lib/build-src.mk

   1 ########################################################################
   2 # Copyright (C) 2021, 2022  Alejandro Colomar <alx.manpages@gmail.com>
   3 # SPDX-License-Identifier:  GPL-2.0  OR  LGPL-2.0
   4 ########################################################################
   5
   6
   7 ifndef MAKEFILE_BUILD_SRC_INCLUDED
   8 MAKEFILE_BUILD_SRC_INCLUDED := 1
   9
  10
  11 include $(srcdir)/lib/build.mk
  12 include $(srcdir)/lib/cmd.mk
  13 include $(srcdir)/lib/lint.mk
  14 include $(srcdir)/lib/src.mk
  15
  16
  17 PKG-CONFIG_LIBS := libbsd-overlay
  18
  19
  20 DEFAULT_CPPFLAGS := $(shell $(PKG-CONFIG) --cflags $(PKG-CONFIG_LIBS))
  21 EXTRA_CPPFLAGS   :=
  22 CPPFLAGS         := $(DEFAULT_CPPFLAGS) $(EXTRA_CPPFLAGS)
  23
  24 DEFAULT_CFLAGS := -std=gnu17
  25 DEFAULT_CFLAGS += -Wall
  26 DEFAULT_CFLAGS += -Wextra
  27 DEFAULT_CFLAGS += -Wstrict-prototypes
  28 DEFAULT_CFLAGS += -Werror
  29 DEFAULT_CFLAGS += -Wno-error=unused-parameter
  30 DEFAULT_CFLAGS += -Wno-error=sign-compare
  31 DEFAULT_CFLAGS += -Wno-error=format
  32 DEFAULT_CFLAGS += -Wno-error=uninitialized
  33 EXTRA_CFLAGS   :=
  34 CFLAGS         := $(DEFAULT_CFLAGS) $(EXTRA_CFLAGS)
  35
  36 DEFAULT_LDFLAGS := -Wl,--as-needed
  37 DEFAULT_LDFLAGS += -Wl,--no-allow-shlib-undefined
  38 DEFAULT_LDFLAGS += -Wl,--no-copy-dt-needed-entries
  39 DEFAULT_LDFLAGS += -Wl,--no-undefined
  40 DEFAULT_LDFLAGS += $(shell $(PKG-CONFIG) --libs-only-L $(PKG-CONFIG_LIBS))
  41 DEFAULT_LDFLAGS += $(shell $(PKG-CONFIG) --libs-only-other $(PKG-CONFIG_LIBS))
  42 EXTRA_LDFLAGS   :=
  43 LDFLAGS         := $(DEFAULT_LDFLAGS) $(EXTRA_LDFLAGS)
  44
  45 DEFAULT_LDLIBS := -lc
  46 DEFAULT_LDLIBS += $(shell $(PKG-CONFIG) --libs-only-l $(PKG-CONFIG_LIBS))
  47 EXTRA_LDLIBS   :=
  48 LDLIBS         := $(DEFAULT_LDLIBS) $(EXTRA_LDLIBS)
  49
  50
  51 CC  := cc
  52 LD  := $(CC) $(CFLAGS)
  53 MAN := man
  54
  55
  56 _SRCPAGEDIRS   := $(patsubst $(MANDIR)/%,$(_SRCDIR)/%.d,$(LINTMAN))
  57
  58 _UNITS_src_src := $(patsubst $(MANDIR)/%,$(_SRCDIR)/%,$(shell \
  59                 $(FIND) $(MANDIR)/man*/ -type f \
  60                 | $(GREP) '$(MANEXT)$$' \
  61                 | $(XARGS) $(GREP) -l '^\.TH ' \
  62                 | while read m; do \
  63                     <$$m \
  64                     $(SED) -n "s,^\... SRC BEGIN (\(.*.[ch]\))$$,$$m.d/\1,p"; \
  65                 done \
  66                 | $(SORT)))
  67 _UNITS_src_h   := $(filter %.h,$(_UNITS_src_src))
  68 _UNITS_src_c   := $(filter %.c,$(_UNITS_src_src))
  69 _UNITS_src_o   := $(patsubst %.c,%.o,$(_UNITS_src_c))
  70 _UNITS_src_bin := $(patsubst %.c,%,$(_UNITS_src_c))
  71
  72
  73 $(_SRCPAGEDIRS): $(_SRCDIR)/%.d: $(MANDIR)/% | $$(@D)/.
  74         $(info MKDIR    $@)
  75         $(MKDIR) $@
  76         touch $@
  77
  78 $(_UNITS_src_src): $$(patsubst $(_SRCDIR)/%.d,$(MANDIR)/%,$$(@D)) | $$(@D)
  79 $(_UNITS_src_c):   $$(filter $$(@D)/%.h,$(_UNITS_src_h))
  80 $(_UNITS_src_src):
  81         $(info SED      $@)
  82         <$< \
  83         $(SED) -n \
  84                 -e '/^\.TH/,/^\.SH/{/^\.SH/!p}' \
  85                 -e '/^\.SH EXAMPLES/p' \
  86                 -e "/^\... SRC BEGIN ($(@F))$$/,/^\... SRC END$$/p" \
  87         | $(MAN) -P cat -l - \
  88         | $(SED) '/^[^ ]/d' \
  89         | $(SED) 's/^       //' \
  90         >$@
  91
  92 $(_UNITS_src_o): $(_SRCDIR)/%.o: $(_SRCDIR)/%.c
  93         $(info CC       $@)
  94         $(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
  95
  96 $(_UNITS_src_bin): $(_SRCDIR)/%: $(_SRCDIR)/%.o
  97         $(info LD       $@)
  98         $(LD) $(LDFLAGS) -o $@ $< $(LDLIBS)
  99
 100
 101 .PHONY: build-src-c
 102 build-src-c:   $(_UNITS_src_c) | builddirs-src
 103         @:
 104
 105 .PHONY: build-src-cc
 106 build-src-cc:  $(_UNITS_src_o)
 107         @:
 108
 109 .PHONY: build-src-ld
 110 build-src-ld:  $(_UNITS_src_bin)
 111         @:
 112
 113 .PHONY: builddirs-src
 114 builddirs-src: $(_SRCDIRS)
 115         @:
 116
 117 .PHONY: build-src
 118 build-src: build-src-ld
 119
 120
 121 endif  # MAKEFILE_BUILD_SRC_INCLUDED