From 2cc1b3a3ee595c8be761fee309167b8a56393d3e Mon Sep 17 00:00:00 2001
From: Julian Andres Klode <julian.klode@canonical.com>
Date: Sun, 3 Feb 2019 16:39:37 +0100
Subject: Detect function multiversioning and sse4.2/crc32, enables i386

This fixes the build on kfreebsd-amd64, and due to the detection
of sse4.2, should also enable the sse4.2 on i386.
---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0b3cc73de..599c7ec1a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -180,6 +180,11 @@ else()
     set(RESOLV_LIBRARIES -lresolv)
 endif()
 
+# Check multiversioning
+include(CheckCxxTarget)
+check_cxx_target(HAVE_FMV_SSE42_AND_CRC32 "sse4.2" "__builtin_ia32_crc32si(0, 1llu);")
+check_cxx_target(HAVE_FMV_SSE42_AND_CRC32DI "sse4.2" "__builtin_ia32_crc32di(0, 1llu);")
+
 # Configure some variables like package, version and architecture.
 set(PACKAGE ${PROJECT_NAME})
 set(PACKAGE_MAIL "APT Development Team <deity@lists.debian.org>")
-- 
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