*.mk: Use empty recipes for .PHONY targets

The @: dummy recipe was there to avoid having rules without recipes.
Rules without recipes can be confusing, as the reader can't know if a
recipe is being defined somewhere else.  Also, implicit rules might
apply (in general, but we disable all implicit stuff).

However, @: is also problematic, since make really needs to run that
command, which is unnecessary overhead.  But okay, :(1) (really called
true(1), but wouldn't it be a nice man page name?) that's not meaningful
overhead.

And the bigger problem: having a recipe hides the usual:

	make: Nothing to be done for 'all'.

We already disable it by using .SILENCE:, but the message can be seen
when using V=1 (after this patch; prior to this patch, it was impossible
to find that message).  It is good to be able to know that make(1)
says there's nothing to be done, as a confirmation.

Signed-off-by: Alejandro Colomar <alx@kernel.org>

18 files changed, 49 insertions, 98 deletions

diff --git a/Makefile b/Makefile
index 8b6bc9370..411aa5ad2 100644
--- a/Makefile
+++ b/Makefile
@@ -38,8 +38,7 @@ MAKEFILEDIR := $(DATAROOTDIR)/mk
 
 
 .PHONY: all
-all: build
-	@:
+all: build;
 
 .PHONY: help
 help:
diff --git a/share/mk/build/_.mk b/share/mk/build/_.mk
index c68290c1e..a02301ff1 100644
--- a/share/mk/build/_.mk
+++ b/share/mk/build/_.mk
@@ -39,8 +39,7 @@ $(builddir)/%/:
 
 
 .PHONY: build
-build: build-catman build-html build-pdf build-ps build-src
-	@:
+build: build-catman build-html build-pdf build-ps build-src;
 
 .PHONY: clean
 clean:
diff --git a/share/mk/build/catman.mk b/share/mk/build/catman.mk
index 39d8bc90f..16b9f26b7 100644
--- a/share/mk/build/catman.mk
+++ b/share/mk/build/catman.mk
@@ -60,28 +60,22 @@ $(_CATMAN): %.cat: %.cat.set | $$(@D)/
 
 
 .PHONY: build-catman-eqn
-build-catman-eqn: $(_CATMAN_troff)
-	@:
+build-catman-eqn: $(_CATMAN_troff);
 
 .PHONY: build-catman-troff-man
-build-catman-troff-man: $(_CATMAN_MAN_set)
-	@:
+build-catman-troff-man: $(_CATMAN_MAN_set);
 
 .PHONY: build-catman-troff-mdoc
-build-catman-troff-mdoc: $(_CATMAN_MDOC_set)
-	@:
+build-catman-troff-mdoc: $(_CATMAN_MDOC_set);
 
 .PHONY: build-catman-troff
-build-catman-troff: build-catman-troff-man build-catman-troff-mdoc
-	@:
+build-catman-troff: build-catman-troff-man build-catman-troff-mdoc;
 
 .PHONY: build-catman-grotty
-build-catman-grotty: $(_CATMAN)
-	@:
+build-catman-grotty: $(_CATMAN);
 
 .PHONY: build-catman
-build-catman: build-catman-grotty
-	@:
+build-catman: build-catman-grotty;
 
 
 endif  # include guard
diff --git a/share/mk/build/html.mk b/share/mk/build/html.mk
index b68f97213..084654df7 100644
--- a/share/mk/build/html.mk
+++ b/share/mk/build/html.mk
@@ -36,8 +36,7 @@ $(_HTMLPAGES): $(_HTMLDIR)/%$(htmlext): $(MANDIR)/% | $$(@D)/
 
 
 .PHONY: build-html html
-build-html html: $(_HTMLPAGES)
-	@:
+build-html html: $(_HTMLPAGES);
 
 
 endif  # include guard
diff --git a/share/mk/build/pdf.mk b/share/mk/build/pdf.mk
index c2547bf0b..0f7a61042 100644
--- a/share/mk/build/pdf.mk
+++ b/share/mk/build/pdf.mk
@@ -47,28 +47,22 @@ $(_PDFMAN): %.pdf: %.pdf.set | $$(@D)/
 
 
 .PHONY: build-pdf-eqn
-build-pdf-eqn: $(_PDFMAN_troff)
-	@:
+build-pdf-eqn: $(_PDFMAN_troff);
 
 .PHONY: build-pdf-troff-man
-build-pdf-troff-man: $(_PDFMAN_MAN_set)
-	@:
+build-pdf-troff-man: $(_PDFMAN_MAN_set);
 
 .PHONY: build-pdf-troff-mdoc
-build-pdf-troff-mdoc: $(_PDFMAN_MDOC_set)
-	@:
+build-pdf-troff-mdoc: $(_PDFMAN_MDOC_set);
 
 .PHONY: build-pdf-troff
-build-pdf-troff: build-pdf-troff-man build-pdf-troff-mdoc
-	@:
+build-pdf-troff: build-pdf-troff-man build-pdf-troff-mdoc;
 
 .PHONY: build-pdf-gropdf
-build-pdf-gropdf: $(_PDFMAN)
-	@:
+build-pdf-gropdf: $(_PDFMAN);
 
 .PHONY: build-pdf
-build-pdf: build-pdf-gropdf
-	@:
+build-pdf: build-pdf-gropdf;
 
 
 endif  # include guard
diff --git a/share/mk/build/pre.mk b/share/mk/build/pre.mk
index cfa01f663..4c458fa4e 100644
--- a/share/mk/build/pre.mk
+++ b/share/mk/build/pre.mk
@@ -35,16 +35,13 @@ $(_MAN_eqn): %.eqn: %.tbl | $$(@D)/
 
 
 .PHONY: build-pre-preconv
-build-pre-preconv: $(_MAN_tbl)
-	@:
+build-pre-preconv: $(_MAN_tbl);
 
 .PHONY: build-pre-tbl
-build-pre-tbl: $(_MAN_eqn)
-	@:
+build-pre-tbl: $(_MAN_eqn);
 
 .PHONY: build-pre
-build-pre: build-pre-tbl
-	@:
+build-pre: build-pre-tbl;
 
 
 endif  # include guard
diff --git a/share/mk/build/ps.mk b/share/mk/build/ps.mk
index 0ce828c86..899d14756 100644
--- a/share/mk/build/ps.mk
+++ b/share/mk/build/ps.mk
@@ -47,28 +47,22 @@ $(_PSMAN): %.ps: %.ps.set | $$(@D)/
 
 
 .PHONY: build-ps-eqn
-build-ps-eqn: $(_PSMAN_troff)
-	@:
+build-ps-eqn: $(_PSMAN_troff);
 
 .PHONY: build-ps-troff-man
-build-ps-troff-man: $(_PSMAN_MAN_set)
-	@:
+build-ps-troff-man: $(_PSMAN_MAN_set);
 
 .PHONY: build-ps-troff-mdoc
-build-ps-troff-mdoc: $(_PSMAN_MDOC_set)
-	@:
+build-ps-troff-mdoc: $(_PSMAN_MDOC_set);
 
 .PHONY: build-ps-troff
-build-ps-troff: build-ps-troff-man build-ps-troff-mdoc
-	@:
+build-ps-troff: build-ps-troff-man build-ps-troff-mdoc;
 
 .PHONY: build-ps-grops
-build-ps-grops: $(_PSMAN)
-	@:
+build-ps-grops: $(_PSMAN);
 
 .PHONY: build-ps
-build-ps: build-ps-grops
-	@:
+build-ps: build-ps-grops;
 
 
 endif  # include guard
diff --git a/share/mk/build/src.mk b/share/mk/build/src.mk
index e273fbf4e..fcee7fa43 100644
--- a/share/mk/build/src.mk
+++ b/share/mk/build/src.mk
@@ -98,16 +98,13 @@ $(_UNITS_src_bin): %: %.o
 
 
 .PHONY: build-src-c
-build-src-c:   $(_UNITS_src_c)
-	@:
+build-src-c:   $(_UNITS_src_c);
 
 .PHONY: build-src-cc
-build-src-cc:  $(_UNITS_src_o)
-	@:
+build-src-cc:  $(_UNITS_src_o);
 
 .PHONY: build-src-ld
-build-src-ld:  $(_UNITS_src_bin)
-	@:
+build-src-ld:  $(_UNITS_src_bin);
 
 .PHONY: build-src
 build-src: build-src-ld
diff --git a/share/mk/check/_.mk b/share/mk/check/_.mk
index 1ee40294c..6326d1f89 100644
--- a/share/mk/check/_.mk
+++ b/share/mk/check/_.mk
@@ -12,8 +12,7 @@ check := check-catman
 
 
 .PHONY: check
-check: $(check)
-	@:
+check: $(check);
 
 
 endif  # include guard
diff --git a/share/mk/check/catman.mk b/share/mk/check/catman.mk
index d99919e2d..8268e85d3 100644
--- a/share/mk/check/catman.mk
+++ b/share/mk/check/catman.mk
@@ -38,16 +38,13 @@ $(_CHECK_catman): %.check-catman.touch: %.cat.grep | $$(@D)/
 
 
 .PHONY: check-catman-col
-check-catman-col: $(_CHECK_catman_grep)
-	@:
+check-catman-col: $(_CHECK_catman_grep);
 
 .PHONY: check-catman-grep
-check-catman-grep: $(_CHECK_catman)
-	@:
+check-catman-grep: $(_CHECK_catman);
 
 .PHONY: check-catman
-check-catman: check-catman-grep
-	@:
+check-catman: check-catman-grep;
 
 
 endif  # include guard
diff --git a/share/mk/dist.mk b/share/mk/dist.mk
index e10294f1e..da76e7bf3 100644
--- a/share/mk/dist.mk
+++ b/share/mk/dist.mk
@@ -81,16 +81,13 @@ $(DISTFILE).xz: %.xz: % | $$(@D)/
 
 
 .PHONY: dist-tar
-dist-tar: $(DISTFILE)
-	@:
+dist-tar: $(DISTFILE);
 
 .PHONY: $(dist)
-$(dist): dist-%: $(DISTFILE).%
-	@:
+$(dist): dist-%: $(DISTFILE).%;
 
 .PHONY: dist
-dist: $(dist)
-	@:
+dist: $(dist);
 
 
 endif  # include guard
diff --git a/share/mk/install/_.mk b/share/mk/install/_.mk
index 0a0861e47..98f6f888f 100644
--- a/share/mk/install/_.mk
+++ b/share/mk/install/_.mk
@@ -32,12 +32,10 @@ $(DESTDIR)%/:
 
 
 .PHONY: install
-install: install-man
-	@:
+install: install-man;
 
 .PHONY: uninstall
-uninstall: uninstall-man
-	@:
+uninstall: uninstall-man;
 
 
 endif  # include guard
diff --git a/share/mk/install/html.mk b/share/mk/install/html.mk
index 4b6dfa262..ae518d2c2 100644
--- a/share/mk/install/html.mk
+++ b/share/mk/install/html.mk
@@ -30,12 +30,10 @@ $(_htmlpages): $(_htmldir)/%: $(_HTMLDIR)/% | $$(@D)/
 
 
 .PHONY: install-html
-install-html: $(_htmlpages)
-	@:
+install-html: $(_htmlpages);
 
 .PHONY: uninstall-html
-uninstall-html: $(_htmldir_rmdir) $(_htmldirs_rmdir) $(_htmlpages_rm)
-	@:
+uninstall-html: $(_htmldir_rmdir) $(_htmldirs_rmdir) $(_htmlpages_rm);
 
 
 endif  # include guard
diff --git a/share/mk/install/man.mk b/share/mk/install/man.mk
index 128f20833..f1043a9d6 100644
--- a/share/mk/install/man.mk
+++ b/share/mk/install/man.mk
@@ -192,20 +192,16 @@ $(_mandir_rmdir): $(uninstall_manX) FORCE
 
 
 .PHONY: $(install_manX)
-$(install_manX): install-man%: $$(_man%pages)
-	@:
+$(install_manX): install-man%: $$(_man%pages);
 
 .PHONY: install-man
-install-man: $(install_manX)
-	@:
+install-man: $(install_manX);
 
 .PHONY: $(uninstall_manX)
-$(uninstall_manX): uninstall-man%: $$(_man%pages_rm) $$(_man%dir_rmdir)
-	@:
+$(uninstall_manX): uninstall-man%: $$(_man%pages_rm) $$(_man%dir_rmdir);
 
 .PHONY: uninstall-man
-uninstall-man: $(_mandir_rmdir) $(uninstall_manX)
-	@:
+uninstall-man: $(_mandir_rmdir) $(uninstall_manX);
 
 
 endif  # include guard
diff --git a/share/mk/lint/_.mk b/share/mk/lint/_.mk
index 3b679bc7e..9d93bd380 100644
--- a/share/mk/lint/_.mk
+++ b/share/mk/lint/_.mk
@@ -12,8 +12,7 @@ lint := lint-c lint-man lint-mdoc
 
 
 .PHONY: lint
-lint: $(lint)
-	@:
+lint: $(lint);
 
 
 endif  # include guard
diff --git a/share/mk/lint/c.mk b/share/mk/lint/c.mk
index 70422aa8a..94cee5f9b 100644
--- a/share/mk/lint/c.mk
+++ b/share/mk/lint/c.mk
@@ -90,12 +90,10 @@ $(_LINT_c_iwyu): %.lint-c.iwyu.touch: %.c
 
 
 .PHONY: $(lint_c)
-$(lint_c): lint-c-%: $$(_LINT_c_%)
-	@:
+$(lint_c): lint-c-%: $$(_LINT_c_%);
 
 .PHONY: lint-c
-lint-c: $(lint_c)
-	@:
+lint-c: $(lint_c);
 
 
 endif  # include guard
diff --git a/share/mk/lint/man/man.mk b/share/mk/lint/man/man.mk
index 1c74d7e53..4b3d1db8b 100644
--- a/share/mk/lint/man/man.mk
+++ b/share/mk/lint/man/man.mk
@@ -61,12 +61,10 @@ $(_LINT_man_tbl): $(_MANDIR)/%.lint-man.tbl.touch: $(MANDIR)/% | $$(@D)/
 
 
 .PHONY: $(lint_man)
-$(lint_man): lint-man-%: $$(_LINT_man_%)
-	@:
+$(lint_man): lint-man-%: $$(_LINT_man_%);
 
 .PHONY: lint-man
-lint-man: $(lint_man)
-	@:
+lint-man: $(lint_man);
 
 
 endif  # include guard
diff --git a/share/mk/lint/man/mdoc.mk b/share/mk/lint/man/mdoc.mk
index 5c7344114..eaf186ee3 100644
--- a/share/mk/lint/man/mdoc.mk
+++ b/share/mk/lint/man/mdoc.mk
@@ -34,12 +34,10 @@ $(_LINT_mdoc_mandoc): $(_MANDIR)/%.lint-mdoc.mandoc.touch: $(MANDIR)/% | $$(@D)/
 
 
 .PHONY: $(lint_mdoc)
-$(lint_mdoc): lint-mdoc-%: $$(_LINT_mdoc_%)
-	@:
+$(lint_mdoc): lint-mdoc-%: $$(_LINT_mdoc_%);
 
 .PHONY: lint-mdoc
-lint-mdoc: $(lint_mdoc)
-	@:
+lint-mdoc: $(lint_mdoc);
 
 
 endif  # include guard