_subdirectory(UnitTestMain)
 
+if (LLVM_INSTALL_GTEST)
+export(TARGETS llvm_gtest llvm_gtest_main LLVMTestingSupport FILE LLVMGTestConfig.cmake)
+install(TARGETS llvm_gtest llvm_gtest_main LLVMTestingSupport EXPORT LLVMGTestConfig
+  ARCHIVE DESTINATION "lib${LLVM_LIBDIR_SUFFIX}" COMPONENT llvm_gtest)
+  install(EXPORT LLVMGTestConfig DESTINATION ${LLVM_INSTALL_PACKAGE_DIR} COMPONENT llvm_gtest)
+    add_llvm_install_targets(install-llvm_gtest COMPONENT llvm_gtest DEPENDS llvm_gtest LLVMGTestConfig.cmake)
+  install(DIRECTORY googletest/include/gtest/ DESTINATION include/llvm-gtest/gtest/ COMPONENT llvm_gtest)
+  install(DIRECTORY googlemock/include/gmock/ DESTINATION include/llvm-gmock/gmock/ COMPONENT llvm_gtest)
+endif()
+
 # When LLVM_LINK_LLVM_DYLIB is enabled, libLLVM.so is added to the interface
 # link libraries for gtest and gtest_main.  This means that any target, like
 # unittests for example, that links against gtest will be forced to link
-- 
2.34.3