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4543a3bde2
d1bd01e189 Merge bitcoin-core/minisketch#98: misc: drop trailing whitespace fe2c88a4fd misc: drop trailing whitespace f74b7e2bc2 Merge sipa/minisketch#75: build: Introduce CMake-based build system 850cc868d5 ci: Add GHA workflow with native Windows job 40d56708c8 doc: Add "Building with CMake" section to `README.md` a0c86c79a7 build: Add CMake-based build system git-subtree-dir: src/minisketch git-subtree-split: d1bd01e189e745cd1828707e0a7004b6a6909650
44 lines
967 B
CMake
44 lines
967 B
CMake
include_guard(GLOBAL)
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include(CheckCXXSourceCompiles)
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include(CMakePushCheckState)
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cmake_push_check_state(RESET)
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# Check for clmul instructions support.
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if(NOT CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
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set(CMAKE_REQUIRED_FLAGS "-mpclmul")
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endif()
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check_cxx_source_compiles("
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#include <immintrin.h>
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#include <stdint.h>
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int main()
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{
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__m128i a = _mm_cvtsi64_si128((uint64_t)7);
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__m128i b = _mm_clmulepi64_si128(a, a, 37);
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__m128i c = _mm_srli_epi64(b, 41);
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__m128i d = _mm_xor_si128(b, c);
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uint64_t e = _mm_cvtsi128_si64(d);
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return e == 0;
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}
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" HAVE_CLMUL
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)
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if(HAVE_CLMUL)
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set(CLMUL_CXXFLAGS ${CMAKE_REQUIRED_FLAGS})
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endif()
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if(CMAKE_CXX_STANDARD LESS 20)
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# Check for working clz builtins.
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check_cxx_source_compiles("
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int main()
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{
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unsigned a = __builtin_clz(1);
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unsigned long b = __builtin_clzl(1);
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unsigned long long c = __builtin_clzll(1);
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}
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" HAVE_CLZ
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)
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endif()
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cmake_pop_check_state()
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