leif wrote: > On 04/22/2015 05:30 AM, leif wrote: >> Release of GCC 5.1 is scheduled for Wednesday, April 22nd. > > It's out now: > > https://gcc.gnu.org/ml/gcc/2015-04/msg00287.html > > > The errors with ncurses and gf2x remain. 8-/ > >> I took the first release candidate and tried to build Sage 6.6 with it: >> >> * ncurses (a superfluous package anyway) fails to build with >> a syntax error(!) -- apparently a bug in the preprocessor, >> will hopefully vanish with the final; >> setting CPP to use another one works >>
It's not a bug, it's a new feature! (Apparently.) Fixed. I'll open a ticket later. For the impatient: $ cat build/pkgs/ncurses/patches/ncurses-5.9.20131221_work_around_broken_GNU_cpp_5.x.patch Building ncurses with GCC 5.1 (or more precisely, with its 'cpp') fails with a syntax error, caused by earlier preprocessing. (I'm not entirely sure whether it's a GCC bug or rather caused by a new feature which breaks further processing with 'awk' and 'sed'; I *think* at least the 'awk' inline script "AW2" simply isn't prepared for the changed output of 'cpp' w.r.t. line directives [1]. Anyway, the patch fixes the issue.) [1] https://gcc.gnu.org/gcc-5/porting_to.html --- ncurses-5.9.20131221/ncurses/base/MKlib_gen.sh 2011-06-04 21:14:08.000000000 +0200 +++ ncurses-5.9.20131221/ncurses/base/MKlib_gen.sh 2015-04-26 00:47:06.911680782 +0200 @@ -62,7 +62,15 @@ if test "${LC_CTYPE+set}" = set; then LC_CTYPE=C; export LC_CTYPE; fi if test "${LC_COLLATE+set}" = set; then LC_COLLATE=C; export LC_COLLATE; fi -preprocessor="$1 -DNCURSES_INTERNALS -I../include" +# Work around "unexpected" output of GCC 5.1.0's cpp w.r.t. #line directives +# by simply suppressing them: +case `$1 -dumpversion 2>/dev/null` in + 5.[01].*) # assume a "broken" one + preprocessor="$1 -P -DNCURSES_INTERNALS -I../include" + ;; + *) + preprocessor="$1 -DNCURSES_INTERNALS -I../include" +esac AWK="$2" USE="$3" -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
