path: root/Makefile

# Copyright 2009-2018
# Kaz Kylheku <kaz@kylheku.com>
# Vancouver, Canada
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# 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 "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 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, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT 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.

.NOTPARALLEL:

-include config.make

VERBOSE :=
TXR_CFLAGS := $(CFLAGS)
TXR_CFLAGS += -iquote . $(if $(top_srcdir), -iquote $(top_srcdir)) \
              $(LANG_FLAGS) $(DIAG_FLAGS) \
              $(DBG_FLAGS) $(PLATFORM_CFLAGS) $(EXTRA_FLAGS)
TXR_CFLAGS += $(filter-out $(REMOVE_FLAGS),$(TXR_CFLAGS))
TXR_LDFLAGS := $(LDFLAGS)
TXR_LDFLAGS := -lm $(CONF_LDFLAGS) $(PLATFORM_LDFLAGS) $(EXTRA_LDFLAGS)

ifneq ($(subst g++,@,$(notdir $(TXR_CC))),$(notdir $(TXR_CC)))
TXR_CFLAGS := $(filter-out -Wmissing-prototypes -Wstrict-prototypes,$(TXR_CFLAGS))
endif

# TXR objects
ADD_CONF = $(addprefix $(1)/,$(2))
EACH_CONF = $(foreach conf,opt dbg,\
               $(foreach tgt,$(1),$(call ADD_CONF,$(conf),$(tgt))))

OBJS-y := # make sure OBJ-y is a value variable, not a macro variable
EXTRA_OBJS-y :=

OBJS := txr.o lex.yy.o y.tab.o match.o lib.o regex.o gc.o unwind.o stream.o
OBJS += arith.o hash.o utf8.o filter.o eval.o parser.o rand.o combi.o sysif.o
OBJS += args.o lisplib.o cadr.o struct.o itypes.o buf.o jmp.o protsym.o ffi.o
OBJS += strudel.o vm.o
OBJS-$(debug_support) += debug.o
OBJS-$(have_syslog) += syslog.o
OBJS-$(have_glob) += glob.o
OBJS-$(have_ftw) += ftw.o
OBJS-$(have_posix_sigs) += signal.o
OBJS-$(have_sockets) += socket.o
OBJS-$(have_termios) += termios.o
OBJS-$(have_termios) += linenoise/linenoise.o
EXTRA_OBJS-$(add_win_res) += win/txr.res

STDLIB_SRCS := $(wildcard share/txr/stdlib/*.tl)
STDLIB_TLOS := $(patsubst %.tl,%.tlo,$(STDLIB_SRCS))
STDLIB_TLOS2 := $(patsubst %.tl,%.tlo2,$(STDLIB_SRCS))

STDLIB_EARLY_PATS := %/error.tlo # these must be compiled first
STDLIB_EARLY_TLOS := $(filter $(STDLIB_EARLY_PATS),$(STDLIB_TLOS))
STDLIB_LATE_TLOS := $(filter-out $(STDLIB_EARLY_TLOS),$(STDLIB_TLOS))

ifneq ($(have_git),)
SRCS := $(addprefix $(top_srcdir),\
                    $(filter-out lex.yy.c y.tab.c y.tab.h,\
                                 $(shell git $(if $(top_srcdir), \
                                                --work-tree=$(top_srcdir)) \
                                             --git-dir=$(top_srcdir).git \
                                              ls-files "*.c" "*.h" "*.l" "*.y")))
endif

# MPI objects
MPI_OBJ_BASE=mpi.o mplogic.o

MPI_OBJS := $(addprefix mpi/,$(MPI_OBJ_BASE))

OBJS += $(MPI_OBJS)

DBG_OBJS := $(call ADD_CONF,dbg,$(OBJS) $(OBJS-y))
OPT_OBJS := $(call ADD_CONF,opt,$(OBJS) $(OBJS-y))
OBJS := $(DBG_OBJS) $(OPT_OBJS)

TXR := ./$(PROG)

.SUFFIXES:
MAKEFLAGS += --no-builtin-rules

V = $(if $(VERBOSE),,@)

ABBREV = $(if $(VERBOSE),\
           @:,\
           @printf "%s %s -> %s\n" $(1) \
           "$(patsubst $(top_srcdir)%,%,$<)" $@)
# Filtering out $(DEP_$@) allows the abbreviated output to show just the direct
# prerequisites without the long laundry list of additional dependencies.
ABBREVN = $(if $(VERBOSE),\
            @:,\
            @printf "%s %s -> %s\n" $(1) \
            "$(patsubst $(top_srcdir)%,%,$(filter-out $(DEP_$@),$^))" $@)
ABBREV3 = $(if $(VERBOSE),@:,@printf "%s %s -> %s\n" $(1) "$(3)" $(2))

define DEPGEN
$(V)sed ':x; /\\$$/ { N; s/\\\n//; tx }' < $(1) | \
  sed -e '1s/^/DEP_/' -e '1s/: [^ ]\+/ :=/' > $(1:.d=.v)
endef

define SH
$(if $(VERBOSE),                                        \
  $(1),                                                 \
  $(V)cmd='$(subst ','\'',$(1))' ;                      \
  if ! eval "$$cmd" ; then                              \
    printf "make: failing command:\n%s\n" "$$cmd";      \
    exit 1;                                             \
  fi)
endef

define COMPILE_C
$(call ABBREV,CC)
$(call SH,$(TXR_CC) $(OPT_FLAGS) $(TXR_CFLAGS) -c -o $@ $<)
endef

define COMPILE_C_WITH_DEPS
$(call ABBREV,CC)
$(call SH,mkdir -p $(dir $@))
$(call SH,$(TXR_CC) -MMD -MT $@ $(1) $(TXR_CFLAGS) -c -o $@ $<)
$(call DEPGEN,${@:.o=.d})
endef

define LINK_PROG
$(call ABBREVN,LINK)
$(call SH,$(TXR_CC) $(1) $(TXR_CFLAGS) -o $@ $^ $(TXR_LDFLAGS))
endef

define WINDRES
$(call ABBREV,RES)
$(call SH,mkdir -p $(dir $@))
$(call SH,windres -O coff -DTXR_VER=$(txr_ver) $< $@)
endef

define COMPILE_TL
$(call ABBREV,TXR)
$(call SH,$(TXR) -e \
          "(progn (in-package sys) (compile-file \"$<\" \"$@.tmp\"))")
$(call SH,mv $@.tmp $@)
endef

ifneq ($(top_srcdir),)
dbg/%.o: $(top_srcdir)%.c
        $(call COMPILE_C_WITH_DEPS,$(DBG_ONLY_FLAGS))

opt/%.o: $(top_srcdir)%.c
        $(call COMPILE_C_WITH_DEPS,$(OPT_FLAGS))

dbg/%.o: $(top_srcdir)%.S
        $(call COMPILE_C_WITH_DEPS,)

opt/%.o: $(top_srcdir)%.S
        $(call COMPILE_C_WITH_DEPS,)
endif

dbg/%.o: %.c
        $(call COMPILE_C_WITH_DEPS,$(DBG_ONLY_FLAGS))

opt/%.o: %.c
        $(call COMPILE_C_WITH_DEPS,$(OPT_FLAGS))

dbg/%.o: %.S
        $(call COMPILE_C_WITH_DEPS,)

opt/%.o: %.S
        $(call COMPILE_C_WITH_DEPS,)

dbg/%-win.o: $(top_srcdir)%.c
        $(call COMPILE_C_WITH_DEPS,-DCONFIG_WIN_MAIN=1)

opt/%-win.o: $(top_srcdir)%.c
        $(call COMPILE_C_WITH_DEPS,-DCONFIG_WIN_MAIN=1 $(OPT_FLAGS))

win/%.res: $(top_srcdir)win/%.rc $(top_srcdir)win/%.ico
        $(call WINDRES)

%.tlo: %.tl | $(PROG)
        $(call COMPILE_TL)

%.tlo2: %.tl | $(PROG)
        $(call COMPILE_TL)
        $(call SH,F=$@ T=$${F%.tlo2}.tlo; cmp -s $$F $$T || cp $$F $$T)

# The following pattern rule is used for test targets built by configure
%.o: %.c
        $(call COMPILE_C)

ifeq ($(PROG),)
.PHONY: notconfigured
notconfigured:
        $(V)echo "configuration missing: you didn't run the configure script!"
        $(V)exit 1
endif

ifneq ($(top_srcdir),)
ifneq ($(wildcard $(top_srcdir)/config.h $(top_srcdir)/y.tab.h),)
.PHONY: tainted
tainted:
        $(V)echo "Source directory $(top_srcdir) is in a configured state."
        $(V)echo "Generated files there with interfere with the build here."
        $(V)echo "Please do a \"make distclean\" in $(top_srcdir) first."
        $(V)exit 1
endif
endif

.PHONY: all stage1 stage2

all: $(BUILD_TARGETS) stage1 stage2

$(STDLIB_LATE_TLOS): | $(STDLIB_EARLY_TLOS)

stage1: $(STDLIB_TLOS)

stage2: $(STDLIB_TLOS2)

$(PROG): $(OPT_OBJS) $(EXTRA_OBJS-y)
        $(call LINK_PROG,$(OPT_FLAGS))

$(PROG)-dbg: $(DBG_OBJS) $(EXTRA_OBJS-y)
        $(call LINK_PROG,)

$(PROG)-win: $(patsubst %/txr.o,%/txr-win.o,$(OPT_OBJS)) $(EXTRA_OBJS-y)
        $(call LINK_PROG,-mwindows $(OPT_FLAGS))

$(PROG)-win-dbg: $(patsubst %/txr.o,%/txr-win.o,$(DBG_OBJS)) $(EXTRA_OBJS-y)
        $(call LINK_PROG,-mwindows)

# Newline constant
define NL


endef

CM := ,

define DEP
$(1): $(2)

$(eval $(foreach item,$(1),DEP_$(item) += $(2)$(NL)))
endef

# Pull in dependencies
-include $(OBJS:.o=.d) $(OBJS:.o=.v)

# Add dependencies
$(call DEP,$(OBJS) $(EXTRA_OBJS-y),config.make config.h)

$(eval $(foreach item,lex.yy.o txr.o match.o parser.o,\
          $(call DEP,opt/$(item) dbg/$(item),y.tab.h)))

$(eval $(foreach item,y.tab.c y.tab.h lex.yy.c,\
          $(call DEP,$(item),config.make config.h)))

BS_LIC_FROM := ^[/][*] Bison impl
BS_LIC_TO := Bison.  [*][/]

lex.yy.c: $(top_srcdir)parser.l
        $(call ABBREV,LEX)
        $(call SH,rm -f $@)
        $(call SH,                                              \
          if $(TXR_LEX) $(LEX_DBG_FLAGS) $< ; then              \
            sed -e s@//.*@@ < $@ > $@.tmp ;                     \
            mv $@.tmp $@ ;                                      \
          else                                                  \
            exit 1 ;                                            \
          fi)
        $(call SH,chmod a-w $@)

y.tab.h: y.tab.c
        $(call SH,                                              \
          if ! [ -e y.tab.h ] ; then                            \
            echo "Someone removed y.tab.h but left y.tab.c" ;   \
            echo "Remove y.tab.c and re-run make" ;             \
            exit 1 ;                                            \
          fi)

y.tab.c: $(top_srcdir)parser.y
        $(call ABBREV,YACC)
        $(call SH,                                              \
          if [ -e y.tab.h ]; then mv y.tab.h y.tab.h.old ; fi)
        $(call SH,rm -f y.tab.c)
        $(call SH,                                              \
          if $(TXR_YACC) -v -d $< ; then                        \
            grep -qs '$(BS_LIC_FROM)' y.tab.c &&                \
              grep -qs '$(BS_LIC_TO)' y.tab.c &&                \
              sed -e '/$(BS_LIC_FROM)/$(CM)/$(BS_LIC_TO)/d'     \
                  < y.tab.c > y.tab.c.tmp &&                    \
              mv y.tab.c.tmp y.tab.c ;                          \
            chmod a-w y.tab.c ;                                 \
            sed -e '/yyparse/d' < y.tab.h > y.tab.h.tmp &&      \
              mv y.tab.h.tmp y.tab.h ;                          \
            if cmp -s y.tab.h y.tab.h.old ; then                \
              mv y.tab.h.old y.tab.h ;                          \
            fi ;                                                \
          else                                                  \
            rm y.tab.c ;                                        \
            false ;                                             \
          fi)

# Suppress useless sccs id array and unused label warning in byacc otuput.
# Bison-generated parser also tests for this lint define.
$(call EACH_CONF,y.tab.o): TXR_CFLAGS += -Dlint

opt/ffi.o: TXR_CFLAGS += $(LIBFFI_CFLAGS)

dbg/ffi.o: TXR_CFLAGS += $(LIBFFI_CFLAGS)

# txr.c needs to know the relative datadir path to do some sysroot
# calculations.

opt/txr.o: TXR_CFLAGS += -DPROG_NAME=\"$(PROG)\" \
                         -DTXR_REL_PATH=\"$(bindir_rel)/$(PROG)$(EXE)\" \
                                                                 -DTXR_INST_PATH=\"$(bindir)/$(PROG)$(EXE)\"
dbg/txr.o: TXR_CFLAGS += -DPROG_NAME=\"$(PROG)-dbg\" \
                         -DTXR_REL_PATH=\"$(bindir_rel)/$(PROG)-dbg$(EXE)\" \
                                                                 -DTXR_INST_PATH=\"$(bindir)/$(PROG)$(EXE)\"
opt/txr-win.o: TXR_CFLAGS += -DPROG_NAME=\"$(PROG)-win\" \
                             -DTXR_REL_PATH=\"$(bindir_rel)/$(PROG)-win$(EXE)\"
dbg/txr-win.o: TXR_CFLAGS += -DPROG_NAME=\"$(PROG)-win-dbg\" \
                             -DTXR_REL_PATH=\"$(bindir_rel)/$(PROG)-win-dbg$(EXE)\"
$(call EACH_CONF,txr.o txr-win.o): TXR_CFLAGS += -DEXE_SUFF=\"$(EXE)\"
$(call EACH_CONF,txr.o txr-win.o): TXR_CFLAGS += -DTXR_VER=\"$(txr_ver)\"

$(call EACH_CONF,linenoise/linenoise.o): TXR_CFLAGS += -D$(termios_define)
.PHONY: rebuild clean repatch clean-tlo distclean

ifeq ($(PROG),)
rebuild clean repatch: notconfigured

distclean:
        $(V)echo "executing generic cleanup for non-configured directory"
        rm -f txr txr.exe txr-dbg txr-dbg.exe txr-win.exe txr-win-dbg.exe
        rm -rf y.tab.c lex.yy.c y.tab.h y.output
        rm -rf config opt dbg
        rm -f config.*
        rm -rf mpi-1.?.?
else
rebuild: clean repatch $(PROG)

clean: conftest.clean clean-tlo
        rm -f $(PROG)$(EXE) $(PROG)-dbg$(EXE) y.tab.c lex.yy.c y.tab.h y.output
        rm -f y.tab.h.old
        rm -f $(PROG)-win$(EXE) $(PROG)-win-dbg$(EXE)
        rm -rf opt dbg $(EXTRA_OBJS-y)

clean-tlo:
        rm -f $(STDLIB_TLOS) $(STDLIB_TLOS2)

distclean: clean
        rm -f config.h config.make config.log
endif

TESTS_OK := $(addprefix tst/,\
               $(patsubst %.tl,%.ok,\
                  $(patsubst %.txr,%.ok,\
                     $(wildcard $(addprefix tests/*/*.,txr tl)))))

.PHONY: tests
tests: $(TESTS_OK)
        $(V)echo "** tests passed!"

tst/tests/001/%: TXR_ARGS := tests/001/data
tst/tests/001/query-1.ok: TXR_OPTS := -B
tst/tests/001/query-2.ok: TXR_OPTS := -B
tst/tests/001/query-4.ok: TXR_OPTS := -B
tst/tests/002/%: TXR_OPTS := -C 142 -DTESTDIR=tests/002
tst/tests/004/%: TXR_ARGS := -a 123 -b -c
tst/tests/005/%: TXR_ARGS := tests/005/data
tst/tests/005/%: TXR_OPTS := -B
tst/tests/006/%: TXR_ARGS := tests/006/data
tst/tests/006/%: TXR_OPTS := -B
tst/tests/006/freeform-3.ok: TXR_ARGS := tests/006/passwd
tst/tests/008/tokenize.ok: TXR_ARGS := tests/008/data
tst/tests/008/configfile.ok: TXR_ARGS := tests/008/configfile
tst/tests/008/students.ok: TXR_ARGS := tests/008/students.xml
tst/tests/008/soundex.ok: TXR_ARGS := soundex sowndex lloyd lee jackson robert
tst/tests/008/filtenv.ok: TXR_OPTS := -B
tst/tests/009/json.ok: TXR_ARGS := $(addprefix tests/009/,webapp.json pass1.json)
tst/tests/010/align-columns.ok: TXR_ARGS := tests/010/align-columns.dat
tst/tests/010/block.ok: TXR_OPTS := -B
tst/tests/010/reghash.ok: TXR_OPTS := -B
tst/tests/013/maze.ok: TXR_ARGS := 20 20

tst/tests/002/%: TXR_SCRIPT_ON_CMDLINE := y

tst/tests/011/%: TXR_DBG_OPTS :=
tst/tests/012/%: TXR_DBG_OPTS :=
tst/tests/013/%: TXR_DBG_OPTS :=
tst/tests/014/%: TXR_DBG_OPTS :=
tst/tests/015/%: TXR_DBG_OPTS :=
tst/tests/016/%: TXR_DBG_OPTS :=
tst/tests/017/%: TXR_DBG_OPTS :=

TST_EXPECTED  = $(word 2,$^)
TST_OUT = $(patsubst %.expected,tst/%.out,$(TST_EXPECTED))

.PRECIOUS: tst/%.out
tst/%.ok: %.txr %.expected $(TXR)
        $(call ABBREV,TXR)
        $(call SH,mkdir -p $(dir $@))
        $(call SH,                                                            \
          $(if $(TXR_SCRIPT_ON_CMDLINE),                                      \
            $(TXR) $(TXR_DBG_OPTS) $(TXR_OPTS) -c "$$(cat $<)"                \
            $(TXR_ARGS) > $(TST_OUT),                                         \
            $(TXR) $(TXR_DBG_OPTS) $(TXR_OPTS) $< $(TXR_ARGS) > $(TST_OUT)))
        $(call SH,                                                            \
          if ! diff -u $(TST_EXPECTED) $(TST_OUT) ; then                      \
            exit 1 ;                                                          \
          fi)
        $(call SH,touch $@)

tst/%.ok: %.tl %.expected $(TXR)
        $(call ABBREV,TXR)
        $(call SH,mkdir -p $(dir $@))
        $(call SH,\
          $(TXR) $(TXR_DBG_OPTS) $(TXR_OPTS) $< $(TXR_ARGS) > $(TST_OUT))
        $(call SH,                                                            \
          if ! diff -u $(TST_EXPECTED) $(TST_OUT) ; then                      \
            exit 1 ;                                                          \
          fi)
        $(call SH,touch $@)

.PHONY: tests.clean
tests.clean:
        rm -rf tst

.PHONY: retest
retest: tests.clean tests

define GREP_CHECK
        $(V)if [ $$(grep -E $(1) $(SRCS) | wc -l) -ne $(3) ] ; then \
              echo "New '$(2)' occurrences have been found:" ; \
              grep -n -E $(1) $(SRCS) \
                | sed -e 's/\(.*:.*:\).*/\1 $(2)/' \
                | grep $(4) ; \
              exit 1 ; \
            fi
endef

.PHONY: enforce
enforce:
ifneq ($(have_git),)
        $(call GREP_CHECK,'\<void[       ]*\*',void *,1,-v 'typedef void \*yyscan_t')
        $(call GREP_CHECK,'     ',tabs,0,'.')
        $(call GREP_CHECK,' $$',trailing spaces,0,'.')
else
        $(V)echo "enforce requires the git program and a git repository"
        $(V)exit 1
endif

#
# Installation macro.
#
# $1 - chmod perms
# $2 - source file(s)
# $3 - dest directory
#
define INSTALL
        $(call ABBREV3,INSTALL,$(3),$(2))
        $(call SH,mkdir -p $(3))
        $(call SH,cp -f $(2) $(3))
        $(call SH,                                \
          for x in $(2) ; do                      \
            y=$(strip $(3))/$$(basename $$x) ;    \
            touch -r $$x $$y ;                    \
            chmod $(1) $$y ;                      \
          done)
endef

PREINSTALL := :

.PHONY: install
install: $(PROG)
        $(V)$(PREINSTALL)
        $(call INSTALL,0755,txr$(EXE),$(DESTDIR)$(bindir))
        $(call INSTALL,0444,$(top_srcdir)LICENSE,$(DESTDIR)$(datadir))
        $(call INSTALL,0444,$(top_srcdir)METALICENSE,$(DESTDIR)$(datadir))
        $(call INSTALL,0444,$(top_srcdir)txr.1,$(DESTDIR)$(mandir)/man1)
        $(call INSTALL,0444,\
           $(addprefix $(top_srcdir)share/txr/stdlib/,\
                          *.txr *.tl *.tlo),\
           $(DESTDIR)$(datadir)/stdlib)

.PHONY: unixtar gnutar zip

unixtar gnutar zip: DESTDIR=pkg
zip: prefix=/txr
unixtar gnutar zip: PREINSTALL=rm -rf pkg

unixtar: install
        cd pkg; pwd; find . | pax -M uidgid -w -f ../txr-$(txr_ver)-bin.tar -x ustar ; ls ../*.tar
        pwd
        compress txr-$(txr_ver)-bin.tar

gnutar: install
        tar --owner=0 --group=0 -C pkg -czf txr-$(txr_ver)-bin.tar.gz .

zip: install
        cd pkg; zip -r ../txr-$(txr_ver)-bin.zip .

#
# Install the tests as well as the script to run them
#
install-tests:
        $(call ABBREV3,INSTALL,$(DESTDIR)$(datadir),tests)
        $(call SH,rm -rf tst)
        $(call SH,mkdir -p $(DESTDIR)$(datadir))
        $(call SH,(find tests | cpio -o 2> /dev/null) \
                      | (cd $(DESTDIR)$(datadir) ; cpio -idum 2> /dev/null))
        $(call SH,                                                     \
          (echo "#!/bin/sh" ;                                          \
           echo "set -ex" ;                                            \
           echo "cd $(datadir)" ;                                      \
           make -s -n tests VERBOSE=y TXR=$(bindir)/txr)               \
          > run.sh)
        $(call INSTALL,0755,run.sh,$(DESTDIR)$(datadir)/tests)

#
# Generate web page from man page
#
txr-manpage.html: txr.1 genman.txr
        man2html $< | $(TXR) genman.txr > $@

txr-manpage.pdf: txr.1 checkman.txr
        $(TXR) checkman.txr $<
        tbl $< | pdfroff -ww -man --no-toc - > $@

#
# Special targets used by ./configure
#

conftest: conftest.c
        $(call LINK_PROG,)

conftest2: conftest1.c conftest2.c
        $(call LINK_PROG,)

conftest.syms: conftest.o
        $(TXR_NM) -n -t o -P $^ > $@

.PHONY: conftest.yacc
conftest.yacc:
        $(V)echo $(TXR_YACC)

.PHONY: conftest.ccver
conftest.ccver:
        $(V)$(TXR_CC) --version

.PHONY: conftest.darwin
conftest.darwin:
        $(V)if echo | $(CC) -dM -E - | grep -s __APPLE__ >  /dev/null 2>&1 ; then \
          echo yes ; \
        fi

.PHONY: conftest.clean
conftest.clean:
        $(V)rm -f conftest$(EXE) conftest.[co] \
        conftest2$(EXE) conftest[12].[oc] \
        conftest.err conftest.syms