maint: fix distclean-check failure due to THANKS

* Makefile.am: Remove our dependence on src/sort which
induces awkward dependencies for `make dist` since
THANKS will be rebuilt once src/sort is newer.
Instead we remove the problematic -f option to sort
which actually doesn't change the order given
our current input.

diff --git a/Makefile.am b/Makefile.am
index f5543ddb919b2d30c8a7cc91a477c080d29c65ce..cc4fde7aa2f683619b78b500f4dc0b71f62521dc 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -163,7 +163,10 @@ prologue = perl -ne '/^\#\#/ and exit; print' $(srcdir)/THANKS.in
 #   $ test 'abácad' = "$(printf '%s\n' 'ab' 'ác' 'ad' \
 #                          | LC_ALL=en_US.UTF-8 sort -f \
 #                          | tr -d '\n')" && echo GOOD || echo BAD
-THANKS: THANKS.in Makefile.am .mailmap thanks-gen .version src/sort
+# Note we don't enable case folding (-f) in the sort below, due to bugs
+# in the I18N patch used in many distros (as of 2015).  Also using our
+# own src/sort here would induce awkward dependencies for `make dist`.
+THANKS: THANKS.in Makefile.am .mailmap thanks-gen .version
        $(AM_V_GEN)rm -f $@-t $@;                                       \
        {                                                               \
          $(prologue); echo;                                            \
@@ -172,7 +175,7 @@ THANKS: THANKS.in Makefile.am .mailmap thanks-gen .version src/sort
            git log --pretty=format:'%aN%x00%aE'                        \
              | $(ASSORT) -u;                                           \
          } | $(srcdir)/thanks-gen                                      \
-           | LC_ALL=en_US.UTF-8 src/sort -f -k1,1;                     \
+           | LC_ALL=en_US.UTF-8 sort -k1,1;                            \
          echo;                                                         \
          printf ';; %s\n' 'Local Variables:' 'coding: utf-8' End:;     \
        } > $@-t && chmod a-w $@-t && mv $@-t $@