X-Git-Url: http://git.draconx.ca/gitweb/dxcommon.git/blobdiff_plain/6c8f7873ed3769c48b3bad95f92e5c32e7f6cec1..157fb6f1bcb5af0d93bb588522bb1be86aa2fd71:/snippet/autotest.mk

diff --git a/snippet/autotest.mk b/snippet/autotest.mk
index 738e321..badfc9f 100644
--- a/snippet/autotest.mk
+++ b/snippet/autotest.mk
@@ -1,4 +1,4 @@
-# Copyright © 2015 Nick Bowler
+# Copyright © 2015,2019-2020 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
@@ -31,10 +31,10 @@ clean-autotest:
 
 maintainer-clean-local: maintainer-clean-autotest
 maintainer-clean-autotest:
-	rm -f testsuite package.m4
+	rm -f testsuite testsuite.deps package.m4
 .PHONY: maintainerclean-autotest
 
-package.m4:
+package.m4: $(top_srcdir)/configure.ac
 	$(AM_V_GEN) :; { \
 	  printf 'm4_define([%s], [%s])\n' \
 	    AT_PACKAGE_NAME      '$(PACKAGE_NAME)' \
@@ -53,27 +53,20 @@ DX_AUTOTEST_ERROR = @:; { \
 	  printf 'Autoconf package: <https://gnu.org/s/autoconf/>\n'; \
 	} 1>&2; false
 
-DX_ATFLAGS = -I$(srcdir) $(ATFLAGS)
+DX_AUTOTEST = $(AUTOTEST) -I$(srcdir) $(ATFLAGS)
 
 testsuite: testsuite.at package.m4
 if !HAVE_AUTOTEST
 	$(DX_AUTOTEST_ERROR)
 endif
-	$(AM_V_GEN) $(AUTOTEST) $(DX_ATFLAGS) -p m4_include -o $@.tmp \
+	$(AM_V_GEN) $(DX_AUTOTEST) -p m4_include -o $@.tmp testsuite.at
+	$(AM_V_at) $(DX_AUTOTEST) -t m4_include:'$$1' -o $@.deps.tmp \
 	  testsuite.at
-	$(AM_V_at) :; { \
-	  $(AUTOTEST) $(DX_ATFLAGS) -t m4_include:'$@: $$1' testsuite.at; \
-	  $(AUTOTEST) $(DX_ATFLAGS) -t m4_include:'$$1:' testsuite.at; \
-	} >$(DEPDIR)/$(@F).P
+	$(AM_V_at) exec 3<$@.deps.tmp 4>$(DEPDIR)/$(@F).P; \
+	  while read f <&3; do printf '$@: %s\n%s:\n' "$$f" "$$f" >&4; done
+	$(AM_V_at) mv -f $@.deps.tmp $@.deps
 	$(AM_V_at) mv -f $@.tmp $@
-
 testsuite.deps: testsuite
-if !HAVE_AUTOTEST
-	$(DX_AUTOTEST_ERROR)
-endif
-	$(AM_V_GEN) $(AUTOTEST) $(DX_ATFLAGS) -t m4_include:'$$1' -o $@.tmp \
-	  testsuite.at
-	$(AM_V_at) mv -f $@.tmp $@
 
 dist-hook: dist-autotest-deps
 dist-autotest-deps: testsuite.deps
@@ -89,3 +82,27 @@ EXTRA_DIST += testsuite testsuite.at testsuite.deps package.m4
 DISTCLEANFILES += atconfig $(DEPDIR)/testsuite.P
 
 @AMDEP_TRUE@@am__include@ @am__quote@$(DEPDIR)/testsuite.P@am__quote@
+
+# Automake 1.16 and newer use make rules to generate the dependency stubs.
+# Use this opportunity to generate accurate prerequisites from distributed
+# testsuite dependencies, needed so that make knows to rebuild the testsuite
+# when source files are modified in a distribution tarball, or after a make
+# distclean.
+#
+# With older Automake the stubs are generated directly in config.status.
+# Since this rule is ignored things should still work but the build may
+# miss modifications to the testsuite on the first build from a tarball.
+_dx_autotest_depfiles = am--depfiles
+$(_dx_autotest_depfiles): $(DEPDIR)/testsuite.P
+$(DEPDIR)/testsuite.P:
+	@$(MKDIR_P) $(@D)
+	@if test -f $(builddir)/testsuite.deps; then \
+	  exec 3<$(builddir)/testsuite.deps; \
+	elif test -f $(srcdir)/testsuite.deps; then \
+	  exec 3<$(srcdir)/testsuite.deps; \
+	else \
+	  echo '# dummy' >$@-t && exit; \
+	fi; exec 4>$@-t; while read f <&3; do \
+	  printf 'testsuite: %s\n%s:\n' "$$f" "$$f" >&4; \
+	done
+	@mv -f $@-t $@