Modernize LTO support in CMake

RoaringBitmap / CRoaring

Roaring bitmaps in C (and C++), with SIMD (AVX2, AVX-512 and NEON) optimizations: used by Apache Doris, ClickHouse, and StarRocks

http://roaringbitmap.org/

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Modernize LTO support in CMake #205

Open lemire opened 5 years ago

lemire commented 5 years ago

Should be as simple as...

cmake_minimum_required(VERSION 3.9) # CMP0069 NEW
include(CheckIPOSupported)
check_ipo_supported(RESULT ltoresult)
if(ltoresult)
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
endif()

lemire commented 5 years ago

We just need to verify that it works.