This is the first patch to put the needed bits in place to eventually allow code

[oota-llvm.git] / cmake / config-ix.cmake

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index ca5e0bfe384cb8ae11ee942aad060732e793a711..3a2b91cc33cf16095f5045dcbae7396010eda6c2 100755 (executable)
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -4,6 +4,11 @@ include(CheckSymbolExists)
 include(CheckFunctionExists)
 include(CheckCXXSourceCompiles)
 
+if( UNIX )
+  # Used by check_symbol_exists:
+  set(CMAKE_REQUIRED_LIBRARIES m)
+endif()
+
 # Helper macros and functions
 macro(add_cxx_include result files)
   set(${result} "")
@@ -84,6 +89,7 @@ check_symbol_exists(isnan cmath HAVE_ISNAN_IN_CMATH)
 check_symbol_exists(isnan math.h HAVE_ISNAN_IN_MATH_H)
 check_symbol_exists(ceilf math.h HAVE_CEILF)
 check_symbol_exists(floorf math.h HAVE_FLOORF)
+check_symbol_exists(nearbyintf math.h HAVE_NEARBYINTF)
 check_symbol_exists(mallinfo malloc.h HAVE_MALLINFO)
 check_symbol_exists(malloc_zone_statistics malloc/malloc.h
                     HAVE_MALLOC_ZONE_STATISTICS)
@@ -136,7 +142,6 @@ function(llvm_find_program name)
     mark_as_advanced(HAVE_${NAME})
   else(LLVM_PATH_${NAME})
     set(HAVE_${NAME} "" CACHE INTERNAL "Is ${name} available ?")
-    unset(LLVM_PATH_${NAME} CACHE)
   endif(LLVM_PATH_${NAME})
 endfunction()