Import bmake-20201101vendor/NetBSD/bmake/20201101

Lots of new unit-tests increase code coverage.

Lots of refactoring, cleanup and simlpification to reduce
code size.

Fixes for Bug 223564 and 245807

Updates to dirdeps.mk and meta2deps.py

1 files changed, 40 insertions, 0 deletions

diff --git a/unit-tests/suff-lookup.mk b/unit-tests/suff-lookup.mk
new file mode 100644
index 000000000000..f45dfbd92111
--- /dev/null
+++ b/unit-tests/suff-lookup.mk
@@ -0,0 +1,40 @@
+# $NetBSD: suff-lookup.mk,v 1.2 2020/10/24 03:18:22 rillig Exp $
+#
+# Demonstrate name resolution for suffixes.
+#
+# See also:
+#	FindSuffByName
+
+.MAKEFLAGS: -ds
+
+all: suff-lookup.cc
+
+.SUFFIXES: .c .cc .ccc
+
+# Register '.short' before '.sho'.  When searching for the transformation
+# '.sho.c', the suffix '.short' must not be found even though it starts with
+# the correct characters.
+.SUFFIXES: .short .sho .dead-end
+
+# From long to short suffix.
+.ccc.cc:
+	: 'Making ${.TARGET} from ${.IMPSRC}.'
+
+# From short to long suffix.
+.c.ccc:
+	: 'Making ${.TARGET} from ${.IMPSRC}.'
+
+.short.c:
+	: 'Making ${.TARGET} from ${.IMPSRC}.'
+.sho.c:
+	: 'Making ${.TARGET} from ${.IMPSRC}.'
+.dead-end.short:
+	: 'Making ${.TARGET} from ${.IMPSRC}.'
+
+suff-lookup.sho:
+	: 'Making ${.TARGET} out of nothing.'
+
+# Deleting all suffixes and adding them again rebuilds all of the above
+# transformation rules.
+.SUFFIXES:
+.SUFFIXES: .c .cc .ccc .short .sho .dead-end