[libcxx-commits] [libcxx] 1454018 - Revert "[libc++] Use CMake interface targets to setup benchmark flags"
Leonard Chan via libcxx-commits
libcxx-commits at lists.llvm.org
Mon Aug 17 18:12:18 PDT 2020
Author: Leonard Chan
Date: 2020-08-17T18:11:56-07:00
New Revision: 1454018dc1d980940765e2121b26de9bd980ac7f
URL: https://github.com/llvm/llvm-project/commit/1454018dc1d980940765e2121b26de9bd980ac7f
DIFF: https://github.com/llvm/llvm-project/commit/1454018dc1d980940765e2121b26de9bd980ac7f.diff
LOG: Revert "[libc++] Use CMake interface targets to setup benchmark flags"
This reverts commit da0592e4c8df95efad4e42d63646f8a5336a7edc.
Reverting because this is incompatible with cmake 3.13.5, with the
minimum supported version being 3.13.4.
See https://luci-milo.appspot.com/p/fuchsia/builders/ci/clang-linux-x64/b8871967816877544224.
Added:
Modified:
libcxx/benchmarks/CMakeLists.txt
Removed:
################################################################################
diff --git a/libcxx/benchmarks/CMakeLists.txt b/libcxx/benchmarks/CMakeLists.txt
index b35506dcf04a..8480ede23a49 100644
--- a/libcxx/benchmarks/CMakeLists.txt
+++ b/libcxx/benchmarks/CMakeLists.txt
@@ -70,33 +70,57 @@ set(BENCHMARK_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR})
set(BENCHMARK_LIBCXX_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-libcxx)
set(BENCHMARK_NATIVE_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/benchmark-native)
-add_library(cxx-benchmarks-flags INTERFACE)
-target_compile_features(cxx-benchmarks-flags INTERFACE cxx_std_17)
-target_compile_options(cxx-benchmarks-flags INTERFACE -O2 -fsized-deallocation)
-target_include_directories(cxx-benchmarks-flags INTERFACE ${BENCHMARK_LIBCXX_INSTALL}/include
- INTERFACE ${LIBCXX_SOURCE_DIR}/test/support)
-
-add_library(cxx-benchmarks-flags-native INTERFACE)
-target_link_libraries(cxx-benchmarks-flags-native INTERFACE cxx-benchmarks-flags)
-target_compile_options(cxx-benchmarks-flags-native INTERFACE ${BENCHMARK_NATIVE_TARGET_FLAGS})
-target_link_options(cxx-benchmarks-flags-native INTERFACE ${BENCHMARK_NATIVE_TARGET_FLAGS} -L${BENCHMARK_NATIVE_INSTALL}/lib)
-if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++")
- find_library(LIBSTDCXX_FILESYSTEM_TEST stdc++fs
- PATHS ${LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN}
- PATH_SUFFIXES lib lib64
- DOC "The libstdc++ filesystem library used by the benchmarks"
- )
- if (LIBSTDCXX_FILESYSTEM_TEST)
- target_link_libraries(cxx-benchmarks-flags-native INTERFACE "-lstdc++fs")
- endif()
+check_flag_supported("-std=c++17")
+mangle_name("LIBCXX_SUPPORTS_STD_EQ_c++17_FLAG" BENCHMARK_SUPPORTS_STD_CXX17_FLAG)
+if (${BENCHMARK_SUPPORTS_STD_CXX17_FLAG})
+ set(BENCHMARK_DIALECT_FLAG "-std=c++17")
else()
- target_link_libraries(cxx-benchmarks-flags-native INTERFACE -lc++fs -lc++experimental)
+ # If the compiler doesn't support -std=c++17, attempt to fall back to -std=c++1z while still
+ # requiring C++17 language features.
+ set(BENCHMARK_DIALECT_FLAG "-std=c++1z")
endif()
-add_library(cxx-benchmarks-flags-libcxx INTERFACE)
-target_link_libraries(cxx-benchmarks-flags-libcxx INTERFACE cxx-benchmarks-flags)
-target_compile_options(cxx-benchmarks-flags-libcxx INTERFACE ${SANITIZER_FLAGS} -Wno-user-defined-literals)
-target_link_options(cxx-benchmarks-flags-libcxx INTERFACE -nodefaultlibs -L${BENCHMARK_LIBCXX_INSTALL}/lib/ ${SANITIZER_FLAGS})
+set(BENCHMARK_TEST_COMPILE_FLAGS
+ ${BENCHMARK_DIALECT_FLAG} -O2
+ -fsized-deallocation
+ -I${BENCHMARK_LIBCXX_INSTALL}/include
+ -I${LIBCXX_SOURCE_DIR}/test/support
+)
+set(BENCHMARK_TEST_LIBCXX_COMPILE_FLAGS
+ ${BENCHMARK_TEST_COMPILE_FLAGS}
+ ${SANITIZER_FLAGS}
+ -Wno-user-defined-literals
+)
+
+set(BENCHMARK_TEST_LIBCXX_LINK_FLAGS
+ -nodefaultlibs
+ -L${BENCHMARK_LIBCXX_INSTALL}/lib/
+ ${SANITIZER_FLAGS}
+)
+set(BENCHMARK_TEST_NATIVE_COMPILE_FLAGS
+ ${BENCHMARK_NATIVE_TARGET_FLAGS}
+ ${BENCHMARK_TEST_COMPILE_FLAGS}
+)
+set(BENCHMARK_TEST_NATIVE_LINK_FLAGS
+ ${BENCHMARK_NATIVE_TARGET_FLAGS}
+ -L${BENCHMARK_NATIVE_INSTALL}/lib
+)
+split_list(BENCHMARK_TEST_COMPILE_FLAGS)
+split_list(BENCHMARK_TEST_LIBCXX_COMPILE_FLAGS)
+split_list(BENCHMARK_TEST_LIBCXX_LINK_FLAGS)
+split_list(BENCHMARK_TEST_NATIVE_COMPILE_FLAGS)
+split_list(BENCHMARK_TEST_NATIVE_LINK_FLAGS)
+
+if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++")
+ find_library(LIBSTDCXX_FILESYSTEM_TEST stdc++fs
+ PATHS ${LIBCXX_BENCHMARK_NATIVE_GCC_TOOLCHAIN}
+ PATH_SUFFIXES lib lib64
+ DOC "The libstdc++ filesystem library used by the benchmarks"
+ )
+ if (NOT "${LIBSTDCXX_FILESYSTEM_TEST}" STREQUAL "LIBSTDCXX_FILESYSTEM_TEST-NOTFOUND")
+ set(LIBSTDCXX_FILESYSTEM_LIB "stdc++fs")
+ endif()
+endif()
set(libcxx_benchmark_targets)
@@ -104,7 +128,6 @@ function(add_benchmark_test name source_file)
set(libcxx_target ${name}_libcxx)
list(APPEND libcxx_benchmark_targets ${libcxx_target})
add_executable(${libcxx_target} EXCLUDE_FROM_ALL ${source_file})
- target_link_libraries(${libcxx_target} PRIVATE cxx-benchmarks-flags-libcxx)
add_dependencies(${libcxx_target} cxx google-benchmark-libcxx)
add_dependencies(cxx-benchmarks ${libcxx_target})
if (LIBCXX_ENABLE_SHARED)
@@ -122,15 +145,25 @@ function(add_benchmark_test name source_file)
set_target_properties(${libcxx_target}
PROPERTIES
OUTPUT_NAME "${name}.libcxx.out"
- RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}")
+ RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}"
+ COMPILE_FLAGS "${BENCHMARK_TEST_LIBCXX_COMPILE_FLAGS}"
+ LINK_FLAGS "${BENCHMARK_TEST_LIBCXX_LINK_FLAGS}")
cxx_link_system_libraries(${libcxx_target})
if (LIBCXX_BENCHMARK_NATIVE_STDLIB)
+ if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++" AND NOT DEFINED LIBSTDCXX_FILESYSTEM_LIB
+ AND "${name}" STREQUAL "filesystem")
+ return()
+ endif()
set(native_target ${name}_native)
add_executable(${native_target} EXCLUDE_FROM_ALL ${source_file})
- target_link_libraries(${native_target} PRIVATE cxx-benchmarks-flags-native)
add_dependencies(${native_target} google-benchmark-native
google-benchmark-libcxx)
target_link_libraries(${native_target} PRIVATE -lbenchmark)
+ if (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libstdc++")
+ target_link_libraries(${native_target} PRIVATE ${LIBSTDCXX_FILESYSTEM_LIB})
+ elseif (LIBCXX_BENCHMARK_NATIVE_STDLIB STREQUAL "libc++")
+ target_link_libraries(${native_target} PRIVATE -lc++fs -lc++experimental)
+ endif()
if (LIBCXX_HAS_PTHREAD_LIB)
target_link_libraries(${native_target} PRIVATE -pthread)
endif()
@@ -138,7 +171,10 @@ function(add_benchmark_test name source_file)
set_target_properties(${native_target}
PROPERTIES
OUTPUT_NAME "${name}.native.out"
- RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}")
+ RUNTIME_OUTPUT_DIRECTORY "${BENCHMARK_OUTPUT_DIR}"
+ INCLUDE_DIRECTORIES ""
+ COMPILE_FLAGS "${BENCHMARK_TEST_NATIVE_COMPILE_FLAGS}"
+ LINK_FLAGS "${BENCHMARK_TEST_NATIVE_LINK_FLAGS}")
endif()
endfunction()
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