From 7f0f1e7e34f997eef697856804dd478b54bb365e Mon Sep 17 00:00:00 2001
From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Date: Tue, 22 Dec 2020 10:45:21 +0100
Subject: [PATCH] CMakeLists.txt: respect BUILD_TESTING=OFF

Allow the user to disable unit tests through BUILD_TESTING=OFF:
https://cmake.org/cmake/help/latest/command/enable_testing.html

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Upstream status: https://github.com/apitrace/apitrace/pull/698]
---
 CMakeLists.txt           | 6 +++++-
 gui/CMakeLists.txt       | 6 ++++--
 lib/guids/CMakeLists.txt | 6 ++++--
 lib/os/CMakeLists.txt    | 6 ++++--
 lib/trace/CMakeLists.txt | 6 ++++--
 5 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4a07f069..ee401887 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,6 +41,8 @@ option (ENABLE_FRAME_POINTER "Disable frame pointer omission" ON)
 
 option (ENABLE_ASAN "Enable Address Sanitizer" OFF)
 
+option (BUILD_TESTING "Enable unit tests" ON)
+
 option (ENABLE_TESTS "Enable additional tests" OFF)
 
 if (ANDROID)
@@ -433,7 +435,9 @@ endmacro ()
 # which subdirectory they are declared
 set (CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 
-enable_testing ()
+if (BUILD_TESTING)
+    enable_testing ()
+endif ()
 if (CMAKE_CROSSCOMPILING)
     add_custom_target (check)
 elseif (DEFINED CMAKE_BUILD_TYPE)
diff --git a/gui/CMakeLists.txt b/gui/CMakeLists.txt
index 5baf3552..ad6ee501 100644
--- a/gui/CMakeLists.txt
+++ b/gui/CMakeLists.txt
@@ -13,8 +13,10 @@ add_library (qubjson STATIC
     qubjson.cpp
 )
 
-add_gtest (qubjson_test qubjson_test.cpp)
-target_link_libraries (qubjson_test qubjson)
+if (BUILD_TESTING)
+    add_gtest (qubjson_test qubjson_test.cpp)
+    target_link_libraries (qubjson_test qubjson)
+endif ()
 
 set(qapitrace_SRCS
    apisurface.cpp
diff --git a/lib/guids/CMakeLists.txt b/lib/guids/CMakeLists.txt
index ce0f86da..ea28a18f 100644
--- a/lib/guids/CMakeLists.txt
+++ b/lib/guids/CMakeLists.txt
@@ -5,5 +5,7 @@ add_library (guids STATIC
     guids.hpp
 )
 
-add_gtest (guids_test guids_test.cpp)
-target_link_libraries (guids_test guids)
+if (BUILD_TESTING)
+    add_gtest (guids_test guids_test.cpp)
+    target_link_libraries (guids_test guids)
+endif ()
diff --git a/lib/os/CMakeLists.txt b/lib/os/CMakeLists.txt
index 222411e0..b7134b57 100644
--- a/lib/os/CMakeLists.txt
+++ b/lib/os/CMakeLists.txt
@@ -36,5 +36,7 @@ if (APPLE)
     )
 endif ()
 
-add_gtest (os_thread_test os_thread_test.cpp)
-target_link_libraries (os_thread_test os)
+if (BUILD_TESTING)
+    add_gtest (os_thread_test os_thread_test.cpp)
+    target_link_libraries (os_thread_test os)
+endif ()
diff --git a/lib/trace/CMakeLists.txt b/lib/trace/CMakeLists.txt
index c68bd00f..d95df978 100644
--- a/lib/trace/CMakeLists.txt
+++ b/lib/trace/CMakeLists.txt
@@ -34,5 +34,7 @@ target_link_libraries (common
     brotli_dec brotli_common
 )
 
-add_gtest (trace_parser_flags_test trace_parser_flags_test.cpp)
-target_link_libraries (trace_parser_flags_test common)
+if (BUILD_TESTING)
+    add_gtest (trace_parser_flags_test trace_parser_flags_test.cpp)
+    target_link_libraries (trace_parser_flags_test common)
+endif ()
-- 
2.29.2