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HADOOP-17196. Fix C/C++ standard warnings (#2208) 

* Passing C/C++ standard flags -std is
  not cross-compiler friendly as not all
  compilers support all values.
* Thus, we need to make use of the
  appropriate flags provided by CMake in
  order to specify the C/C++ standards.

Signed-off-by: Akira Ajisaka <aajisaka@apache.org>
(cherry picked from commit 909f1e82d3)
This commit is contained in:
Gautham B A 2020-08-11 13:05:08 +05:30 committed by Akira Ajisaka
parent 706d14c41d
commit b4a105a209
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GPG Key ID: C1EDBB9CA400FD50
3 changed files with 9 additions and 6 deletions
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4
hadoop-common-project/hadoop-common/HadoopCommon.cmake
View File

@ -193,7 +193,7 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
elseif(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
# Solaris flags. 64-bit compilation is mandatory, and is checked earlier.
hadoop_add_compiler_flags("-m64 -D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS")
set(CMAKE_CXX_FLAGS "-std=gnu++98 ${CMAKE_CXX_FLAGS}")
set(CMAKE_CXX_STANDARD 98)
hadoop_add_linker_flags("-m64")
# CMAKE_SYSTEM_PROCESSOR is set to the output of 'uname -p', which on Solaris is
@ -212,4 +212,4 @@ elseif(CMAKE_SYSTEM_NAME STREQUAL "SunOS")
endif()
# Set GNU99 as the C standard to use
set(CMAKE_C_FLAGS "-std=gnu99 ${CMAKE_C_FLAGS}")
set(CMAKE_C_STANDARD 99)

3
hadoop-hdfs-project/hadoop-hdfs-native-client/src/CMakeLists.txt
View File

@ -151,7 +151,8 @@ add_subdirectory(main/native/libhdfs-examples)
# Temporary fix to disable Libhdfs++ build on older systems that do not support thread_local
include(CheckCXXSourceCompiles)
unset (THREAD_LOCAL_SUPPORTED CACHE)
set (CMAKE_REQUIRED_DEFINITIONS "-std=c++11")
set (CMAKE_CXX_STANDARD 11)
set (CMAKE_CXX_STANDARD_REQUIRED ON)
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
check_cxx_source_compiles(
"#include <thread>

8
hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/CMakeLists.txt
View File

@ -51,7 +51,8 @@ include(CheckCXXSourceCompiles)
# Check if thread_local is supported
unset (THREAD_LOCAL_SUPPORTED CACHE)
set (CMAKE_REQUIRED_DEFINITIONS "-std=c++11")
set (CMAKE_CXX_STANDARD 11)
set (CMAKE_CXX_STANDARD_REQUIRED ON)
set (CMAKE_REQUIRED_LIBRARIES ${CMAKE_THREAD_LIBS_INIT})
check_cxx_source_compiles(
"#include <thread>
@ -147,12 +148,13 @@ set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0")
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0")
if(UNIX)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic -std=c++11 -g -fPIC -fno-strict-aliasing")
set (CMAKE_CXX_STANDARD 11)
set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -pedantic -g -fPIC -fno-strict-aliasing")
set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g -fPIC -fno-strict-aliasing")
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(CMAKE_CXX_STANDARD 11)
add_definitions(-DASIO_HAS_STD_ADDRESSOF -DASIO_HAS_STD_ARRAY -DASIO_HAS_STD_ATOMIC -DASIO_HAS_CSTDINT -DASIO_HAS_STD_SHARED_PTR -DASIO_HAS_STD_TYPE_TRAITS -DASIO_HAS_VARIADIC_TEMPLATES -DASIO_HAS_STD_FUNCTION -DASIO_HAS_STD_CHRONO -DASIO_HAS_STD_SYSTEM_ERROR)
endif ()