Makefile

   1 ########################################################################
   2 # Copyright (C) 2021        Alejandro Colomar <alx.manpages@gmail.com>
   3 # SPDX-License-Identifier:  GPL-2.0  OR  LGPL-2.0
   4 ########################################################################
   5 # Conventions:
   6 #
   7 # - Follow "Makefile Conventions" from the "GNU Coding Standards" closely.
   8 #   However, when something could be improved, don't follow those.
   9 # - Uppercase variables, when referring files, refer to files in this repo.
  10 # - Lowercase variables, when referring files, refer to system files.
  11 # - Lowercase variables starting with '_' refer to absolute paths,
  12 #   including $(DESTDIR).
  13 # - Uppercase variables starting with '_' refer to temporary files produced
  14 #   in $builddir.
  15 # - Variables ending with '_' refer to a subdir of their parent dir, which
  16 #   is in a variable of the same name but without the '_'.  The subdir is
  17 #   named after this project: <*/man>.
  18 # - Variables ending in '_rm' refer to files that can be removed (exist).
  19 # - Variables ending in '_rmdir' refer to dirs that can be removed (exist).
  20 # - Targets of the form '%-rm' remove their corresponding file '%'.
  21 # - Targets of the form '%/.-rmdir' remove their corresponding dir '%/'.
  22 # - Targets of the form '%/.' create their corresponding directory '%/'.
  23 # - Every file or directory to be created depends on its parent directory.
  24 #   This avoids race conditions caused by `mkdir -p`.  Only the root
  25 #   directories are created with parents.
  26 # - The 'FORCE' target is used to make phony some variables that can't be
  27 #   .PHONY to avoid some optimizations.
  28 #
  29 ########################################################################
  30
  31 SHELL := /bin/bash -Eeuo pipefail
  32
  33
  34 MAKEFLAGS += --no-print-directory
  35 MAKEFLAGS += --warn-undefined-variables
  36
  37
  38 srcdir   := .
  39 builddir := tmp
  40 DESTDIR  :=
  41 prefix   := /usr/local
  42
  43 SYSCONFDIR  := $(srcdir)/etc
  44 TMACDIR     := $(SYSCONFDIR)/groff/tmac
  45 MANDIR      := $(srcdir)
  46 MAN0DIR     := $(MANDIR)/man0
  47 MAN1DIR     := $(MANDIR)/man1
  48 MAN2DIR     := $(MANDIR)/man2
  49 MAN3DIR     := $(MANDIR)/man3
  50 MAN4DIR     := $(MANDIR)/man4
  51 MAN5DIR     := $(MANDIR)/man5
  52 MAN6DIR     := $(MANDIR)/man6
  53 MAN7DIR     := $(MANDIR)/man7
  54 MAN8DIR     := $(MANDIR)/man8
  55
  56 datarootdir := $(prefix)/share
  57 docdir      := $(datarootdir)/doc
  58 mandir      := $(datarootdir)/man
  59 man0dir     := $(mandir)/man0
  60 man1dir     := $(mandir)/man1
  61 man2dir     := $(mandir)/man2
  62 man3dir     := $(mandir)/man3
  63 man4dir     := $(mandir)/man4
  64 man5dir     := $(mandir)/man5
  65 man6dir     := $(mandir)/man6
  66 man7dir     := $(mandir)/man7
  67 man8dir     := $(mandir)/man8
  68 manext      := \.[0-9]\w*
  69 man0ext     := .0
  70 man1ext     := .1
  71 man2ext     := .2
  72 man2type_ext:= .2type
  73 man3ext     := .3
  74 man3type_ext:= .3type
  75 man4ext     := .4
  76 man5ext     := .5
  77 man6ext     := .6
  78 man7ext     := .7
  79 man8ext     := .8
  80 htmldir     := $(docdir)
  81 htmlext     := .html
  82
  83 htmldir_    := $(htmldir)/man
  84
  85 _LINTDIR    := $(builddir)/lint
  86 _HTMLDIR    := $(builddir)/html
  87 _SRCDIR     := $(builddir)/src
  88
  89 _mandir     := $(DESTDIR)$(mandir)
  90 _htmldir    := $(DESTDIR)$(htmldir_)
  91
  92
  93 DEFAULT_CHECKPATCHFLAGS :=
  94 EXTRA_CHECKPATCHFLAGS   :=
  95 CHECKPATCHFLAGS         := $(DEFAULT_CHECKPATCHFLAGS) $(EXTRA_CHECKPATCHFLAGS)
  96
  97 clang-tidy_config       := $(SYSCONFDIR)/clang-tidy/config.yaml
  98 DEFAULT_CLANG-TIDYFLAGS := --config-file=$(clang-tidy_config)
  99 DEFAULT_CLANG-TIDYFLAGS += --quiet
 100 DEFAULT_CLANG-TIDYFLAGS += --use-color
 101 EXTRA_CLANG-TIDYFLAGS   :=
 102 CLANG-TIDYFLAGS         := $(DEFAULT_CLANG-TIDYFLAGS) $(EXTRA_CLANG-TIDYFLAGS)
 103
 104 DEFAULT_CPPLINTFLAGS :=
 105 EXTRA_CPPLINTFLAGS   :=
 106 CPPLINTFLAGS         := $(DEFAULT_CPPLINTFLAGS) $(EXTRA_CPPLINTFLAGS)
 107
 108 DEFAULT_IWYUFLAGS := -Xiwyu --no_fwd_decls
 109 DEFAULT_IWYUFLAGS += -Xiwyu --error
 110 EXTRA_IWYUFLAGS   :=
 111 IWYUFLAGS         := $(DEFAULT_IWYUFLAGS) $(EXTRA_IWYUFLAGS)
 112
 113 DEFAULT_CPPFLAGS :=
 114 EXTRA_CPPFLAGS   :=
 115 CPPFLAGS         := $(DEFAULT_CPPFLAGS) $(EXTRA_CPPFLAGS)
 116
 117 DEFAULT_CFLAGS := -std=gnu17
 118 DEFAULT_CFLAGS += -Wall
 119 DEFAULT_CFLAGS += -Wextra
 120 DEAFULT_CFLAGS += -Wstrict-prototypes
 121 DEFAULT_CFLAGS += -Werror
 122 DEFAULT_CFLAGS += -Wno-error=unused-parameter
 123 DEFAULT_CFLAGS += -Wno-error=sign-compare
 124 DEFAULT_CFLAGS += -Wno-error=format
 125 DEFAULT_CFLAGS += -Wno-error=uninitialized
 126 EXTRA_CFLAGS   :=
 127 CFLAGS         := $(DEFAULT_CFLAGS) $(EXTRA_CFLAGS)
 128
 129 DEFAULT_LDFLAGS := -Wl,--as-needed
 130 DEFAULT_LDFLAGS += -Wl,--no-allow-shlib-undefined
 131 DEFAULT_LDFLAGS += -Wl,--no-copy-dt-needed-entries
 132 DEFAULT_LDFLAGS += -Wl,--no-undefined
 133 EXTRA_LDFLAGS   :=
 134 LDFLAGS         := $(DEFAULT_LDFLAGS) $(EXTRA_LDFLAGS)
 135
 136 DEFAULT_LDLIBS := -lc
 137 EXTRA_LDLIBS   :=
 138 LDLIBS         := $(DEFAULT_LDLIBS) $(EXTRA_LDLIBS)
 139
 140 TMACFILES            := $(sort $(shell find $(TMACDIR) -not -type d))
 141 TMACNAMES            := $(basename $(notdir $(TMACFILES)))
 142 GROFF_CHECKSTYLE_LVL := 3
 143 DEFAULT_GROFFFLAGS   := -man
 144 DEFAULT_GROFFFLAGS   += -t
 145 DEFAULT_GROFFFLAGS   += -M $(TMACDIR)
 146 DEFAULT_GROFFFLAGS   += $(foreach x,$(TMACNAMES),-m $(x))
 147 DEFAULT_GROFFFLAGS   += -rCHECKSTYLE=$(GROFF_CHECKSTYLE_LVL)
 148 DEFAULT_GROFFFLAGS   += -ww
 149 EXTRA_GROFFFLAGS     :=
 150 GROFFFLAGS           := $(DEFAULT_GROFFFLAGS) $(EXTRA_GROFFFLAGS)
 151
 152 DEFAULT_MANDOCFLAGS := -man
 153 DEFAULT_MANDOCFLAGS += -Tlint
 154 EXTRA_MANDOCFLAGS   :=
 155 MANDOCFLAGS         := $(DEFAULT_MANDOCFLAGS) $(EXTRA_MANDOCFLAGS)
 156
 157 DEFAULT_MAN2HTMLFLAGS :=
 158 EXTRA_MAN2HTMLFLAGS   :=
 159 MAN2HTMLFLAGS         := $(DEFAULT_MAN2HTMLFLAGS) $(EXTRA_MAN2HTMLFLAGS)
 160
 161
 162 INSTALL      := install
 163 INSTALL_DATA := $(INSTALL) -m 644
 164 INSTALL_DIR  := $(INSTALL) -m 755 -d
 165 MKDIR        := mkdir -p
 166 RM           := rm
 167 RMDIR        := rmdir --ignore-fail-on-non-empty
 168 CHECKPATCH   := checkpatch
 169 CLANG-TIDY   := clang-tidy
 170 CPPLINT      := cpplint
 171 IWYU         := iwyu
 172 CC           := cc
 173 LD           := $(CC) $(CFLAGS)
 174 GROFF        := groff
 175 MAN          := man
 176 MANDOC       := mandoc
 177 MAN2HTML     := man2html
 178
 179
 180 MAN_SECTIONS := 0 1 2 3 4 5 6 7 8
 181
 182
 183 .PHONY: all
 184 all:
 185         $(MAKE) uninstall
 186         $(MAKE) install
 187
 188 %/.:
 189         $(info INSTALL  $(@D)/)
 190         $(INSTALL_DIR) $(@D)
 191
 192 %-rm:
 193         $(info RM       $*)
 194         $(RM) $*
 195
 196 %-rmdir:
 197         $(info RMDIR    $(@D))
 198         $(RMDIR) $(@D)
 199
 200
 201 .PHONY: install
 202 install: install-man | installdirs
 203         @:
 204
 205 .PHONY: installdirs
 206 installdirs: | installdirs-man
 207         @:
 208
 209 .PHONY: uninstall remove
 210 uninstall remove: uninstall-man
 211         @:
 212
 213 .PHONY: clean
 214 clean:
 215         $(RM) -rf $(builddir)
 216
 217
 218 ########################################################################
 219 # man
 220
 221 MANPAGES   := $(sort $(shell find $(MANDIR)/man?/ -type f | grep '$(manext)'))
 222 LINTMAN    := $(sort $(shell find $(MANDIR)/man?/ -type f | grep '$(manext)' \
 223                              | xargs grep -l '^\.TH '))
 224 _HTMLPAGES  := $(patsubst $(MANDIR)/%,$(_HTMLDIR)/%.html,$(MANPAGES))
 225 _htmlpages  := $(patsubst $(_HTMLDIR)/%,$(_htmldir)/%,$(_HTMLPAGES))
 226 _manpages   := $(patsubst $(MANDIR)/%,$(_mandir)/%,$(MANPAGES))
 227 _man0pages  := $(filter %$(man0ext),$(_manpages))
 228 _man1pages  := $(filter %$(man1ext),$(_manpages))
 229 _man2pages  := $(filter %$(man2ext),$(_manpages))
 230 _man2pages  += $(filter %$(man2type_ext),$(_manpages))
 231 _man3pages  := $(filter %$(man3ext),$(_manpages))
 232 _man3pages  += $(filter %$(man3type_ext),$(_manpages))
 233 _man4pages  := $(filter %$(man4ext),$(_manpages))
 234 _man5pages  := $(filter %$(man5ext),$(_manpages))
 235 _man6pages  := $(filter %$(man6ext),$(_manpages))
 236 _man7pages  := $(filter %$(man7ext),$(_manpages))
 237 _man8pages  := $(filter %$(man8ext),$(_manpages))
 238 _LINT_groff :=$(patsubst $(MANDIR)/%,$(_LINTDIR)/%.lint.groff.touch,$(LINTMAN))
 239 _LINT_mandoc:=$(patsubst $(MANDIR)/%,$(_LINTDIR)/%.lint.mandoc.touch,$(LINTMAN))
 240 _SRCPAGEDIRS:=$(patsubst $(MANDIR)/%,$(_SRCDIR)/%.d,$(LINTMAN))
 241 _UNITS_src  :=$(sort $(patsubst $(MANDIR)/%,$(_SRCDIR)/%,$(shell \
 242                 find $(MANDIR)/man?/ -type f \
 243                 | grep '$(manext)$$' \
 244                 | xargs grep -l '^\.TH ' \
 245                 | while read m; do \
 246                         <$$m \
 247                         sed -n "s,^\... SRC BEGIN (\(.*.[ch]\))$$,$$m.d/\1,p"; \
 248                 done)))
 249 _UNITS_h    := $(filter %.h,$(_UNITS_src))
 250 _UNITS_c    := $(filter %.c,$(_UNITS_src))
 251 _UNITS_o    := $(patsubst %.c,%.o,$(_UNITS_c))
 252 _UNITS_bin  := $(patsubst %.c,%,$(_UNITS_c))
 253 _LINT_checkpatch := $(patsubst %.c,%.lint.checkpatch.touch,$(_UNITS_c))
 254 _LINT_clang-tidy := $(patsubst %.c,%.lint.clang-tidy.touch,$(_UNITS_c))
 255 _LINT_cpplint    := $(patsubst %.c,%.lint.cpplint.touch,$(_UNITS_c))
 256 _LINT_iwyu       := $(patsubst %.c,%.lint.iwyu.touch,$(_UNITS_c))
 257
 258 MANDIRS   := $(sort $(shell find $(MANDIR)/man? -type d))
 259 _HTMLDIRS  := $(patsubst $(MANDIR)/%,$(_HTMLDIR)/%/.,$(MANDIRS))
 260 _LINTDIRS  := $(patsubst $(MANDIR)/%,$(_LINTDIR)/%/.,$(MANDIRS))
 261 _SRCDIRS   := $(patsubst $(MANDIR)/%,$(_SRCDIR)/%/.,$(MANDIRS))
 262 _htmldirs := $(patsubst $(_HTMLDIR)/%,$(_htmldir)/%,$(_HTMLDIRS))
 263 _mandirs  := $(patsubst $(MANDIR)/%,$(_mandir)/%/.,$(MANDIRS))
 264 _man0dir  := $(filter %man0/.,$(_mandirs))
 265 _man1dir  := $(filter %man1/.,$(_mandirs))
 266 _man2dir  := $(filter %man2/.,$(_mandirs))
 267 _man3dir  := $(filter %man3/.,$(_mandirs))
 268 _man4dir  := $(filter %man4/.,$(_mandirs))
 269 _man5dir  := $(filter %man5/.,$(_mandirs))
 270 _man6dir  := $(filter %man6/.,$(_mandirs))
 271 _man7dir  := $(filter %man7/.,$(_mandirs))
 272 _man8dir  := $(filter %man8/.,$(_mandirs))
 273
 274 _htmlpages_rm := $(addsuffix -rm,$(wildcard $(_htmlpages)))
 275 _man0pages_rm := $(addsuffix -rm,$(wildcard $(_man0pages)))
 276 _man1pages_rm := $(addsuffix -rm,$(wildcard $(_man1pages)))
 277 _man2pages_rm := $(addsuffix -rm,$(wildcard $(_man2pages)))
 278 _man3pages_rm := $(addsuffix -rm,$(wildcard $(_man3pages)))
 279 _man4pages_rm := $(addsuffix -rm,$(wildcard $(_man4pages)))
 280 _man5pages_rm := $(addsuffix -rm,$(wildcard $(_man5pages)))
 281 _man6pages_rm := $(addsuffix -rm,$(wildcard $(_man6pages)))
 282 _man7pages_rm := $(addsuffix -rm,$(wildcard $(_man7pages)))
 283 _man8pages_rm := $(addsuffix -rm,$(wildcard $(_man8pages)))
 284
 285 _htmldirs_rmdir := $(addsuffix -rmdir,$(wildcard $(_htmldirs)))
 286 _mandirs_rmdir  := $(addsuffix -rmdir,$(wildcard $(_mandirs)))
 287 _man0dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man0dir)))
 288 _man1dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man1dir)))
 289 _man2dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man2dir)))
 290 _man3dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man3dir)))
 291 _man4dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man4dir)))
 292 _man5dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man5dir)))
 293 _man6dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man6dir)))
 294 _man7dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man7dir)))
 295 _man8dir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_man8dir)))
 296 _mandir_rmdir   := $(addsuffix -rmdir,$(wildcard $(_mandir)/.))
 297 _htmldir_rmdir  := $(addsuffix -rmdir,$(wildcard $(_htmldir)/.))
 298
 299 install_manX     := $(foreach x,$(MAN_SECTIONS),install-man$(x))
 300 installdirs_manX := $(foreach x,$(MAN_SECTIONS),installdirs-man$(x))
 301 uninstall_manX   := $(foreach x,$(MAN_SECTIONS),uninstall-man$(x))
 302
 303
 304 .SECONDEXPANSION:
 305 $(_manpages): $(_mandir)/man%: $(MANDIR)/man% | $$(@D)/.
 306         $(info INSTALL  $@)
 307         $(INSTALL_DATA) -T $< $@
 308
 309 $(_mandirs): %/.: | $$(dir %). $(_mandir)/.
 310
 311 $(_mandirs_rmdir): $(_mandir)/man%/.-rmdir: $$(_man%pages_rm) FORCE
 312 $(_mandir_rmdir): $(uninstall_manX) FORCE
 313
 314
 315 .PHONY: $(install_manX)
 316 $(install_manX): install-man%: $$(_man%pages) | installdirs-man%
 317         @:
 318
 319 .PHONY: install-man
 320 install-man: $(install_manX)
 321         @:
 322
 323 .PHONY: $(installdirs_manX)
 324 $(installdirs_manX): installdirs-man%: $$(_man%dir)
 325         @:
 326
 327 .PHONY: installdirs-man
 328 installdirs-man: $(installdirs_manX)
 329         @:
 330
 331 .PHONY: $(uninstall_manX)
 332 $(uninstall_manX): uninstall-man%: $$(_man%pages_rm) $$(_man%dir_rmdir)
 333         @:
 334
 335 .PHONY: uninstall-man
 336 uninstall-man: $(_mandir_rmdir) $(uninstall_manX)
 337         @:
 338
 339
 340 ########################################################################
 341 # dist
 342
 343 DISTNAME    := $(shell git describe 2>/dev/null)
 344 DISTFILE    := $(builddir)/$(DISTNAME).tar
 345 compression := gz xz
 346 dist        := $(foreach x,$(compression),dist-$(x))
 347
 348
 349 $(DISTFILE): $(shell git ls-files 2>/dev/null) | $$(@D)/.
 350         $(info TAR      $@)
 351         tar cf $@ -T /dev/null
 352         git ls-files \
 353         | xargs tar rf $@
 354
 355 $(DISTFILE).gz: %.gz: % | $$(@D)/.
 356         $(info GZIP     $@)
 357         gzip -knf $<
 358
 359 $(DISTFILE).xz: %.xz: % | $$(@D)/.
 360         $(info XZ       $@)
 361         xz -kf $<
 362
 363
 364 .PHONY: dist-tar
 365 dist-tar: $(DISTFILE) | builddirs-dist
 366         @:
 367
 368 .PHONY: $(dist)
 369 $(dist): dist-%: $(DISTFILE).% | builddirs-dist
 370         @:
 371
 372 .PHONY: builddirs-dist
 373 builddirs-dist: $(builddir)/.
 374         @:
 375
 376 .PHONY: dist
 377 dist: $(dist)
 378         @:
 379
 380
 381 ########################################################################
 382 # src
 383
 384 $(_SRCPAGEDIRS): $(_SRCDIR)/%.d: $(MANDIR)/% | $$(@D)/.
 385         $(info MKDIR    $@)
 386         $(MKDIR) $@
 387         touch $@
 388
 389 $(_UNITS_src): $$(patsubst $(_SRCDIR)/%.d,$(MANDIR)/%,$$(@D)) | $$(@D)
 390 $(_UNITS_c):   $$(filter $$(@D)/%.h,$(_UNITS_h))
 391 $(_UNITS_src):
 392         $(info SED      $@)
 393         <$< \
 394         sed -n \
 395                 -e '/^\.TH/,/^\.SH/{/^\.SH/!p}' \
 396                 -e '/^\.SH EXAMPLES/p' \
 397                 -e "/^\... SRC BEGIN ($(@F))$$/,/^\... SRC END$$/p" \
 398         | $(MAN) -P cat -l - \
 399         | sed '/^[^ ]/d' \
 400         | sed 's/^       //' \
 401         >$@
 402
 403 $(_UNITS_o): $(_SRCDIR)/%.o: $(_SRCDIR)/%.c
 404         $(info CC       $@)
 405         $(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
 406
 407 $(_UNITS_bin): $(_SRCDIR)/%: $(_SRCDIR)/%.o
 408         $(info LD       $@)
 409         $(LD) $(LDFLAGS) -o $@ $< $(LDLIBS)
 410
 411 $(_SRCDIRS): %/.: | $$(dir %). $(_SRCDIR)/.
 412
 413
 414 .PHONY: build-src src
 415 build-src src: $(_UNITS_c) | builddirs-src
 416         @:
 417
 418 .PHONY: build-cc
 419 build-cc: $(_UNITS_o)
 420         @:
 421
 422 .PHONY: build-ld
 423 build-ld: $(_UNITS_bin)
 424         @:
 425
 426 .PHONY: builddirs-src
 427 builddirs-src: $(_SRCDIRS)
 428         @:
 429
 430
 431 ########################################################################
 432 # lint
 433
 434 linters := checkpatch clang-tidy cpplint iwyu groff mandoc
 435 lint    := $(foreach x,$(linters),lint-$(x))
 436
 437 $(_LINT_checkpatch): %.lint.checkpatch.touch: %.c
 438         $(info LINT (checkpatch)        $@)
 439         $(CHECKPATCH) $(CHECKPATCHFLAGS) -f $<
 440         touch $@
 441
 442 $(_LINT_clang-tidy): %.lint.clang-tidy.touch: %.c
 443         $(info LINT (clang-tidy)        $@)
 444         $(CLANG-TIDY) $(CLANG-TIDYFLAGS) $< -- $(CPPFLAGS) $(CFLAGS) 2>&1 \
 445         | sed '/generated\.$$/d'
 446         touch $@
 447
 448 $(_LINT_cpplint): %.lint.cpplint.touch: %.c
 449         $(info LINT (cpplint)   $@)
 450         $(CPPLINT) $(CPPLINTFLAGS) $< >/dev/null
 451         touch $@
 452
 453 $(_LINT_iwyu): %.lint.iwyu.touch: %.c
 454         $(info LINT (iwyu)      $@)
 455         $(IWYU) $(IWYUFLAGS) $(CPPFLAGS) $(CFLAGS) $< 2>&1 \
 456         | tac \
 457         | sed '/correct/{N;d}' \
 458         | tac
 459         touch $@
 460
 461 $(_LINT_groff): $(_LINTDIR)/%.lint.groff.touch: $(MANDIR)/% | $$(@D)/.
 462         $(info LINT (groff)     $@)
 463         $(GROFF) $(GROFFFLAGS) -z $<
 464         touch $@
 465
 466 $(_LINT_mandoc): $(_LINTDIR)/%.lint.mandoc.touch: $(MANDIR)/% | $$(@D)/.
 467         $(info LINT (mandoc)    $@)
 468         $(MANDOC) $(MANDOCFLAGS) $<
 469         touch $@
 470
 471 $(_LINTDIRS): %/.: | $$(dir %). $(_LINTDIR)/.
 472
 473
 474 .PHONY: $(lint)
 475 $(lint): lint-%: $$(_LINT_%) | lintdirs
 476         @:
 477
 478 .PHONY: lintdirs
 479 lintdirs: $(_LINTDIRS) $(_SRCDIRS)
 480         @:
 481
 482 .PHONY: lint
 483 lint: $(lint)
 484         @:
 485
 486
 487 ########################################################################
 488 # html
 489
 490 # Use with
 491 #  make MAN2HTMLFLAGS=whatever html
 492 # The sed removes the lines "Content-type: text/html\n\n"
 493 $(_HTMLPAGES): $(_HTMLDIR)/%.html: $(MANDIR)/% | $$(@D)/.
 494         $(info MAN2HTML $@)
 495         $(MAN2HTML) $(MAN2HTMLFLAGS) $< | sed -e 1,2d >$@
 496
 497 $(_HTMLDIRS): %/.: | $$(dir %). $(_HTMLDIR)/.
 498
 499 $(_htmlpages): $(_htmldir)/%: $(_HTMLDIR)/% | $$(@D)/.
 500         $(info INSTALL  $@)
 501         $(INSTALL_DATA) -T $< $@
 502
 503 $(_htmldirs): %/.: | $$(dir %). $(_htmldir)/.
 504
 505
 506 .PHONY: build-html html
 507 build-html html: $(_HTMLPAGES) | builddirs-html
 508         @:
 509
 510 .PHONY: builddirs-html
 511 builddirs-html: $(_HTMLDIRS)
 512         @:
 513
 514 .PHONY: install-html
 515 install-html: $(_htmlpages) | installdirs-html
 516         @:
 517
 518 .PHONY: installdirs-html
 519 installdirs-html: $(_htmldirs)
 520         @:
 521
 522 .PHONY: uninstall-html
 523 uninstall-html: $(_htmldir_rmdir) $(_htmldirs_rmdir) $(_htmlpages_rm)
 524         @:
 525
 526
 527 ########################################################################
 528
 529 $(V).SILENT:
 530 FORCE: