[libcxx-commits] [libcxx] [libc++] Run the Lit test suite against an installed version of the library (PR #96910)
Louis Dionne via libcxx-commits
libcxx-commits at lists.llvm.org
Thu Jul 18 13:52:17 PDT 2024
https://github.com/ldionne updated https://github.com/llvm/llvm-project/pull/96910
>From a45785ad8c338ad50f0b1662bf70729731d7b255 Mon Sep 17 00:00:00 2001
From: Louis Dionne <ldionne.2 at gmail.com>
Date: Wed, 26 Jun 2024 15:17:42 -0500
Subject: [PATCH] [libc++] Run the Lit test suite against an installed version
of the library
We always strive to test libc++ as close as possible to the way we are
actually shipping it. This was approximated reasonably well by setting
up the minimal driver flags when running the test suite, however we were
running the test suite against the library located in the build directory.
This patch improves the situation by installing the library (the headers,
the built library, modules, etc) into a fake location and then running
the test suite against that fake "installation root".
This should open the door to getting rid of the temporary copy of the
headers we make during the build process, however this is left for a
future improvement.
Note that this adds quite a bit of verbosity whenever running the test
suite because we install the headers beforehand every time. We should
be able to override this to silence it, however CMake doesn't currently
give us a way to do that, see https://gitlab.kitware.com/cmake/cmake/-/issues/26085.
---
libcxx/cmake/caches/Apple.cmake | 1 +
libcxx/modules/CMakeLists.txt | 1 -
libcxx/src/CMakeLists.txt | 2 -
libcxx/test/CMakeLists.txt | 56 +++++++++++++++++++
libcxx/test/configs/cmake-bridge.cfg.in | 8 +--
.../apple/system-install-properties.sh.cpp | 6 +-
libcxx/utils/ci/apple-install-libcxx.sh | 1 -
libcxx/utils/ci/run-buildbot | 13 -----
8 files changed, 63 insertions(+), 25 deletions(-)
diff --git a/libcxx/cmake/caches/Apple.cmake b/libcxx/cmake/caches/Apple.cmake
index 8768653e620ad..7dbe90fb351a9 100644
--- a/libcxx/cmake/caches/Apple.cmake
+++ b/libcxx/cmake/caches/Apple.cmake
@@ -1,4 +1,5 @@
set(CMAKE_BUILD_TYPE MinSizeRel CACHE STRING "")
+set(CMAKE_INSTALL_NAME_DIR "/usr/lib" CACHE STRING "")
set(CMAKE_POSITION_INDEPENDENT_CODE OFF CACHE BOOL "")
set(LIBCXX_USE_COMPILER_RT ON CACHE BOOL "")
diff --git a/libcxx/modules/CMakeLists.txt b/libcxx/modules/CMakeLists.txt
index 82cd7b66beb7a..d47d19a475531 100644
--- a/libcxx/modules/CMakeLists.txt
+++ b/libcxx/modules/CMakeLists.txt
@@ -202,7 +202,6 @@ add_custom_target(generate-cxx-modules
ALL DEPENDS
${_all_modules}
)
-add_dependencies(cxx-test-depends generate-cxx-modules)
# Configure the modules manifest.
# Use the relative path between the installation and the module in the json
diff --git a/libcxx/src/CMakeLists.txt b/libcxx/src/CMakeLists.txt
index 0ae58a10c879c..c912dd505ed3e 100644
--- a/libcxx/src/CMakeLists.txt
+++ b/libcxx/src/CMakeLists.txt
@@ -328,7 +328,6 @@ endif()
# Add a meta-target for both libraries.
add_custom_target(cxx DEPENDS ${LIBCXX_BUILD_TARGETS})
-add_dependencies(cxx-test-depends cxx)
set(LIBCXX_EXPERIMENTAL_SOURCES
experimental/keep.cpp
@@ -376,7 +375,6 @@ set_target_properties(cxx_experimental
)
cxx_add_common_build_flags(cxx_experimental)
target_compile_options(cxx_experimental PUBLIC -D_LIBCPP_ENABLE_EXPERIMENTAL)
-add_dependencies(cxx-test-depends cxx_experimental)
if (LIBCXX_INSTALL_SHARED_LIBRARY)
install(TARGETS cxx_shared
diff --git a/libcxx/test/CMakeLists.txt b/libcxx/test/CMakeLists.txt
index cdd1c2d90fbcf..3026834566598 100644
--- a/libcxx/test/CMakeLists.txt
+++ b/libcxx/test/CMakeLists.txt
@@ -7,6 +7,62 @@ if (NOT LIBCXX_CXX_ABI_LIBRARY_PATH)
"The path to libc++abi library.")
endif()
+# Install the library at a fake location so we can run the test suite against it.
+# This ensures that we run the test suite against a setup that matches what we ship
+# in production as closely as possible (in terms of file paths, rpaths, etc).
+set(LIBCXX_TESTING_INSTALL_PREFIX "${LIBCXX_BINARY_DIR}/test-suite-install")
+if (LIBCXX_CXX_ABI STREQUAL "libcxxabi")
+ add_custom_target(install-cxxabi-test-suite-prefix
+ DEPENDS cxxabi-headers
+ cxxabi
+ COMMAND ${CMAKE_COMMAND} -E make_directory "${LIBCXX_TESTING_INSTALL_PREFIX}"
+ COMMAND "${CMAKE_COMMAND}"
+ -DCMAKE_INSTALL_COMPONENT=cxxabi-headers
+ -DCMAKE_INSTALL_PREFIX="${LIBCXX_TESTING_INSTALL_PREFIX}"
+ -P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
+ COMMAND "${CMAKE_COMMAND}"
+ -DCMAKE_INSTALL_COMPONENT=cxxabi
+ -DCMAKE_INSTALL_PREFIX="${LIBCXX_TESTING_INSTALL_PREFIX}"
+ -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
+ add_dependencies(cxx-test-depends install-cxxabi-test-suite-prefix)
+endif()
+
+if (LIBCXXABI_USE_LLVM_UNWINDER AND TARGET unwind)
+ add_custom_target(install-unwind-test-suite-prefix
+ DEPENDS unwind-headers
+ unwind
+ COMMAND ${CMAKE_COMMAND} -E make_directory "${LIBCXX_TESTING_INSTALL_PREFIX}"
+ COMMAND "${CMAKE_COMMAND}"
+ -DCMAKE_INSTALL_COMPONENT=unwind-headers
+ -DCMAKE_INSTALL_PREFIX="${LIBCXX_TESTING_INSTALL_PREFIX}"
+ -P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
+ COMMAND "${CMAKE_COMMAND}"
+ -DCMAKE_INSTALL_COMPONENT=unwind
+ -DCMAKE_INSTALL_PREFIX="${LIBCXX_TESTING_INSTALL_PREFIX}"
+ -P "${CMAKE_BINARY_DIR}/cmake_install.cmake")
+ add_dependencies(cxx-test-depends install-unwind-test-suite-prefix)
+endif()
+
+add_custom_target(install-cxx-test-suite-prefix
+ DEPENDS cxx-headers
+ cxx
+ cxx_experimental
+ cxx-modules
+ COMMAND ${CMAKE_COMMAND} -E make_directory "${LIBCXX_TESTING_INSTALL_PREFIX}"
+ COMMAND "${CMAKE_COMMAND}"
+ -DCMAKE_INSTALL_COMPONENT=cxx-headers
+ -DCMAKE_INSTALL_PREFIX="${LIBCXX_TESTING_INSTALL_PREFIX}"
+ -P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
+ COMMAND "${CMAKE_COMMAND}"
+ -DCMAKE_INSTALL_COMPONENT=cxx-modules
+ -DCMAKE_INSTALL_PREFIX="${LIBCXX_TESTING_INSTALL_PREFIX}"
+ -P "${CMAKE_BINARY_DIR}/cmake_install.cmake"
+ COMMAND "${CMAKE_COMMAND}"
+ -DCMAKE_INSTALL_COMPONENT=cxx
+ -DCMAKE_INSTALL_PREFIX="${LIBCXX_TESTING_INSTALL_PREFIX}"
+ -P "${LIBCXX_BINARY_DIR}/cmake_install.cmake")
+add_dependencies(cxx-test-depends install-cxx-test-suite-prefix)
+
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")
diff --git a/libcxx/test/configs/cmake-bridge.cfg.in b/libcxx/test/configs/cmake-bridge.cfg.in
index 78d0cb5a25748..fe93e0bfa25e3 100644
--- a/libcxx/test/configs/cmake-bridge.cfg.in
+++ b/libcxx/test/configs/cmake-bridge.cfg.in
@@ -24,8 +24,8 @@ config.test_exec_root = os.path.join('@CMAKE_BINARY_DIR@', 'test')
# Add substitutions for bootstrapping the test suite configuration
config.substitutions.append(('%{libcxx-dir}', '@LIBCXX_SOURCE_DIR@'))
-config.substitutions.append(('%{include-dir}', '@LIBCXX_GENERATED_INCLUDE_DIR@'))
-config.substitutions.append(('%{target-include-dir}', '@LIBCXX_GENERATED_INCLUDE_TARGET_DIR@'))
-config.substitutions.append(('%{lib-dir}', '@LIBCXX_LIBRARY_DIR@'))
-config.substitutions.append(('%{module-dir}', '@LIBCXX_GENERATED_MODULE_DIR@'))
+config.substitutions.append(('%{include-dir}', '@LIBCXX_TESTING_INSTALL_PREFIX@/@LIBCXX_INSTALL_INCLUDE_DIR@'))
+config.substitutions.append(('%{target-include-dir}', '@LIBCXX_TESTING_INSTALL_PREFIX@/@LIBCXX_INSTALL_INCLUDE_TARGET_DIR@'))
+config.substitutions.append(('%{lib-dir}', '@LIBCXX_TESTING_INSTALL_PREFIX@/@LIBCXX_INSTALL_LIBRARY_DIR@'))
+config.substitutions.append(('%{module-dir}', '@LIBCXX_TESTING_INSTALL_PREFIX@/@LIBCXX_INSTALL_MODULES_DIR@'))
config.substitutions.append(('%{test-tools-dir}', '@LIBCXX_TEST_TOOLS_PATH@'))
diff --git a/libcxx/test/libcxx/vendor/apple/system-install-properties.sh.cpp b/libcxx/test/libcxx/vendor/apple/system-install-properties.sh.cpp
index 4ea27401e35d4..eeae4fc0a3c00 100644
--- a/libcxx/test/libcxx/vendor/apple/system-install-properties.sh.cpp
+++ b/libcxx/test/libcxx/vendor/apple/system-install-properties.sh.cpp
@@ -32,10 +32,8 @@
// various tools like dyld and ld64 will treat us specially if they recognize us as being a
// system library.
//
-// TODO: We currently don't do that correctly in the CMake build.
-//
-// XRUNX: otool -L "%{lib-dir}/libc++.1.dylib" | grep '/usr/lib/libc++.1.dylib'
-// XRUNX: ! otool -l "%{lib-dir}/libc++.1.dylib" | grep -E "LC_RPATH|@loader_path|@rpath"
+// RUN: otool -L "%{lib-dir}/libc++.1.dylib" | grep '/usr/lib/libc++.1.dylib'
+// RUN: otool -l "%{lib-dir}/libc++.1.dylib" | grep -vE "LC_RPATH|@loader_path|@rpath"
// Make sure the compatibility_version of libc++ is 1.0.0.
// Failure to respect this can result in applications not being able to find libc++
diff --git a/libcxx/utils/ci/apple-install-libcxx.sh b/libcxx/utils/ci/apple-install-libcxx.sh
index 4872253a266a8..1ef52b11b70bd 100755
--- a/libcxx/utils/ci/apple-install-libcxx.sh
+++ b/libcxx/utils/ci/apple-install-libcxx.sh
@@ -129,7 +129,6 @@ for arch in ${architectures}; do
-C "${llvm_root}/libcxx/cmake/caches/Apple.cmake" \
-DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \
-DCMAKE_INSTALL_PREFIX="${build_dir}/${arch}-install" \
- -DCMAKE_INSTALL_NAME_DIR="/usr/lib" \
-DCMAKE_OSX_ARCHITECTURES="${arch}" \
-DLIBCXXABI_LIBRARY_VERSION="${version}" \
-DLIBCXX_LIBRARY_VERSION="${version}" \
diff --git a/libcxx/utils/ci/run-buildbot b/libcxx/utils/ci/run-buildbot
index f1c20b9d72190..093731d9389e9 100755
--- a/libcxx/utils/ci/run-buildbot
+++ b/libcxx/utils/ci/run-buildbot
@@ -154,19 +154,6 @@ function check-runtimes() {
echo "+++ Running the libunwind tests"
${NINJA} -vC "${BUILD_DIR}" check-unwind
-
- # TODO: On macOS 13.5, the linker seems to have an issue where it will pick up
- # a library if it exists inside a -L search path, even if we don't link
- # against that library. This happens with libunwind.dylib if it is built
- # at the point when we run the libc++ tests, which causes issues cause we
- # are also linking against the system unwinder.
- #
- # I believe this is a linker regression and I reported it as rdar://115842730.
- # It should be possible to move this installation step back to the top once
- # that issue has been resolved, but in the meantime it doesn't really hurt to
- # have it here.
- echo "--- Installing libc++, libc++abi and libunwind to a fake location"
- ${NINJA} -vC "${BUILD_DIR}" install-cxx install-cxxabi install-unwind
}
# TODO: The goal is to test this against all configurations. We should also move
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