On Sat, 28 May 2011 14:51:36 -0700, Jameson Graef Rollins <jroll...@finestructure.net> wrote: > The configure script tries to check that the libdir is included in the > ldconfig paths, and then sets the RPATH compiler flag if it's not. > This check was broken, and was always setting RPATH. This fixes the > path check.
Thanks for the patch. I was intrigued about what was actually broken here, so tracked down the problem and fixed it with an alternate patch (see below). -Carl commit 574f408816e636f677b14384c18cc2e388991411 Author: Carl Worth <cwo...@cworth.org> Date: Wed Jun 1 13:02:58 2011 -0700 configure: Fix detection of libdir in ldconfig configuration Ever since commit b4b5e9ce4dac62111ec11da6d22b7e618056801f the detection of libdir in the ldconfig configuration has been broken, resulting in RPATH being set when not needed and not wanted. The cause was a change from an IFS setting of: IFS="$(printf '\n\t')" to a new setting of: IFS="$(printf '\n')" That looks desirable since we want to split the output of ldconfig based on newlines, (and not split on any filename that might have an embedded tab in it). The subtle bug in the above is that the shell trims any trailing newlines when performing command substitution so the final statement above was equivalent to: IFS='' which prevented any splitting of the ldconfig output at all. Fix this by avoiding command substitution and just using a literal newline in the source file for setting this variable. diff --git a/configure b/configure index bbf30cd..cf525c9 100755 --- a/configure +++ b/configure @@ -355,17 +355,30 @@ elif [ $uname = "Linux" ] ; then printf "Linux\n" platform=LINUX linker_resolves_library_dependencies=1 + + printf "Checking for $libdir_expanded in ldconfig... " ldconfig_paths=$(/sbin/ldconfig -N -X -v 2>/dev/null | sed -n -e 's,^\(/.*\):\( (.*)\)\?$,\1,p') # Separate ldconfig_paths only on newline (not on any potential - # embedded space characters in any filenames). + # embedded space characters in any filenames). Note, we use a + # literal newline in the source here rather than something like: + # + # IFS=$(printf '\n') + # + # because the shell's command substitution deletes any trailing newlines. OLD_IFS=$IFS - IFS="$(printf '\n')" + IFS=" +" for path in $ldconfig_paths; do if [ "$path" = "$libdir_expanded" ]; then libdir_in_ldconfig=1 fi done IFS=$OLD_IFS + if [ "$libdir_in_ldconfig" = '0' ]; then + printf "No (will set RPATH)\n" + else + printf "Yes\n" + fi else printf "Unknown.\n" cat <<EOF
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