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-rw-r--r--SetFlags.cmake7
1 files changed, 6 insertions, 1 deletions
diff --git a/SetFlags.cmake b/SetFlags.cmake
index a5bd3a0a2..6a8211fa2 100644
--- a/SetFlags.cmake
+++ b/SetFlags.cmake
@@ -184,8 +184,13 @@ macro(set_exe_flags)
string(REPLACE "-w" "" CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
add_flags_cxx("-Wall -Wextra")
- #we support non-IEEE 754 fpus so can make no guarentees about error
+ # we support non-IEEE 754 fpus so can make no guarentees about error
add_flags_cxx("-ffast-math")
+
+ # clang does not provide the __extern_always_inline macro and a part of libm depends on this when using fast-math
+ if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+ add_flags_cxx("-D__extern_always_inline=inline")
+ endif()
endif()
endmacro()