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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#-----------------------------------------------------------------------------
# set some special flags for different compilers
#
if(WIN32 AND CMAKE_C_COMPILER_ID STREQUAL "Intel")
set(_INTEL_WINDOWS 1)
endif()
# Disable deprecation warnings for standard C functions.
# really only needed for newer versions of VS, but should
# not hurt other versions, and this will work into the
# future
if(MSVC OR _INTEL_WINDOWS)
add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
else()
endif()
#silence duplicate symbol warnings on AIX
if(CMAKE_SYSTEM_NAME MATCHES "AIX")
if(NOT CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -bhalt:5 ")
endif()
endif()
if(CMAKE_SYSTEM_NAME MATCHES "IRIX")
if(NOT CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wl,-woff84 -no_auto_include")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-woff15")
endif()
endif()
if(CMAKE_SYSTEM MATCHES "OSF1-V")
if(NOT CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -timplicit_local -no_implicit_include ")
endif()
endif()
if(CMAKE_SYSTEM_NAME MATCHES "HP-UX" AND CMAKE_CXX_COMPILER_ID MATCHES "HP")
# HP aCC since version 3.80 supports the flag +hpxstd98 to get ANSI C++98
# template support. It is known that version 6.25 doesn't need that flag.
# Versions prior to 3.80 will not be able to build CMake. Current assumption:
# it is needed for every version from 3.80 to 4 to get it working.
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4 AND
NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 3.80)
# use new C++ library and improved template support
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -AA +hpxstd98")
endif()
endif()
# Workaround for short jump tables on PA-RISC
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^parisc")
if(CMAKE_COMPILER_IS_GNUCC)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mlong-calls")
endif()
if(CMAKE_COMPILER_IS_GNUCXX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mlong-calls")
endif()
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL SunPro)
if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
if (NOT CMAKE_CXX_STANDARD OR CMAKE_CXX_STANDARD EQUAL 98)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++03")
elseif(CMAKE_VERSION VERSION_LESS 3.8.20170502)
# CMake knows how to add this flag for compilation as C++11,
# but has not been taught that SunPro needs it for linking too.
# Add it in a place that will be used for both.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
endif()
else()
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -library=stlport4")
endif()
endif()
foreach(lang C CXX)
# Suppress warnings from PGI compiler.
if (CMAKE_${lang}_COMPILER_ID STREQUAL "PGI")
set(CMAKE_${lang}_FLAGS "${CMAKE_${lang}_FLAGS} -w")
endif()
endforeach()
# use the ansi CXX compile flag for building cmake
if (CMAKE_ANSI_CXXFLAGS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CMAKE_ANSI_CXXFLAGS}")
endif ()
if (CMAKE_ANSI_CFLAGS)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_ANSI_CFLAGS}")
endif ()
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