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diff --git a/manual/install.texi b/manual/install.texi
index 663f8d5..de1c203 100644
--- a/manual/install.texi
+++ b/manual/install.texi
@@ -402,6 +402,14 @@ the newest version of the compiler that is known to work for building
release time, GCC 5.3 is the newest compiler verified to work to build
@theglibc{}.
+For multi-arch support it is recommended to use a GCC which has been built with
+support for GNU indirect functions. This ensures that correct debugging
+information is generated for functions selected by IFUNC resolvers. This
+support can either be enabled by configuring GCC with
+@samp{--enable-gnu-indirect-function}, or by enabling it by default by setting
+@samp{default_gnu_indirect_function} variable for a particular architecture in
+the GCC source file @file{gcc/config.gcc}.
+
You can use whatever compiler you like to compile programs that use
@theglibc{}.