Fix depfiles compatibility with modern Automake.

[dxcommon.git] / snippet / autotest.mk

diff --git a/snippet/autotest.mk b/snippet/autotest.mk
index 04643f13e7907fc910f7b15c127563d0a87cd02d..0a10c9f792b688b4b4b666153908d81fce4c7f09 100644 (file)
--- a/snippet/autotest.mk
+++ b/snippet/autotest.mk
@@ -1,4 +1,4 @@
-# Copyright © 2015 Nick Bowler
+# Copyright © 2015,2019 Nick Bowler
 #
 # Automake fragment to hook up a basic Autotest test suite into the build.
 # It is expected that a testsuite.at file exists in $(srcdir).  The
@@ -46,24 +46,55 @@ package.m4:
        ; } >$@.tmp
        $(AM_V_at) mv -f $@.tmp $@
 
-testsuite: testsuite.at package.m4
-if !HAVE_AUTOTEST
-       @:; { \
+DX_AUTOTEST_ERROR = @:; { \
          printf 'ERROR: Autotest was not available at configure time.\n'; \
          printf 'You should only need it if you modified the test suite.\n'; \
          printf 'Autotest is part of autom4te, included in the GNU\n'; \
          printf 'Autoconf package: <https://gnu.org/s/autoconf/>\n'; \
-       } 1>&2
-       @false
+       } 1>&2; false
+
+DX_ATFLAGS = -I$(srcdir) $(ATFLAGS)
+
+testsuite: testsuite.at package.m4
+if !HAVE_AUTOTEST
+       $(DX_AUTOTEST_ERROR)
 endif
-       $(AM_V_GEN) $(AUTOTEST) $(ATFLAGS) -p m4_include -o $@.tmp testsuite.at
+       $(AM_V_GEN) $(AUTOTEST) $(DX_ATFLAGS) -p m4_include -o $@.tmp \
+         testsuite.at
        $(AM_V_at) :; { \
-         $(AUTOTEST) $(ATFLAGS) -t m4_include:'$@: $$1' testsuite.at; \
-         $(AUTOTEST) $(ATFLAGS) -t m4_include:'$$1:' testsuite.at; \
+         $(AUTOTEST) $(DX_ATFLAGS) -t m4_include:'$@: $$1' testsuite.at; \
+         $(AUTOTEST) $(DX_ATFLAGS) -t m4_include:'$$1:' testsuite.at; \
        } >$(DEPDIR)/$(@F).P
        $(AM_V_at) mv -f $@.tmp $@
 
-EXTRA_DIST += testsuite testsuite.at package.m4
+testsuite.deps: testsuite
+if !HAVE_AUTOTEST
+       $(DX_AUTOTEST_ERROR)
+endif
+       $(AM_V_GEN) $(AUTOTEST) $(DX_ATFLAGS) -t m4_include:'$$1' -o $@.tmp \
+         testsuite.at
+       $(AM_V_at) mv -f $@.tmp $@
+
+dist-hook: dist-autotest-deps
+dist-autotest-deps: testsuite.deps
+       exec 3<$?; while read f <&3; do \
+         dir=`expr "$$f" : '\(.*\)/'`; \
+         $(MKDIR_P) "$(distdir)/$$dir" && \
+         chmod u+w "$(distdir)/$$dir" && \
+         cp -p "$(srcdir)/$$f" "$(distdir)/$$f" || exit; \
+       done
+.PHONY: dist-autotest-deps
+
+EXTRA_DIST += testsuite testsuite.at testsuite.deps package.m4
 DISTCLEANFILES += atconfig $(DEPDIR)/testsuite.P
 
 @AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/testsuite.P@am__quote@
+
+# Automake 1.16 and newer use make rules to generate the dependency stubs.
+# we must hook those which is kind of annoying to do.  This should be harmless
+# on previous versions which generate the stubs directly in config.status.
+_dx_autotest_depfiles = am--depfiles
+$(_dx_autotest_depfiles): $(DEPDIR)/testsuite.P
+$(DEPDIR)/testsuite.P:
+       @$(MKDIR_P) $(@D)
+       @echo '# dummy' >$@-t && mv -f $@-t $@