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Using add_definitions, workaround cmake warning

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We haven't been building LLVM in-tree for many months now so we can use this now
just fine.
This commit is contained in:
Strahinja Val Markovic 2013-10-01 11:03:55 -07:00
parent fe94ed6b1c
commit f56ced6374
1 changed files with 6 additions and 7 deletions
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13
cpp/CMakeLists.txt
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@ -138,19 +138,18 @@ endif()
# the compiler to output a warning during linking: # the compiler to output a warning during linking:
# clang: warning: argument unused during compilation: '-std=c++0x' # clang: warning: argument unused during compilation: '-std=c++0x'
# This is caused by cmake passing this flag to the linking stage which it # This is caused by cmake passing this flag to the linking stage which it
# shouldn't do. It's ignored so it does no harm, but the warning is annoying and # shouldn't do. It's ignored so it does no harm, but the warning is annoying.
# there's no way around the problem (the flag is correctly used during the #
# compilation stage). We could use add_definitions(-std=c++0x), but this will # Putting the flag in add_definitions() works around the issue, even though it
# break the llvm build since the flag will then be used when compiling C code # shouldn't in theory go there.
# too. Sadly there's no way around the warning.
if ( CPP11_AVAILABLE ) if ( CPP11_AVAILABLE )
message( "Your C++ compiler supports C++11, compiling in that mode." ) message( "Your C++ compiler supports C++11, compiling in that mode." )
# Cygwin needs its hand held a bit; see issue #473 # Cygwin needs its hand held a bit; see issue #473
if ( CYGWIN AND CMAKE_COMPILER_IS_GNUCXX ) if ( CYGWIN AND CMAKE_COMPILER_IS_GNUCXX )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++0x" ) add_definitions( -std=gnu++0x )
else() else()
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x" ) add_definitions( -std=c++0x )
endif() endif()
else() else()
message( message(