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added warning for AMD users

This commit is contained in:
Rick V 2019-03-05 16:05:00 -06:00
parent 61fb9a9c82
commit 53f7360094
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1 changed files with 7 additions and 0 deletions
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7
CMakeLists.txt
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@ -7,6 +7,7 @@ project(${PROJECT_NAME} C CXX ASM)
# Core options
option(USE_AVX2 "enable avx2 code" )
option(USE_NETNS "enable networking namespace support. Linux only" )
option(AMD_RYZEN_HACK "hack for AMD Ryzen FPU bug (support FMA3 and FMA4 in FPU, but does not show in CPUID)" )
option(STATIC_LINK_RUNTIME "link statically against compiler runtime, standard library and pthreads")
option(NON_PC_TARGET "non-pc target build: iphone, andriod, embedded non-i386 SBC, etc" )
option(SHADOW "use shadow testing framework. linux only" )
@ -122,6 +123,12 @@ elseif(NOT ANDROID AND NOT NON_PC_TARGET)
endif()
endif()
# only needed if using AVX2
if(AMD_RYZEN_HACK AND USE_AVX2)
set(CRYPTO_FLAGS -march=native -mfpmath=sse -mavx -mavx2 -mfma)
message(WARNING "This option may be removed in a future release. Contact your computer manufacturer for updated ROMs or microcode patches.")
endif(AMD_RYZEN_HACK AND USE_AVX2)
set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
set(THREADS_PREFER_PTHREAD_FLAG TRUE)
find_package(Threads REQUIRED)