[MacPorts] #51815: librsvg @2.40.16 does not build on PPC Mac OS X 10.5.8, Leopard, because of "./libtool: eval: line 1085: syntax error near unexpected token `|' "

[MacPorts]

#51815: librsvg @2.40.16 does not build on PPC Mac OS X 10.5.8, Leopard, because of
"./libtool: eval: line 1085: syntax error near unexpected token `|' "
------------------------------+--------------------------------
  Reporter:  Peter_Dyballa@…  |      Owner:  macports-tickets@…
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.3.4
Resolution:                   |   Keywords:
      Port:  librsvg          |
------------------------------+--------------------------------
Changes (by ryandesign@…):

 * cc: jeremyhu@… (added)


Comment:

 Replying to [ticket:51815 Peter_Dyballa@…]:
 > but I have no idea how to test libtool, I even do not understand how the
 text is output… But it's obvious that this is being evaluated:
 >
 > {{{
 >   407         # The commands to list exported symbols.
 >   408         export_symbols_cmds="\$NM \$libobjs \$convenience |
 \$global_symbol_pipe | \$SED 's/.* //' | sort | uniq > \$export_symbols"
 > }}}
 >
 > And $global_symbol_pipe is defined as:
 >
 > {{{
 >   172         # Take the output of nm and produce a listing of raw
 symbols and C names.
 >   173         global_symbol_pipe=""
 > }}}
 >
 > So defining export_symbols_cmds as
 >
 > {{{
 >   407         # The commands to list exported symbols.
 >   408         export_symbols_cmds="\$NM \$libobjs \$convenience | \$SED
 's/.* //' | sort | uniq > \$export_symbols"
 > }}}
 >
 > should work properly.

 Well no. If global_symbol_pipe is empty, then the command being evaluated
 is:

 {{{
 export_symbols_cmds="$NM $libobjs $convenience | | $SED 's/.* //' | sort |
 uniq > $export_symbols"
 }}}

 The double pipe is what leads to the error message about the unexpected
 pipe symbol. I would say it was never intended for global_symbol_pipe to
 be empty, and the fact that global_symbol_pipe is empty in your case is
 what needs to be fixed.

 This problem was [https://lists.gnu.org/archive/html/bug-
 libtool/2015-07/msg00000.html described on the libtool mailing list]
 before. It seems to be a problem with nm, and that the configure script
 does not exit after detecting nm's failure to parse the compiler's output.

-- 
Ticket URL: <https://trac.macports.org/ticket/51815#comment:2>
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