GNU Make 4.3 Implicit Variables And Rules `make -p 2>/dev/null | sed '/^# environment$/,/^[^#]/d'` (`2>/dev/null` to suppress error message) (sed is to remove sensitive enviromental variables)

gnu_make_4.3_Implicit_Rules_And_Variables.make

# GNU Make 4.3
# Built for x86_64-pc-linux-gnu
# Copyright (C) 1988-2020 Free Software Foundation, Inc.
# License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
# This is free software: you are free to change and redistribute it.
# There is NO WARRANTY, to the extent permitted by law.

# Make data base, printed on Sun Oct 27 22:42:28 2024

# Variables

# default
PREPROCESS.S = $(CC) -E $(CPPFLAGS)
# default
COMPILE.m = $(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
# default
ARFLAGS = rv
# default
AS = as
# default
AR = ar
# default
OBJC = cc
# default
LINK.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_MACH)
# default
LINK.s = $(CC) $(ASFLAGS) $(LDFLAGS) $(TARGET_MACH)
# default
MAKE_COMMAND := make
# automatic
@D = $(patsubst %/,%,$(dir $@))
# default
COFLAGS = 
# default
COMPILE.mod = $(M2C) $(M2FLAGS) $(MODFLAGS) $(TARGET_ARCH)
# default
.VARIABLES := 
# automatic
%D = $(patsubst %/,%,$(dir $%))
# default
LINK.o = $(CC) $(LDFLAGS) $(TARGET_ARCH)
# default
TEXI2DVI = texi2dvi
# automatic
^D = $(patsubst %/,%,$(dir $^))
# automatic
%F = $(notdir $%)
# default
LEX.l = $(LEX) $(LFLAGS) -t
# default
.LOADED := 
# default
.INCLUDE_DIRS = /usr/local/include /usr/include /usr/include
# default
COMPILE.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
# makefile
MAKEFLAGS = p
# default
LINK.f = $(FC) $(FFLAGS) $(LDFLAGS) $(TARGET_ARCH)
# default
TANGLE = tangle
# makefile
CURDIR := /home/mofosyne
# default
PREPROCESS.F = $(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -F
# automatic
*D = $(patsubst %/,%,$(dir $*))
# default
.SHELLFLAGS := -c
# default
M2C = m2c
# default
COMPILE.p = $(PC) $(PFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
# default
COMPILE.cpp = $(COMPILE.cc)
# default
TEX = tex
# automatic
+D = $(patsubst %/,%,$(dir $+))
# makefile
MAKEFILE_LIST := 
# default
F77FLAGS = $(FFLAGS)
# automatic
@F = $(notdir $@)
# automatic
?D = $(patsubst %/,%,$(dir $?))
# default
COMPILE.def = $(M2C) $(M2FLAGS) $(DEFFLAGS) $(TARGET_ARCH)
# default
CTANGLE = ctangle
# automatic
*F = $(notdir $*)
# automatic
<D = $(patsubst %/,%,$(dir $<))
# default
COMPILE.C = $(COMPILE.cc)
# default
YACC.m = $(YACC) $(YFLAGS)
# default
LINK.C = $(LINK.cc)
# default
MAKE_HOST := x86_64-pc-linux-gnu
# default
LINK.c = $(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
# makefile
SHELL = /bin/sh
# default
LINK.F = $(FC) $(FFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
# default
MAKE = $(MAKE_COMMAND)
# default
FC = f77
# default
LINT = lint
# default
PC = pc
# default
MAKEFILES := 
# automatic
^F = $(notdir $^)
# default
LEX.m = $(LEX) $(LFLAGS) -t
# default
.LIBPATTERNS = lib%.so lib%.a
# default
CPP = $(CC) -E
# default
LINK.cc = $(CXX) $(CXXFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
# default
CHECKOUT,v = +$(if $(wildcard $@),,$(CO) $(COFLAGS) $< $@)
# default
COMPILE.f = $(FC) $(FFLAGS) $(TARGET_ARCH) -c
# default
COMPILE.r = $(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -c
# default
COMPILE.S = $(CC) $(ASFLAGS) $(CPPFLAGS) $(TARGET_MACH) -c
# automatic
?F = $(notdir $?)
# default
GET = get
# default
LINK.r = $(FC) $(FFLAGS) $(RFLAGS) $(LDFLAGS) $(TARGET_ARCH)
# automatic
+F = $(notdir $+)
# default
MAKEINFO = makeinfo
# 'override' directive
GNUMAKEFLAGS := 
# default
PREPROCESS.r = $(FC) $(FFLAGS) $(RFLAGS) $(TARGET_ARCH) -F
# default
LINK.m = $(OBJC) $(OBJCFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
# default
LINK.p = $(PC) $(PFLAGS) $(CPPFLAGS) $(LDFLAGS) $(TARGET_ARCH)
# default
YACC = yacc
# makefile
.DEFAULT_GOAL := 
# default
RM = rm -f
# default
WEAVE = weave
# default
MAKE_VERSION := 4.3
# default
F77 = $(FC)
# default
CWEAVE = cweave
# default
YACC.y = $(YACC) $(YFLAGS)
# default
LINK.cpp = $(LINK.cc)
# default
CO = co
# default
OUTPUT_OPTION = -o $@
# default
COMPILE.s = $(AS) $(ASFLAGS) $(TARGET_MACH)
# default
LEX = lex
# default
LINT.c = $(LINT) $(LINTFLAGS) $(CPPFLAGS) $(TARGET_ARCH)
# default
COMPILE.F = $(FC) $(FFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
# default
.RECIPEPREFIX := 
# automatic
<F = $(notdir $<)
# default
SUFFIXES := .out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S .mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo .w .ch .web .sh .elc .el
# default
LD = ld
# default
.FEATURES := target-specific order-only second-expansion else-if shortest-stem undefine oneshell nocomment grouped-target extra-prereqs archives jobserver output-sync check-symlink load
# default
CXX = g++
# default
CC = cc
# default
COMPILE.cc = $(CXX) $(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH) -c
# variable set hash-table stats:
# Load=158/1024=15%, Rehash=0, Collisions=28/186=15%

# Pattern-specific Variable Values

# No pattern-specific variable values.

# Directories

# RCS: could not be stat'd.
# SCCS: could not be stat'd.
# . (device 77, inode 28311560): 166 files, 57 impossibilities.

# 166 files, 57 impossibilities in 3 directories.

# Implicit Rules

%.out:

%.a:

%.ln:

%.o:

%: %.o
#  recipe to execute (built-in):
	$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.c:

%: %.c
#  recipe to execute (built-in):
	$(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.ln: %.c
#  recipe to execute (built-in):
	$(LINT.c) -C$* $<

%.o: %.c
#  recipe to execute (built-in):
	$(COMPILE.c) $(OUTPUT_OPTION) $<

%.cc:

%: %.cc
#  recipe to execute (built-in):
	$(LINK.cc) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.cc
#  recipe to execute (built-in):
	$(COMPILE.cc) $(OUTPUT_OPTION) $<

%.C:

%: %.C
#  recipe to execute (built-in):
	$(LINK.C) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.C
#  recipe to execute (built-in):
	$(COMPILE.C) $(OUTPUT_OPTION) $<

%.cpp:

%: %.cpp
#  recipe to execute (built-in):
	$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.cpp
#  recipe to execute (built-in):
	$(COMPILE.cpp) $(OUTPUT_OPTION) $<

%.p:

%: %.p
#  recipe to execute (built-in):
	$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.p
#  recipe to execute (built-in):
	$(COMPILE.p) $(OUTPUT_OPTION) $<

%.f:

%: %.f
#  recipe to execute (built-in):
	$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.f
#  recipe to execute (built-in):
	$(COMPILE.f) $(OUTPUT_OPTION) $<

%.F:

%: %.F
#  recipe to execute (built-in):
	$(LINK.F) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.F
#  recipe to execute (built-in):
	$(COMPILE.F) $(OUTPUT_OPTION) $<

%.f: %.F
#  recipe to execute (built-in):
	$(PREPROCESS.F) $(OUTPUT_OPTION) $<

%.m:

%: %.m
#  recipe to execute (built-in):
	$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.m
#  recipe to execute (built-in):
	$(COMPILE.m) $(OUTPUT_OPTION) $<

%.r:

%: %.r
#  recipe to execute (built-in):
	$(LINK.r) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.r
#  recipe to execute (built-in):
	$(COMPILE.r) $(OUTPUT_OPTION) $<

%.f: %.r
#  recipe to execute (built-in):
	$(PREPROCESS.r) $(OUTPUT_OPTION) $<

%.y:

%.ln: %.y
#  recipe to execute (built-in):
	$(YACC.y) $< 
	 $(LINT.c) -C$* y.tab.c 
	 $(RM) y.tab.c

%.c: %.y
#  recipe to execute (built-in):
	$(YACC.y) $< 
	 mv -f y.tab.c $@

%.l:

%.ln: %.l
#  recipe to execute (built-in):
	@$(RM) $*.c
	 $(LEX.l) $< > $*.c
	$(LINT.c) -i $*.c -o $@
	 $(RM) $*.c

%.c: %.l
#  recipe to execute (built-in):
	@$(RM) $@ 
	 $(LEX.l) $< > $@

%.r: %.l
#  recipe to execute (built-in):
	$(LEX.l) $< > $@ 
	 mv -f lex.yy.r $@

%.ym:

%.m: %.ym
#  recipe to execute (built-in):
	$(YACC.m) $< 
	 mv -f y.tab.c $@

%.yl:

%.s:

%: %.s
#  recipe to execute (built-in):
	$(LINK.s) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.s
#  recipe to execute (built-in):
	$(COMPILE.s) -o $@ $<

%.S:

%: %.S
#  recipe to execute (built-in):
	$(LINK.S) $^ $(LOADLIBES) $(LDLIBS) -o $@

%.o: %.S
#  recipe to execute (built-in):
	$(COMPILE.S) -o $@ $<

%.s: %.S
#  recipe to execute (built-in):
	$(PREPROCESS.S) $< > $@

%.mod:

%: %.mod
#  recipe to execute (built-in):
	$(COMPILE.mod) -o $@ -e $@ $^

%.o: %.mod
#  recipe to execute (built-in):
	$(COMPILE.mod) -o $@ $<

%.sym:

%.def:

%.sym: %.def
#  recipe to execute (built-in):
	$(COMPILE.def) -o $@ $<

%.h:

%.info:

%.dvi:

%.tex:

%.dvi: %.tex
#  recipe to execute (built-in):
	$(TEX) $<

%.texinfo:

%.info: %.texinfo
#  recipe to execute (built-in):
	$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@

%.dvi: %.texinfo
#  recipe to execute (built-in):
	$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<

%.texi:

%.info: %.texi
#  recipe to execute (built-in):
	$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@

%.dvi: %.texi
#  recipe to execute (built-in):
	$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<

%.txinfo:

%.info: %.txinfo
#  recipe to execute (built-in):
	$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@

%.dvi: %.txinfo
#  recipe to execute (built-in):
	$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<

%.w:

%.c: %.w
#  recipe to execute (built-in):
	$(CTANGLE) $< - $@

%.tex: %.w
#  recipe to execute (built-in):
	$(CWEAVE) $< - $@

%.ch:

%.web:

%.p: %.web
#  recipe to execute (built-in):
	$(TANGLE) $<

%.tex: %.web
#  recipe to execute (built-in):
	$(WEAVE) $<

%.sh:

%: %.sh
#  recipe to execute (built-in):
	cat $< >$@ 
	 chmod a+x $@

%.elc:

%.el:

(%): %
#  recipe to execute (built-in):
	$(AR) $(ARFLAGS) $@ $<

%.out: %
#  recipe to execute (built-in):
	@rm -f $@ 
	 cp $< $@

%.c: %.w %.ch
#  recipe to execute (built-in):
	$(CTANGLE) $^ $@

%.tex: %.w %.ch
#  recipe to execute (built-in):
	$(CWEAVE) $^ $@

%:: %,v
#  recipe to execute (built-in):
	$(CHECKOUT,v)

%:: RCS/%,v
#  recipe to execute (built-in):
	$(CHECKOUT,v)

%:: RCS/%
#  recipe to execute (built-in):
	$(CHECKOUT,v)

%:: s.%
#  recipe to execute (built-in):
	$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<

%:: SCCS/s.%
#  recipe to execute (built-in):
	$(GET) $(GFLAGS) $(SCCS_OUTPUT_OPTION) $<

# 92 implicit rules, 5 (5.4%) terminal.
# Files

# Not a target:
.cpp:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.cpp) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.c.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.c) $(OUTPUT_OPTION) $<

# Not a target:
.h:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.sh:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	cat $< >$@ 
	 chmod a+x $@

# Not a target:
.ch:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.r.f:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(PREPROCESS.r) $(OUTPUT_OPTION) $<

# Not a target:
.dvi:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.def.sym:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.def) -o $@ $<

# Not a target:
.m.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.m) $(OUTPUT_OPTION) $<

# Not a target:
.lm.m:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	@$(RM) $@ 
	 $(LEX.m) $< > $@

# Not a target:
.p.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.p) $(OUTPUT_OPTION) $<

# Not a target:
.texinfo:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.ln:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.C:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.C) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.web:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.elc:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.y.ln:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(YACC.y) $< 
	 $(LINT.c) -C$* y.tab.c 
	 $(RM) y.tab.c

# Not a target:
.l.c:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	@$(RM) $@ 
	 $(LEX.l) $< > $@

# Not a target:
Makefile:
#  Implicit rule search has been done.
#  File does not exist.
#  File has been updated.
#  Failed to be updated.

# Not a target:
.sym:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.r.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.r) $(OUTPUT_OPTION) $<

# Not a target:
.mod:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.mod) -o $@ -e $@ $^

# Not a target:
.def:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.S:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.S) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.texi.dvi:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<

# Not a target:
.txinfo.dvi:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<

# Not a target:
.y.c:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(YACC.y) $< 
	 mv -f y.tab.c $@

# Not a target:
.cpp.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.cpp) $(OUTPUT_OPTION) $<

# Not a target:
.el:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.cc:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.cc) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.tex:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.m:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.m) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.F:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.F) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.web.tex:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(WEAVE) $<

# Not a target:
.texinfo.info:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@

# Not a target:
.ym.m:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(YACC.m) $< 
	 mv -f y.tab.c $@

# Not a target:
.l:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.f:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.f) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.texi:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.DEFAULT:
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.r:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.r) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.a:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.w.tex:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(CWEAVE) $< - $@

# Not a target:
.s.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.s) -o $@ $<

# Not a target:
.txinfo:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.c.ln:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINT.c) -C$* $<

# Not a target:
.tex.dvi:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(TEX) $<

# Not a target:
.info:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.out:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.texinfo.dvi:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(TEXI2DVI) $(TEXI2DVI_FLAGS) $<

# Not a target:
.F.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.F) $(OUTPUT_OPTION) $<

# Not a target:
.yl:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.s:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.s) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.S.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.S) -o $@ $<

# Not a target:
.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.o) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.C.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.C) $(OUTPUT_OPTION) $<

# Not a target:
makefile:
#  Implicit rule search has been done.
#  File does not exist.
#  File has been updated.
#  Failed to be updated.

# Not a target:
.c:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.c) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.txinfo.info:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@

# Not a target:
.texi.info:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(MAKEINFO) $(MAKEINFO_FLAGS) $< -o $@

# Not a target:
.y:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.l.r:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LEX.l) $< > $@ 
	 mv -f lex.yy.r $@

# Not a target:
.p:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(LINK.p) $^ $(LOADLIBES) $(LDLIBS) -o $@

# Not a target:
.l.ln:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	@$(RM) $*.c
	 $(LEX.l) $< > $*.c
	$(LINT.c) -i $*.c -o $@
	 $(RM) $*.c

# Not a target:
.w:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.SUFFIXES: .out .a .ln .o .c .cc .C .cpp .p .f .F .m .r .y .l .ym .yl .s .S .mod .sym .def .h .info .dvi .tex .texinfo .texi .txinfo .w .ch .web .sh .elc .el
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.mod.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.mod) -o $@ $<

# Not a target:
.web.p:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(TANGLE) $<

# Not a target:
.S.s:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(PREPROCESS.S) $< > $@

# Not a target:
GNUmakefile:
#  Implicit rule search has been done.
#  File does not exist.
#  File has been updated.
#  Failed to be updated.

# Not a target:
.f.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.f) $(OUTPUT_OPTION) $<

# Not a target:
.ym:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.

# Not a target:
.cc.o:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(COMPILE.cc) $(OUTPUT_OPTION) $<

# Not a target:
.F.f:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(PREPROCESS.F) $(OUTPUT_OPTION) $<

# Not a target:
.w.c:
#  Builtin rule
#  Implicit rule search has not been done.
#  Modification time never checked.
#  File has not been updated.
#  recipe to execute (built-in):
	$(CTANGLE) $< - $@

# files hash-table stats:
# Load=75/1024=7%, Rehash=0, Collisions=134/1785=8%
# VPATH Search Paths

# No 'vpath' search paths.

# No general ('VPATH' variable) search path.

# strcache buffers: 2 (1) / strings = 643 / storage = 8357 B / avg = 12 B
# current buf: size = 8162 B / used = 198 B / count = 12 / avg = 16 B
# other used: total = 8159 B / count = 631 / avg = 12 B
# other free: total = 3 B / max = 3 B / min = 3 B / avg = 3 B

# strcache performance: lookups = 973 / hit rate = 33%
# hash-table stats:
# Load=643/8192=8%, Rehash=0, Collisions=30/973=3%
# Finished Make data base on Sun Oct 27 22:42:28 2024

Above was found via

make -p 2>/dev/null | sed '/^# environment$/,/^[^#]/d'

(2>/dev/null to suppress error message)

(sed is to remove sensitive environmental variables)

---

Below is generated by ChatGPT who was given the above as reference, but given a glanceover my me to check for obvious errors. I only focused on some of the variables as there is too many rules to deal with at this stage.

1. Variables

GNU Make defines many built-in variables to simplify compilation, linking, and preprocessing. Here are key variables categorized by function.

1.1. General Compiler Variables

Variable	Description	Default Value
CC	C compiler command	cc
CXX	C++ compiler command	g++
FC	Fortran compiler command	f77
AR	Archive creator for static libraries	ar
AS	Assembler command	as
LD	Linker command	ld
LEX	Lex command	lex
YACC	Yacc command	yacc
CPP	C preprocessor command	$(CC) -E
MAKEINFO	Generates .info files from .texinfo files	makeinfo
TEX	Processes .tex files to produce .dvi files	tex
TEXI2DVI	Converts .texi files to .dvi format	texi2dvi

1.2. Compilation & Linking Flags

Variable	Description	Default Value
CFLAGS	Flags for the C compiler
CXXFLAGS	Flags for the C++ compiler
FFLAGS	Flags for the Fortran compiler
LDFLAGS	Flags for the linker
CPPFLAGS	Flags for the C preprocessor (e.g., for -I includes)
ASFLAGS	Flags for the assembler
ARFLAGS	Flags for the archive command (ar)	rv
TARGET_ARCH	Flags specific to the target architecture

1.3. File-Specific Variables

Variable	Description	Default Value
OUTPUT_OPTION	Used to specify output files in commands	-o $@
.LIBPATTERNS	Pattern for finding library files	lib%.so lib%.a
SUFFIXES	Suffixes that GNU Make will recognize	Multiple common extensions for C/C++

1.4. Automatic Variables

Automatic variables provide references to parts of the command arguments in rule definitions.

Variable	Description
$@	Represents the target filename
$<	First prerequisite (dependency)
$^	All prerequisites (dependencies)
$*	Filename without suffix
$+	All prerequisites, with duplicates
$?	Prerequisites newer than the target
$(notdir $@)	Extracts the file name from the full path in $@
$(dir $@)	Extracts the directory path from $@

1.5. Makefile Control Variables

Variable	Description	Default Value
MAKEFLAGS	Flags passed to the make command	p
MAKE_VERSION	Version of GNU Make being used	4.3
MAKE_TERMERR	Terminal where errors are output	/dev/pts/0
MAKE_COMMAND	Command used to invoke GNU Make	make
GNUMAKEFLAGS	Overrides user-defined flags in GNU Make
CURDIR	The current working directory