+case "$site_prefixes" in *:* ) site_prefixes="`echo '' $site_prefixes | sed -e 's/^ //' -e 's/:/ /g'`";; esac
+if test -n "$site_prefixes"; then
+ for dir in $site_prefixes; do
+ inc_dir="${dir}/include"
+ lib_dir="${dir}/lib"
+ if test ! -d "$dir"; then
+ { echo "Invalid site prefix \`$dir': no such directory" >&2; exit 1; }
+ elif test ! -d "$inc_dir"; then
+ { echo "Invalid site prefix \`$dir': no such directory \`$inc_dir'" >&2; exit 1; }
+ elif test ! -d "$lib_dir"; then
+ { echo "Invalid site prefix \`$dir': no such directory \`$lib_dir'" >&2; exit 1; }
+ else
+ c_switch_site="$c_switch_site "-I$inc_dir"" && if test "$extra_verbose" = "yes"; then echo " Appending \""-I$inc_dir"\" to \$c_switch_site"; fi
+ ld_switch_site="$ld_switch_site "-L$lib_dir"" && if test "$extra_verbose" = "yes"; then echo " Appending \""-L$lib_dir"\" to \$ld_switch_site"; fi
+ fi
+ done
+fi
+