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### Remove GNU make implicit rules
## This speeds things up since we don't need to look for and stat() a
## "foo.c,v" every time a rule referring to "foo.c" is in play. See
## "make -p -f/dev/null | grep ^%::'".
%:: %,v
%:: RCS/%,v
%:: RCS/%
%:: s.%
%:: SCCS/s.%
## Likewise delete default $(SUFFIXES). See:
##
## info make --index-search=.SUFFIXES
.SUFFIXES:
### Flags affecting all rules
# A GNU make extension since gmake 3.72 (released in late 1994) to
# remove the target of rules if commands in those rules fail. The
# default is to only do that if make itself receives a signal. Affects
# all targets, see:
#
# info make --index-search=.DELETE_ON_ERROR
.DELETE_ON_ERROR:
### Global variables
## comma, empty, space: handy variables as these tokens are either
## special or can be hard to spot among other Makefile syntax.
comma := ,
empty :=
space := $(empty) $(empty)
### Quieting
## common
QUIET_SUBDIR0 = +$(MAKE) -C # space to separate -C and subdir
QUIET_SUBDIR1 =
ifneq ($(findstring w,$(MAKEFLAGS)),w)
PRINT_DIR = --no-print-directory
else # "make -w"
NO_SUBDIR = :
endif
ifneq ($(findstring s,$(MAKEFLAGS)),s)
ifndef V
## common
QUIET_SUBDIR0 = +@subdir=
QUIET_SUBDIR1 = ;$(NO_SUBDIR) echo ' ' SUBDIR $$subdir; \
$(MAKE) $(PRINT_DIR) -C $$subdir
QUIET = @
QUIET_GEN = @echo ' ' GEN $@;
QUIET_MKDIR_P_PARENT = @echo ' ' MKDIR -p $(@D);
## Used in "Makefile"
QUIET_CC = @echo ' ' CC $@;
QUIET_AR = @echo ' ' AR $@;
QUIET_LINK = @echo ' ' LINK $@;
QUIET_BUILT_IN = @echo ' ' BUILTIN $@;
QUIET_LNCP = @echo ' ' LN/CP $@;
QUIET_XGETTEXT = @echo ' ' XGETTEXT $@;
QUIET_MSGINIT = @echo ' ' MSGINIT $@;
QUIET_MSGFMT = @echo ' ' MSGFMT $@;
QUIET_MSGMERGE = @echo ' ' MSGMERGE $@;
QUIET_GCOV = @echo ' ' GCOV $@;
QUIET_SP = @echo ' ' SP $<;
QUIET_HDR = @echo ' ' HDR $(<:hcc=h);
QUIET_RC = @echo ' ' RC $@;
QUIET_SPATCH = @echo ' ' SPATCH $<;
QUIET_SPATCH_T = @echo ' ' SPATCH TEST $(@:.build/%=%);
## Used in "Documentation/Makefile"
QUIET_ASCIIDOC = @echo ' ' ASCIIDOC $@;
QUIET_XMLTO = @echo ' ' XMLTO $@;
QUIET_DB2TEXI = @echo ' ' DB2TEXI $@;
QUIET_MAKEINFO = @echo ' ' MAKEINFO $@;
QUIET_DBLATEX = @echo ' ' DBLATEX $@;
QUIET_XSLTPROC = @echo ' ' XSLTPROC $@;
QUIET_GEN = @echo ' ' GEN $@;
QUIET_STDERR = 2> /dev/null
QUIET_LINT_GITLINK = @echo ' ' LINT GITLINK $<;
QUIET_LINT_MANSEC = @echo ' ' LINT MAN SEC $<;
QUIET_LINT_MANEND = @echo ' ' LINT MAN END $<;
export V
endif
endif
### Templates
## mkdir_p_parent: lazily "mkdir -p" the path needed for a $@
## file. Uses $(wildcard) to avoid the "mkdir -p" if it's not
## needed.
##
## Is racy, but in a good way; we might redundantly (and safely)
## "mkdir -p" when running in parallel, but won't need to exhaustively create
## individual rules for "a" -> "prefix" -> "dir" -> "file" if given a
## "a/prefix/dir/file". This can instead be inserted at the start of
## the "a/prefix/dir/file" rule.
define mkdir_p_parent_template
$(if $(wildcard $(@D)),,$(QUIET_MKDIR_P_PARENT)$(shell mkdir -p $(@D)))
endef