https://github.com/libjxl/libjxl/issues/3137
https://github.com/libjxl/libjxl/pull/3138

From 5e5dda47aee0a6f480984cf13cfc2be0044316e4 Mon Sep 17 00:00:00 2001
From: Moritz Firsching <firsching@google.com>
Date: Mon, 15 Jan 2024 13:43:01 +0100
Subject: [PATCH] disable tooling test when not JPEGXL_ENABLE_TOOLS

---
 tools/conformance/CMakeLists.txt | 25 ++++++++++++++-----------
 1 file changed, 14 insertions(+), 11 deletions(-)

diff --git a/tools/conformance/CMakeLists.txt b/tools/conformance/CMakeLists.txt
index 5766612abf9..36249048c59 100644
--- a/tools/conformance/CMakeLists.txt
+++ b/tools/conformance/CMakeLists.txt
@@ -4,15 +4,18 @@
 # license that can be found in the LICENSE file.
 
 if(BUILD_TESTING AND CMAKE_EXECUTABLE_SUFFIX STREQUAL "")
-# Script to validate the tooling.
-find_program (BASH_PROGRAM bash)
-if(BASH_PROGRAM)
-  add_test(
-    NAME conformance_tooling_test
-    COMMAND
-        ${BASH_PROGRAM} ${CMAKE_CURRENT_SOURCE_DIR}/tooling_test.sh
-        ${CMAKE_BINARY_DIR} ${JPEGXL_TEST_DATA_PATH})
-  # Skip the test if dependencies are not available.
-  set_tests_properties(conformance_tooling_test PROPERTIES SKIP_RETURN_CODE 254)
-endif()
+  # Script to validate the tooling.
+  # Only add it when djxl being build.
+  if(JPEGXL_ENABLE_TOOLS)
+    find_program (BASH_PROGRAM bash)
+    if(BASH_PROGRAM)
+      add_test(
+        NAME conformance_tooling_test
+        COMMAND
+            ${BASH_PROGRAM} ${CMAKE_CURRENT_SOURCE_DIR}/tooling_test.sh
+            ${CMAKE_BINARY_DIR} ${JPEGXL_TEST_DATA_PATH})
+      # Skip the test if dependencies are not available.
+      set_tests_properties(conformance_tooling_test PROPERTIES SKIP_RETURN_CODE 254)
+    endif() # BASH_PROGRAM
+  endif() # JPEGXL_ENABLE_TOOLS
 endif() # BUILD_TESTING