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Check for libc++ before using it.

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Fixes #731.
This commit is contained in:
Strahinja Val Markovic 2013-12-17 18:35:03 -08:00
parent f5b1fd9d77
commit 737109e7aa
1 changed files with 5 additions and 2 deletions
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7
cpp/CMakeLists.txt
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@ -67,8 +67,11 @@ endif()
if ( CMAKE_CXX_COMPILER_ID STREQUAL "Clang" )
set( COMPILER_IS_CLANG true )
# The Travis CI build machines don't have libc++ installed
if ( NOT DEFINED ENV{TRAVIS} )
# Linux machines don't necessarily have libc++ installed alongside clang,
# but HAS_LIBCXX11 doesn't always trigger for machines that DO have libc++. We
# know that at least all the Mac OS versions we support that use Clang have
# libc++, so we're safe there.
if ( HAS_LIBCXX11 OR APPLE )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++" )
endif()