Hi! Matthias filed to PRs about missing *.def files that are needed by plugins, and my grep found another case (c6x; well, I actually found even the aarch64 issue after seeing the m68k report, then found aarch64 has been already filed). The problem is that the HeaderInclude header includes on these targets some *.def files. The standard way to tell the Makefiles about these is OPTIONS_H_EXTRA, which fixes this.
Bootstrapped/regtested on aarch64-linux, Matthias tested it on m68k-linux, c6x is untested, but obvious. Ok for trunk? 2016-02-22 Jakub Jelinek <ja...@redhat.com> PR target/69894 PR target/69895 * config/m68k/t-opts (OPTIONS_H_EXTRA): Add m68k-microarchs.def and m68k-devices.def. * config/c6x/t-c6x (OPTIONS_H_EXTRA): Add c6x-isas.def. * config/aarch64/t-aarch64 (OPTIONS_H_EXTRA): Add aarch64-arches.def. --- gcc/config/m68k/t-opts.jj 2011-05-02 18:39:25.000000000 +0200 +++ gcc/config/m68k/t-opts 2016-02-22 09:21:44.420267750 +0100 @@ -1,3 +1,6 @@ +OPTIONS_H_EXTRA += $(srcdir)/config/m68k/m68k-microarchs.def \ + $(srcdir)/config/m68k/m68k-devices.def + $(srcdir)/config/m68k/m68k-tables.opt: $(srcdir)/config/m68k/genopt.sh \ $(srcdir)/config/m68k/m68k-devices.def $(srcdir)/config/m68k/m68k-isas.def \ $(srcdir)/config/m68k/m68k-microarchs.def --- gcc/config/c6x/t-c6x.jj 2016-01-04 14:55:54.000000000 +0100 +++ gcc/config/c6x/t-c6x 2016-02-22 09:25:56.272819642 +0100 @@ -23,6 +23,8 @@ MD_INCLUDES= $(srcdir)/config/c6x/const $(srcdir)/config/c6x/c6x-mult.md \ $(srcdir)/config/c6x/c6x-sched.md +OPTIONS_H_EXTRA += $(srcdir)/config/c6x/c6x-isas.def + s-config s-conditions s-flags s-codes s-constants s-emit s-recog s-preds \ s-opinit s-extract s-peep s-attr s-attrtab s-output: $(MD_INCLUDES) --- gcc/config/aarch64/t-aarch64.jj 2016-01-04 14:55:56.000000000 +0100 +++ gcc/config/aarch64/t-aarch64 2016-02-22 09:30:03.656432719 +0100 @@ -19,7 +19,8 @@ # <http://www.gnu.org/licenses/>. TM_H += $(srcdir)/config/aarch64/aarch64-cores.def -OPTIONS_H_EXTRA += $(srcdir)/config/aarch64/aarch64-cores.def +OPTIONS_H_EXTRA += $(srcdir)/config/aarch64/aarch64-cores.def \ + $(srcdir)/config/aarch64/aarch64-arches.def $(srcdir)/config/aarch64/aarch64-tune.md: $(srcdir)/config/aarch64/gentune.sh \ $(srcdir)/config/aarch64/aarch64-cores.def Jakub