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CMake: Use check_symbol_exists instead of check_cxx_symbol_exists.

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check_cxx_symbol_exists requires CMake 2.8.6, so even though I
recommended it to Owen it's probably better to stay away for now.
This check is not technically correct because we're checking <math.h>
but then using <cmath> in the actual code, but if we run into problems we
can do the same sort of dance as isinf() and isnan() where we check /both/
headers and then write a wrapper header around them.

llvm-svn: 174773
This commit is contained in:
Jordan Rose 2013-02-08 23:17:31 +00:00
parent 91f9b50b1c
commit 3f1e87dccf
1 changed files with 6 additions and 7 deletions
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13
cmake/config-ix.cmake
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@ -7,7 +7,6 @@ include(CheckIncludeFile)
include(CheckLibraryExists)
include(CheckSymbolExists)
include(CheckFunctionExists)
include(CheckCXXSymbolExists)
include(CheckCXXSourceCompiles)
include(TestBigEndian)
@ -120,12 +119,12 @@ check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H)
check_symbol_exists(ceilf math.h HAVE_CEILF)
check_symbol_exists(floorf math.h HAVE_FLOORF)
check_symbol_exists(fmodf math.h HAVE_FMODF)
check_cxx_symbol_exists(log cmath HAVE_LOG)
check_cxx_symbol_exists(log2 cmath HAVE_LOG2)
check_cxx_symbol_exists(log10 cmath HAVE_LOG10)
check_cxx_symbol_exists(exp cmath HAVE_EXP)
check_cxx_symbol_exists(exp2 cmath HAVE_EXP2)
check_cxx_symbol_exists(exp10 cmath HAVE_EXP10)
check_symbol_exists(log math.h HAVE_LOG)
check_symbol_exists(log2 math.h HAVE_LOG2)
check_symbol_exists(log10 math.h HAVE_LOG10)
check_symbol_exists(exp math.h HAVE_EXP)
check_symbol_exists(exp2 math.h HAVE_EXP2)
check_symbol_exists(exp10 math.h HAVE_EXP10)
if( HAVE_SETJMP_H )
check_symbol_exists(longjmp setjmp.h HAVE_LONGJMP)
check_symbol_exists(setjmp setjmp.h HAVE_SETJMP)