# This file is read by Makefile.SH to produce rules for $(LIBPERL) (and
# some additional rules as well).

# Rerun `sh Makefile.SH; make depend' after making any change.

# Additional rules supported: perl_, aout_test, aout_install, use them
# for a.out style perl (which may fork).

perl_fullversion="5.00${PERL_VERSION}_$PERL_SUBVERSION"
case "$archname" in
 *-thread*)	perl_fullversion="${perl_fullversion}-threaded";;
esac

dll_post="`echo $perl_fullversion | sum | sed -e 's/^0*//' | awk '{print $1}'`"
dll_post="`printf '%x' $dll_post | tr '[a-z]' '[A-Z]'`"

aout_extra_libs=''
aout_extra_sep=''
for xxx in $aout_extra_static_ext; do
  aout_extra_dir=`echo "$xxx" | sed -e 's/::/\//g'`
  aout_extra_lib="lib/auto/$aout_extra_dir/"`basename "$aout_extra_dir"`
  aout_extra_libs="$aout_extra_libs$aout_extra_sep$aout_extra_lib$aout_lib_ext"
  aout_extra_sep=' '
done

$spitshell >>Makefile <<!GROK!THIS!

PERL_FULLVERSION = $perl_fullversion

AOUT_OPTIMIZE	= \$(OPTIMIZE)
AOUT_CCCMD	= \$(CC) -DPERL_CORE $aout_ccflags \$(AOUT_OPTIMIZE)
AOUT_AR		= $aout_ar
AOUT_OBJ_EXT	= $aout_obj_ext
AOUT_LIB_EXT	= $aout_lib_ext
AOUT_LIBPERL	= libperl$aout_lib_ext
AOUT_CLDFLAGS	= $aout_ldflags

AOUT_LIBPERL_DLL	= libperl_dll$aout_lib_ext
AOUT_CCCMD_DLL	= \$(CC) -DDOSISH -DOS2=2 -DEMBED -I. -DPACK_MALLOC -DDEBUGGING_MSTATS -DTWO_POT_OPTIMIZE -DPERL_EMERGENCY_SBRK
AOUT_CLDFLAGS_DLL	= -Zexe -Zmt -Zcrtdll -Zstack 32000

# No -DPERL_CORE
SO_CCCMD	= \$(CC) $ccflags \$(OPTIMIZE)

LD_OPT		= \$(OPTIMIZE)
PERL_DLL_LD_OPT = -Zmap -Zlinker /map/li

PERL_DLL_BASE	= perl$dll_post
PERL_DLL	= \$(PERL_DLL_BASE)\$(DLSUFFIX)
TEST_PERL_DLL	= perl_dll_t
CONFIG_ARGS	= $config_args
AOUT_EXTRA_LIBS	= $aout_extra_libs

!GROK!THIS!

$spitshell >>Makefile <<'!NO!SUBS!'
PREPLIBRARY_LIBPERL = $(LIBPERL)
$(LIBPERL): perl.imp perl5.def libperl_override.lib
	emximp -o $(LIBPERL) perl.imp
	cp $(LIBPERL) perl.lib

imp_version: $(FIRSTMAKEFILE)
	echo $(PERL_DLL_BASE) > $@

libperl_override.imp: os2/os2add.sym miniperl imp_version
	./miniperl -wnle 'print "$$_\t$(PERL_DLL_BASE)\t$$_\t?"' os2/os2add.sym > $@
	echo	'strdup	$(PERL_DLL_BASE)	Perl_strdup	?' >> $@
	echo	'putenv	$(PERL_DLL_BASE)	Perl_putenv	?' >> $@

libperl_override.lib: libperl_override.imp
	emximp -o $@ libperl_override.imp

libperl_dllmain.imp: imp_version
	echo	'main	$(PERL_DLL_BASE)	dll_perlmain	?' > $@

libperl_dllmain.lib: libperl_dllmain.imp
	emximp -o $@ libperl_dllmain.imp

libperl_dllmain.a: libperl_dllmain.imp
	emximp -o $@ libperl_dllmain.imp

$(AOUT_LIBPERL_DLL): perl.imp $(PERL_DLL) perl5.def
	emximp -o $(AOUT_LIBPERL_DLL) perl.imp

perl.imp: perl5.def imp_version
	emximp -o perl.imp perl5.def
	echo	'emx_calloc		emxlibcm	400	?' >> $@
	echo	'emx_free		emxlibcm	401	?' >> $@
	echo	'emx_malloc		emxlibcm	402	?' >> $@
	echo	'emx_realloc		emxlibcm	403	?' >> $@

.PHONY: perl_dll installcmd aout_clean aout_install aout_install.perl \
	perlrexx test_prep_perl_ test_prep_perl_sys test_prep_perl_stat \
	test_prep_perl_stat_aout test_prep_various \
	stat_aout_harness aout_harness stat_harness sys_harness all_harness \
	stat_aout_test aout_test stat_test sys_test all_test \
	perl___harness test_harness_redir

perl_dll: $(PERL_DLL)

perl_dll_t: t/$(PERL_DLL)

t/$(PERL_DLL): $(PERL_DLL)
	$(LNS) $(PERL_DLL) t/$(PERL_DLL)

$(PERL_DLL): $(obj) perl5.def perl$(OBJ_EXT) perlmain$(OBJ_EXT) $(DYNALOADER)
	$(LD) $(LD_OPT) $(LDDLFLAGS) $(PERL_DLL_LD_OPT) -o $@ perl$(OBJ_EXT) $(obj) perlmain$(OBJ_EXT) $(DYNALOADER) $(libs) perl5.def || ( rm $(PERL_DLL) && sh -c false )

perl5.olddef: perl.linkexp
	echo "LIBRARY '$(PERL_DLL_BASE)' INITINSTANCE TERMINSTANCE"	> $@
	echo DESCRIPTION "'Perl interpreter v$(PERL_FULLVERSION), export autogenerated'"	>>$@
	echo STACKSIZE 32768				>>$@
	echo CODE LOADONCALL				>>$@
	echo DATA LOADONCALL NONSHARED MULTIPLE		>>$@
	echo EXPORTS					>>$@
!NO!SUBS!

if [ ! -z "$myttyname" ] ; then
  $spitshell >>Makefile <<'!NO!SUBS!'
	echo '  "ttyname"'				>>$@
!NO!SUBS!
fi

$spitshell >>Makefile <<'!NO!SUBS!'
	cat perl.linkexp	>>$@

#	grep -v '"\(malloc\|realloc\|free\)"' perl.linkexp	>>$@


perl.exports: perl.exp EXTERN.h perl.h
	(echo "#include \"EXTERN.h\" \n#include \"perl.h\" \n#include \"perl.exp\"";	\
	 echo "malloc\nrealloc\ncalloc\nfree") | \
		$(CC) -DEMBED  -E - | \
		awk '{if ($$2 == "") print $$1}' | sort | uniq > $@

perl.linkexp: perl.exports perl.map  os2/os2.sym
	cat perl.exports os2/os2.sym perl.map | sort | uniq -d | sed -e 's/\w\+/  "\0"/' > perl.linkexp

# We link miniperl statically, since .DLL depends on $(DYNALOADER) 

miniperl.map: miniperl

miniperl.exe: miniperl

miniperl: $(obj) perl$(OBJ_EXT) miniperlmain$(OBJ_EXT) opmini$(OBJ_EXT)
	$(CC) $(CLDFLAGS) -o miniperl miniperlmain$(OBJ_EXT) perl$(OBJ_EXT) `echo $(obj)|sed -e 's/\bop\./opmini./g'` $(libs) -Zmap -Zlinker /map/PM:VIO
	@./miniperl -w -Ilib -MExporter -e '<?>' || $(MAKE) minitest

depend: os2ish.h dlfcn.h os2thread.h os2.c

# Stupid make? Needed...
os2$(OBJ_EXT) : os2.c

os2.c: os2/os2.c os2ish.h
	cp -f $< $@

dl_os2.c: os2/dl_os2.c os2ish.h
	cp -f $< $@

os2ish.h: os2/os2ish.h
	cp -f $< $@

os2thread.h: os2/os2thread.h
	cp -f $< $@

dlfcn.h: os2/dlfcn.h
	cp -f $< $@

# Non-Forking dynamically loaded perl
# Make many: they are useful in low-memory conditions (floppy boot?  Lot of shared memory used?)

perl___$(EXE_EXT) perl___: $& libperl_dllmain$(LIB_EXT)
	$(SHRPENV) $(CC) $(CLDFLAGS) $(CCDLFLAGS) -o perl___ libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO
	$(SHRPENV) $(CC) $(CLDFLAGS) $(CCDLFLAGS) -Zstack 8192 -o perl___8 libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO
	$(SHRPENV) $(CC) $(CLDFLAGS) $(CCDLFLAGS) -Zstack 4096 -o perl___4 libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO
	$(SHRPENV) $(CC) $(CLDFLAGS) $(CCDLFLAGS) -Zstack 2048 -o perl___2 libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO
	$(SHRPENV) $(CC) $(CLDFLAGS) $(CCDLFLAGS) -Zstack 1024 -o perl___1 libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO
	$(SHRPENV) $(CC) $(CLDFLAGS) $(CCDLFLAGS) -Zstack 512 -o perl___05 libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO
	$(SHRPENV) $(CC) $(CLDFLAGS) $(CCDLFLAGS) -Zstack 320 -o perl___03 libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO

# This one is compiled -Zsys, so cannot do many things:

# Remove -Zcrtdll
STAT_CLDFLAGS = -Zexe -Zomf -Zmt -Zstack 32000

# Non-forking dynamically loaded perl with a wrong CRT library:

perl_stat perl_stat$(EXE_EXT): $& libperl_dllmain$(LIB_EXT)
	$(SHRPENV) $(CC) $(STAT_CLDFLAGS) $(CCDLFLAGS) -o perl_stat libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO

# Remove -Zcrtdll, add -Zsys
SYS_CLDFLAGS = $(STAT_CLDFLAGS) -Zsys

# Non-Forking dynamically loaded perl without EMX - so with wrong CRT library

perl_sys perl_sys$(EXE_EXT): $& libperl_dllmain$(LIB_EXT)
	$(SHRPENV) $(CC) $(SYS_CLDFLAGS) $(CCDLFLAGS) -o perl_sys libperl_dllmain$(LIB_EXT) -Zlinker /map/PM:VIO

installcmd : 
	@perl -e 'die qq{Give the option INSTALLCMDDIR=... to make!} if $$ARGV[0] eq ""' $(INSTALLCMDDIR)
	./miniperl -Ilib os2/perl2cmd.pl $(INSTALLCMDDIR)

# Aout section:

aout_obj = $(addsuffix $(AOUT_OBJ_EXT),$(basename $(obj)))
AOUT_DYNALOADER = $(addsuffix $(AOUT_LIB_EXT),$(basename $(DYNALOADER)))
aout_ext = $(static_ext) $(dynamic_ext) $(AOUT_EXTRA_LIBS)
aout_static_ext = $(addsuffix $(AOUT_LIB_EXT),$(basename $(aout_ext)))
aout_static_lib = $(addsuffix $(LIB_EXT),$(basename $(aout_ext)))

aout_static_ext_dll = $(addsuffix $(AOUT_LIB_EXT),$(basename $(static_ext)))
DYNALOADER_OBJ = ext/DynaLoader/DynaLoader$(OBJ_EXT)
aout_static_ext_dll = $(addsuffix $(AOUT_LIB_EXT),$(basename $(static_ext)))
AOUT_DYNALOADER_OBJ = $(addsuffix $(AOUT_OBJ_EXT),$(basename $(DYNALOADER_OBJ)))

$(AOUT_DYNALOADER_OBJ) : $(DYNALOADER_OBJ)
	emxaout -o $@ $<

$(DYNALOADER_OBJ) : $(DYNALOADER)
	@sh -c true

# Quick hack to construct directories necessary for /*/% stuff:

$(aout_static_ext) : $(static_ext) $(dynamic_ext)

$(AOUT_LIBPERL) : $(aout_obj) perl$(AOUT_OBJ_EXT)
	rm -f $@
	$(AOUT_AR) rcu $@ perl$(AOUT_OBJ_EXT) $(aout_obj)
	cp $@ perl$(AOUT_LIB_EXT)

.c$(AOUT_OBJ_EXT):
	$(AOUT_CCCMD) $(PLDLFLAGS) -c $*.c

opmini$(AOUT_OBJ_EXT): op.c
	$(AOUT_CCCMD) $(PLDLFLAGS) -DPERL_EXTERNAL_GLOB -o opmini$(AOUT_OBJ_EXT) -c op.c

perlmain(AOUT_OBJ_EXT): perlmain.c
	$(AOUT_CCCMD_DLL) $(PLDLFLAGS) -c perlmain.c

# Assume that extensions are at most 4 deep (this is so with 5.8.1)
aout_extlist: $(aout_static_ext) $(AOUT_DYNALOADER)
	echo lib/auto/*.a lib/auto/*/*.a lib/auto/*/*/*.a lib/auto/*/*/*/*.a | tr ' ' '\n' | grep -v '\*' > $@

aout_perlmain.c: miniperlmain.c config.sh makefile $(static_ext_autoinit) $(aout_static_ext) writemain aout_extlist
	sh writemain `cat aout_extlist` > aout_perlmain.c

_preplibrary = miniperl lib/Config.pm lib/lib.pm lib/re.pm

miniperl_: $& miniperlmain$(AOUT_OBJ_EXT) $(AOUT_LIBPERL) opmini$(AOUT_OBJ_EXT) $(_preplibrary)
	$(CC) $(AOUT_CLDFLAGS) $(CCDLFLAGS) -o miniperl_ miniperlmain$(AOUT_OBJ_EXT) opmini$(AOUT_OBJ_EXT) $(AOUT_LIBPERL) $(libs)

# Forking statically loaded perl

# Need a miniperl_ dependency, since $(AOUT_DYNALOADER) is build via implicit
# rules, thus would not rebuild miniperl_ via an explicit rule

perl_$(EXE_EXT) perl_: $& miniperl_ aout_perlmain$(AOUT_OBJ_EXT) $(AOUT_LIBPERL) $(AOUT_DYNALOADER) $(aout_static_ext) ext.libs aout_extlist
	$(CC) $(AOUT_CLDFLAGS) $(CCDLFLAGS) $(OPTIMIZE) -o perl_ aout_perlmain$(AOUT_OBJ_EXT) `cat aout_extlist` $(AOUT_LIBPERL) `cat ext.libs` $(libs)

# Remove -Zcrtdll
STAT_AOUT_CLDFLAGS = -Zexe -Zmt -Zstack 32000

# Forking dynamically loaded perl with a wrong CRT library:

perl_stat_aout$(EXE_EXT) perl_stat_aout: $& libperl_dllmain$(AOUT_LIB_EXT)
	$(SHRPENV) $(CC) $(STAT_AOUT_CLDFLAGS) $(CCDLFLAGS) $(OPTIMIZE) -o perl_stat_aout libperl_dllmain$(AOUT_LIB_EXT)

PERLREXX_DLL = perlrexx.dll

perl perl$(EXE_EXT) : perl__ perl___ $(PERLREXX_DLL) $(PERL_DLL)

# Dynamically loaded PM-application perl:

perl__$(EXE_EXT) perl__: $& libperl_dllmain$(LIB_EXT)
	$(CC) $(CLDFLAGS) $(CCDLFLAGS) -o perl__ libperl_dllmain$(LIB_EXT) -Zlinker /PM:PM

# Forking dynamically loaded perl:

perl$(EXE_EXT) perl: $& libperl_dllmain$(AOUT_LIB_EXT)
	$(CC) $(AOUT_CLDFLAGS_DLL) $(CCDLFLAGS) -o perl libperl_dllmain$(AOUT_LIB_EXT)

clean: aout_clean

aout_clean:
	-rm *perl_.* *.o *.a lib/auto/*/*.a lib/auto/*/*/*.a lib/auto/*/*/*/*.a ext/*/Makefile.aout ext/*/*/Makefile.aout  ext/*/*/*/Makefile.aout

aout_install: perl_ aout_install.perl

aout_install.perl: perl_ installperl
	./perl_ installperl --destdir="$(DESTDIR)"

perlrexx: $(PERLREXX_DLL)
	@sh -c true

perlrexx.c: os2/perlrexx.c
	@cp -f os2/$@ $@

# Remove -Zexe, add -Zdll -Zso.  No stack needed
SO_CLDFLAGS = -Zdll -Zso -Zomf -Zmt -Zsys

# A callable-from-REXX DLL

$(PERLREXX_DLL): perlrexx$(OBJ_EXT) perlrexx.def
	$(SHRPENV) $(CC) $(SO_CLDFLAGS) $(CCDLFLAGS) -o $@ perlrexx$(OBJ_EXT) $(DYNALOADER) $(static_ext) $(LIBPERL) `cat ext.libs` $(libs) perlrexx.def

perlrexx.def: miniperl $(_preplibrary)
	echo	"LIBRARY 'perlrexx' INITINSTANCE TERMINSTANCE"	> $@
	echo	"DESCRIPTION '@#perl5-porters@perl.org:`miniperl -Ilib -MConfig -e 'print \$$]'`#@ REXX to Perl `miniperl -Ilib -MConfig -e 'print \$$Config{version}'` interface'" >> $@
	echo	"EXPORTS"					>> $@
	echo	'  "PERL"'					>> $@
	echo	'  "PERLTERM"'					>> $@
	echo	'  "PERLINIT"'					>> $@
	echo	'  "PERLEXIT"'					>> $@
	echo	'  "PERLEVAL"'					>> $@
	echo	'  "PERLLASTERROR"'				>> $@
	echo	'  "PERLEVALSUBCOMMAND"'			>> $@
	echo	'  "PERLEXPORTALL"'				>> $@
	echo	'  "PERLDROPALL"'				>> $@
	echo	'  "PERLDROPALLEXIT"'				>> $@


perlrexx$(OBJ_EXT): perlrexx.c
	$(SO_CCCMD) $(PLDLFLAGS) -c perlrexx.c

# To test with harness, one needed to HARNESS_IGNORE_EXITCODE=2

# Define to be empty to get a TTY test
REDIR_TEST = 2>&1 | tee 00_$@

test_prep_perl_: test_prep_pre miniperl_ ./perl_$(EXE_EXT)
	PERL=./perl_ $(MAKE) _test_prep

test_prep_various: test_prep_pre miniperl $(dynamic_ext) $(TEST_PERL_DLL)

test_prep_perl_sys: test_prep_various ./perl_sys$(EXE_EXT)
	PERL=./perl_sys $(MAKE) _test_prep

test_prep_perl___: test_prep_various ./perl___$(EXE_EXT)
	PERL=./perl___ $(MAKE) _test_prep

test_prep_perl_stat: test_prep_various ./perl_stat$(EXE_EXT)
	PERL=./perl_stat $(MAKE) _test_prep

test_prep_perl_stat_aout: test_prep_various ./perl_stat_aout$(EXE_EXT)
	PERL=./perl_stat_aout $(MAKE) _test_prep

aout_test: test_prep_perl_
	PERL=./perl_ $(MAKE) _test

aout_harness: test_prep_perl_
	-PERL=./perl_ $(MAKE) TESTFILE=harness _test $(REDIR_TEST)

sys_test: test_prep_perl_sys
	PERL=./perl_sys $(MAKE) _test

sys_harness: test_prep_perl_sys
	-PERL=./perl_sys $(MAKE) TESTFILE=harness _test $(REDIR_TEST)

stat_test: test_prep_perl_stat
	PERL=./perl_stat $(MAKE) _test

stat_harness: test_prep_perl_stat
	-PERL=./perl_stat $(MAKE) TESTFILE=harness _test $(REDIR_TEST)

stat_aout_test: test_prep_perl_stat_aout
	PERL=./perl_stat_aout $(MAKE) _test

stat_aout_harness: test_prep_perl_stat_aout
	-PERL=./perl_stat_aout $(MAKE) TESTFILE=harness _test $(REDIR_TEST)

perl___test: test_prep_perl___
	PERL=./perl___ $(MAKE) _test

perl___harness: test_prep_perl___
	-PERL=./perl___ $(MAKE) TESTFILE=harness _test $(REDIR_TEST)

all_test: test aout_test perl___test sys_test stat_test stat_aout_test

test_harness_redir: test_prep
	-PERL=./perl $(MAKE) TESTFILE=harness _test $(REDIR_TEST)

all_harness: test_harness_redir aout_harness perl___harness sys_harness stat_harness stat_aout_harness

!NO!SUBS!

# Now we need to find directories in ./ext/ which are up to 3 level deep
# Currently (2001/06) there is no directories 4 levels deep.
# (Only directories so that there is no Makefile.PL some levels up matter.)

dirs=''
ddirs=''
preci='ext/%/Makefile.aout '
for d in ext/*
do
	# echo "...Checking '$d'..."
	# skip the kid if the parent exists: cmp SDBFile/sdbm, done by MakeMaker
	if test ! -e "$d/Makefile.PL"; then
	    # Need to treat subdirectories manually
	    # echo "...Checking subdirs of '$d'..."
	    d_treated=''
	    for dd in $d/*
	    do
		if test ! -d $dd; then
		    continue
		fi
		if test -e "$dd/Makefile.PL"; then
		    if test "X$d_treated" = "X"; then
			d_treated=1
			# echo "...Found parentless 2-level deep Makefile.PL's in $d/*/:" $d/*/Makefile.PL
			dirs="$dirs $d"
			preci="$preci $d/%/Makefile.aout"
		    fi
		else
		    # Need to treat subsubdirectories manually
		    dd_treated=''
		    for ddd in $dd/*		# ext/*/*/*/Makefile.PL
		    do
			if test ! -d $ddd; then
			    continue
			fi
			if test -e "$ddd/Makefile.PL"; then
			    if test "X$dd_treated" = "X"; then
				dd_treated=1
				# echo "...Found parentless 3-level deep Makefile.PL's in $dd/*/:" $dd/*/Makefile.PL
				ddirs="$ddirs $dd"
				preci="$preci $dd/%/Makefile.aout"
			    fi
			fi
		    done
		fi
	   done
	fi
done

# ext/threads is marked as NORECURS, so we need to specialcase it
if echo "$static_ext $dynamic_ext" | grep -q threads/shared ; then
   preci="$preci ext/threads/%/Makefile.aout"
   dirs="$dirs ext/threads"
fi

$spitshell >>Makefile <<!GROK!THIS!
.PRECIOUS : $preci

# Set this to FORCE to force a rebuilt of aout extensions

AOUT_EXTENSIONS_FORCE = 

!GROK!THIS!

for d in $ddirs
do
    # Remove the leading component ext/
    dd=`dirname $d`
    pp=`basename $dd`
    p=$pp/`basename $d`
    $spitshell >>Makefile <<!GROK!THIS!
lib/auto/$p/*/%.a : $d/%/Makefile.aout
	@cd $d/\$(basename \$(notdir \$@)) ; make -f Makefile.aout config || echo "\$(MAKE) config failed, continuing anyway..."
	cd $d/\$(basename \$(notdir \$@)) ; make -f Makefile.aout LINKTYPE=static CCCDLFLAGS=

$d/%/Makefile.aout : miniperl_ \$(_preplibrary) \$(AOUT_EXTENSIONS_FORCE)
	cd \$(dir \$@) ; ../../../../miniperl_ -I ../../../../lib Makefile.PL FIRST_MAKEFILE=Makefile.aout INSTALLDIRS=perl PERL_CORE=1

!GROK!THIS!

done

for d in $dirs
do
    p=`basename $d`
    $spitshell >>Makefile <<!GROK!THIS!
lib/auto/$p/*/%.a : $d/%/Makefile.aout
	@cd $d/\$(basename \$(notdir \$@)) ; make -f Makefile.aout config || echo "\$(MAKE) config failed, continuing anyway..."
	cd $d/\$(basename \$(notdir \$@)) ; make -f Makefile.aout LINKTYPE=static CCCDLFLAGS=

$d/%/Makefile.aout : miniperl_ \$(_preplibrary) \$(AOUT_EXTENSIONS_FORCE)
	cd \$(dir \$@) ; ../../../miniperl_ -I ../../../lib Makefile.PL FIRST_MAKEFILE=Makefile.aout INSTALLDIRS=perl PERL_CORE=1

!GROK!THIS!

done

# We need to special-case OS2/DLL/DLL.a, since the recipe above will
# try to find it in ext/OS2-DLL

$spitshell >>Makefile <<'!NO!SUBS!'
lib/auto/OS2/DLL/DLL.a : lib/auto/OS2/REXX/REXX.a
	@sh -c true

lib/auto/*/%.a : ext/%/Makefile.aout
	@cd ext/$(basename $(notdir $@)) ; make -f Makefile.aout config || echo "\$(MAKE) config failed, continuing anyway..."
	cd ext/$(basename $(notdir $@)) ; make -f Makefile.aout LINKTYPE=static CCCDLFLAGS=

ext/%/Makefile.aout : miniperl_ $(_preplibrary) $(AOUT_EXTENSIONS_FORCE)
	cd $(dir $@) ; ../../miniperl_ -I ../../lib Makefile.PL FIRST_MAKEFILE=Makefile.aout INSTALLDIRS=perl PERL_CORE=1

!NO!SUBS!