[libc++] Remove LIBCXX_EXECUTOR and LIBCXXABI_EXECUTOR (#79886)

Those were deprecated in LLVM 18 and their removal was planned for LLVM 19.

libcxx/cmake/caches/AndroidNDK.cmake

@@ -35,7 +35,3 @@ set(CMAKE_CXX_COMPILER_WORKS ON CACHE BOOL "")
 # them.
 set(LIBCXX_TEST_CONFIG "llvm-libc++-android-ndk.cfg.in" CACHE STRING "")
 set(LIBCXXABI_TEST_CONFIG "llvm-libc++abi-android-ndk.cfg.in" CACHE STRING "")
-
-# CMAKE_SOURCE_DIR refers to the "<monorepo>/runtimes" directory.
-set(LIBCXX_EXECUTOR "${CMAKE_SOURCE_DIR}/../libcxx/utils/adb_run.py" CACHE STRING "")
-set(LIBCXXABI_EXECUTOR "${LIBCXX_EXECUTOR}" CACHE STRING "")

libcxx/docs/ReleaseNotes/19.rst

@@ -51,8 +51,6 @@ Improvements and New Features
 Deprecations and Removals
 -------------------------
 
-- TODO: The ``LIBCXX_EXECUTOR`` CMake variables have been removed.
-
 - TODO: The ``LIBCXX_ENABLE_ASSERTIONS`` CMake variable that was used to enable the safe mode has been deprecated and setting
   it triggers an error; use the ``LIBCXX_HARDENING_MODE`` CMake variable with the value ``extensive`` instead. Similarly,
   the ``_LIBCPP_ENABLE_ASSERTIONS`` macro has been deprecated (setting it to ``1`` still enables the extensive mode in
@@ -98,4 +96,5 @@ TODO
 Build System Changes
 --------------------
 
-TODO
+- The ``LIBCXX_EXECUTOR`` and ``LIBCXXABI_EXECUTOR`` CMake variables have been removed. Please
+  set ``LIBCXX_TEST_PARAMS`` to ``executor=<...>`` instead.

libcxx/test/CMakeLists.txt

@@ -10,11 +10,6 @@ endif()
 set(AUTO_GEN_COMMENT "## Autogenerated by libcxx configuration.\n# Do not edit!")
 set(SERIALIZED_LIT_PARAMS "# Lit parameters serialized here for llvm-lit to pick them up\n")
 
-if (LIBCXX_EXECUTOR)
-  message(DEPRECATION "LIBCXX_EXECUTOR is deprecated, please add executor=... to LIBCXX_TEST_PARAMS")
-  serialize_lit_string_param(SERIALIZED_LIT_PARAMS executor "${LIBCXX_EXECUTOR}")
-endif()
-
 if (NOT LIBCXX_ENABLE_EXCEPTIONS)
   serialize_lit_param(SERIALIZED_LIT_PARAMS enable_exceptions False)
 endif()

libcxx/utils/ci/run-buildbot

@@ -758,7 +758,7 @@ android-ndk-*)
     # level. When tests are run against a device with a newer API level, test
     # programs can be built for any supported API level, but building for the
     # newest API (i.e. the system image's API) is probably the most interesting.
-    PARAMS="target_triple=$(triple_of_arch ${ARCH})$(api_of_emu_img ${ANDROID_EMU_IMG})"
+    PARAMS="executor=${MONOREPO_ROOT}/libcxx/utils/adb_run.py;target_triple=$(triple_of_arch ${ARCH})$(api_of_emu_img ${ANDROID_EMU_IMG})"
     generate-cmake-android -C "${MONOREPO_ROOT}/runtimes/cmake/android/Arch-${ARCH}.cmake" \
                            -C "${MONOREPO_ROOT}/libcxx/cmake/caches/AndroidNDK.cmake" \
                            -DCMAKE_SYSROOT=/opt/android/ndk/sysroot \

libcxxabi/test/CMakeLists.txt

@@ -24,11 +24,6 @@ endif()
 set(AUTO_GEN_COMMENT "## Autogenerated by libcxxabi configuration.\n# Do not edit!")
 set(SERIALIZED_LIT_PARAMS "# Lit parameters serialized here for llvm-lit to pick them up\n")
 
-if (LIBCXXABI_EXECUTOR)
-  message(DEPRECATION "LIBCXXABI_EXECUTOR is deprecated, please add executor=... to LIBCXXABI_TEST_PARAMS")
-  serialize_lit_string_param(SERIALIZED_LIT_PARAMS executor "${LIBCXXABI_EXECUTOR}")
-endif()
-
 if (NOT LIBCXXABI_ENABLE_EXCEPTIONS)
   serialize_lit_param(SERIALIZED_LIT_PARAMS enable_exceptions False)
 endif()