[llvm] [libcxx] [libc++][modules] Removes module testing. (PR #76083)
Mark de Wever via llvm-commits
llvm-commits at lists.llvm.org
Tue Jan 9 10:16:57 PST 2024
https://github.com/mordante updated https://github.com/llvm/llvm-project/pull/76083
>From 9ff0a5f90817b6501d12cca6ad67591a97080dcc Mon Sep 17 00:00:00 2001
From: Mark de Wever <koraq at xs4all.nl>
Date: Wed, 20 Dec 2023 18:32:39 +0100
Subject: [PATCH] [libc++][modules] Removes module testing.
This removes the entire modules testing infrastructure.
The current infrastructure uses CMake to generate the std and std.compat
module. This requires quite a bit of plumbing and uses CMake. Since
CMake introduced module support in CMake 3.26, modules have a higher
CMake requirement than the rest of the LLVM project. (The LLVM project
requires 3.20.) The main motivation for this approach was how libc++
generated its modules. Every header had its own module partition. This
was changed to improve performance and now only two modules remain.
The code to build these can be manually crafted.
A followup patch will reenable testing modules, using a different
approach.
---
.github/workflows/libcxx-build-and-test.yaml | 8 --
libcxx/CMakeLists.txt | 15 +---
libcxx/cmake/caches/Generic-cxx26.cmake | 1 -
.../Generic-hardening-mode-extensive.cmake | 1 -
.../cmake/caches/Generic-no-exceptions.cmake | 1 -
.../caches/Generic-no-experimental.cmake | 1 -
.../cmake/caches/Generic-no-filesystem.cmake | 1 -
.../caches/Generic-no-localization.cmake | 1 -
.../caches/Generic-no-random_device.cmake | 1 -
libcxx/cmake/caches/Generic-no-threads.cmake | 1 -
libcxx/cmake/caches/Generic-no-tzdb.cmake | 1 -
libcxx/cmake/caches/Generic-no-unicode.cmake | 1 -
.../caches/Generic-no-wide-characters.cmake | 1 -
libcxx/docs/Modules.rst | 2 +-
libcxx/docs/ReleaseNotes/18.rst | 4 +
libcxx/modules/CMakeLists.txt | 28 ------
libcxx/modules/CMakeLists.txt.in | 86 -------------------
libcxx/test/CMakeLists.txt | 25 ------
libcxx/test/configs/cmake-bridge.cfg.in | 7 --
libcxx/test/lit.local.cfg | 83 ------------------
libcxx/test/std/modules/std.compat.pass.cpp | 4 +-
libcxx/test/std/modules/std.pass.cpp | 4 +-
libcxx/utils/ci/Dockerfile | 11 ---
libcxx/utils/ci/buildkite-pipeline.yml | 2 -
libcxx/utils/ci/run-buildbot | 10 ---
libcxx/utils/libcxx/test/features.py | 1 -
libcxx/utils/libcxx/test/modules.py | 3 +-
27 files changed, 13 insertions(+), 291 deletions(-)
delete mode 100644 libcxx/modules/CMakeLists.txt.in
delete mode 100644 libcxx/test/lit.local.cfg
diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index 985790a0ee2361e..4dba7ea147283e9 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -35,7 +35,6 @@ concurrency:
env:
- CMAKE: "/opt/bin/cmake"
# LLVM POST-BRANCH bump version
# LLVM POST-BRANCH add compiler test for ToT - 1, e.g. "Clang 17"
# LLVM RELEASE bump remove compiler ToT - 3, e.g. "Clang 15"
@@ -170,24 +169,18 @@ jobs:
'bootstrapping-build'
]
machine: [ 'libcxx-runners-8-set' ]
- std_modules: [ 'OFF' ]
include:
- config: 'generic-cxx26'
machine: libcxx-runners-8-set
- std_modules: 'ON'
- config: 'generic-asan'
machine: libcxx-runners-8-set
- std_modules: 'OFF'
- config: 'generic-tsan'
machine: libcxx-runners-8-set
- std_modules: 'OFF'
- config: 'generic-ubsan'
machine: libcxx-runners-8-set
- std_modules: 'OFF'
# Use a larger machine for MSAN to avoid timeout and memory allocation issues.
- config: 'generic-msan'
machine: libcxx-runners-8-set
- std_modules: 'OFF'
runs-on: ${{ matrix.machine }}
steps:
- uses: actions/checkout at v4
@@ -197,7 +190,6 @@ jobs:
CC: clang-18
CXX: clang++-18
ENABLE_CLANG_TIDY: "OFF"
- ENABLE_STD_MODULES: ${{ matrix.std_modules }}
- uses: actions/upload-artifact at v3
if: always()
with:
diff --git a/libcxx/CMakeLists.txt b/libcxx/CMakeLists.txt
index 75cb63222da35c5..0ab900e7df3c51e 100644
--- a/libcxx/CMakeLists.txt
+++ b/libcxx/CMakeLists.txt
@@ -117,12 +117,6 @@ option(LIBCXX_ENABLE_VENDOR_AVAILABILITY_ANNOTATIONS
the shared library they shipped should turn this on and see `include/__availability`
for more details." OFF)
option(LIBCXX_ENABLE_CLANG_TIDY "Whether to compile and run clang-tidy checks" OFF)
-# TODO MODULES Remove this option and test for the requirements (CMake/Clang) instead.
-option(LIBCXX_ENABLE_STD_MODULES
- "Whether to enable the building the C++23 `std` module. This feature is
- experimental and has additional dependencies. Only enable this when
- interested in testing or developing this module. See
- https://libcxx.llvm.org/Modules.html for more information." OFF)
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
set(LIBCXX_DEFAULT_TEST_CONFIG "llvm-libc++-shared-gcc.cfg.in")
@@ -772,7 +766,6 @@ config_define_if_not(LIBCXX_ENABLE_RANDOM_DEVICE _LIBCPP_HAS_NO_RANDOM_DEVICE)
config_define_if_not(LIBCXX_ENABLE_LOCALIZATION _LIBCPP_HAS_NO_LOCALIZATION)
config_define_if_not(LIBCXX_ENABLE_UNICODE _LIBCPP_HAS_NO_UNICODE)
config_define_if_not(LIBCXX_ENABLE_WIDE_CHARACTERS _LIBCPP_HAS_NO_WIDE_CHARACTERS)
-config_define_if_not(LIBCXX_ENABLE_STD_MODULES _LIBCPP_HAS_NO_STD_MODULES)
config_define_if_not(LIBCXX_ENABLE_TIME_ZONE_DATABASE _LIBCPP_HAS_NO_TIME_ZONE_DATABASE)
config_define_if_not(LIBCXX_ENABLE_VENDOR_AVAILABILITY_ANNOTATIONS _LIBCPP_HAS_NO_VENDOR_AVAILABILITY_ANNOTATIONS)
@@ -856,9 +849,7 @@ endfunction()
add_subdirectory(include)
add_subdirectory(src)
add_subdirectory(utils)
-if (LIBCXX_ENABLE_STD_MODULES)
- add_subdirectory(modules)
-endif()
+add_subdirectory(modules)
set(LIBCXX_TEST_DEPS "cxx_experimental")
@@ -866,9 +857,7 @@ if (LIBCXX_ENABLE_CLANG_TIDY)
list(APPEND LIBCXX_TEST_DEPS cxx-tidy)
endif()
-if (LIBCXX_ENABLE_STD_MODULES)
- list(APPEND LIBCXX_TEST_DEPS generate-cxx-modules generate-test-module-std)
-endif()
+list(APPEND LIBCXX_TEST_DEPS generate-cxx-modules)
if (LIBCXX_INCLUDE_BENCHMARKS)
add_subdirectory(benchmarks)
diff --git a/libcxx/cmake/caches/Generic-cxx26.cmake b/libcxx/cmake/caches/Generic-cxx26.cmake
index f48d72d493c2f51..6ba9482af57851b 100644
--- a/libcxx/cmake/caches/Generic-cxx26.cmake
+++ b/libcxx/cmake/caches/Generic-cxx26.cmake
@@ -1,3 +1,2 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_TEST_PARAMS "std=c++26" CACHE STRING "")
set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/libcxx/cmake/caches/Generic-hardening-mode-extensive.cmake b/libcxx/cmake/caches/Generic-hardening-mode-extensive.cmake
index 0487377d4e9ba2c..72263dfd84635b5 100644
--- a/libcxx/cmake/caches/Generic-hardening-mode-extensive.cmake
+++ b/libcxx/cmake/caches/Generic-hardening-mode-extensive.cmake
@@ -1,2 +1 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_HARDENING_MODE "extensive" CACHE STRING "")
diff --git a/libcxx/cmake/caches/Generic-no-exceptions.cmake b/libcxx/cmake/caches/Generic-no-exceptions.cmake
index f405f7fe9937523..f0dffef60dba082 100644
--- a/libcxx/cmake/caches/Generic-no-exceptions.cmake
+++ b/libcxx/cmake/caches/Generic-no-exceptions.cmake
@@ -1,3 +1,2 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
set(LIBCXXABI_ENABLE_EXCEPTIONS OFF CACHE BOOL "")
diff --git a/libcxx/cmake/caches/Generic-no-experimental.cmake b/libcxx/cmake/caches/Generic-no-experimental.cmake
index fe14e7afed7b962..f33ed01418990bf 100644
--- a/libcxx/cmake/caches/Generic-no-experimental.cmake
+++ b/libcxx/cmake/caches/Generic-no-experimental.cmake
@@ -1,3 +1,2 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_TEST_PARAMS "enable_experimental=False" CACHE STRING "")
set(LIBCXXABI_TEST_PARAMS "${LIBCXX_TEST_PARAMS}" CACHE STRING "")
diff --git a/libcxx/cmake/caches/Generic-no-filesystem.cmake b/libcxx/cmake/caches/Generic-no-filesystem.cmake
index db62f86854d941a..4000f3a3e8ef23b 100644
--- a/libcxx/cmake/caches/Generic-no-filesystem.cmake
+++ b/libcxx/cmake/caches/Generic-no-filesystem.cmake
@@ -1,2 +1 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_ENABLE_FILESYSTEM OFF CACHE BOOL "")
diff --git a/libcxx/cmake/caches/Generic-no-localization.cmake b/libcxx/cmake/caches/Generic-no-localization.cmake
index 54a7ec3f1f5b36c..79d6b44c7139aaf 100644
--- a/libcxx/cmake/caches/Generic-no-localization.cmake
+++ b/libcxx/cmake/caches/Generic-no-localization.cmake
@@ -1,2 +1 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_ENABLE_LOCALIZATION OFF CACHE BOOL "")
diff --git a/libcxx/cmake/caches/Generic-no-random_device.cmake b/libcxx/cmake/caches/Generic-no-random_device.cmake
index adfa2458a8edf6d..e9b4cc60cc80eac 100644
--- a/libcxx/cmake/caches/Generic-no-random_device.cmake
+++ b/libcxx/cmake/caches/Generic-no-random_device.cmake
@@ -1,2 +1 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_ENABLE_RANDOM_DEVICE OFF CACHE BOOL "")
diff --git a/libcxx/cmake/caches/Generic-no-threads.cmake b/libcxx/cmake/caches/Generic-no-threads.cmake
index 2aeab22915e00cc..616baef1be7bef1 100644
--- a/libcxx/cmake/caches/Generic-no-threads.cmake
+++ b/libcxx/cmake/caches/Generic-no-threads.cmake
@@ -1,4 +1,3 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_ENABLE_THREADS OFF CACHE BOOL "")
set(LIBCXXABI_ENABLE_THREADS OFF CACHE BOOL "")
set(LIBCXX_ENABLE_MONOTONIC_CLOCK OFF CACHE BOOL "")
diff --git a/libcxx/cmake/caches/Generic-no-tzdb.cmake b/libcxx/cmake/caches/Generic-no-tzdb.cmake
index c5dc882e584428c..27c826edfecffbb 100644
--- a/libcxx/cmake/caches/Generic-no-tzdb.cmake
+++ b/libcxx/cmake/caches/Generic-no-tzdb.cmake
@@ -1,2 +1 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_ENABLE_TIME_ZONE_DATABASE OFF CACHE BOOL "")
diff --git a/libcxx/cmake/caches/Generic-no-unicode.cmake b/libcxx/cmake/caches/Generic-no-unicode.cmake
index 880e2d502ad91b1..01160bf218981a2 100644
--- a/libcxx/cmake/caches/Generic-no-unicode.cmake
+++ b/libcxx/cmake/caches/Generic-no-unicode.cmake
@@ -1,2 +1 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_ENABLE_UNICODE OFF CACHE BOOL "")
diff --git a/libcxx/cmake/caches/Generic-no-wide-characters.cmake b/libcxx/cmake/caches/Generic-no-wide-characters.cmake
index 5036f6abd52e832..728d41086a38673 100644
--- a/libcxx/cmake/caches/Generic-no-wide-characters.cmake
+++ b/libcxx/cmake/caches/Generic-no-wide-characters.cmake
@@ -1,2 +1 @@
-set(LIBCXX_ENABLE_STD_MODULES ON CACHE BOOL "") # TODO MODULES Remove when enabled automatically.
set(LIBCXX_ENABLE_WIDE_CHARACTERS OFF CACHE BOOL "")
diff --git a/libcxx/docs/Modules.rst b/libcxx/docs/Modules.rst
index 5099e6095582cf6..1998cd9d1d267ed 100644
--- a/libcxx/docs/Modules.rst
+++ b/libcxx/docs/Modules.rst
@@ -115,7 +115,7 @@ directory. First libc++ needs to be build with module support enabled.
$ git clone https://github.com/llvm/llvm-project.git
$ cd llvm-project
$ mkdir build
- $ cmake -G Ninja -S runtimes -B build -DLIBCXX_ENABLE_STD_MODULES=ON -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind"
+ $ cmake -G Ninja -S runtimes -B build -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind"
$ ninja -C build
The above ``build`` directory will be referred to as ``<build>`` in the
diff --git a/libcxx/docs/ReleaseNotes/18.rst b/libcxx/docs/ReleaseNotes/18.rst
index 5df6242e52317af..3d5f1a5726d14c0 100644
--- a/libcxx/docs/ReleaseNotes/18.rst
+++ b/libcxx/docs/ReleaseNotes/18.rst
@@ -89,6 +89,10 @@ Improvements and New Features
- The ``_LIBCPP_ENABLE_CXX20_REMOVED_SHARED_PTR_UNIQUE`` macro has been added to make
the function ``std::shared_ptr<...>::unique()`` available.
+- The cmake option ``LIBCXX_ENABLE_STD_MODULES`` has been removed. The test
+ infrastructure no longer depends on a modern CMake, it works with the minimal
+ required LLVM version (3.20.0).
+
Deprecations and Removals
-------------------------
diff --git a/libcxx/modules/CMakeLists.txt b/libcxx/modules/CMakeLists.txt
index fae6448a7eec84b..31fbadf449f7734 100644
--- a/libcxx/modules/CMakeLists.txt
+++ b/libcxx/modules/CMakeLists.txt
@@ -1,8 +1,3 @@
-if (CMAKE_VERSION VERSION_LESS 3.26)
- message(WARNING "The libc++ modules won't be available because the CMake version is too old. Update to CMake 3.26 or later.")
- return()
-endif()
-
# The headers of Table 24: C++ library headers [tab:headers.cpp]
# and the headers of Table 25: C++ headers for C library facilities [tab:headers.cpp.c]
set(LIBCXX_MODULE_STD_SOURCES
@@ -142,28 +137,6 @@ set(LIBCXX_MODULE_STD_COMPAT_SOURCES
std.compat/cwctype.inc
)
-# TODO MODULES the CMakeLists.txt in the install directory is only temporary
-# When that is removed the configured file can use the substitution
-# LIBCXX_GENERATED_INCLUDE_TARGET_DIR avoiding this set.
-# Also clean up the parts needed to generate the install version.
-# - LIBCXX_GENERATED_INCLUDE_DIR contains the libc++ headers
-# - LIBCXX_GENERATED_INCLUDE_TARGET_DIR contains the libc++ site config
-if ("${LIBCXX_GENERATED_INCLUDE_DIR}" STREQUAL "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR}")
- # This typically happens when the target is not installed.
- set(LIBCXX_CONFIGURED_INCLUDE_DIRS "${LIBCXX_GENERATED_INCLUDE_DIR}")
-else()
- # It's important that the arch directory be included first so that its header files
- # which interpose on the default include dir be included instead of the default ones.
- set(LIBCXX_CONFIGURED_INCLUDE_DIRS
- "${LIBCXX_GENERATED_INCLUDE_TARGET_DIR};${LIBCXX_GENERATED_INCLUDE_DIR}"
- )
-endif()
-configure_file(
- "CMakeLists.txt.in"
- "${LIBCXX_GENERATED_MODULE_DIR}/CMakeLists.txt"
- @ONLY
-)
-
set(LIBCXX_MODULE_STD_INCLUDE_SOURCES)
foreach(file ${LIBCXX_MODULE_STD_SOURCES})
set(
@@ -193,7 +166,6 @@ configure_file(
)
set(_all_modules)
-list(APPEND _all_modules "${LIBCXX_GENERATED_MODULE_DIR}/CMakeLists.txt")
list(APPEND _all_modules "${LIBCXX_GENERATED_MODULE_DIR}/std.cppm")
list(APPEND _all_modules "${LIBCXX_GENERATED_MODULE_DIR}/std.compat.cppm")
foreach(file ${LIBCXX_MODULE_STD_SOURCES} ${LIBCXX_MODULE_STD_COMPAT_SOURCES})
diff --git a/libcxx/modules/CMakeLists.txt.in b/libcxx/modules/CMakeLists.txt.in
deleted file mode 100644
index 98168673ebfe9c6..000000000000000
--- a/libcxx/modules/CMakeLists.txt.in
+++ /dev/null
@@ -1,86 +0,0 @@
-cmake_minimum_required(VERSION 3.26)
-
-project(libc++-modules LANGUAGES CXX)
-
-# Enable CMake's module support
-if(CMAKE_VERSION VERSION_LESS "3.28.0")
- if(CMAKE_VERSION VERSION_LESS "3.27.0")
- set(CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API "2182bf5c-ef0d-489a-91da-49dbc3090d2a")
- else()
- set(CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API "aa1f7df0-828a-4fcd-9afc-2dc80491aca7")
- endif()
- set(CMAKE_EXPERIMENTAL_CXX_MODULE_DYNDEP 1)
-else()
- cmake_policy(VERSION 3.28)
-endif()
-
-# Default to C++ extensions being off. Libc++'s modules support have trouble
-# with extensions right now.
-set(CMAKE_CXX_EXTENSIONS OFF)
-
-# Propagates the CMake options to the modules.
-#
-# This uses the std module hard-coded since the std.compat module does not
-# depend on these flags.
-macro(compile_define_if_not condition def)
- if (NOT ${condition})
- target_compile_definitions(std PRIVATE ${def})
- endif()
-endmacro()
-macro(compile_define_if condition def)
- if (${condition})
- target_compile_definitions(std PRIVATE ${def})
- endif()
-endmacro()
-
-### STD
-
-add_library(std)
-target_sources(std
- PUBLIC FILE_SET cxx_modules TYPE CXX_MODULES FILES
- std.cppm
-)
-
-target_include_directories(std SYSTEM PRIVATE @LIBCXX_CONFIGURED_INCLUDE_DIRS@)
-
-if (NOT @LIBCXX_ENABLE_EXCEPTIONS@)
- target_compile_options(std PUBLIC -fno-exceptions)
-endif()
-
-target_compile_options(std
- PUBLIC
- -nostdinc++
- -Wno-reserved-module-identifier
- -Wno-reserved-user-defined-literal
- @LIBCXX_COMPILE_FLAGS@
-)
-set_target_properties(std
- PROPERTIES
- OUTPUT_NAME "c++std"
-)
-
-### STD.COMPAT
-
-add_library(std.compat)
-target_sources(std.compat
- PUBLIC FILE_SET cxx_modules TYPE CXX_MODULES FILES
- std.compat.cppm
-)
-
-target_include_directories(std.compat SYSTEM PRIVATE @LIBCXX_CONFIGURED_INCLUDE_DIRS@)
-
-if (NOT @LIBCXX_ENABLE_EXCEPTIONS@)
- target_compile_options(std.compat PUBLIC -fno-exceptions)
-endif()
-
-target_compile_options(std.compat
- PUBLIC
- -nostdinc++
- -Wno-reserved-module-identifier
- -Wno-reserved-user-defined-literal
- @LIBCXX_COMPILE_FLAGS@
-)
-set_target_properties(std.compat
- PROPERTIES
- OUTPUT_NAME "c++std.compat"
-)
diff --git a/libcxx/test/CMakeLists.txt b/libcxx/test/CMakeLists.txt
index 48dd233462ab3b7..52620fc55feeb7e 100644
--- a/libcxx/test/CMakeLists.txt
+++ b/libcxx/test/CMakeLists.txt
@@ -87,31 +87,6 @@ if (LIBCXX_INCLUDE_TESTS)
${CMAKE_CURRENT_BINARY_DIR}
DEPENDS cxx-test-depends)
- if(LIBCXX_ENABLE_STD_MODULES)
- # Generates the modules used in the test.
- # Note the test will regenerate this with the proper setting
- # - the right DCMAKE_CXX_STANDARD
- # - the right test compilation flags
- # Since modules depend on these flags there currently is no way to
- # avoid generating these for the tests. The advantage of the
- # pre generation is that less build information needs to be shared
- # in the bridge.
- add_custom_command(
- OUTPUT "${CMAKE_BINARY_DIR}/test/__config_module__/CMakeCache.txt"
- COMMAND
- ${CMAKE_COMMAND}
- "-G${CMAKE_GENERATOR}"
- "-DCMAKE_MAKE_PROGRAM=${CMAKE_MAKE_PROGRAM}"
- "-B${CMAKE_BINARY_DIR}/test/__config_module__"
- "-H${LIBCXX_GENERATED_MODULE_DIR}"
- "-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
- "-DCMAKE_CXX_STANDARD=23"
- "-DCMAKE_EXPORT_COMPILE_COMMANDS=ON"
- )
- add_custom_target(generate-test-module-std
- DEPENDS "${CMAKE_BINARY_DIR}/test/__config_module__/CMakeCache.txt"
- COMMENT "Builds generic module std.")
- endif()
endif()
if (LIBCXX_GENERATE_COVERAGE)
diff --git a/libcxx/test/configs/cmake-bridge.cfg.in b/libcxx/test/configs/cmake-bridge.cfg.in
index 0e3c3040c964462..72b2ddf378bb644 100644
--- a/libcxx/test/configs/cmake-bridge.cfg.in
+++ b/libcxx/test/configs/cmake-bridge.cfg.in
@@ -31,10 +31,3 @@ config.substitutions.append(('%{target-include}', '@LIBCXX_GENERATED_INCLUDE_TAR
config.substitutions.append(('%{lib}', '@LIBCXX_LIBRARY_DIR@'))
config.substitutions.append(('%{module}', '@LIBCXX_GENERATED_MODULE_DIR@'))
config.substitutions.append(('%{test-tools}', '@LIBCXX_TEST_TOOLS_PATH@'))
-
-# The test needs to manually rebuild the module. The compiler flags used in the
-# test need to be the same as the compiler flags used to generate the module.
-# In the future, when CMake can generated modules this may no longer be
-# necessary.
-# TODO MODULES whether it's possible to remove this substitution.
-config.substitutions.append(('%{cmake}', '@CMAKE_COMMAND@'))
diff --git a/libcxx/test/lit.local.cfg b/libcxx/test/lit.local.cfg
deleted file mode 100644
index 1ee9086ee22e3c5..000000000000000
--- a/libcxx/test/lit.local.cfg
+++ /dev/null
@@ -1,83 +0,0 @@
-# ===----------------------------------------------------------------------===##
-#
-# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-# See https://llvm.org/LICENSE.txt for license information.
-# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-#
-# ===----------------------------------------------------------------------===##
-
-# This configuration builds the C++23 std module.
-# It is build when the current lit configuration supports modules.
-#
-# TODO MODULES Evaluate whether this file can be removed when CMake supports
-# modules in libc++.
-
-import os
-import site
-import subprocess
-import libcxx.test.params, libcxx.test.config, libcxx.test.dsl
-
-
-def getSubstitution(substitution, config):
- for orig, replacement in config.substitutions:
- if orig == substitution:
- return replacement
- raise ValueError("Substitution {} is not in the config.".format(substitution))
-
-
-def appendToSubstitution(substitutions, key, value):
- return [(k, v + " " + value) if k == key else (k, v) for (k, v) in substitutions]
-
-
-std = getSubstitution("%{cxx_std}", config)
-if std == "cxx26":
- std = "26"
-elif std == "cxx23":
- std = "23"
-elif std == "cxx20":
- std = "20"
-else:
- std = ""
-
-if (
- std
- and not "libcpp-has-no-std-modules" in config.available_features
- and not "clang-modules-build" in config.available_features
-):
- build = os.path.join(config.test_exec_root, "__config_module__")
- config.substitutions = appendToSubstitution(
- config.substitutions,
- "%{compile_flags}",
- "-fprebuilt-module-path="
- + os.path.join(config.test_exec_root, "__config_module__/CMakeFiles/std.dir"),
- )
-
- cmake = getSubstitution("%{cmake}", config)
- flags = getSubstitution("%{flags}", config)
- if "c++experimental" in config.available_features:
- flags = f"{flags} -D_LIBCPP_ENABLE_EXPERIMENTAL"
-
- subprocess.check_call(
- [cmake, f"-DCMAKE_CXX_STANDARD={std}", f"-DCMAKE_CXX_FLAGS={flags}", build],
- env={},
- )
- subprocess.check_call([cmake, "--build", build, "--", "-v"], env={})
- config.substitutions = appendToSubstitution(
- config.substitutions,
- "%{link_flags}",
- os.path.join(build, "libc++std.a"),
- )
-
- config.substitutions = appendToSubstitution(
- config.substitutions,
- "%{compile_flags}",
- "-fprebuilt-module-path="
- + os.path.join(
- config.test_exec_root, "__config_module__/CMakeFiles/std.compat.dir"
- ),
- )
- config.substitutions = appendToSubstitution(
- config.substitutions,
- "%{link_flags}",
- os.path.join(build, "libc++std.compat.a"),
- )
diff --git a/libcxx/test/std/modules/std.compat.pass.cpp b/libcxx/test/std/modules/std.compat.pass.cpp
index a33ed3b6b64533a..ba75f8e4010027d 100644
--- a/libcxx/test/std/modules/std.compat.pass.cpp
+++ b/libcxx/test/std/modules/std.compat.pass.cpp
@@ -7,10 +7,10 @@
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
-
-// UNSUPPORTED: libcpp-has-no-std-modules
// UNSUPPORTED: clang-modules-build
+// XFAIL: *
+
// A minimal test to validate import works.
import std.compat;
diff --git a/libcxx/test/std/modules/std.pass.cpp b/libcxx/test/std/modules/std.pass.cpp
index 8ec3ce27322b743..a018e42a2658917 100644
--- a/libcxx/test/std/modules/std.pass.cpp
+++ b/libcxx/test/std/modules/std.pass.cpp
@@ -7,10 +7,10 @@
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
-
-// UNSUPPORTED: libcpp-has-no-std-modules
// UNSUPPORTED: clang-modules-build
+// XFAIL: *
+
// A minimal test to validate import works.
import std;
diff --git a/libcxx/utils/ci/Dockerfile b/libcxx/utils/ci/Dockerfile
index e4bda4f06742c1c..225de937cc869a0 100644
--- a/libcxx/utils/ci/Dockerfile
+++ b/libcxx/utils/ci/Dockerfile
@@ -152,17 +152,6 @@ RUN <<EOF
wget https://github.com/Kitware/CMake/releases/download/v3.21.1/cmake-3.21.1-linux-x86_64.sh -O /tmp/install-cmake.sh
sudo bash /tmp/install-cmake.sh --prefix=/usr --exclude-subdir --skip-license
rm /tmp/install-cmake.sh
-
- # Install a newer CMake for modules
- # TODO Remove the duplicated installation when all runtimes can be build with CMake 3.28.
- wget https://github.com/Kitware/CMake/releases/download/v3.27.1/cmake-3.27.1-linux-x86_64.sh -O /tmp/install-cmake.sh
- sudo bash /tmp/install-cmake.sh --prefix=/opt --exclude-subdir --skip-license
- rm /tmp/install-cmake.sh
-
- wget https://github.com/Kitware/CMake/releases/download/v3.28.0-rc4/cmake-3.28.0-rc4-linux-x86_64.sh -O /tmp/install-cmake.sh
- sudo mkdir /opt/cmake-3.28
- sudo bash /tmp/install-cmake.sh --prefix=/opt/cmake-3.28 --exclude-subdir --skip-license
- rm /tmp/install-cmake.sh
EOF
# ===----------------------------------------------------------------------===##
diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
index a48f8524ef63c44..a7c44dab7093911 100644
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -48,7 +48,6 @@ environment_definitions:
CLANG_CRASH_DIAGNOSTICS_DIR: "crash_diagnostics"
CC: clang-${LLVM_HEAD_VERSION}
CXX: clang++-${LLVM_HEAD_VERSION}
- CMAKE: /opt/bin/cmake
_absolute_path_clang: &absolute_path_clang
# Note modules require and absolute path for clang-scan-deps
@@ -262,7 +261,6 @@ steps:
env:
CC: clang16
CXX: clang++16
- ENABLE_STD_MODULES: 'Off'
agents:
queue: libcxx-builders
os: freebsd
diff --git a/libcxx/utils/ci/run-buildbot b/libcxx/utils/ci/run-buildbot
index ed2bc2a14f17d64..ba5c3dd8e5bdc63 100755
--- a/libcxx/utils/ci/run-buildbot
+++ b/libcxx/utils/ci/run-buildbot
@@ -47,11 +47,6 @@ CLANG_FORMAT The clang-format binary to use when generating the format
ENABLE_CLANG_TIDY Whether to compile and run clang-tidy checks. This variable
is optional.
-ENABLE_STD_MODULES Whether to enable or disable building the C++23 std
- modules. This variable is optional.
- TODO MODULES remove when all supported compilers support
- modules.
-
EOF
}
@@ -120,10 +115,6 @@ if [ -z "${ENABLE_CLANG_TIDY}" ]; then
ENABLE_CLANG_TIDY=Off
fi
-if [ -n "${ENABLE_STD_MODULES}" ]; then
- ENABLE_STD_MODULES="-DLIBCXX_ENABLE_STD_MODULES=${ENABLE_STD_MODULES}"
-fi
-
function generate-cmake-base() {
echo "--- Generating CMake"
${CMAKE} \
@@ -136,7 +127,6 @@ function generate-cmake-base() {
-DLIBCXXABI_ENABLE_WERROR=YES \
-DLIBUNWIND_ENABLE_WERROR=YES \
-DLIBCXX_ENABLE_CLANG_TIDY=${ENABLE_CLANG_TIDY} \
- ${ENABLE_STD_MODULES} \
-DLLVM_LIT_ARGS="-sv --xunit-xml-output test-results.xml --timeout=1500 --time-tests" \
"${@}"
}
diff --git a/libcxx/utils/libcxx/test/features.py b/libcxx/utils/libcxx/test/features.py
index 77efbdf13103490..332def02980ca63 100644
--- a/libcxx/utils/libcxx/test/features.py
+++ b/libcxx/utils/libcxx/test/features.py
@@ -343,7 +343,6 @@ def _getAndroidDeviceApi(cfg):
"_LIBCPP_HAS_NO_WIDE_CHARACTERS": "no-wide-characters",
"_LIBCPP_HAS_NO_TIME_ZONE_DATABASE": "no-tzdb",
"_LIBCPP_HAS_NO_UNICODE": "libcpp-has-no-unicode",
- "_LIBCPP_HAS_NO_STD_MODULES": "libcpp-has-no-std-modules",
"_LIBCPP_PSTL_CPU_BACKEND_LIBDISPATCH": "libcpp-pstl-cpu-backend-libdispatch",
}
for macro, feature in macros.items():
diff --git a/libcxx/utils/libcxx/test/modules.py b/libcxx/utils/libcxx/test/modules.py
index bd19fac314dd9b5..9362d52cb72d2ca 100644
--- a/libcxx/utils/libcxx/test/modules.py
+++ b/libcxx/utils/libcxx/test/modules.py
@@ -118,9 +118,10 @@ def write_lit_configuration(self):
print(
f"""\
// UNSUPPORTED: c++03, c++11, c++14, c++17
-// UNSUPPORTED: libcpp-has-no-std-modules
// UNSUPPORTED: clang-modules-build
+// XFAIL: *
+
// REQUIRES: has-clang-tidy
// The GCC compiler flags are not always compatible with clang-tidy.
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