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# Copyright (C) 2009 David Sugar, Tycho Softworks
#
# This file is free software; as a special exception the author gives
# unlimited permission to copy and/or distribute it, with or without
# modifications, as long as this notice is preserved.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
if (NOT UCOMMON_LIBS AND NOT UCOMMON_FLAGS)
include(CheckCCompilerFlag)
if(CMAKE_COMPILER_IS_GNUCXX)
set(UCOMMON_VISIBILITY_FLAG "-fvisibility=hidden")
if(MINGW OR MSYS)
set(CHECK_FLAGS -Wno-long-long -mthreads -fvisibility-inlines-hidden)
else()
if(CMAKE_SYSTEM MATCHES "SunOS.*")
set(CHECK_FLAGS -Wno-long-long -mt -fvisibility-inlines-hidden)
else()
set(CHECK_FLAGS -Wno-long-long -pthread -mt -fvisibility-inlines-hidden)
endif()
endif()
endif()
if(BUILD_RUNTIME AND WIN32)
set(UCOMMON_FLAGS ${UCOMMON_FLAGS} -DUCOMMON_RUNTIME)
else()
if(BUILD_STATIC)
set(UCOMMON_FLAGS ${UCOMMON_FLAGS} -DUCOMMON_STATIC)
endif()
endif()
# see if we are building with or without std c++ libraries...
if (BUILD_STDLIB)
# for now we assume only newer libstdc++ library
set(UCOMMON_FLAGS ${UCOMMON_FLAGS} -DNEW_STDCPP)
MESSAGE( STATUS "Configuring full ANSI C++ runtime")
elseif (BUILD_OLDLIB)
# for really old libstdc++ libraries...
set(UCOMMON_FLAGS ${UCOMMON_FLAGS} -DOLD_STDCPP)
MESSAGE( STATUS "Configuring compatible C++ runtime")
else()
MESSAGE( STATUS "Configuring minimal C++ runtime")
if(CMAKE_COMPILER_IS_GNUCXX)
set(CHECK_FLAGS ${CHECK_FLAGS} -fno-exceptions -fno-rtti -fno-enforce-eh-specs)
if(MINGW OR MSYS)
set(UCOMMON_LINKING -nodefaultlibs -nostdinc++)
else()
set(UCOMMON_LINKING -nodefaultlibs -nostdinc++)
endif()
endif()
endif()
# check final for compiler flags
foreach(flag ${CHECK_FLAGS})
check_c_compiler_flag(${flag} CHECK_${flag})
if(CHECK_${flag})
set(UCOMMON_FLAGS ${UCOMMON_FLAGS} ${flag})
endif()
endforeach()
# visibility support for linking reduction (gcc >4.1 only so far...)
if(UCOMMON_VISIBILITY_FLAG)
check_c_compiler_flag(${UCOMMON_VISIBILITY_FLAG} CHECK_VISIBILITY)
endif()
if(CHECK_VISIBILITY)
set(UCOMMON_FLAGS ${UCOMMON_FLAGS} ${UCOMMON_VISIBILITY_FLAG} -DUCOMMON_VISIBILITY=1)
else()
set(UCOMMON_FLAGS ${UCOMMON_FLAGS} -DUCOMMON_VISIBILITY=0)
endif()
endif()
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