From 560c0068541315002ec4c1c00a560bbd30f2d671 Mon Sep 17 00:00:00 2001
From: Darren Tucker <dtucker@zip.com.au>
Date: Wed, 17 Aug 2016 13:38:30 +1000
Subject: Add a section for compiler specifics.

Add a section for compiler specifics and document the runtime requirements
for clang's integer sanitization.
---
 INSTALL | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'INSTALL')

diff --git a/INSTALL b/INSTALL
index d3db6206c..dc996f8a7 100644
--- a/INSTALL
+++ b/INSTALL
@@ -1,6 +1,11 @@
-1. Prerequisites
 ----------------
 
+A C compiler.  Any C89 or better compiler should work.  Where supported,
+configure will attempt to enable the compiler's run-time integrity checking
+options.  Some notes about specific compilers:
+ - clang: -ftrapv and -sanitize=integer require the compiler-rt runtime
+  (--with-ldflags=--rtlib=compiler-rt)
+
 You will need working installations of Zlib and libcrypto (LibreSSL /
 OpenSSL)
 
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