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CMakeLists.txt
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CMakeLists.txt
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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
# Require cmake that can build LLVM [1].
#
# Note: cmake in thirdparty/ will always meet this minimum.
#
# 1. http://llvm.org/releases/3.9.0/docs/ReleaseNotes.html
cmake_minimum_required(VERSION 3.4.3)
# Prevent builds from the top-level source directory. This ensures that build
# output is well isolated from the source tree.
#
# May be overridden by setting KUDU_ALLOW_IN_SOURCE_BUILD; this is only
# recommended for experts!
if("${CMAKE_CURRENT_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}" AND
NOT "${KUDU_ALLOW_IN_SOURCE_BUILD}")
message(FATAL_ERROR
"Kudu may not be built from the top-level source directory. Create a new "
"directory and run cmake from there, passing the path to the top-level "
"source directory as the last argument. "
"To override this, rerun CMake with -DKUDU_ALLOW_IN_SOURCE_BUILD=1. "
"Also, delete 'CMakeCache.txt' and 'CMakeFiles' from the top-level source "
"directory, otherwise future builds will not work.")
endif()
# Provide a 'latest' symlink to this build directory if the "blessed"
# multi-build layout is detected:
#
# build/
# build/<first build directory>
# build/<second build directory>
# ...
if ("${CMAKE_CURRENT_BINARY_DIR}" STREQUAL
"${CMAKE_CURRENT_SOURCE_DIR}/build/latest")
message(FATAL_ERROR "Should not run cmake inside the build/latest symlink. "
"First change directories into the destination of the symlink.")
endif()
string(REPLACE "${CMAKE_CURRENT_SOURCE_DIR}/build/" ""
BLESSED_BUILD_SUBDIR "${CMAKE_CURRENT_BINARY_DIR}")
string(FIND "${BLESSED_BUILD_SUBDIR}" "/" SLASH_POS)
if (SLASH_POS EQUAL -1)
# Create the symlink both during cmake invocation and when the default target
# ('all') is built. The former is useful for scripts that, after running
# cmake, only build a single target (i.e. "make lint").
execute_process(COMMAND ln ${MORE_ARGS} -nsf ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/build/latest)
add_custom_target(latest_symlink ALL
ln ${MORE_ARGS} -nsf ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/build/latest
COMMENT "Recreating ../build/latest symlink")
# 'ALL' above doesn't actually add 'latest_symlink' as a dependency to all
# targets. So, we override add_executable to ensure that whenever any executable
# is built, the symlink is re-created.
function(add_executable name)
# Call through to the original add_executable function.
_add_executable(${name} ${ARGN})
add_dependencies(${name} latest_symlink)
endfunction()
endif()
# TODO: can we somehow pass this into the java build?
file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/version.txt" KUDU_VERSION_NUMBER)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake_modules")
include(CMakeParseArguments)
set(BUILD_SUPPORT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/build-support)
set(THIRDPARTY_DIR ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty)
set(THIRDPARTY_INSTALL_DIR ${THIRDPARTY_DIR}/installed)
set(THIRDPARTY_INSTALL_COMMON_DIR ${THIRDPARTY_INSTALL_DIR}/common)
set(THIRDPARTY_INSTALL_UNINSTRUMENTED_DIR ${THIRDPARTY_INSTALL_DIR}/uninstrumented)
set(THIRDPARTY_INSTALL_TSAN_DIR ${THIRDPARTY_INSTALL_DIR}/tsan)
# Allow "make install" to not depend on all targets.
#
# Must be declared in the top-level CMakeLists.txt.
set(CMAKE_SKIP_INSTALL_ALL_DEPENDENCY true)
# Codegen-dependent executables need to be linked with -rdynamic; otherwise LLVM
# can't find dependent Kudu symbols at runtime.
#
# Setting the ENABLE_EXPORTS target property for each codegen-dependent
# executable is more precise, but that's a rather long target list, so we'll
# just do it once here for all Kudu executables.
set(CMAKE_ENABLE_EXPORTS true)
# Always generate the compilation database file (compile_commands.json) for use
# with various development tools, such as IWYU and Vim's YouCompleteMe plugin.
# See http://clang.llvm.org/docs/JSONCompilationDatabase.html
set(CMAKE_EXPORT_COMPILE_COMMANDS TRUE)
# Make sure thirdparty stuff is up-to-date.
if ("$ENV{NO_REBUILD_THIRDPARTY}" STREQUAL "")
if (${KUDU_USE_TSAN})
set(TP_ARGS "tsan")
endif()
execute_process(
COMMAND ${THIRDPARTY_DIR}/build-if-necessary.sh ${TP_ARGS}
RESULT_VARIABLE THIRDPARTY_SCRIPT_RESULT)
if (NOT (${THIRDPARTY_SCRIPT_RESULT} EQUAL 0))
message(FATAL_ERROR "Thirdparty was built unsuccessfully, terminating.")
endif()
endif()
############################################################
# Compiler flags
############################################################
# compiler flags that are common across debug/release builds
# -msse4.2: Enable sse4.2 compiler intrinsics.
set(CXX_COMMON_FLAGS "-msse4.2")
# -Wall: Enable all warnings.
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wall")
# -Wno-sign-compare: suppress warnings for comparison between signed and unsigned
# integers
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-sign-compare")
# -Wno-comment: suppress warnings about backslash-newline in "//" comments,
# which appear in the Kudu source code due to the use of ASCII art and
# multi-line command line examples in comments.
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-comment")
# -Wno-deprecated: we currently have a number of places using deprecated functions
# (mostly our own functions). TODO(todd) remove or individually suppress call sites.
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wno-deprecated")
# -pthread: enable multithreaded malloc
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -pthread")
# -fno-strict-aliasing
# Assume programs do not follow strict aliasing rules.
# GCC cannot always verify whether strict aliasing rules are indeed followed due to
# fundamental limitations in escape analysis, which can result in subtle bad code generation.
# This has a small perf hit but worth it to avoid hard to debug crashes.
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -fno-strict-aliasing")
# -DBOOST_DATE_TIME_POSIX_TIME_STD_CONFIG: enable nanosecond precision for boost
set(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -DBOOST_DATE_TIME_POSIX_TIME_STD_CONFIG")
# We want access to the PRI* print format macros.
add_definitions(-D__STDC_FORMAT_MACROS)
# We want short macros from util/status.h.
add_definitions(-DKUDU_HEADERS_USE_SHORT_STATUS_MACROS=1)
# Slice includes many gutil dependencies that third-party users of the Kudu
# client library don't have. Our build has them, though.
add_definitions(-DKUDU_HEADERS_USE_RICH_SLICE=1)
# We don't want to use any stubs; that's exclusively for builds using our
# exported client headers).
add_definitions(-DKUDU_HEADERS_NO_STUBS=1)
# compiler flags for different build types (run 'cmake -DCMAKE_BUILD_TYPE=<type> .')
# For all builds:
# For CMAKE_BUILD_TYPE=Debug
# -ggdb: Enable gdb debugging
# For CMAKE_BUILD_TYPE=FastDebug
# Same as DEBUG, except with some optimizations on.
# For CMAKE_BUILD_TYPE=Release
# -O3: Enable all compiler optimizations
# -g: Enable symbols for profiler tools (TODO: remove for shipping)
# -DNDEBUG: Turn off dchecks/asserts/debug only code.
# -fno-omit-frame-pointer
# use frame pointers to allow simple stack frame walking for backtraces.
# This has a small perf hit but worth it for the ability to profile in production
# For profile guided optimization (PGO) builds, in addition to the flags for release builds:
# 1. Build first with CMAKE_BUILD_TYPE_PROFILE_GEN:
# -fprofile-generate: Indicates compiler should insert profile guided optimization events
# 2. Run the benchmarks (generates *.gcda profiling data).
# 3. Build again with CMAKE_BUILD_TYPE_PROFILE_BUILD
# -fprofile-use: Compiler will use the profile outputs for optimizations
set(CXX_FLAGS_DEBUG "-ggdb")
set(CXX_FLAGS_FASTDEBUG "-ggdb -O1 -fno-omit-frame-pointer")
set(CXX_FLAGS_RELEASE "-O3 -g -DNDEBUG -fno-omit-frame-pointer")
if (NOT "${KUDU_USE_LTO}" STREQUAL "")
set(CXX_FLAGS_RELEASE "${CXX_FLAGS_RELEASE} -flto -fuse-ld=lld")
set(CMAKE_AR "llvm-ar")
set(CMAKE_RANLIB "llvm-ranlib")
endif()
set(CXX_FLAGS_PROFILE_GEN "${CXX_FLAGS_RELEASE} -fprofile-generate")
set(CXX_FLAGS_PROFILE_BUILD "${CXX_FLAGS_RELEASE} -fprofile-use")
# if no build build type is specified, default to debug builds
if (NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE Debug)
endif(NOT CMAKE_BUILD_TYPE)
string (TOUPPER ${CMAKE_BUILD_TYPE} CMAKE_BUILD_TYPE)
# Alias RELEASE as RELWITHDEBINFO and MINSIZEREL. These are common CMake
# release type names and this provides compatibility with the CLion IDE.
if ("${CMAKE_BUILD_TYPE}" STREQUAL "RELWITHDEBINFO" OR "${CMAKE_BUILD_TYPE}" STREQUAL "MINSIZEREL")
set(CMAKE_BUILD_TYPE RELEASE)
endif ()
# Set compile flags based on the build type.
message("Configured for ${CMAKE_BUILD_TYPE} build (set with cmake -DCMAKE_BUILD_TYPE={release,debug,...})")
if ("${CMAKE_BUILD_TYPE}" STREQUAL "DEBUG")
set(CMAKE_CXX_FLAGS ${CXX_FLAGS_DEBUG})
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "FASTDEBUG")
set(CMAKE_CXX_FLAGS ${CXX_FLAGS_FASTDEBUG})
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "RELEASE")
set(CMAKE_CXX_FLAGS ${CXX_FLAGS_RELEASE})
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "PROFILE_GEN")
set(CMAKE_CXX_FLAGS ${CXX_FLAGS_PROFILE_GEN})
elseif ("${CMAKE_BUILD_TYPE}" STREQUAL "PROFILE_BUILD")
set(CMAKE_CXX_FLAGS ${CXX_FLAGS_PROFILE_BUILD})
else()
message(FATAL_ERROR "Unknown build type: ${CMAKE_BUILD_TYPE}")
endif ()
# Add common flags
set(CMAKE_CXX_FLAGS "${CXX_COMMON_FLAGS} ${CMAKE_CXX_FLAGS}")
# Determine compiler version
include(CompilerInfo)
if ("${COMPILER_FAMILY}" STREQUAL "clang")
# Using Clang with ccache causes a bunch of spurious warnings that are
# purportedly fixed in the next version of ccache. See the following for details:
#
# http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html
# http://petereisentraut.blogspot.com/2011/09/ccache-and-clang-part-2.html
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Qunused-arguments")
# Clang generates ambiguous member template warnings when calling the ev++ api.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-ambiguous-member-template")
# Emit a warning when the method/function marked as deprecated
# in its in-line documentation but lacks the deprecated attribute
# ATTRIBUTE_DEPRECATED in its signature.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wdocumentation-deprecated-sync")
# Avoid 'taking address of packed member' warnings, which pollute macOs/clang 4.0 builds.
# This is also done in chromium. See:
# https://bugs.chromium.org/p/chromium/issues/detail?id=619640
# Unfortunately older versions of clang complain about not knowing the warning, so
# this also disables the warning about unknown warnings.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-unknown-warning-option -Wno-address-of-packed-member")
# Only hardcode -fcolor-diagnostics if stderr is opened on a terminal. Otherwise
# the color codes show up as noisy artifacts.
#
# This test is imperfect because 'cmake' and 'make' can be run independently
# (with different terminal options), and we're testing during the former.
#
# We also provide a manual override as -DKUDU_FORCE_COLOR_DIAGNOSTICS=1 or
# by setting an environment variable of the same name.
execute_process(COMMAND test -t 2 RESULT_VARIABLE KUDU_IS_TTY)
if ((NOT "${KUDU_FORCE_COLOR_DIAGNOSTICS}" STREQUAL "") OR
(NOT "$ENV{KUDU_FORCE_COLOR_DIAGNOSTICS}" STREQUAL "") OR
((${KUDU_IS_TTY} EQUAL 0) AND (NOT ("$ENV{TERM}" STREQUAL "dumb"))))
message("Running in a controlling terminal")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics")
else()
message("Running without a controlling terminal or in a dumb terminal")
endif()
elseif("${COMPILER_FAMILY}" STREQUAL "gcc")
# Disallow GCC < 4.8, since it doesn't support the C++11 standard
# well enough for us.
if ("${COMPILER_VERSION}" VERSION_LESS "4.8")
message(FATAL_ERROR "GCC <4.8 not supported. Consider using "
"thirdparty/clang-toolchain/ to build on older hosts.")
endif()
# GCC 4.8's tree vectorizer has a bug which causes hard-to-debug incorrect
# code. Disable this option on release builds, where it would otherwise
# be enabled by -O3.
if ("${COMPILER_VERSION}" MATCHES "^4.8" AND
"${CMAKE_BUILD_TYPE}" STREQUAL "RELEASE")
message("Running release build on gcc 4.8. The tree-vectorize optimization "
"in this version of gcc is known to be buggy. Disabling it.")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-tree-vectorize")
endif()
endif()
# Sanity check linking option.
if (NOT KUDU_LINK)
set(KUDU_LINK "a")
elseif(NOT ("auto" MATCHES "^${KUDU_LINK}" OR
"dynamic" MATCHES "^${KUDU_LINK}" OR
"static" MATCHES "^${KUDU_LINK}"))
message(FATAL_ERROR "Unknown value for KUDU_LINK, must be auto|dynamic|static")
else()
# Remove all but the first letter.
string(SUBSTRING "${KUDU_LINK}" 0 1 KUDU_LINK)
endif()
# If not set, any file that includes kudu_export.h (an autogenerated file) will
# use visibility("hidden") with symbols annotated with KUDU_NO_EXPORT, even when
# compiled with default visibility flags. It is overridden as needed by
# ADD_EXPORTABLE_LIBRARY() when actually compiling exported library variants.
add_definitions("-DKUDU_STATIC_DEFINE")
# Clang does not support using ASAN and TSAN simultaneously.
if ("${KUDU_USE_ASAN}" AND "${KUDU_USE_TSAN}")
message(SEND_ERROR "Can only enable one of ASAN or TSAN at a time")
endif()
# Flag to enable clang address sanitizer
# This will only build if clang or a recent enough gcc is the chosen compiler
if (${KUDU_USE_ASAN})
if(NOT (("${COMPILER_FAMILY}" STREQUAL "clang") OR
("${COMPILER_FAMILY}" STREQUAL "gcc" AND "${COMPILER_VERSION}" VERSION_GREATER "4.8")))
message(SEND_ERROR "Cannot use ASAN without clang or gcc >= 4.8")
endif()
# If UBSAN is also enabled, and we're on clang < 3.5, ensure static linking is
# enabled. Otherwise, we run into https://llvm.org/bugs/show_bug.cgi?id=18211
if("${KUDU_USE_UBSAN}" AND
"${COMPILER_FAMILY}" STREQUAL "clang" AND
"${COMPILER_VERSION}" VERSION_LESS "3.5")
if("${KUDU_LINK}" STREQUAL "a")
message("Using static linking for ASAN+UBSAN build")
set(KUDU_LINK "s")
elseif("${KUDU_LINK}" STREQUAL "d")
message(SEND_ERROR "Cannot use dynamic linking when ASAN and UBSAN are both enabled")
endif()
endif()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -DADDRESS_SANITIZER")
endif()
if (${KUDU_USE_XRAY})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fxray-instrument")
endif()
# For any C code, use the same flags.
set(CMAKE_C_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
# Enable the Clang undefined behavior (UB) sanitizer.
if (${KUDU_USE_UBSAN})
if(NOT (("${COMPILER_FAMILY}" STREQUAL "clang") OR
("${COMPILER_FAMILY}" STREQUAL "gcc" AND "${COMPILER_VERSION}" VERSION_GREATER "4.9")))
message(SEND_ERROR "Cannot use UBSAN without clang or gcc >= 4.9")
endif()
# Enable UB and unsigned integer overflow detection.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined,integer")
# Disable 'alignment' because unaligned access is really OK on Nehalem and we do it all over the place.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-sanitize=alignment")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize-blacklist=${CMAKE_CURRENT_SOURCE_DIR}/build-support/ubsan-blacklist.txt")
# Stop execution after UB or overflow is detected.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-sanitize-recover")
endif ()
# Flag to enable thread sanitizer (clang or gcc 4.8)
if (${KUDU_USE_TSAN})
if(NOT (("${COMPILER_FAMILY}" STREQUAL "clang") OR
("${COMPILER_FAMILY}" STREQUAL "gcc" AND "${COMPILER_VERSION}" VERSION_GREATER "4.8")))
message(SEND_ERROR "Cannot use TSAN without clang or gcc >= 4.8")
endif()
add_definitions("-fsanitize=thread")
# Enables dynamic_annotations.h to actually generate code
add_definitions("-DDYNAMIC_ANNOTATIONS_ENABLED")
# changes atomicops to use the tsan implementations
add_definitions("-DTHREAD_SANITIZER")
# Disables using the precompiled template specializations for std::string, shared_ptr, etc
# so that the annotations in the header actually take effect.
add_definitions("-D_GLIBCXX_EXTERN_TEMPLATE=0")
# Compile and link against the thirdparty TSAN instrumented libstdcxx.
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-rpath,${THIRDPARTY_INSTALL_TSAN_DIR}/lib")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=thread")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -nostdinc++")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -L${THIRDPARTY_INSTALL_TSAN_DIR}/lib")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -isystem ${THIRDPARTY_INSTALL_TSAN_DIR}/include/c++/v1")
# Strictly speaking, TSAN doesn't require dynamic linking. But it does
# require all code to be position independent, and the easiest way to
# guarantee that is via dynamic linking (not all 3rd party archives are
# compiled with -fPIC e.g. boost).
if("${KUDU_LINK}" STREQUAL "a")
message("Using dynamic linking for TSAN")
set(KUDU_LINK "d")
elseif("${KUDU_LINK}" STREQUAL "s")
message(SEND_ERROR "Cannot use TSAN with static linking")
endif()
endif()
if ("${KUDU_USE_UBSAN}" OR "${KUDU_USE_ASAN}" OR "${KUDU_USE_TSAN}")
# GCC 4.8 and 4.9 (latest as of this writing) don't allow you to specify a
# sanitizer blacklist.
if("${COMPILER_FAMILY}" STREQUAL "clang")
# Require clang 3.4 or newer; clang 3.3 has issues with TSAN and pthread
# symbol interception.
if("${COMPILER_VERSION}" VERSION_LESS "3.4")
message(SEND_ERROR "Must use clang 3.4 or newer to run a sanitizer build."
" Try using clang from thirdparty/")
endif()
add_definitions("-fsanitize-blacklist=${BUILD_SUPPORT_DIR}/sanitize-blacklist.txt")
else()
message(WARNING "GCC does not support specifying a sanitizer blacklist. Known sanitizer check failures will not be suppressed.")
endif()
endif()
# Code coverage
if ("${KUDU_GENERATE_COVERAGE}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --coverage -DCOVERAGE_BUILD")
if(NOT "${COMPILER_FAMILY}" STREQUAL "clang")
# Use clang for coverage builds so that we can standardize on a single
# compiler. clang also handles flushing coverage from shared libraries
# better than gcc.
message(SEND_ERROR "Must use clang for coverage build")
endif()
endif()
# If we still don't know what kind of linking to perform, choose based on
# build type (developers like fast builds).
if ("${KUDU_LINK}" STREQUAL "a")
if ("${CMAKE_BUILD_TYPE}" STREQUAL "DEBUG" OR
"${CMAKE_BUILD_TYPE}" STREQUAL "FASTDEBUG")
message("Using dynamic linking for ${CMAKE_BUILD_TYPE} builds")
set(KUDU_LINK "d")
else()
message("Using static linking for ${CMAKE_BUILD_TYPE} builds")
set(KUDU_LINK "s")
endif()
endif()
# Interrogates the linker version via the C++ compiler to determine whether
# we're using the gold linker, and if so, extracts its version.
#
# If the gold linker is being used, sets GOLD_VERSION in the parent scope with
# the extracted version.
#
# Any additional arguments are passed verbatim into the C++ compiler invocation.
function(GET_GOLD_VERSION)
# The gold linker is only for ELF binaries, which macOS doesn't use.
if (APPLE)
return()
endif()
execute_process(COMMAND ${CMAKE_CXX_COMPILER} "-Wl,--version" ${ARGN}
ERROR_QUIET
OUTPUT_VARIABLE LINKER_OUTPUT)
# We're expecting LINKER_OUTPUT to look like one of these:
# GNU gold (version 2.24) 1.11
# GNU gold (GNU Binutils for Ubuntu 2.30) 1.15
if (LINKER_OUTPUT MATCHES "GNU gold")
string(REGEX MATCH "GNU gold \\([^\\)]*\\) (([0-9]+\\.?)+)" _ "${LINKER_OUTPUT}")
if (NOT CMAKE_MATCH_1)
message(SEND_ERROR "Could not extract GNU gold version. "
"Linker version output: ${LINKER_OUTPUT}")
endif()
set(GOLD_VERSION "${CMAKE_MATCH_1}" PARENT_SCOPE)
endif()
endfunction()
# Is the compiler hard-wired to use the gold linker?
GET_GOLD_VERSION()
if (GOLD_VERSION)
set(MUST_USE_GOLD 1)
else()
# Can the compiler optionally enable the gold linker?
GET_GOLD_VERSION("-fuse-ld=gold")
# We can't use the gold linker if it's inside devtoolset because the compiler
# won't find it when invoked directly from make/ninja (which is typically
# done outside devtoolset).
execute_process(COMMAND which ld.gold
OUTPUT_VARIABLE GOLD_LOCATION
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_QUIET)
if ("${GOLD_LOCATION}" MATCHES "^/opt/rh/devtoolset")
message("Skipping optional gold linker (version ${GOLD_VERSION}) because "
"it's in devtoolset")
set(GOLD_VERSION)
endif()
endif()
if (GOLD_VERSION)
# Older versions of the gold linker are vulnerable to a bug [1] which
# prevents weak symbols from being overridden properly. This leads to
# omitting of Kudu's tcmalloc dependency.
#
# How we handle this situation depends on other factors:
# - If gold is optional, we won't use it.
# - If gold is required, we'll either:
# - Raise an error in RELEASE builds (we shouldn't release such a product), or
# - Drop tcmalloc in all other builds.
#
# 1. https://sourceware.org/bugzilla/show_bug.cgi?id=16979.
if ("${GOLD_VERSION}" VERSION_LESS "1.12")
set(KUDU_BUGGY_GOLD 1)
endif()
if (MUST_USE_GOLD)
message("Using hard-wired gold linker (version ${GOLD_VERSION})")
if (KUDU_BUGGY_GOLD)
if ("${KUDU_LINK}" STREQUAL "d" AND
"${CMAKE_BUILD_TYPE}" STREQUAL "RELEASE")
message(SEND_ERROR "Configured to use buggy gold with dynamic linking "
"in a RELEASE build; this would cause tcmalloc symbols to get dropped")
endif()
message("Hard-wired gold linker is buggy, dropping tcmalloc dependency")
endif()
elseif (NOT KUDU_BUGGY_GOLD)
# The Gold linker must be manually enabled.
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fuse-ld=gold")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fuse-ld=gold")
message("Using optional gold linker (version ${GOLD_VERSION})")
else()
message("Optional gold linker is buggy, using ld linker instead")
endif()
else()
message("Using ld linker")
endif()
# Having set KUDU_LINK due to build type and/or sanitizer, it's now safe to
# act on its value.
if ("${KUDU_LINK}" STREQUAL "d")
set(BUILD_SHARED_LIBS ON)
# Position independent code is only necessary when producing shared objects.
add_definitions(-fPIC)
endif()
# where to put generated archives (.a files)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/lib")
file(MAKE_DIRECTORY "${CMAKE_ARCHIVE_OUTPUT_DIRECTORY}")
# where to put generated libraries (.so files)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/lib")
file(MAKE_DIRECTORY "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}")
# where to put generated binaries
set(EXECUTABLE_OUTPUT_PATH "${CMAKE_CURRENT_BINARY_DIR}/bin")
file(MAKE_DIRECTORY "${EXECUTABLE_OUTPUT_PATH}")
include_directories(${CMAKE_CURRENT_BINARY_DIR}/src)
include_directories(src)
include_directories(SYSTEM ${THIRDPARTY_INSTALL_COMMON_DIR}/include)
############################################################
# Visibility
############################################################
# For generate_export_header() and add_compiler_export_flags().
include(GenerateExportHeader)
# Honor visibility properties for all target types. See
# "cmake --help-policy CMP0063" for details.
#
# This policy was only added to cmake in version 3.3, so until the cmake in
# thirdparty is updated, we must check if the policy exists before setting it.
if(POLICY CMP0063)
cmake_policy(SET CMP0063 NEW)
endif()
# add_library() wrapper that adds a second variant of the library for use in the
# exported Kudu C++ client. This variant is suffixed with "_exported" and is
# compiled with special visibility flags to hide all symbols except those that
# are part of the public ABI.
#
# There are two different kinds of exported libraries: internal and leaf.
# Internal libraries are static archives while leaf libraries are shared
# objects built from internal libraries. In practice there is only one leaf
# library: the Kudu C++ client itself.
#
# Arguments:
#
# LIB_NAME is the name of the library. It must come first. Required.
#
# SRCS is the list of source files to compile into the library. Required.
#
# DEPS is the list of targets that both library variants depend on. Required.
#
# NONLINK_DEPS is the list of (non-linked) targets that both library variants
# depend on. Optional.
#
# COMPILE_FLAGS is a string containing any additional compilation flags that
# should be added to both library variants. Optional.
#
# EXPORTED_SHARED is a toggle that, if set, indicates that the exported variant
# is a "leaf" library. Otherwise it is an "internal" library. Optional.
#
# EXPORTED_OUTPUT_NAME is a string describing a different file name for the
# exported library variant. If not set, defaults to LIB_NAME. Optional.
#
# EXPORTED_OUTPUT_DIRECTORY is a string describing a different directory where
# the exported library variant should be written. If not set, defaults to the
# directory where this function was called. Optional.
#
# EXPORTED_DEPS is a list of targets that the exported library variant depends
# on. If not set, defaults to DEPS. Optional.
function(ADD_EXPORTABLE_LIBRARY LIB_NAME)
# Parse the arguments.
set(options EXPORTED_SHARED)
set(one_value_args COMPILE_FLAGS EXPORTED_OUTPUT_NAME EXPORTED_OUTPUT_DIRECTORY)
set(multi_value_args SRCS DEPS EXPORTED_DEPS NONLINK_DEPS)
cmake_parse_arguments(ARG "${options}" "${one_value_args}" "${multi_value_args}" ${ARGN})
if(ARG_UNPARSED_ARGUMENTS)
message(SEND_ERROR "Error: unrecognized arguments: ${ARG_UNPARSED_ARGUMENTS}")
endif()
# First add the regular version of the library. It uses
# whatever linkage was defined globally.
add_library(${LIB_NAME} ${ARG_SRCS})
if(ARG_COMPILE_FLAGS)
set_target_properties(${LIB_NAME}
PROPERTIES COMPILE_FLAGS ${ARG_COMPILE_FLAGS})
endif()
target_link_libraries(${LIB_NAME} ${ARG_DEPS})
if(ARG_NONLINK_DEPS)
add_dependencies(${LIB_NAME} ${ARG_NONLINK_DEPS})
endif()
# Now start setting up the exported variant.
set(EXPORTED_LIB_NAME ${LIB_NAME}_exported)
if(ARG_EXPORTED_SHARED)
# Leaf library.
set(EXPORTED_LINKAGE "SHARED")
set(EXPORTED_LINK_PRIVATE "LINK_PRIVATE")
else()
# Internal library.
set(EXPORTED_LINKAGE "STATIC")
set(EXPORTED_LINK_PRIVATE)
endif()
add_library(${EXPORTED_LIB_NAME} ${EXPORTED_LINKAGE} ${ARG_SRCS})
# Compile with visibility flags:
# - default for classes annotated with KUDU_EXPORT.
# - hidden for classes annotated with KUDU_NO_EXPORT.
# - hidden for everything else.
if(POLICY CMP0063)
set_target_properties(${EXPORTED_LIB_NAME}
PROPERTIES C_VISIBILITY_PRESET hidden)
set_target_properties(${EXPORTED_LIB_NAME}
PROPERTIES CXX_VISIBILITY_PRESET hidden)
set_target_properties(${EXPORTED_LIB_NAME}
PROPERTIES VISIBILITY_INLINES_HIDDEN 1)
else()
add_compiler_export_flags(EXPORTED_FLAGS)
endif()
# Exported variants are either static archives that will be linked to a shared
# object, or shared objects. Either way, -fPIC is needed.
if("${KUDU_LINK}" STREQUAL "s")
set(EXPORTED_FLAGS "${EXPORTED_FLAGS} -fPIC")
endif()
# We need to remove some definitions previously added at directory scope.
# There doesn't appear to be a good way to do this in cmake, so we do it via
# the compiler with -U (e.g. "-UFOO" means "undefine the FOO definition").
# Adding insult to injury, the COMPILE_DEFINITIONS property adds a -D prefix
# to anything passed into it, so we're forced to handle the removal via
# COMPILE_FLAGS, which, lucky for us, is emitted on the command line after
# COMPILE_DEFINITIONS.
# Exported variants need KUDU_EXPORT definitions to take effect.
set(EXPORTED_FLAGS "${EXPORTED_FLAGS} -UKUDU_STATIC_DEFINE")
# Exported variants may not use tcmalloc.
set(EXPORTED_FLAGS "${EXPORTED_FLAGS} -UTCMALLOC_ENABLED")
# Exported variants should conform to the C++03 ABI, which doesn't
# include sized deallocation (new in C++14). This reverses the setting from
# non-exported (default) flags.
if(COMPILER_SUPPORTS_SIZED_DEALLOCATION)
# Note: this is retained by the set_target_properties() call below.
target_compile_options(${EXPORTED_LIB_NAME}
PRIVATE $<$<COMPILE_LANGUAGE:CXX>:-fno-sized-deallocation>)
endif()
set_target_properties(${EXPORTED_LIB_NAME}
PROPERTIES COMPILE_FLAGS "${ARG_COMPILE_FLAGS} ${EXPORTED_FLAGS}")
# Handle EXPORTED_OUTPUT_NAME and EXPORTED_OUTPUT_DIRECTORY.
if(ARG_EXPORTED_OUTPUT_NAME)
set_target_properties(${EXPORTED_LIB_NAME}
PROPERTIES LIBRARY_OUTPUT_NAME ${ARG_EXPORTED_OUTPUT_NAME})
endif()
if(ARG_EXPORTED_OUTPUT_DIRECTORY)
set_target_properties(${EXPORTED_LIB_NAME}
PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${ARG_EXPORTED_OUTPUT_DIRECTORY})
endif()
# Set up exported variant dependent targets.
#
# Every linked dependency is suffixed with "_exported". This is fine; the
# exported target graph is expected to be complete, and ADD_THIRDPARTY_LIB
# will provide an "exported variant" for each third party target.
if(ARG_EXPORTED_DEPS)
set(EXPORTED_DEPS ${ARG_EXPORTED_DEPS})
else()
set(EXPORTED_DEPS ${ARG_DEPS})
endif()
foreach(DEP ${EXPORTED_DEPS})
list(APPEND EXPORTED_SUFFIXED_DEPS "${DEP}_exported")
endforeach()
target_link_libraries(${EXPORTED_LIB_NAME} ${EXPORTED_LINK_PRIVATE} ${EXPORTED_SUFFIXED_DEPS})
if(ARG_NONLINK_DEPS)
add_dependencies(${EXPORTED_LIB_NAME} ${ARG_NONLINK_DEPS})
endif()
endfunction()
############################################################
# Testing
############################################################
# Add a new binary that is compiled just like a unit test but is not executed
# by or registered with "ctest". Useful for writing tests that use the Google
# Test infrastructure but cannot or should not be run pre-commit.
function(ADD_KUDU_TEST_NO_CTEST REL_TEST_NAME)
get_filename_component(TEST_NAME ${REL_TEST_NAME} NAME_WE)
add_executable(${TEST_NAME} "${REL_TEST_NAME}.cc")
target_link_libraries(${TEST_NAME} ${KUDU_TEST_LINK_LIBS})
endfunction()
# Add a new test case, with or without an executable that should be built.
#
# REL_TEST_NAME is the name of the test. It may be a single component
# (e.g. monotime-test) or contain additional components (e.g.
# net/net_util-test). Either way, the last component must be a globally
# unique name.
#
# Additional optional arguments:
#
# TIMEOUT <secs>
# Sets a timeout for running this test.
#
# NOTE: this only affects the test timeout when run via 'ctest'.
# Jenkins builds typically execute tests using dist-test, and that
# does not respect these timeouts. If a test suite is long enough
# to require a bumped timeout, consider enabling sharding of the
# test (see below).
#
# NUM_SHARDS <num shards>
# Sets the number of shards used for running this test.
#
# This configuration splits up the test cases within the binary
# into several separate shards. Each shard becomes a separate
# test case when run by ctest or when submitted for distributed testing.
# This should be used whenever a test binary is long-running and
# consists of many separate test cases.
#
# NOTE: sharding is still recommended even for tests with RUN_SERIAL
# or RESOURCE_LOCK properties. Even though the shards cannot run in
# parallel on a single machine using ctest, they will still run in
# parallel across separate machines using dist-test.
#
# PROCESSORS <num processors>
# RUN_SERIAL true
# These built-in CMake properties should be used when a test is
# a heavy consumer of CPU.
#
# The PROCESSORS flag allows ctest to ensure that tests are only
# scheduled in parallel when an appropriate number of cores are
# available. The default is to assume that a test uses a single core
# (i.e. equivalent to PROCESSORS 1).
#
# RUN_SERIAL ensures that the test does not run in parallel with any
# other test. This should be used for stress tests which start many
# threads and attempt to monopolize the machine.
#
# In order to determine an appropriate setting, you can run the test
# with the KUDU_MEASURE_TEST_CPU_CONSUMPTION environment variable
# set. See build-support/run-test.sh for more details.
#
# DATA_FILES <file1> <file2> ...
# Specify data files that should be copied into the build directory
# next to test executable. These will also be automatically uploaded
# to the dist-test environment.
#
# If the file is in a directory, an equivalent directory path will
# be made in the build directory. For example, 'testdata/foo' will
# ensure that an equivalent directory 'testdata/' is made in the
# build directory.
#
# Any other arguments will be passed to set_tests_properties().
function(ADD_KUDU_TEST REL_TEST_NAME)
# Parse out properties for which we have special handling.
set(options)
set(one_value_args TIMEOUT NUM_SHARDS)
set(multi_value_args DATA_FILES)
cmake_parse_arguments(ARG "${options}" "${one_value_args}" "${multi_value_args}" ${ARGN})
if(NOT ARG_TIMEOUT)
# Default to 15 minutes.
# NOTE: this should be kept in sync with the default value of KUDU_TEST_TIMEOUT
# in build-support/run-test.sh
set(ARG_TIMEOUT 900)
endif()
if(NOT ARG_NUM_SHARDS)
set(ARG_NUM_SHARDS 1)
endif()
# Any unrecognized arguments go into ${ARG_UNPARSED_ARGUMENTS}, which we forward
# along as properties down below.
if(NO_TESTS)
return()
endif()
get_filename_component(TEST_NAME ${REL_TEST_NAME} NAME_WE)
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${REL_TEST_NAME}.cc)
# This test has a corresponding .cc file, set it up as an executable.
set(TEST_PATH "${EXECUTABLE_OUTPUT_PATH}/${TEST_NAME}")
ADD_KUDU_TEST_NO_CTEST(${REL_TEST_NAME})
elseif(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${REL_TEST_NAME})
# No executable, just invoke the test (probably a script) directly.
get_filename_component(TEST_NAME_WITH_EXT ${REL_TEST_NAME} NAME)
set(TEST_PATH "${EXECUTABLE_OUTPUT_PATH}/${TEST_NAME_WITH_EXT}")
# Ideally this would run only when the test is built, not when cmake runs,
# but add_test() doesn't yield a target (if it did, that target could depend
# on an add_custom_command() that copies the test file into place).
execute_process(COMMAND ln -sf ${CMAKE_CURRENT_SOURCE_DIR}/${REL_TEST_NAME}
${EXECUTABLE_OUTPUT_PATH})
else()
message(FATAL_ERROR "Neither ${REL_TEST_NAME} nor ${REL_TEST_NAME}.cc were found in ${CMAKE_CURRENT_SOURCE_DIR}/")
endif()
# Copy data files into the build directory.
foreach(DATA_FILE ${ARG_DATA_FILES})
get_filename_component(DST_DIR ${DATA_FILE} DIRECTORY)
set(DST_DIR ${EXECUTABLE_OUTPUT_PATH}/${DST_DIR})
# If there is a symlink there, replace it with a copy. This is to
# work around issues with incremental builds where earlier build
# setups had used symlinks into the build directory instead of
# copies.
if(IS_SYMLINK ${DST_DIR}/${DATA_FILE})
file(REMOVE ${DST_DIR}/${DATA_FILE})
endif()
file(COPY ${CMAKE_CURRENT_SOURCE_DIR}/${DATA_FILE}
# Copy with read-only permissions since tests should not
# modify the data files in place.
DIRECTORY_PERMISSIONS OWNER_READ OWNER_EXECUTE GROUP_READ GROUP_EXECUTE
FILE_PERMISSIONS OWNER_READ GROUP_READ
DESTINATION ${DST_DIR})
endforeach()
math(EXPR MAX_SHARD "${ARG_NUM_SHARDS} - 1")
foreach(SHARD_NUM RANGE ${MAX_SHARD})
# Only name the targets with a '.<shard>' if the test is sharded.
if(${ARG_NUM_SHARDS} EQUAL 1)
set(TARGET ${TEST_NAME})
else()
set(TARGET ${TEST_NAME}.${SHARD_NUM})
endif()
add_test(${TARGET}
${BUILD_SUPPORT_DIR}/run-test.sh ${TEST_PATH})
if(ARG_UNPARSED_ARGUMENTS)
set_tests_properties(${TARGET} PROPERTIES ${ARG_UNPARSED_ARGUMENTS})
endif()
# Set the ctest timeout to be a bit longer than the timeout we pass to
# our test wrapper. This gives the test wrapper some opportunity to do
# things like dump stacks, compress the log, etc.
math(EXPR EXTENDED_TIMEOUT "${ARG_TIMEOUT} + 30")
# Add the configured timeout to the environment for the test wrapper.
get_test_property(${TARGET} ENVIRONMENT CUR_TEST_ENV)
if(NOT CUR_TEST_ENV)
set(CUR_TEST_ENV "")
endif()
list(APPEND CUR_TEST_ENV "KUDU_TEST_TIMEOUT=${ARG_TIMEOUT}")
list(APPEND CUR_TEST_ENV "GTEST_TOTAL_SHARDS=${ARG_NUM_SHARDS}")
list(APPEND CUR_TEST_ENV "GTEST_SHARD_INDEX=${SHARD_NUM}")
# The only way we can pass information to dist-test is through the environment.
# So, use a comma-delimited environment variable to pass the list of data files
# that need to be uploaded.
string(REPLACE ";" "," DATA_FILES_ENV "${ARG_DATA_FILES}")
list(APPEND CUR_TEST_ENV "KUDU_DATA_FILES=${DATA_FILES_ENV}")
set_tests_properties(${TARGET} PROPERTIES
TIMEOUT ${EXTENDED_TIMEOUT}
ENVIRONMENT "${CUR_TEST_ENV}")
endforeach(SHARD_NUM)
endfunction()
# A wrapper for add_dependencies() that is compatible with NO_TESTS.
function(ADD_KUDU_TEST_DEPENDENCIES REL_TEST_NAME)
if(NO_TESTS)
return()
endif()
get_filename_component(TEST_NAME ${REL_TEST_NAME} NAME_WE)
add_dependencies(${TEST_NAME} ${ARGN})
endfunction()
enable_testing()
############################################################
# Dependencies
############################################################
function(ADD_THIRDPARTY_LIB LIB_NAME)
set(options)
set(one_value_args SHARED_LIB STATIC_LIB)
set(multi_value_args DEPS)
cmake_parse_arguments(ARG "${options}" "${one_value_args}" "${multi_value_args}" ${ARGN})
if(ARG_UNPARSED_ARGUMENTS)
message(SEND_ERROR "Error: unrecognized arguments: ${ARG_UNPARSED_ARGUMENTS}")
endif()
if(("${KUDU_LINK}" STREQUAL "s" AND ARG_STATIC_LIB) OR (NOT ARG_SHARED_LIB))
if(NOT ARG_STATIC_LIB)
message(FATAL_ERROR "No static or shared library provided for ${LIB_NAME}")
endif()
add_library(${LIB_NAME} STATIC IMPORTED)
set_target_properties(${LIB_NAME}
PROPERTIES IMPORTED_LOCATION "${ARG_STATIC_LIB}")
message("Added static library dependency ${LIB_NAME}: ${ARG_STATIC_LIB}")
else()
add_library(${LIB_NAME} SHARED IMPORTED)
set_target_properties(${LIB_NAME}
PROPERTIES IMPORTED_LOCATION "${ARG_SHARED_LIB}")
message("Added shared library dependency ${LIB_NAME}: ${ARG_SHARED_LIB}")
endif()
if(ARG_DEPS)
set_target_properties(${LIB_NAME}
PROPERTIES IMPORTED_LINK_INTERFACE_LIBRARIES "${ARG_DEPS}")
endif()
# Set up an "exported variant" for this thirdparty library (see "Visibility"
# above). It's the same as the real target, just with an "_exported" suffix.
# We prefer the static archive if it exists (as it's akin to an "internal"
# library), but we'll settle for the shared object if we must.
#
# A shared object exported variant will force any "leaf" library that
# transitively depends on it to also depend on it at runtime; this is
# desirable for some libraries (e.g. cyrus_sasl).
set(LIB_NAME_EXPORTED ${LIB_NAME}_exported)
if(ARG_STATIC_LIB)
add_library(${LIB_NAME_EXPORTED} STATIC IMPORTED)
set_target_properties(${LIB_NAME_EXPORTED}
PROPERTIES IMPORTED_LOCATION "${ARG_STATIC_LIB}")
else()
add_library(${LIB_NAME_EXPORTED} SHARED IMPORTED)
set_target_properties(${LIB_NAME_EXPORTED}
PROPERTIES IMPORTED_LOCATION "${ARG_SHARED_LIB}")
endif()
if(ARG_DEPS)
set_target_properties(${LIB_NAME_EXPORTED}
PROPERTIES IMPORTED_LINK_INTERFACE_LIBRARIES "${ARG_DEPS}")
endif()
endfunction()
if (${KUDU_USE_TSAN})
set(THIRDPARTY_INSTALL_CURRENT_DIR ${THIRDPARTY_INSTALL_DIR}/tsan)
else()
set(THIRDPARTY_INSTALL_CURRENT_DIR ${THIRDPARTY_INSTALL_DIR}/uninstrumented)
endif()
# Look in thirdparty prefix paths before anywhere else for system dependencies.
set(CMAKE_PREFIX_PATH
${THIRDPARTY_INSTALL_COMMON_DIR}
${THIRDPARTY_INSTALL_CURRENT_DIR}
${CMAKE_PREFIX_PATH})
## Cyrus SASL
find_package(CyrusSASL REQUIRED)
include_directories(SYSTEM ${CYRUS_SASL_INCLUDE_DIR})
ADD_THIRDPARTY_LIB(cyrus_sasl
SHARED_LIB "${CYRUS_SASL_SHARED_LIB}"
DEPS ${CYRUS_SASL_LIB_DEPS})
## GSSAPI
find_package(GSSAPI REQUIRED)
include_directories(SYSTEM ${GSSAPI_INCLUDE_DIR})
ADD_THIRDPARTY_LIB(gssapi_krb5
SHARED_LIB "${GSSAPI_SHARED_LIB}"
DEPS ${GSSAPI_LIB_DEPS})
## GLog
find_package(GLog REQUIRED)
include_directories(SYSTEM ${GLOG_INCLUDE_DIR})
ADD_THIRDPARTY_LIB(glog
STATIC_LIB "${GLOG_STATIC_LIB}"
SHARED_LIB "${GLOG_SHARED_LIB}")
list(APPEND KUDU_BASE_LIBS glog)
## libunwind (dependent of glog)
## Doesn't build on OSX.
if (NOT APPLE)
find_package(LibUnwind REQUIRED)
include_directories(SYSTEM ${UNWIND_INCLUDE_DIR})
ADD_THIRDPARTY_LIB(unwind
STATIC_LIB "${UNWIND_STATIC_LIB}"
SHARED_LIB "${UNWIND_SHARED_LIB}")