# -*- makefile -*-
#
# comm.gmk: COMMON GNUMAKEFILE FRAGMENT
#
# $Id$
# Copyright (c) 2001-2020 Ravenbrook Limited.  See end of file for license.
#
# DESCRIPTION
#
# This makefile fragment is included in more specific makefiles for
# platforms which use GNU make.
#
# PARAMETERS
#
# Assumes the following variables and definitions:
# EXTRA_TARGETS     a list of extra targets to build
# CFLAGSCOMPILER    a list of flags for all compilations
# CFLAGSCOMPILERSTRICT a list of flags for almost all compilations
# CFLAGSCOMPILERLAX a list of flags for compilations which can't be as
#                   strict (e.g. because they have to include a third-
#                   party header file that isn't -ansi -pedantic).
# CFLAGSDEBUG       a list of flags for compilations with maximum debug
#                   information, and any optimization possible
# CFLAGSOPT         a list of flags for compilations with maximum
#                   optimization, and any debug info possible
# CC                the command for the C compiler
# LINKFLAGS         a list of flags passed to the linker
# ARFLAGSPFM        platform-specific flags for ar
# RANLIB            the command to index a library (default: none needed)
# gendep  optionally defined to be a command sequence for
#         generating the dependency file (.d) from a C file (.c);
#         it is used in a rule of the form:
#           $(PFM)/$(VARIETY)/%.d: %.c
# PFM     platform code, e.g. "sus8gc"
# LIBS    extra libraries to include in tests (usually "-lm")
# NOISY   if defined and non-empty, causes commands to be emitted
# MPMPF   platform-dependent C sources for the "mpm" part
# MPMS    assembler sources for the "mpm" part (.s files)
#
# %%PART: When adding a new part, add a new parameter above for the
# files included in the part.
#
# EDITING
#
# To add new targets, varieties, and parts:
# Search for the string "%%TARGET", "%%VARIETY", or "%%PART" in this
# makefile and follow the instructions.  If you're adding a part, you'll
# have to change the makefiles for all the platforms which use this
# makefile to define the source list for that part, and the GNUmakefile
# to include a recursive call to the name of that part.
#
# CHECK PARAMETERS
#
# Old versions of GNU make don't have the $(error) function, but lines
# starting "error" cause it to exit with an error. [These only test to
# see whether the symbol is defined. We could be more thorough and
# test the syntax and content. -- richard 1995-09-07]

ifndef CC
error "comm.gmk: CC not defined"
endif
ifndef CFLAGSCOMPILER
error "comm.gmk: CFLAGSCOMPILER not defined"
endif
ifndef CFLAGSDEBUG
error "comm.gmk: CFLAGSDEBUG not defined"
endif
ifndef CFLAGSOPT
error "comm.gmk: CFLAGSOPT not defined"
endif


# TELEMETRY TARGETS

EVENT_TARGETS = mpseventcnv mpseventpy mpseventsql mpseventtxt


# EXTRA TARGETS
#
# Don't build mpseventsql by default (might not have sqlite3 installed),
# but do build the other event target.

EXTRA_TARGETS ?= $(filter-out mpseventsql,$(EVENT_TARGETS))


#
# %%PART: When adding a new part, add checks for the parameter with the
#         sources for the new part.

ifndef PFM
error "comm.gmk: PFM not defined"
endif
ifndef MPMPF
error "comm.gmk: MPMPF not defined"
endif


# DECLARATIONS

ifdef NOISY
ECHO = :
else
.SILENT:
ECHO = echo
endif

.PHONY: phony


# C FLAGS

# These flags are included in all compilations.
# Avoid using PFMDEFS in platform makefiles, as they prevent the MPS being
# built with a simple command like "cc -c mps.c".
CFLAGSCOMMONSTRICT = $(PFMDEFS) $(CFLAGSCOMPILER) $(CFLAGSCOMPILERSTRICT)
CFLAGSCOMMONLAX = $(PFMDEFS) $(CFLAGSCOMPILER) $(CFLAGSCOMPILERLAX)

# %%VARIETY: When adding a new variety, define a macro containing the set
# of flags for the new variety.

# These flags are added to compilations for the indicated variety.
CFRASH = -DCONFIG_VAR_RASH $(CFLAGSOPT)
CFHOT  = -DCONFIG_VAR_HOT  $(CFLAGSOPT)
CFCOOL = -DCONFIG_VAR_COOL $(CFLAGSDEBUG)

# Bind CFLAGSVARIETY to the appropriate set of flags for the variety.
# %%VARIETY: When adding a new variety, add a test for the variety and
# set CFLAGSVARIETY here.
ifeq ($(VARIETY),rash)
CFLAGSVARIETY=$(CFRASH)
else
ifeq ($(VARIETY),hot)
CFLAGSVARIETY=$(CFHOT)
else
ifeq ($(VARIETY),cool)
CFLAGSVARIETY=$(CFCOOL)
else
ifneq ($(VARIETY),)
$(error Variety "$(VARIETY)" not recognized: must be rash/hot/cool)
endif
endif
endif
endif

CFLAGSSTRICT=$(CFLAGSCOMMONSTRICT) $(CFLAGSVARIETY) $(CFLAGS)
CFLAGSLAX=$(CFLAGSCOMMONLAX) $(CFLAGSVARIETY) $(CFLAGS)
ARFLAGS=rc$(ARFLAGSPFM)


# == Common definitions ==
# %%PART: When adding a new part, add it here, unless it's platform-specific
# These values are defined here because they have no variation between
# platforms.

AMC = poolamc.c
AMS = poolams.c
AWL = poolawl.c
LO = poollo.c
SNC = poolsnc.c
POOLN = pooln.c
MV2 = poolmv2.c
MVFF = poolmvff.c
TESTLIB = testlib.c
TESTTHR = testthrix.c
FMTDY = fmtdy.c fmtno.c
FMTDYTST = fmtdy.c fmtno.c fmtdytst.c
FMTHETST = fmthe.c fmtdy.c fmtno.c fmtdytst.c
FMTSCM = fmtscheme.c
PLINTH = mpsliban.c mpsioan.c
MPMCOMMON = \
    abq.c \
    arena.c \
    arenacl.c \
    arenavm.c \
    arg.c \
    boot.c \
    bt.c \
    buffer.c \
    cbs.c \
    dbgpool.c \
    dbgpooli.c \
    event.c \
    failover.c \
    format.c \
    freelist.c \
    global.c \
    land.c \
    ld.c \
    locus.c \
    message.c \
    meter.c \
    mpm.c \
    mpsi.c \
    nailboard.c \
    policy.c \
    pool.c \
    poolabs.c \
    poolmfs.c \
    poolmrg.c \
    protocol.c \
    range.c \
    rangetree.c \
    ref.c \
    ring.c \
    root.c \
    sa.c \
    sac.c \
    scan.c \
    seg.c \
    shield.c \
    splay.c \
    ss.c \
    table.c \
    trace.c \
    traceanc.c \
    tract.c \
    trans.c \
    tree.c \
    version.c \
    vm.c \
    walk.c
POOLS = $(AMC) $(AMS) $(AWL) $(LO) $(MV2) $(MVFF) $(SNC)
MPM = $(MPMCOMMON) $(MPMPF) $(POOLS) $(PLINTH)


# These map the source file lists onto object files and dependency files
# in the platform/variety directory.
#
# %%PART: When adding a new part, add a new macro which expands to the files
# included in the part.

ifdef VARIETY
MPMOBJ = $(MPM:%.c=$(PFM)/$(VARIETY)/%.o) \
         $(MPMS:%.s=$(PFM)/$(VARIETY)/%.o)
FMTDYOBJ = $(FMTDY:%.c=$(PFM)/$(VARIETY)/%.o)
FMTDYTSTOBJ = $(FMTDYTST:%.c=$(PFM)/$(VARIETY)/%.o)
FMTHETSTOBJ = $(FMTHETST:%.c=$(PFM)/$(VARIETY)/%.o)
FMTSCMOBJ = $(FMTSCM:%.c=$(PFM)/$(VARIETY)/%.o)
PLINTHOBJ = $(PLINTH:%.c=$(PFM)/$(VARIETY)/%.o)
POOLNOBJ = $(POOLN:%.c=$(PFM)/$(VARIETY)/%.o)
TESTLIBOBJ = $(TESTLIB:%.c=$(PFM)/$(VARIETY)/%.o)
TESTTHROBJ = $(TESTTHR:%.c=$(PFM)/$(VARIETY)/%.o)
endif


# == Test cases ==
#
# %%TARGET: When adding a new target, add it to one of the variables
# in this section. Library components go in LIB_TARGETS.

LIB_TARGETS=mps.a mpsplan.a

# Test executables go in TEST_TARGETS.

TEST_TARGETS=\
    abqtest \
    addrobj \
    airtest \
    amcss \
    amcsshe \
    amcssth \
    amsss \
    amssshe \
    apss \
    arenacv \
    awlut \
    awluthe \
    awlutth \
    btcv \
    bttest \
    djbench \
    extcon \
    finalcv \
    finaltest \
    forktest \
    fotest \
    gcbench \
    landtest \
    locbwcss \
    lockcov \
    lockut \
    locusss \
    locv \
    messtest \
    mpmss \
    mpsicv \
    mv2test \
    nailboardtest \
    poolncv \
    qs \
    sacss \
    segsmss \
    sncss \
    steptest \
    tagtest \
    teletest \
    walkt0 \
    zcoll \
    zmess \
    ztfm

# This target records programs that we were once able to build but
# can't at the moment:

UNBUILDABLE_TARGETS=\
    replay # depends on the EPVM pool

ALL_TARGETS=$(LIB_TARGETS) $(TEST_TARGETS) $(EXTRA_TARGETS)


# == Pseudo-targets ==

all: $(ALL_TARGETS)


# == Automated test suites ==
#
# See design.mps.tests.target.

TEST_SUITES=testrun testci testall testansi testpollnone

$(addprefix $(PFM)/$(VARIETY)/,$(TEST_SUITES)): $(TEST_TARGETS)
	../tool/testrun.sh -s "$(notdir $@)" "$(PFM)/$(VARIETY)"


# == Automated performance testing ==
#
# See design.mps.tests.target.testratio.

TESTRATIO_SEED = 1564912146

define ratio
TIME_HOT=$$(/usr/bin/time -p $(PFM)/hot/$(1) -x $(TESTRATIO_SEED) $(2) 2>&1 | tail -2 | awk '{T += $$2} END {print T}'); \
TIME_RASH=$$(/usr/bin/time -p $(PFM)/rash/$(1) -x $(TESTRATIO_SEED) $(2) 2>&1 | tail -2 | awk '{T += $$2} END {print T}'); \
RATIO=$$(awk "BEGIN{print int(100 * $$TIME_HOT / $$TIME_RASH)}"); \
printf "Performance ratio (hot/rash) for $(2): %d%%\n" $$RATIO
endef

testratio: phony
	$(MAKE) -f $(PFM).gmk VARIETY=hot djbench gcbench
	$(MAKE) -f $(PFM).gmk VARIETY=rash djbench gcbench
	$(call ratio,gcbench,amc)
	$(call ratio,djbench,mvff)


# == MMQA test suite ==
#
# See test/README for documentation on running the MMQA test suite.

MMQA=perl test/qa -p $(PFM) -v $(VARIETY)

$(PFM)/$(VARIETY)/testmmqa:
	if [ "$(VARIETY)" = "cool" ]; then (cd ../test && $(MMQA) runset testsets/coolonly); fi
	(cd ../test && $(MMQA) runset testsets/argerr testsets/conerr testsets/passing)


# == Toy Scheme interpreter ==

testscheme: phony
	$(MAKE) -C ../example/scheme test


# These convenience targets allow one to type "make foo" to build target
# foo in selected varieties (or none, for the latter rule).

$(LIB_TARGETS) $(TEST_TARGETS) $(EVENT_TARGETS) $(TEST_SUITES) testmmqa: phony
ifdef VARIETY
	$(MAKE) -f $(PFM).gmk TARGET=$@ variety
else
	$(MAKE) -f $(PFM).gmk TARGET=$@ target
endif


# "clean" removes the directory containing the build results for the
# platform.

clean: phony
	$(ECHO) "$(PFM): $@"
	rm -rf "$(PFM)"

# "target" builds some varieties of the target named in the TARGET
# macro.
#
# %%VARIETY: When adding a new target, optionally add a recursive make call
# for the new variety, if it should be built by default.  It probably
# shouldn't without a product design decision and an update of the readme
# and build manual!
#
# Note that we build VARIETY=cool before VARIETY=hot because
# the former doesn't need to optimize and so detects errors more
# quickly; and because the former uses file-at-a-time compilation and
# so can pick up where it left off instead of having to start from the
# beginning of mps.c

ifdef TARGET
ifndef VARIETY
target: phony
	$(MAKE) -f $(PFM).gmk VARIETY=cool variety
	$(MAKE) -f $(PFM).gmk VARIETY=hot variety
endif
endif


# "variety" builds the target named in the TARGET macro using the
# variety named in the VARIETY macro.

ifdef VARIETY
ifdef TARGET
variety: $(PFM)/$(VARIETY)/$(TARGET)
endif
endif


# THE MPS LIBRARY
#
# The MPS library is built in two ways:
#
#   1. In the usual way, from a pile of object files compiled from their
#      corresponding sources.
#
#   2. From mps.c, which effectively concatenates all the sources, allowing
#      important global optimisation and inlining to occur.
#
# We mostly use the method (2), because it is fast to compile and execute.
# But we use method (1) for some varieties to ensure correctness of
# code (linkage errors are masked by (2)) and to maintain a correct list
# of source files in case method (2) won't work on some future constrained
# platform.
#
# %%VARIETY: When adding a new variety, add a rule for how to build the
# MPS library for the variety.

$(PFM)/rash/mps.a: $(PFM)/rash/mps.o
$(PFM)/hot/mps.a: $(PFM)/hot/mps.o
$(PFM)/cool/mps.a: $(MPMOBJ)


# OTHER GENUINE TARGETS
#
# Each line defines an executable or library target to be built and the
# object files it is built from.  These lines add dependencies to the
# generic rules below, and should not include commands to execute.
#
# %%TARGET: When adding a new target, add the dependencies for the new target
# here.

ifdef VARIETY

$(PFM)/$(VARIETY)/abqtest: $(PFM)/$(VARIETY)/abqtest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/addrobj: $(PFM)/$(VARIETY)/addrobj.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/airtest: $(PFM)/$(VARIETY)/airtest.o \
	$(FMTSCMOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/amcss: $(PFM)/$(VARIETY)/amcss.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/amcsshe: $(PFM)/$(VARIETY)/amcsshe.o \
	$(FMTHETSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/amcssth: $(PFM)/$(VARIETY)/amcssth.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(TESTTHROBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/amsss: $(PFM)/$(VARIETY)/amsss.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/amssshe: $(PFM)/$(VARIETY)/amssshe.o \
	$(FMTHETSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/apss: $(PFM)/$(VARIETY)/apss.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/arenacv: $(PFM)/$(VARIETY)/arenacv.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/awlut: $(PFM)/$(VARIETY)/awlut.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(TESTTHROBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/awluthe: $(PFM)/$(VARIETY)/awluthe.o \
        $(FMTHETSTOBJ) $(TESTLIBOBJ) $(TESTTHROBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/awlutth: $(PFM)/$(VARIETY)/awlutth.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(TESTTHROBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/btcv: $(PFM)/$(VARIETY)/btcv.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/bttest: $(PFM)/$(VARIETY)/bttest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/djbench: $(PFM)/$(VARIETY)/djbench.o \
	$(TESTLIBOBJ) $(TESTTHROBJ)

$(PFM)/$(VARIETY)/extcon: $(PFM)/$(VARIETY)/extcon.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/finalcv: $(PFM)/$(VARIETY)/finalcv.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/finaltest: $(PFM)/$(VARIETY)/finaltest.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/forktest: $(PFM)/$(VARIETY)/forktest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/fotest: $(PFM)/$(VARIETY)/fotest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/gcbench: $(PFM)/$(VARIETY)/gcbench.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(TESTTHROBJ)

$(PFM)/$(VARIETY)/landtest: $(PFM)/$(VARIETY)/landtest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/locbwcss: $(PFM)/$(VARIETY)/locbwcss.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/lockcov: $(PFM)/$(VARIETY)/lockcov.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/lockut: $(PFM)/$(VARIETY)/lockut.o \
	$(TESTLIBOBJ) $(TESTTHROBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/locusss: $(PFM)/$(VARIETY)/locusss.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/locv: $(PFM)/$(VARIETY)/locv.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/messtest: $(PFM)/$(VARIETY)/messtest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/mpmss: $(PFM)/$(VARIETY)/mpmss.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/mpsicv: $(PFM)/$(VARIETY)/mpsicv.o \
	$(FMTDYTSTOBJ) $(FMTHETSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/mv2test: $(PFM)/$(VARIETY)/mv2test.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/nailboardtest: $(PFM)/$(VARIETY)/nailboardtest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/poolncv: $(PFM)/$(VARIETY)/poolncv.o \
	$(POOLNOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/qs: $(PFM)/$(VARIETY)/qs.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/sacss: $(PFM)/$(VARIETY)/sacss.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/segsmss: $(PFM)/$(VARIETY)/segsmss.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/sncss: $(PFM)/$(VARIETY)/sncss.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/steptest: $(PFM)/$(VARIETY)/steptest.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/tagtest: $(PFM)/$(VARIETY)/tagtest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/teletest: $(PFM)/$(VARIETY)/teletest.o \
	$(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/walkt0: $(PFM)/$(VARIETY)/walkt0.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/zcoll: $(PFM)/$(VARIETY)/zcoll.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/zmess: $(PFM)/$(VARIETY)/zmess.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/ztfm: $(PFM)/$(VARIETY)/ztfm.o \
	$(FMTDYTSTOBJ) $(TESTLIBOBJ) $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/mpseventcnv: $(PFM)/$(VARIETY)/eventcnv.o \
  $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/mpseventpy: $(PFM)/$(VARIETY)/eventpy.o \
  $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/mpseventtxt: $(PFM)/$(VARIETY)/eventtxt.o \
  $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/mpseventsql: $(PFM)/$(VARIETY)/eventsql.o \
  $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/replay: $(PFM)/$(VARIETY)/replay.o \
  $(PFM)/$(VARIETY)/eventrep.o \
  $(PFM)/$(VARIETY)/table.o \
  $(PFM)/$(VARIETY)/mps.a

$(PFM)/$(VARIETY)/mpsplan.a: $(PLINTHOBJ)

endif


# GENERIC RULES
#
# These generate build output in the <pfm>/<variety> directory.

# Object files

define run-cc-strict
$(ECHO) "$(PFM): $@"
mkdir -p $(PFM)
mkdir -p $(PFM)/$(VARIETY)
$(CC) $(CFLAGSSTRICT) -c -o $@ $<
endef

define run-cc-lax
$(ECHO) "$(PFM): $@ - compiling with lax flags."
mkdir -p $(PFM)
mkdir -p $(PFM)/$(VARIETY)
$(CC) $(CFLAGSLAX) -c -o $@ $<
endef

# .rule.c-to-o:
$(PFM)/$(VARIETY)/%.o: %.c
	$(run-cc-strict)

$(PFM)/$(VARIETY)/eventsql.o: eventsql.c
	$(run-cc-lax)

$(PFM)/$(VARIETY)/%.o: %.s
	$(run-cc-strict)

$(PFM)/$(VARIETY)/%.o: %.S
	$(run-cc-strict)

# Dependencies
#
# These are included into _this_ makefile (see below).  GNU make does the
# right thing as long as it knows how to make the dependency files before
# including them.

ifdef gendep

$(PFM)/$(VARIETY)/%.d: %.c
	$(ECHO) "$(PFM): $@"
	mkdir -p $(PFM)
	mkdir -p $(PFM)/$(VARIETY)
	$(gendep)

ifdef VARIETY
ifdef TARGET

# %%VARIETY: When adding a new variety, add the dependencies files for it
# here.
ifeq ($(VARIETY),rash)
include $(PFM)/$(VARIETY)/mps.d
else
ifeq ($(VARIETY),hot)
include $(PFM)/$(VARIETY)/mps.d
else
include $(MPM:%.c=$(PFM)/$(VARIETY)/%.d)
endif # VARIETY != hot
endif # VARIETY != rash

# %%PART: When adding a new part, add the dependencies file for the
# new part here.
include \
    $(FMTDY:%.c=$(PFM)/$(VARIETY)/%.d) \
    $(FMTDYTST:%.c=$(PFM)/$(VARIETY)/%.d) \
    $(FMTHETST:%.c=$(PFM)/$(VARIETY)/%.d) \
    $(FMTSCM:%.c=$(PFM)/$(VARIETY)/%.d) \
    $(PLINTH:%.c=$(PFM)/$(VARIETY)/%.d) \
    $(POOLN:%.c=$(PFM)/$(VARIETY)/%.d) \
    $(TESTLIB:%.c=$(PFM)/$(VARIETY)/%.d) \
    $(TESTTHR:%.c=$(PFM)/$(VARIETY)/%.d) \
    $(EXTRA_TARGETS:mps%=$(PFM)/$(VARIETY)/%.d) \
    $(TEST_TARGETS:%=$(PFM)/$(VARIETY)/%.d)

endif # !defined TARGET
endif # !defined VARIETY

endif # !defined gendep

# Library

ifndef RANLIB
RANLIB = :
endif

$(PFM)/$(VARIETY)/%.a:
	$(ECHO) "$(PFM): $@"
	rm -f $@
	$(AR) $(ARFLAGS) $@ $^
	$(RANLIB) $@

# Executable

$(PFM)/$(VARIETY)/%:
	$(ECHO) "$(PFM): $@"
	$(CC) $(CFLAGSSTRICT) $(LINKFLAGS) -o $@ $^ $(LIBS)

$(PFM)/$(VARIETY)/mpseventsql:
	$(ECHO) "$(PFM): $@"
	$(CC) $(CFLAGSLAX) $(LINKFLAGS) -o $@ $^ $(LIBS) -lsqlite3

# Special targets for development

# Currently FreeBSD 7 GCC 4.2.1 is the best platform we have for warning
# us about strict aliasing rule violations caused by type puns.  This
# target reveals them, and produces an assembler output file that can be
# examined to see if they're actually dangerous.  RB 2012-09-07

find-puns: phony
	{ echo '#include "mps.c"'; echo '#include "fmtdy.c"'; } | \
	gcc -S -fverbose-asm -ansi -pedantic -Wall -Wstrict-aliasing=2 -O3 -x c -o pun.s -


# C. COPYRIGHT AND LICENSE
#
# Copyright (C) 2001-2020 Ravenbrook Limited <https://www.ravenbrook.com/>.
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# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the
#    distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.