share/mk/build/examples/src.mk

   1 # Copyright 2021-2024, Alejandro Colomar <alx@kernel.org>
   2 # SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
   3
   4
   5 ifndef MAKEFILE_BUILD_EX_SRC_INCLUDED
   6 MAKEFILE_BUILD_EX_SRC_INCLUDED := 1
   7
   8
   9 include $(MAKEFILEDIR)/build/_.mk
  10 include $(MAKEFILEDIR)/configure/build-depends/findutils.mk
  11 include $(MAKEFILEDIR)/configure/build-depends/grep.mk
  12 include $(MAKEFILEDIR)/configure/build-depends/mandoc.mk
  13 include $(MAKEFILEDIR)/configure/build-depends/sed.mk
  14 include $(MAKEFILEDIR)/configure/directory_variables.mk
  15 include $(MAKEFILEDIR)/src.mk
  16
  17
  18 _UNITS_ex_src := \
  19         $(patsubst $(MANDIR)/%, $(_MANDIR)/%, \
  20                 $(shell \
  21                         $(FIND) $(MANDIR)/* -type f \
  22                         | $(GREP) '$(MANEXT)' \
  23                         | $(XARGS) $(GREP) -H '^\.\\" SRC BEGIN ' \
  24                         | $(SED) 's,:\.\\" SRC BEGIN (,.d/,' \
  25                         | $(SED) 's/)//' \
  26                         | $(SORTMAN) \
  27                         | $(SED) 's,:,\\:,g' \
  28                 ) \
  29         )
  30 _UNITS_ex_h := $(filter %.h,$(_UNITS_ex_src))
  31 _UNITS_ex_c := $(filter %.c,$(_UNITS_ex_src))
  32
  33
  34 $(_UNITS_ex_src): $$(patsubst $(_MANDIR)/%.d,$(MANDIR)/%,$$(@D)) $(MK) | $$(@D)/
  35 $(_UNITS_ex_c):   $$(filter $$(@D)/%.h,$(_UNITS_ex_h))
  36 $(_UNITS_ex_src):
  37         $(info SED      $@)
  38         <$< \
  39         $(SED) -n \
  40                 -e '/^\.TH/,/^\.SH/{/^\.SH/!p}' \
  41                 -e '/^\.SH EXAMPLES/p' \
  42                 -e "/^\... SRC BEGIN ($(@F))$$/,/^\... SRC END$$/p" \
  43         | $(MANDOC) -Tutf8 \
  44         | $(SED) '/^[^ ]/d' \
  45         | $(SED) 's/^       //' \
  46         >$@
  47
  48
  49 .PHONY: build-ex-src
  50 build-ex-src: $(_UNITS_ex_src);
  51
  52
  53 endif  # include guard