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Adapt cmake build to use c++11 features also for clang compiler

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This commit is contained in:
Kornel Benko 2013-12-15 11:41:28 +01:00
parent ed1ef9d740
commit 499c5cfe57
2 changed files with 99 additions and 4 deletions
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8
CMakeLists.txt
View File

@ -213,11 +213,11 @@ if(UNIX OR MINGW)
set(LYX_USE_TR1_REGEX 0)
endif()
if (LYX_ENABLE_CXX11)
if(GCC_VERSION VERSION_GREATER 4.7)
set(LYX_GCC11_MODE "-std=gnu++11")
elseif(GCC_VERSION VERSION_GREATER 4.2)
set(LYX_GCC11_MODE "-std=gnu++0x")
find_package(CXX11Compiler)
if(NOT CXX11COMPILER_FOUND)
message(FATAL_ERROR "A C++11 compatible compiler is required.")
endif()
set(LYX_GCC11_MODE "${CXX11_FLAG}")
endif()
else()
if(MSVC10)

95
development/cmake/modules/FindCXX11Compiler.cmake Normal file
View File

@ -0,0 +1,95 @@
# This file is part of lyx.
#
# The module comes from the enblend project, slightly modified.
#
# Check if compiler supports C++11 features
# and which compiler switches are necessary
# CXX11_FLAG : contains the necessary compiler flag
#
# Copyright (c) 2013 Thomas Modes <tmodes@@users.sourceforge.net>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# This file is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with lyx; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
INCLUDE(CheckCXXSourceCompiles)
INCLUDE(FindPackageHandleStandardArgs)
if (CMAKE_CXX_COMPILER MATCHES "clang")
set(CXX11_FLAG_CANDIDATES "--std=c++11")
else()
set(CXX11_FLAG_CANDIDATES
"--std=gnu++11"
"--std=c++11"
"--std=gnu++0x"
)
endif()
# sample openmp source code to test
SET(CXX11_TEST_SOURCE
"
template <typename T>
struct check
{
static_assert(sizeof(int) <= sizeof(T), \"not big enough\");
};
typedef check<check<bool>> right_angle_brackets;
class TestDeleted
{
public:
TestDeleted() = delete;
};
int a;
decltype(a) b;
typedef check<int> check_type;
check_type c;
check_type&& cr = static_cast<check_type&&>(c);
auto d = a;
int main() {
return 0;
};
")
# check c compiler
FOREACH(FLAG ${CXX11_FLAG_CANDIDATES})
SET(SAFE_CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS}")
SET(CMAKE_REQUIRED_FLAGS "${FLAG}")
UNSET(CXX11_FLAG_DETECTED CACHE)
CHECK_CXX_SOURCE_COMPILES("${CXX11_TEST_SOURCE}" CXX11_FLAG_DETECTED)
SET(CMAKE_REQUIRED_FLAGS "${SAFE_CMAKE_REQUIRED_FLAGS}")
IF(CXX11_FLAG_DETECTED)
SET(CXX11_FLAG "${FLAG}")
BREAK()
ENDIF()
ENDFOREACH()
# handle the standard arguments for find_package
FIND_PACKAGE_HANDLE_STANDARD_ARGS(CXX11Compiler DEFAULT_MSG CXX11_FLAG)
MARK_AS_ADVANCED(CXX11_FLAG)