Bump to m4 1.4.19

[platform/upstream/m4.git] / Makefile.am

diff --git a/Makefile.am b/Makefile.am
index c35d129..d54ace4 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,7 @@
 ## Makefile.am - template for generating Makefile via Automake
 ##
-## Copyright (C) 2000-2001, 2003-2011 Free Software Foundation, Inc.
+## Copyright (C) 2000-2001, 2003-2014, 2016-2017, 2020-2021 Free
+## Software Foundation, Inc.
 ##
 ## This file is part of GNU M4.
 ##
@@ -15,18 +16,14 @@
 ## GNU General Public License for more details.
 ##
 ## You should have received a copy of the GNU General Public License
-## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+## along with this program.  If not, see <https://www.gnu.org/licenses/>.
 ##
 ## Written by Gary V. Vaughan <gary@gnu.org>
 
-SUBDIRS = . examples lib src doc checks tests
-
-syntax_check_exceptions =              \
-  .x-sc_prohibit_tab_based_indentation \
-  .x-update-copyright
+SUBDIRS = . examples lib src doc checks po tests
 
 EXTRA_DIST = bootstrap c-boxes.el cfg.mk maint.mk \
-       .prev-version .version m4/gnulib-cache.m4 $(syntax_check_exceptions)
+       .prev-version .version m4/gnulib-cache.m4 ChangeLog-2014
 DISTCLEANFILES = stamp-h
 ## maintainer-clean should remove as much as possible that ./bootstrap can
 ## recreate.  In the m4 directory, keep only gnulib-cache.m4.
@@ -41,11 +38,33 @@ ACLOCAL_AMFLAGS = -I m4
 DISTCHECK_CONFIGURE_FLAGS = --enable-changeword --program-prefix=g \
        --enable-gcc-warnings --enable-silent-rules --enable-cxx
 
+# Generate the ChangeLog from git history.
+gen_start_date = 2015-01-01
+.PHONY: gen-ChangeLog
+gen-ChangeLog:
+       $(AM_V_GEN)if test -d $(top_srcdir)/.git; then                  \
+         log_fix="$(srcdir)/build-aux/git-log-fix";                    \
+         test -e "$$log_fix"                                           \
+           && amend_git_log="--amend=$$log_fix"                        \
+           || amend_git_log=;                                          \
+         $(top_srcdir)/build-aux/gitlog-to-changelog $$amend_git_log   \
+          --since='$(gen_start_date)' > $(distdir)/cl-t                \
+         && rm -f $(distdir)/ChangeLog                                 \
+         && mv $(distdir)/cl-t $(distdir)/ChangeLog;                   \
+       fi
+
+# Dummy rule, to pacify automake "gnu" strictness and allow a clean
+# bootstrap.  Creates a dummy ChangeLog (unless one is already present,
+# as might be the case for users of vc-dwim) that will be overridden
+# with a proper one at distribution time.
+$(srcdir)/ChangeLog:
+       @echo dummy > $@
+
 BUILT_SOURCES = $(top_srcdir)/.version
 $(top_srcdir)/.version:
        echo $(VERSION) > $@-t && mv $@-t $@
 
 # Arrange so that .tarball-version appears only in the distribution
 # tarball, and never in a checked-out repository.
-dist-hook:
-       echo $(VERSION) > $(distdir)/.tarball-version
+dist-hook: gen-ChangeLog
+       $(AM_V_GEN)echo $(VERSION) > $(distdir)/.tarball-version