Initial revision

3 files changed, 988 insertions, 0 deletions

diff --git a/gc/Makefile b/gc/Makefile
new file mode 100644
index 0000000..cfbfc45
--- /dev/null
+++ b/gc/Makefile
@@ -0,0 +1,445 @@
+# Primary targets:
+# gc.a - builds basic library
+# libgc.a - builds library for use with g++ "-fgc-keyword" extension
+# c++ - adds C++ interface to library
+# cords - adds cords (heavyweight strings) to library
+# test - prints porting information, then builds basic version of gc.a,
+#      	 and runs some tests of collector and cords.  Does not add cords or
+#	 c++ interface to gc.a
+# cord/de - builds dumb editor based on cords.
+ABI_FLAG=
+CC=cc $(ABI_FLAG)
+CXX=CC $(ABI_FLAG)
+AS=as $(ABI_FLAG)
+#  The above doesn't work with gas, which doesn't run cpp.
+#  Define AS as `gcc -c -x assembler-with-cpp' instead.
+#  Under Irix 6, you will have to specify the ABI (-o32, -n32, or -64)
+#  if you use something other than the default ABI on your machine.
+
+CFLAGS= -O -DATOMIC_UNCOLLECTABLE -DNO_SIGNALS -DNO_EXECUTE_PERMISSION -DALL_INTERIOR_POINTERS -DSILENT
+
+# For dynamic library builds, it may be necessary to add flags to generate
+# PIC code, e.g. -fPIC on Linux.
+
+# Setjmp_test may yield overly optimistic results when compiled
+# without optimization.
+# -DSILENT disables statistics printing, and improves performance.
+# -DFIND_LEAK causes GC_find_leak to be initially set.
+#   This causes the collector to assume that all inaccessible
+#   objects should have been explicitly deallocated, and reports exceptions.
+#   Finalization and the test program are not usable in this mode.
+# -DSOLARIS_THREADS enables support for Solaris (thr_) threads.
+#   (Clients should also define SOLARIS_THREADS and then include
+#   gc.h before performing thr_ or dl* or GC_ operations.)
+#   Must also define -D_REENTRANT.
+# -D_SOLARIS_PTHREADS enables support for Solaris pthreads.
+#   Define SOLARIS_THREADS as well.
+# -DIRIX_THREADS enables support for Irix pthreads.  See README.irix.
+# -DLINUX_THREADS enables support for Xavier Leroy's Linux threads.
+#   see README.linux.  -D_REENTRANT may also be required.
+# -DALL_INTERIOR_POINTERS allows all pointers to the interior
+#   of objects to be recognized.  (See gc_priv.h for consequences.)
+# -DSMALL_CONFIG tries to tune the collector for small heap sizes,
+#   usually causing it to use less space in such situations.
+#   Incremental collection no longer works in this case.
+# -DLARGE_CONFIG tunes the collector for unusually large heaps.
+#   Necessary for heaps larger than about 500 MB on most machines.
+#   Recommended for heaps larger than about 64 MB.
+# -DDONT_ADD_BYTE_AT_END is meaningful only with
+#   -DALL_INTERIOR_POINTERS.  Normally -DALL_INTERIOR_POINTERS
+#   causes all objects to be padded so that pointers just past the end of
+#   an object can be recognized.  This can be expensive.  (The padding
+#   is normally more than one byte due to alignment constraints.)
+#   -DDONT_ADD_BYTE_AT_END disables the padding.
+# -DNO_SIGNALS does not disable signals during critical parts of
+#   the GC process.  This is no less correct than many malloc 
+#   implementations, and it sometimes has a significant performance
+#   impact.  However, it is dangerous for many not-quite-ANSI C
+#   programs that call things like printf in asynchronous signal handlers.
+# -DNO_EXECUTE_PERMISSION may cause some or all of the heap to not
+#   have execute permission, i.e. it may be impossible to execute
+#   code from the heap.  Currently this only affects the incremental
+#   collector on UNIX machines.  It may greatly improve its performance,
+#   since this may avoid some expensive cache synchronization.
+# -DOPERATOR_NEW_ARRAY declares that the C++ compiler supports the
+#   new syntax "operator new[]" for allocating and deleting arrays.
+#   See gc_cpp.h for details.  No effect on the C part of the collector.
+#   This is defined implicitly in a few environments.
+# -DREDIRECT_MALLOC=X causes malloc, realloc, and free to be defined
+#   as aliases for X, GC_realloc, and GC_free, respectively.
+#   Calloc is redefined in terms of the new malloc.  X should
+#   be either GC_malloc or GC_malloc_uncollectable.
+#   The former is occasionally useful for working around leaks in code
+#   you don't want to (or can't) look at.  It may not work for
+#   existing code, but it often does.  Neither works on all platforms,
+#   since some ports use malloc or calloc to obtain system memory.
+#   (Probably works for UNIX, and win32.)
+# -DIGNORE_FREE turns calls to free into a noop.  Only useful with
+#   -DREDIRECT_MALLOC.
+# -DNO_DEBUGGING removes GC_dump and the debugging routines it calls.
+#   Reduces code size slightly at the expense of debuggability.
+# -DJAVA_FINALIZATION makes it somewhat safer to finalize objects out of
+#   order by specifying a nonstandard finalization mark procedure  (see
+#   finalize.c).  Objects reachable from finalizable objects will be marked
+#   in a sepearte postpass, and hence their memory won't be reclaimed.
+#   Not recommended unless you are implementing a language that specifies
+#   these semantics.  Since 5.0, determines only only the initial value
+#   of GC_java_finalization variable.
+# -DFINALIZE_ON_DEMAND causes finalizers to be run only in response
+#   to explicit GC_invoke_finalizers() calls.
+#   In 5.0 this became runtime adjustable, and this only determines the
+#   initial value of GC_finalize_on_demand.
+# -DATOMIC_UNCOLLECTABLE includes code for GC_malloc_atomic_uncollectable.
+#   This is useful if either the vendor malloc implementation is poor,
+#   or if REDIRECT_MALLOC is used.
+# -DHBLKSIZE=ddd, where ddd is a power of 2 between 512 and 16384, explicitly
+#   sets the heap block size.  Each heap block is devoted to a single size and
+#   kind of object.  For the incremental collector it makes sense to match
+#   the most likely page size.  Otherwise large values result in more
+#   fragmentation, but generally better performance for large heaps.
+# -DUSE_MMAP use MMAP instead of sbrk to get new memory.
+#   Works for Solaris and Irix.
+# -DUSE_MUNMAP causes memory to be returned to the OS under the right
+#   circumstances.  This currently disables VM-based incremental collection.
+#   This is currently experimental, and works only under some Unix and
+#   Linux versions.
+# -DMMAP_STACKS (for Solaris threads) Use mmap from /dev/zero rather than
+#   GC_scratch_alloc() to get stack memory.
+# -DPRINT_BLACK_LIST Whenever a black list entry is added, i.e. whenever
+#   the garbage collector detects a value that looks almost, but not quite,
+#   like a pointer, print both the address containing the value, and the
+#   value of the near-bogus-pointer.  Can be used to identifiy regions of
+#   memory that are likely to contribute misidentified pointers.
+# -DOLD_BLOCK_ALLOC Use the old, possibly faster, large block
+#   allocation strategy.  The new strategy tries harder to minimize
+#   fragmentation, sometimes at the expense of spending more time in the
+#   large block allocator and/or collecting more frequently.
+#   If you expect the allocator to promptly use an explicitly expanded
+#   heap, this is highly recommended.
+# -DKEEP_BACK_PTRS Add code to save back pointers in debugging headers
+#   for objects allocated with the debugging allocator.  If all objects
+#   through GC_MALLOC with GC_DEBUG defined, this allows the client
+#   to determine how particular or randomly chosen objects are reachable
+#   for debugging/profiling purposes.  The backptr.h interface is
+#   implemented only if this is defined.
+# -DGC_ASSERTIONS Enable some internal GC assertion checking.  Currently
+#   this facility is only used in a few places.  It is intended primarily
+#   for debugging of the garbage collector itself, but could also
+#   occasionally be useful for debugging of client code.  Slows down the
+#   collector somewhat, but not drastically.
+# -DCHECKSUMS reports on erroneously clear dirty bits, and unexpectedly
+#   altered stubborn objects, at substantial performance cost.
+#   Use only for debugging of the incremental collector.
+#
+
+
+LIBGC_CFLAGS= -O -DNO_SIGNALS -DSILENT \
+    -DREDIRECT_MALLOC=GC_malloc_uncollectable \
+    -DDONT_ADD_BYTE_AT_END -DALL_INTERIOR_POINTERS
+#   Flags for building libgc.a -- the last two are required.
+
+CXXFLAGS= $(CFLAGS) 
+AR= ar
+RANLIB= ranlib
+
+
+# Redefining srcdir allows object code for the nonPCR version of the collector
+# to be generated in different directories.  In this case, the destination directory
+# should contain a copy of the original include directory.
+srcdir = .
+VPATH = $(srcdir)
+
+OBJS= alloc.o reclaim.o allchblk.o misc.o mach_dep.o os_dep.o mark_rts.o headers.o mark.o obj_map.o blacklst.o finalize.o new_hblk.o dbg_mlc.o malloc.o stubborn.o checksums.o solaris_threads.o irix_threads.o linux_threads.o typd_mlc.o ptr_chck.o mallocx.o solaris_pthreads.o
+
+CSRCS= reclaim.c allchblk.c misc.c alloc.c mach_dep.c os_dep.c mark_rts.c headers.c mark.c obj_map.c pcr_interface.c blacklst.c finalize.c new_hblk.c real_malloc.c dyn_load.c dbg_mlc.c malloc.c stubborn.c checksums.c solaris_threads.c irix_threads.c linux_threads.c typd_mlc.c ptr_chck.c mallocx.c solaris_pthreads.c
+
+CORD_SRCS=  cord/cordbscs.c cord/cordxtra.c cord/cordprnt.c cord/de.c cord/cordtest.c cord/cord.h cord/ec.h cord/private/cord_pos.h cord/de_win.c cord/de_win.h cord/de_cmds.h cord/de_win.ICO cord/de_win.RC cord/SCOPTIONS.amiga cord/SMakefile.amiga
+
+CORD_OBJS=  cord/cordbscs.o cord/cordxtra.o cord/cordprnt.o
+
+SRCS= $(CSRCS) mips_sgi_mach_dep.s rs6000_mach_dep.s alpha_mach_dep.s \
+    sparc_mach_dep.s gc.h gc_typed.h gc_hdrs.h gc_priv.h gc_private.h \
+    gcconfig.h gc_mark.h include/gc_inl.h include/gc_inline.h gc.man \
+    threadlibs.c if_mach.c if_not_there.c gc_cpp.cc gc_cpp.h weakpointer.h \
+    gcc_support.c mips_ultrix_mach_dep.s include/gc_alloc.h gc_alloc.h \
+    include/new_gc_alloc.h include/javaxfc.h sparc_sunos4_mach_dep.s \
+    solaris_threads.h backptr.h $(CORD_SRCS)
+
+OTHER_FILES= Makefile PCR-Makefile OS2_MAKEFILE NT_MAKEFILE BCC_MAKEFILE \
+           README test.c test_cpp.cc setjmp_t.c SMakefile.amiga \
+           SCoptions.amiga README.amiga README.win32 cord/README \
+           cord/gc.h include/gc.h include/gc_typed.h include/cord.h \
+           include/ec.h include/private/cord_pos.h include/private/gcconfig.h \
+           include/private/gc_hdrs.h include/private/gc_priv.h \
+	   include/gc_cpp.h README.rs6000 include/backptr.h \
+           include/weakpointer.h README.QUICK callprocs pc_excludes \
+           barrett_diagram README.OS2 README.Mac MacProjects.sit.hqx \
+           MacOS.c EMX_MAKEFILE makefile.depend README.debugging \
+           include/gc_cpp.h Mac_files/datastart.c Mac_files/dataend.c \
+           Mac_files/MacOS_config.h Mac_files/MacOS_Test_config.h \
+           add_gc_prefix.c README.solaris2 README.sgi README.hp README.uts \
+	   win32_threads.c NT_THREADS_MAKEFILE gc.mak README.dj Makefile.dj \
+	   README.alpha README.linux version.h Makefile.DLLs \
+	   WCC_MAKEFILE nursery.c nursery.h gc_copy_descr.h \
+	   include/leak_detector.h
+
+CORD_INCLUDE_FILES= $(srcdir)/gc.h $(srcdir)/cord/cord.h $(srcdir)/cord/ec.h \
+           $(srcdir)/cord/private/cord_pos.h
+
+UTILS= if_mach if_not_there threadlibs
+
+# Libraries needed for curses applications.  Only needed for de.
+CURSES= -lcurses -ltermlib
+
+# The following is irrelevant on most systems.  But a few
+# versions of make otherwise fork the shell specified in
+# the SHELL environment variable.
+SHELL= /bin/sh
+
+SPECIALCFLAGS = 
+# Alternative flags to the C compiler for mach_dep.c.
+# Mach_dep.c often doesn't like optimization, and it's
+# not time-critical anyway.
+# Set SPECIALCFLAGS to -q nodirect_code on Encore.
+
+all: gc.a gctest
+
+pcr: PCR-Makefile gc_private.h gc_hdrs.h gc.h gcconfig.h mach_dep.o $(SRCS)
+	make -f PCR-Makefile depend
+	make -f PCR-Makefile
+
+$(OBJS) test.o dyn_load.o dyn_load_sunos53.o: $(srcdir)/gc_priv.h $(srcdir)/gc_hdrs.h $(srcdir)/gc.h \
+    $(srcdir)/gcconfig.h $(srcdir)/gc_typed.h Makefile
+# The dependency on Makefile is needed.  Changing
+# options such as -DSILENT affects the size of GC_arrays,
+# invalidating all .o files that rely on gc_priv.h
+
+mark.o typd_mlc.o finalize.o: $(srcdir)/gc_mark.h
+
+base_lib gc.a: $(OBJS) dyn_load.o $(UTILS)
+	echo > base_lib
+	rm -f dont_ar_1
+	./if_mach SPARC SUNOS5 touch dont_ar_1
+	./if_mach SPARC SUNOS5 $(AR) rus gc.a $(OBJS) dyn_load.o
+	./if_mach M68K AMIGA touch dont_ar_1
+	./if_mach M68K AMIGA $(AR) -vrus gc.a $(OBJS) dyn_load.o
+	./if_not_there dont_ar_1 $(AR) ru gc.a $(OBJS) dyn_load.o
+	./if_not_there dont_ar_1 $(RANLIB) gc.a || cat /dev/null
+#	ignore ranlib failure; that usually means it doesn't exist, and isn't needed
+
+cords: $(CORD_OBJS) cord/cordtest $(UTILS)
+	rm -f dont_ar_3
+	./if_mach SPARC SUNOS5 touch dont_ar_3
+	./if_mach SPARC SUNOS5 $(AR) rus gc.a $(CORD_OBJS)
+	./if_mach M68K AMIGA touch dont_ar_3
+	./if_mach M68K AMIGA $(AR) -vrus gc.a $(CORD_OBJS)
+	./if_not_there dont_ar_3 $(AR) ru gc.a $(CORD_OBJS)
+	./if_not_there dont_ar_3 $(RANLIB) gc.a || cat /dev/null
+
+gc_cpp.o: $(srcdir)/gc_cpp.cc $(srcdir)/gc_cpp.h $(srcdir)/gc.h Makefile
+	$(CXX) -c $(CXXFLAGS) $(srcdir)/gc_cpp.cc
+
+test_cpp: $(srcdir)/test_cpp.cc $(srcdir)/gc_cpp.h gc_cpp.o $(srcdir)/gc.h \
+base_lib $(UTILS)
+	rm -f test_cpp
+	./if_mach HP_PA "" $(CXX) $(CXXFLAGS) -o test_cpp $(srcdir)/test_cpp.cc gc_cpp.o gc.a -ldld
+	./if_not_there test_cpp $(CXX) $(CXXFLAGS) -o test_cpp $(srcdir)/test_cpp.cc gc_cpp.o gc.a `./threadlibs`
+
+c++: gc_cpp.o $(srcdir)/gc_cpp.h test_cpp
+	rm -f dont_ar_4
+	./if_mach SPARC SUNOS5 touch dont_ar_4
+	./if_mach SPARC SUNOS5 $(AR) rus gc.a gc_cpp.o
+	./if_mach M68K AMIGA touch dont_ar_4
+	./if_mach M68K AMIGA $(AR) -vrus gc.a gc_cpp.o
+	./if_not_there dont_ar_4 $(AR) ru gc.a gc_cpp.o
+	./if_not_there dont_ar_4 $(RANLIB) gc.a || cat /dev/null
+	./test_cpp 1
+	echo > c++
+
+dyn_load_sunos53.o: dyn_load.c
+	$(CC) $(CFLAGS) -DSUNOS53_SHARED_LIB -c $(srcdir)/dyn_load.c -o $@
+
+# SunOS5 shared library version of the collector
+sunos5gc.so: $(OBJS) dyn_load_sunos53.o
+	$(CC) -G -o sunos5gc.so $(OBJS) dyn_load_sunos53.o -ldl
+	ln sunos5gc.so libgc.so
+
+# Alpha/OSF shared library version of the collector
+libalphagc.so: $(OBJS)
+	ld -shared -o libalphagc.so $(OBJS) dyn_load.o -lc
+	ln libalphagc.so libgc.so
+
+# IRIX shared library version of the collector
+libirixgc.so: $(OBJS) dyn_load.o
+	ld -shared $(ABI_FLAG) -o libirixgc.so $(OBJS) dyn_load.o -lc
+	ln libirixgc.so libgc.so
+
+# Linux shared library version of the collector
+liblinuxgc.so: $(OBJS) dyn_load.o
+	gcc -shared -o liblinuxgc.so $(OBJS) dyn_load.o -lo
+	ln liblinuxgc.so libgc.so
+
+# Alternative Linux rule.  This is preferable, but is likely to break the
+# Makefile for some non-linux platforms.
+# LIBOBJS= $(patsubst %.o, %.lo, $(OBJS))
+#
+#.SUFFIXES: .lo $(SUFFIXES)
+#
+#.c.lo:
+#	$(CC) $(CFLAGS) $(CPPFLAGS) -fPIC -c $< -o $@
+#
+# liblinuxgc.so: $(LIBOBJS) dyn_load.lo
+# 	gcc -shared -Wl,-soname=libgc.so.0 -o libgc.so.0 $(LIBOBJS) dyn_load.lo
+#	touch liblinuxgc.so
+
+mach_dep.o: $(srcdir)/mach_dep.c $(srcdir)/mips_sgi_mach_dep.s $(srcdir)/mips_ultrix_mach_dep.s $(srcdir)/rs6000_mach_dep.s $(UTILS)
+	rm -f mach_dep.o
+	./if_mach MIPS IRIX5 $(AS) -o mach_dep.o $(srcdir)/mips_sgi_mach_dep.s
+	./if_mach MIPS RISCOS $(AS) -o mach_dep.o $(srcdir)/mips_ultrix_mach_dep.s
+	./if_mach MIPS ULTRIX $(AS) -o mach_dep.o $(srcdir)/mips_ultrix_mach_dep.s
+	./if_mach RS6000 "" $(AS) -o mach_dep.o $(srcdir)/rs6000_mach_dep.s
+	./if_mach ALPHA "" $(AS) -o mach_dep.o $(srcdir)/alpha_mach_dep.s
+	./if_mach SPARC SUNOS5 $(AS) -o mach_dep.o $(srcdir)/sparc_mach_dep.s
+	./if_mach SPARC SUNOS4 $(AS) -o mach_dep.o $(srcdir)/sparc_sunos4_mach_dep.s
+	./if_mach SPARC OPENBSD $(AS) -o mach_dep.o $(srcdir)/sparc_sunos4_mach_dep.s
+	./if_not_there mach_dep.o $(CC) -c $(SPECIALCFLAGS) $(srcdir)/mach_dep.c
+
+mark_rts.o: $(srcdir)/mark_rts.c if_mach if_not_there $(UTILS)
+	rm -f mark_rts.o
+	-./if_mach ALPHA OSF1 $(CC) -c $(CFLAGS) -Wo,-notail $(srcdir)/mark_rts.c
+	./if_not_there mark_rts.o $(CC) -c $(CFLAGS) $(srcdir)/mark_rts.c
+#	Work-around for DEC optimizer tail recursion elimination bug.
+#  The ALPHA-specific line should be removed if gcc is used.
+
+alloc.o: version.h
+
+cord/cordbscs.o: $(srcdir)/cord/cordbscs.c $(CORD_INCLUDE_FILES)
+	$(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordbscs.c
+	mv cordbscs.o cord/cordbscs.o
+#  not all compilers understand -o filename
+
+cord/cordxtra.o: $(srcdir)/cord/cordxtra.c $(CORD_INCLUDE_FILES)
+	$(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordxtra.c
+	mv cordxtra.o cord/cordxtra.o
+
+cord/cordprnt.o: $(srcdir)/cord/cordprnt.c $(CORD_INCLUDE_FILES)
+	$(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordprnt.c
+	mv cordprnt.o cord/cordprnt.o
+
+cord/cordtest: $(srcdir)/cord/cordtest.c $(CORD_OBJS) gc.a $(UTILS)
+	rm -f cord/cordtest
+	./if_mach SPARC DRSNX $(CC) $(CFLAGS) -o cord/cordtest $(srcdir)/cord/cordtest.c $(CORD_OBJS) gc.a -lucb
+	./if_mach HP_PA "" $(CC) $(CFLAGS) -o cord/cordtest $(srcdir)/cord/cordtest.c $(CORD_OBJS) gc.a -ldld
+	./if_not_there cord/cordtest $(CC) $(CFLAGS) -o cord/cordtest $(srcdir)/cord/cordtest.c $(CORD_OBJS) gc.a `./threadlibs`
+
+cord/de: $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a $(UTILS)
+	rm -f cord/de
+	./if_mach SPARC DRSNX $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a $(CURSES) -lucb `./threadlibs`
+	./if_mach HP_PA "" $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a $(CURSES) -ldld
+	./if_mach RS6000 "" $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a -lcurses
+	./if_mach I386 LINUX $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a -lcurses `./threadlibs`
+	./if_mach ALPHA LINUX $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a -lcurses
+	./if_mach M68K AMIGA $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a -lcurses
+	./if_not_there cord/de $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a $(CURSES) `./threadlibs`
+
+if_mach: $(srcdir)/if_mach.c $(srcdir)/gcconfig.h
+	$(CC) $(CFLAGS) -o if_mach $(srcdir)/if_mach.c
+
+threadlibs: $(srcdir)/threadlibs.c $(srcdir)/gcconfig.h Makefile
+	$(CC) $(CFLAGS) -o threadlibs $(srcdir)/threadlibs.c
+
+if_not_there: $(srcdir)/if_not_there.c
+	$(CC) $(CFLAGS) -o if_not_there $(srcdir)/if_not_there.c
+
+clean: 
+	rm -f gc.a *.o gctest gctest_dyn_link test_cpp \
+	      setjmp_test  mon.out gmon.out a.out core if_not_there if_mach \
+	      threadlibs $(CORD_OBJS) cord/cordtest cord/de
+	-rm -f *~
+
+gctest: test.o gc.a if_mach if_not_there
+	rm -f gctest
+	./if_mach SPARC DRSNX $(CC) $(CFLAGS) -o gctest  test.o gc.a -lucb
+	./if_mach HP_PA "" $(CC) $(CFLAGS) -o gctest  test.o gc.a -ldld
+	./if_not_there gctest $(CC) $(CFLAGS) -o gctest test.o gc.a `./threadlibs`
+
+# If an optimized setjmp_test generates a segmentation fault,
+# odds are your compiler is broken.  Gctest may still work.
+# Try compiling setjmp_t.c unoptimized.
+setjmp_test: $(srcdir)/setjmp_t.c $(srcdir)/gc.h if_mach if_not_there
+	$(CC) $(CFLAGS) -o setjmp_test $(srcdir)/setjmp_t.c
+
+test:  KandRtest cord/cordtest
+	cord/cordtest
+
+# Those tests that work even with a K&R C compiler:
+KandRtest: setjmp_test gctest
+	./setjmp_test
+	./gctest
+
+add_gc_prefix: add_gc_prefix.c
+	$(CC) -o add_gc_prefix $(srcdir)/add_gc_prefix.c
+
+gc.tar: $(SRCS) $(OTHER_FILES) add_gc_prefix
+	./add_gc_prefix $(SRCS) $(OTHER_FILES) > /tmp/gc.tar-files
+	(cd $(srcdir)/.. ; tar cvfh - `cat /tmp/gc.tar-files`) > gc.tar
+
+pc_gc.tar: $(SRCS) $(OTHER_FILES)
+	tar cvfX pc_gc.tar pc_excludes $(SRCS) $(OTHER_FILES)
+
+floppy: pc_gc.tar
+	-mmd a:/cord
+	-mmd a:/cord/private
+	-mmd a:/include
+	-mmd a:/include/private
+	mkdir /tmp/pc_gc
+	cat pc_gc.tar | (cd /tmp/pc_gc; tar xvf -)
+	-mcopy -tmn /tmp/pc_gc/* a:
+	-mcopy -tmn /tmp/pc_gc/cord/* a:/cord
+	-mcopy -mn /tmp/pc_gc/cord/de_win.ICO a:/cord
+	-mcopy -tmn /tmp/pc_gc/cord/private/* a:/cord/private
+	-mcopy -tmn /tmp/pc_gc/include/* a:/include
+	-mcopy -tmn /tmp/pc_gc/include/private/* a:/include/private
+	rm -r /tmp/pc_gc
+
+gc.tar.Z: gc.tar
+	compress gc.tar
+
+gc.tar.gz: gc.tar
+	gzip gc.tar
+
+lint: $(CSRCS) test.c
+	lint -DLINT $(CSRCS) test.c | egrep -v "possible pointer alignment problem|abort|exit|sbrk|mprotect|syscall|change in ANSI|improper alignment"
+
+# BTL: added to test shared library version of collector.
+# Currently works only under SunOS5.  Requires GC_INIT call from statically
+# loaded client code.
+ABSDIR = `pwd`
+gctest_dyn_link: test.o libgc.so
+	$(CC) -L$(ABSDIR) -R$(ABSDIR) -o gctest_dyn_link test.o -lgc -ldl -lthread
+
+gctest_irix_dyn_link: test.o libirixgc.so
+	$(CC) -L$(ABSDIR) -o gctest_irix_dyn_link test.o -lirixgc
+
+test_dll.o: test.c libgc_globals.h
+	$(CC) $(CFLAGS) -DGC_USE_DLL -c test.c -o test_dll.o
+
+test_dll: test_dll.o libgc_dll.a libgc.dll
+	$(CC) test_dll.o -L$(ABSDIR) -lgc_dll -o test_dll
+
+SYM_PREFIX-libgc=GC
+
+# Uncomment the following line to build a GNU win32 DLL
+# include Makefile.DLLs
+
+reserved_namespace: $(SRCS)
+	for file in $(SRCS) test.c test_cpp.cc; do \
+		sed s/GC_/_GC_/g < $$file > tmp; \
+		cp tmp $$file; \
+		done
+
+user_namespace: $(SRCS)
+	for file in $(SRCS) test.c test_cpp.cc; do \
+		sed s/_GC_/GC_/g < $$file > tmp; \
+		cp tmp $$file; \
+		done
diff --git a/gc/Makefile.DLLs b/gc/Makefile.DLLs
new file mode 100644
index 0000000..011f49d
--- /dev/null
+++ b/gc/Makefile.DLLs
@@ -0,0 +1,107 @@
+#-----------------------------------------------------------------------------#
+
+# Makefile.DLLs, version 0.4.
+
+# Contributed by Fergus Henderson.
+
+# This Makefile contains rules for creating DLLs on Windows using gnu-win32.
+
+#-----------------------------------------------------------------------------#
+
+# This rule creates a `.def' file, which lists the symbols that are exported
+# from the DLL.  We use `nm' to get a list of all the exported text (`T')
+# symbols and data symbols -- including uninitialized data (`B'),
+# initialized data (`D'), read-only data (`R'), and common blocks (`C').
+%.def: %.a
+	echo EXPORTS > $@
+	nm $< | grep '^........ [BCDRT] _' | sed 's/[^_]*_//' >> $@
+
+# We need to use macros to access global data:
+# the user of the DLL must refer to `foo' as `(*__imp_foo)'.
+# This rule creates a `_globals.h' file, which contains macros
+# for doing this.
+
+SYM_PREFIX = $(firstword $(SYM_PREFIX-$*) $*)
+DLL_MACRO = $(SYM_PREFIX)_USE_DLL
+IMP_MACRO = $(SYM_PREFIX)_IMP
+GLOBAL_MACRO = $(SYM_PREFIX)_GLOBAL
+
+%_globals.h: %.a
+	echo "/* automatically generated by Makefile.DLLs */"	> $@
+	echo "#if defined(__GNUC__) && defined(_WIN32) \\"	>> $@
+	echo "	&& defined($(DLL_MACRO))"			>> $@
+	echo "#  define $(IMP_MACRO)(name)	__imp_##name" 	>> $@
+	echo "#  define $(GLOBAL_MACRO)(name)	(*$(IMP_MACRO)(name))" >> $@
+	echo "#else"						>> $@
+	echo "#  define $(GLOBAL_MACRO)(name)	name"		>> $@
+	echo "#endif"						>> $@
+	echo ""							>> $@
+	for sym in `nm $< | grep '^........ [BCDR] _' | sed 's/[^_]*_//'`; do \
+		echo "#define $$sym	$(GLOBAL_MACRO)($$sym)"	>> $@; \
+	done
+
+# This rule creates the export object file (`foo.exp') which contains the
+# jump table array; this export object file becomes part of the DLL. 
+# This rule also creates the import library (`foo_dll.a') which contains small
+# stubs for all the functions exported by the DLL which jump to them via the
+# jump table.  Executables that will use the DLL must be linked against this
+# stub library.
+%.exp %_dll.a : %.def
+	dlltool $(DLLTOOLFLAGS) $(DLLTOOLFLAGS-$*)		\
+		--def $<					\
+		--dllname $*.dll				\
+		--output-exp $*.exp				\
+		--output-lib $*_dll.a
+
+# The `sed' commands below are to convert DOS-style `C:\foo\bar'
+# pathnames into Unix-style `//c/foo/bar' pathnames.
+CYGWIN32_LIBS = $(shell echo					\
+	-L`dirname \`gcc -print-file-name=libgcc.a |		\
+	sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
+	-L`dirname \`gcc -print-file-name=libcygwin.a |	\
+	sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
+	-L`dirname \`gcc -print-file-name=libkernel32.a | \
+	sed -e 's@^\\\\([A-Za-z]\\\\):@//\\\\1@g' -e 's@\\\\\\\\@/@g' \` ` \
+	-lgcc -lcygwin -lkernel32 -lgcc)
+
+RELOCATABLE=yes
+
+ifeq "$(strip $(RELOCATABLE))" "yes"
+
+# to create relocatable DLLs, we need to do two passes
+%.dll: %.exp %.a dll_fixup.o dll_init.o
+	$(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll -o $*.base			\
+		-e _dll_entry@12 dll_init.o				\
+		dll_fixup.o $*.exp $*.a					\
+		$(LDLIBS) $(LDLIBS-$*)					\
+		$(CYGWIN32_LIBS)
+	$(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll --base-file $*.base -o $@	\
+		-e _dll_entry@12 dll_init.o				\
+		dll_fixup.o $*.exp $*.a					\
+		$(LDLIBS) $(LDLIBS-$*)					\
+		$(CYGWIN32_LIBS)
+	rm -f $*.base
+else
+
+%.dll: %.exp %.a dll_fixup.o dll_init.o
+	$(LD) $(LDFLAGS) $(LDFLAGS-$*) --dll -o $@			\
+		-e _dll_entry@12 dll_init.o				\
+		dll_fixup.o $*.exp $*.a					\
+		$(LDLIBS) $(LDLIBS-$*)					\
+		$(CYGWIN32_LIBS)
+
+endif
+
+# This black magic piece of assembler needs to be linked in in order to
+# properly terminate the list of imported DLLs.
+dll_fixup.s:
+	echo '.section .idata$$3' 	> dll_fixup.s
+	echo '.long 0,0,0,0, 0,0,0,0'	>> dll_fixup.s
+
+# This bit is necessary to provide an initialization function for the DLL.
+dll_init.c:
+	echo '__attribute__((stdcall))' > dll_init.c
+	echo 'int dll_entry(int handle, int reason, void *ptr)' >> dll_init.c
+	echo '{return 1; }' >> dll_init.c
+
+dont_throw_away: dll_fixup.o dll_init.o
diff --git a/gc/Makefile.dj b/gc/Makefile.dj
new file mode 100644
index 0000000..54f77db
--- /dev/null
+++ b/gc/Makefile.dj
@@ -0,0 +1,436 @@
+# Primary targets:
+# gc.a - builds basic library
+# libgc.a - builds library for use with g++ "-fgc-keyword" extension
+# c++ - adds C++ interface to library
+# cords - adds cords (heavyweight strings) to library
+# test - prints porting information, then builds basic version of gc.a,
+#      	 and runs some tests of collector and cords.  Does not add cords or
+#	 c++ interface to gc.a
+# cord/de$(EXE_SUFFIX) - builds dumb editor based on cords.
+ABI_FLAG=
+CC=gcc $(ABI_FLAG)
+CXX=gxx $(ABI_FLAG)
+AS=gcc -c -x assembler-with-cpp $(ABI_FLAG)
+#  The above doesn't work with gas, which doesn't run cpp.
+#  Define AS as `gcc -c -x assembler-with-cpp' instead.
+#  Under Irix 6, you will have to specify the ABI (-o32, -n32, or -64)
+#  if you use something other than the default ABI on your machine.
+
+# special defines for DJGPP
+CXXLD=gxx $(ABI_FLAG)
+EXE_SUFFIX=.exe
+
+CFLAGS= -O -DATOMIC_UNCOLLECTABLE -DNO_SIGNALS -DALL_INTERIOR_POINTERS -DNO_EXECUTE_PERMISSION -DSILENT
+
+# For dynamic library builds, it may be necessary to add flags to generate
+# PIC code, e.g. -fPIC on Linux.
+
+# Setjmp_test may yield overly optimistic results when compiled
+# without optimization.
+# -DSILENT disables statistics printing, and improves performance.
+# -DCHECKSUMS reports on erroneously clear dirty bits, and unexpectedly
+#   altered stubborn objects, at substantial performance cost.
+#   Use only for incremental collector debugging.
+# -DFIND_LEAK causes the collector to assume that all inaccessible
+#   objects should have been explicitly deallocated, and reports exceptions.
+#   Finalization and the test program are not usable in this mode.
+# -DSOLARIS_THREADS enables support for Solaris (thr_) threads.
+#   (Clients should also define SOLARIS_THREADS and then include
+#   gc.h before performing thr_ or dl* or GC_ operations.)
+#   Must also define -D_REENTRANT.
+# -D_SOLARIS_PTHREADS enables support for Solaris pthreads.
+#   Define SOLARIS_THREADS as well.
+# -DIRIX_THREADS enables support for Irix pthreads.  See README.irix.
+# -DLINUX_THREADS enables support for Xavier Leroy's Linux threads.
+#   see README.linux.  -D_REENTRANT may also be required.
+# -DALL_INTERIOR_POINTERS allows all pointers to the interior
+#   of objects to be recognized.  (See gc_priv.h for consequences.)
+# -DSMALL_CONFIG tries to tune the collector for small heap sizes,
+#   usually causing it to use less space in such situations.
+#   Incremental collection no longer works in this case.
+# -DLARGE_CONFIG tunes the collector for unusually large heaps.
+#   Necessary for heaps larger than about 500 MB on most machines.
+#   Recommended for heaps larger than about 64 MB.
+# -DDONT_ADD_BYTE_AT_END is meaningful only with
+#   -DALL_INTERIOR_POINTERS.  Normally -DALL_INTERIOR_POINTERS
+#   causes all objects to be padded so that pointers just past the end of
+#   an object can be recognized.  This can be expensive.  (The padding
+#   is normally more than one byte due to alignment constraints.)
+#   -DDONT_ADD_BYTE_AT_END disables the padding.
+# -DNO_SIGNALS does not disable signals during critical parts of
+#   the GC process.  This is no less correct than many malloc 
+#   implementations, and it sometimes has a significant performance
+#   impact.  However, it is dangerous for many not-quite-ANSI C
+#   programs that call things like printf in asynchronous signal handlers.
+# -DNO_EXECUTE_PERMISSION may cause some or all of the heap to not
+#   have execute permission, i.e. it may be impossible to execute
+#   code from the heap.  Currently this only affects the incremental
+#   collector on UNIX machines.  It may greatly improve its performance,
+#   since this may avoid some expensive cache synchronization.
+# -DOPERATOR_NEW_ARRAY declares that the C++ compiler supports the
+#   new syntax "operator new[]" for allocating and deleting arrays.
+#   See gc_cpp.h for details.  No effect on the C part of the collector.
+#   This is defined implicitly in a few environments.
+# -DREDIRECT_MALLOC=X causes malloc, realloc, and free to be defined
+#   as aliases for X, GC_realloc, and GC_free, respectively.
+#   Calloc is redefined in terms of the new malloc.  X should
+#   be either GC_malloc or GC_malloc_uncollectable.
+#   The former is occasionally useful for working around leaks in code
+#   you don't want to (or can't) look at.  It may not work for
+#   existing code, but it often does.  Neither works on all platforms,
+#   since some ports use malloc or calloc to obtain system memory.
+#   (Probably works for UNIX, and win32.)
+# -DIGNORE_FREE turns calls to free into a noop.  Only useful with
+#   -DREDIRECT_MALLOC.
+# -DNO_DEBUGGING removes GC_dump and the debugging routines it calls.
+#   Reduces code size slightly at the expense of debuggability.
+# -DJAVA_FINALIZATION makes it somewhat safer to finalize objects out of
+#   order by specifying a nonstandard finalization mark procedure  (see
+#   finalize.c).  Objects reachable from finalizable objects will be marked
+#   in a sepearte postpass, and hence their memory won't be reclaimed.
+#   Not recommended unless you are implementing a language that specifies
+#   these semantics.
+# -DFINALIZE_ON_DEMAND causes finalizers to be run only in response
+#   to explicit GC_invoke_finalizers() calls.
+# -DATOMIC_UNCOLLECTABLE includes code for GC_malloc_atomic_uncollectable.
+#   This is useful if either the vendor malloc implementation is poor,
+#   or if REDIRECT_MALLOC is used.
+# -DHBLKSIZE=ddd, where ddd is a power of 2 between 512 and 16384, explicitly
+#   sets the heap block size.  Each heap block is devoted to a single size and
+#   kind of object.  For the incremental collector it makes sense to match
+#   the most likely page size.  Otherwise large values result in more
+#   fragmentation, but generally better performance for large heaps.
+# -DUSE_MMAP use MMAP instead of sbrk to get new memory.
+#   Works for Solaris and Irix.
+# -DMMAP_STACKS (for Solaris threads) Use mmap from /dev/zero rather than
+#   GC_scratch_alloc() to get stack memory.
+# -DPRINT_BLACK_LIST Whenever a black list entry is added, i.e. whenever
+#   the garbage collector detects a value that looks almost, but not quite,
+#   like a pointer, print both the address containing the value, and the
+#   value of the near-bogus-pointer.  Can be used to identifiy regions of
+#   memory that are likely to contribute misidentified pointers.
+# -DOLD_BLOCK_ALLOC Use the old, possibly faster, large block
+#   allocation strategy.  The new strategy tries harder to minimize
+#   fragmentation, sometimes at the expense of spending more time in the
+#   large block allocator and/or collecting more frequently.
+#   If you expect the allocator to promtly use an explicitly expanded
+#   heap, this is highly recommended.
+#
+
+
+
+LIBGC_CFLAGS= -O -DNO_SIGNALS -DSILENT \
+    -DREDIRECT_MALLOC=GC_malloc_uncollectable \
+    -DDONT_ADD_BYTE_AT_END -DALL_INTERIOR_POINTERS
+#   Flags for building libgc.a -- the last two are required.
+
+CXXFLAGS= $(CFLAGS) -DOPERATOR_NEW_ARRAY
+AR= ar
+RANLIB= ranlib
+
+
+# Redefining srcdir allows object code for the nonPCR version of the collector
+# to be generated in different directories.  In this case, the destination directory
+# should contain a copy of the original include directory.
+srcdir = .
+VPATH = $(srcdir)
+
+OBJS= alloc.o reclaim.o allchblk.o misc.o mach_dep.o os_dep.o mark_rts.o headers.o mark.o obj_map.o blacklst.o finalize.o new_hblk.o dbg_mlc.o malloc.o stubborn.o checksums.o solaris_threads.o irix_threads.o linux_threads.o typd_mlc.o ptr_chck.o mallocx.o solaris_pthreads.o
+
+CSRCS= reclaim.c allchblk.c misc.c alloc.c mach_dep.c os_dep.c mark_rts.c headers.c mark.c obj_map.c pcr_interface.c blacklst.c finalize.c new_hblk.c real_malloc.c dyn_load.c dbg_mlc.c malloc.c stubborn.c checksums.c solaris_threads.c irix_threads.c linux_threads.c typd_mlc.c ptr_chck.c mallocx.c solaris_pthreads.c
+
+CORD_SRCS=  cord/cordbscs.c cord/cordxtra.c cord/cordprnt.c cord/de.c cord/cordtest.c cord/cord.h cord/ec.h cord/private/cord_pos.h cord/de_win.c cord/de_win.h cord/de_cmds.h cord/de_win.ICO cord/de_win.RC cord/SCOPTIONS.amiga cord/SMakefile.amiga
+
+CORD_OBJS=  cord/cordbscs.o cord/cordxtra.o cord/cordprnt.o
+
+SRCS= $(CSRCS) mips_sgi_mach_dep.s rs6000_mach_dep.s alpha_mach_dep.s \
+    sparc_mach_dep.s gc.h gc_typed.h gc_hdrs.h gc_priv.h gc_private.h \
+    gcconfig.h gc_mark.h include/gc_inl.h include/gc_inline.h gc.man \
+    threadlibs.c if_mach.c if_not_there.c gc_cpp.cc gc_cpp.h weakpointer.h \
+    gcc_support.c mips_ultrix_mach_dep.s include/gc_alloc.h gc_alloc.h \
+    include/new_gc_alloc.h include/javaxfc.h sparc_sunos4_mach_dep.s \
+    solaris_threads.h $(CORD_SRCS)
+
+OTHER_FILES= Makefile PCR-Makefile OS2_MAKEFILE NT_MAKEFILE BCC_MAKEFILE \
+           README test.c test_cpp.cc setjmp_t.c SMakefile.amiga \
+           SCoptions.amiga README.amiga README.win32 cord/README \
+           cord/gc.h include/gc.h include/gc_typed.h include/cord.h \
+           include/ec.h include/private/cord_pos.h include/private/gcconfig.h \
+           include/private/gc_hdrs.h include/private/gc_priv.h \
+	   include/gc_cpp.h README.rs6000 \
+           include/weakpointer.h README.QUICK callprocs pc_excludes \
+           barrett_diagram README.OS2 README.Mac MacProjects.sit.hqx \
+           MacOS.c EMX_MAKEFILE makefile.depend README.debugging \
+           include/gc_cpp.h Mac_files/datastart.c Mac_files/dataend.c \
+           Mac_files/MacOS_config.h Mac_files/MacOS_Test_config.h \
+           add_gc_prefix.c README.solaris2 README.sgi README.hp README.uts \
+	   win32_threads.c NT_THREADS_MAKEFILE gc.mak README.dj Makefile.dj \
+	   README.alpha README.linux version.h Makefile.DLLs \
+	   WCC_MAKEFILE
+
+CORD_INCLUDE_FILES= $(srcdir)/gc.h $(srcdir)/cord/cord.h $(srcdir)/cord/ec.h \
+           $(srcdir)/cord/private/cord_pos.h
+
+UTILS= if_mach$(EXE_SUFFIX) if_not_there$(EXE_SUFFIX)
+
+# Libraries needed for curses applications.  Only needed for de.
+CURSES= -lcurses -ltermlib
+
+# The following is irrelevant on most systems.  But a few
+# versions of make otherwise fork the shell specified in
+# the SHELL environment variable.
+SHELL= /bin/sh
+
+SPECIALCFLAGS = 
+# Alternative flags to the C compiler for mach_dep.c.
+# Mach_dep.c often doesn't like optimization, and it's
+# not time-critical anyway.
+# Set SPECIALCFLAGS to -q nodirect_code on Encore.
+
+all: gc.a gctest$(EXE_SUFFIX)
+
+pcr: PCR-Makefile gc_private.h gc_hdrs.h gc.h gcconfig.h mach_dep.o $(SRCS)
+	make -f PCR-Makefile depend
+	make -f PCR-Makefile
+
+$(OBJS) test.o dyn_load.o dyn_load_sunos53.o: $(srcdir)/gc_priv.h $(srcdir)/gc_hdrs.h $(srcdir)/gc.h \
+    $(srcdir)/gcconfig.h $(srcdir)/gc_typed.h Makefile
+# The dependency on Makefile is needed.  Changing
+# options such as -DSILENT affects the size of GC_arrays,
+# invalidating all .o files that rely on gc_priv.h
+
+mark.o typd_mlc.o finalize.o: $(srcdir)/gc_mark.h
+
+base_lib gc.a: $(OBJS) dyn_load.o $(UTILS)
+	echo > base_lib
+	rm -f on_sparc_sunos5_1
+	./if_mach SPARC SUNOS5 touch on_sparc_sunos5_1
+	./if_mach SPARC SUNOS5 $(AR) rus gc.a $(OBJS) dyn_load.o
+	./if_not_there on_sparc_sunos5_1 $(AR) ru gc.a $(OBJS) dyn_load.o
+	-./if_not_there on_sparc_sunos5_1 $(RANLIB) gc.a
+#	ignore ranlib failure; that usually means it doesn't exist, and isn't needed
+
+cords: $(CORD_OBJS) cord/cordtest$(EXE_SUFFIX) $(UTILS)
+	rm -f on_sparc_sunos5_3
+	./if_mach SPARC SUNOS5 touch on_sparc_sunos5_3
+	./if_mach SPARC SUNOS5 $(AR) rus gc.a $(CORD_OBJS)
+	./if_not_there on_sparc_sunos5_3 $(AR) ru gc.a $(CORD_OBJS)
+	-./if_not_there on_sparc_sunos5_3 $(RANLIB) gc.a
+
+gc_cpp.o: $(srcdir)/gc_cpp.cc $(srcdir)/gc_cpp.h $(srcdir)/gc.h Makefile
+	$(CXX) -c $(CXXFLAGS) $(srcdir)/gc_cpp.cc
+
+test_cpp$(EXE_SUFFIX): $(srcdir)/test_cpp.cc $(srcdir)/gc_cpp.h gc_cpp.o $(srcdir)/gc.h \
+base_lib $(UTILS)
+	rm -f test_cpp test_cpp$(EXE_SUFFIX)
+	./if_mach HP_PA "" $(CXX) $(CXXFLAGS) -o test_cpp $(srcdir)/test_cpp.cc gc_cpp.o gc.a -ldld
+	./if_not_there test_cpp$(EXE_SUFFIX) $(CXXLD) $(CXXFLAGS) -o test_cpp$(EXE_SUFFIX) $(srcdir)/test_cpp.cc gc_cpp.o gc.a
+	rm -f test_cpp
+
+c++: gc_cpp.o $(srcdir)/gc_cpp.h test_cpp$(EXE_SUFFIX)
+	rm -f on_sparc_sunos5_4
+	./if_mach SPARC SUNOS5 touch on_sparc_sunos5_4
+	./if_mach SPARC SUNOS5 $(AR) rus gc.a gc_cpp.o
+	./if_not_there on_sparc_sunos5_4 $(AR) ru gc.a gc_cpp.o
+	-./if_not_there on_sparc_sunos5_4 $(RANLIB) gc.a
+	./test_cpp$(EXE_SUFFIX) 1
+	echo > c++
+
+dyn_load_sunos53.o: dyn_load.c
+	$(CC) $(CFLAGS) -DSUNOS53_SHARED_LIB -c $(srcdir)/dyn_load.c -o $@
+
+# SunOS5 shared library version of the collector
+sunos5gc.so: $(OBJS) dyn_load_sunos53.o
+	$(CC) -G -o sunos5gc.so $(OBJS) dyn_load_sunos53.o -ldl
+	ln sunos5gc.so libgc.so
+
+# Alpha/OSF shared library version of the collector
+libalphagc.so: $(OBJS)
+	ld -shared -o libalphagc.so $(OBJS) dyn_load.o -lc
+	ln libalphagc.so libgc.so
+
+# IRIX shared library version of the collector
+libirixgc.so: $(OBJS) dyn_load.o
+	ld -shared $(ABI_FLAG) -o libirixgc.so $(OBJS) dyn_load.o -lc
+	ln libirixgc.so libgc.so
+
+# Linux shared library version of the collector
+liblinuxgc.so: $(OBJS) dyn_load.o
+	gcc -shared -o liblinuxgc.so $(OBJS) dyn_load.o -lo
+	ln liblinuxgc.so libgc.so
+
+mach_dep.o: $(srcdir)/mach_dep.c $(srcdir)/mips_sgi_mach_dep.s $(srcdir)/mips_ultrix_mach_dep.s $(srcdir)/rs6000_mach_dep.s $(UTILS)
+	rm -f mach_dep.o
+	./if_mach MIPS IRIX5 $(AS) -o mach_dep.o $(srcdir)/mips_sgi_mach_dep.s
+	./if_mach MIPS RISCOS $(AS) -o mach_dep.o $(srcdir)/mips_ultrix_mach_dep.s
+	./if_mach MIPS ULTRIX $(AS) -o mach_dep.o $(srcdir)/mips_ultrix_mach_dep.s
+	./if_mach RS6000 "" $(AS) -o mach_dep.o $(srcdir)/rs6000_mach_dep.s
+	./if_mach ALPHA "" $(AS) -o mach_dep.o $(srcdir)/alpha_mach_dep.s
+	./if_mach SPARC SUNOS5 $(AS) -o mach_dep.o $(srcdir)/sparc_mach_dep.s
+	./if_mach SPARC SUNOS4 $(AS) -o mach_dep.o $(srcdir)/sparc_sunos4_mach_dep.s
+	./if_not_there mach_dep.o $(CC) -c $(SPECIALCFLAGS) $(srcdir)/mach_dep.c
+
+mark_rts.o: $(srcdir)/mark_rts.c if_mach if_not_there $(UTILS)
+	rm -f mark_rts.o
+	-./if_mach ALPHA OSF1 $(CC) -c $(CFLAGS) -Wo,-notail $(srcdir)/mark_rts.c
+	./if_not_there mark_rts.o $(CC) -c $(CFLAGS) $(srcdir)/mark_rts.c
+#	Work-around for DEC optimizer tail recursion elimination bug.
+#  The ALPHA-specific line should be removed if gcc is used.
+
+alloc.o: version.h
+
+cord/cordbscs.o: $(srcdir)/cord/cordbscs.c $(CORD_INCLUDE_FILES)
+	$(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordbscs.c
+	mv cordbscs.o cord/cordbscs.o
+#  not all compilers understand -o filename
+
+cord/cordxtra.o: $(srcdir)/cord/cordxtra.c $(CORD_INCLUDE_FILES)
+	$(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordxtra.c
+	mv cordxtra.o cord/cordxtra.o
+
+cord/cordprnt.o: $(srcdir)/cord/cordprnt.c $(CORD_INCLUDE_FILES)
+	$(CC) $(CFLAGS) -c -I$(srcdir) $(srcdir)/cord/cordprnt.c
+	mv cordprnt.o cord/cordprnt.o
+
+cord/cordtest$(EXE_SUFFIX): $(srcdir)/cord/cordtest.c $(CORD_OBJS) gc.a $(UTILS) /tmp
+	rm -f cord/cordtest$(EXE_SUFFIX)
+	./if_mach SPARC DRSNX $(CC) $(CFLAGS) -o cord/cordtest$(EXE_SUFFIX) $(srcdir)/cord/cordtest.c $(CORD_OBJS) gc.a -lucb
+	./if_mach HP_PA "" $(CC) $(CFLAGS) -o cord/cordtest$(EXE_SUFFIX) $(srcdir)/cord/cordtest.c $(CORD_OBJS) gc.a -ldld
+	./if_not_there cord/cordtest$(EXE_SUFFIX) $(CC) $(CFLAGS) -o cord/cordtest $(srcdir)/cord/cordtest.c $(CORD_OBJS) gc.a
+	rm -f cord/cordtest cordtest
+	-mv cordtest$(EXE_SUFFIX) cord/
+
+/tmp: $(UTILS)
+	./if_not_there /tmp mkdir /tmp
+
+cord/de$(EXE_SUFFIX): $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a $(UTILS)
+	rm -f cord/de cord/de$(EXE_SUFFIX)
+	./if_mach SPARC DRSNX $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a $(CURSES) -lucb `./threadlibs`
+	./if_mach HP_PA "" $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a $(CURSES) -ldld
+	./if_mach RS6000 "" $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a -lcurses
+	./if_mach I386 LINUX $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a -lcurses `./threadlibs`
+	./if_mach ALPHA LINUX $(CC) $(CFLAGS) -o cord/de $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a -lcurses
+	./if_not_there cord/de$(EXE_SUFFIX) $(CC) $(CFLAGS) -o cord/de$(EXE_SUFFIX) $(srcdir)/cord/de.c cord/cordbscs.o cord/cordxtra.o gc.a $(CURSES)
+
+if_mach$(EXE_SUFFIX): $(srcdir)/if_mach.c $(srcdir)/gcconfig.h
+	rm -f if_mach if_mach$(EXE_SUFFIX)
+	$(CC) $(CFLAGS) -o if_mach $(srcdir)/if_mach.c
+	rm -f if_mach
+
+threadlibs$(EXE_SUFFIX): $(srcdir)/threadlibs.c $(srcdir)/gcconfig.h Makefile
+	rm -f threadlibs threadlibs$(EXE_SUFFIX)
+	$(CC) $(CFLAGS) -o threadlibs $(srcdir)/threadlibs.c
+	rm -f threadlibs
+
+if_not_there$(EXE_SUFFIX): $(srcdir)/if_not_there.c
+	rm -f if_not_there if_not_there$(EXE_SUFFIX)
+	$(CC) $(CFLAGS) -o if_not_there $(srcdir)/if_not_there.c
+	rm -f if_not_there
+
+# Clean removes *.o several times,
+# because as the first one doesn't seem to get them all!
+clean: 
+	rm -f gc.a *.o
+	rm -f *.o
+	rm -f *.o
+	rm -f cord/*.o
+	rm -f gctest gctest_dyn_link test_cpp
+	rm -f setjmp_test  mon.out gmon.out a.out core if_not_there if_mach
+	rm -f threadlibs $(CORD_OBJS) cordtest cord/cordtest de cord/de
+	rm -f gctest$(EXE_SUFFIX) gctest_dyn_link$(EXE_SUFFIX) test_cpp$(EXE_SUFFIX)
+	rm -f setjmp_test$(EXE_SUFFIX) if_not_there$(EXE_SUFFIX) if_mach$(EXE_SUFFIX)
+	rm -f threadlibs$(EXE_SUFFIX) cord/cordtest$(EXE_SUFFIX)
+	-rm -f *~
+
+gctest$(EXE_SUFFIX): test.o gc.a if_mach$(EXE_SUFFIX) if_not_there$(EXE_SUFFIX)
+	rm -f gctest gctest$(EXE_SUFFIX)
+	./if_mach SPARC DRSNX $(CC) $(CFLAGS) -o gctest  test.o gc.a -lucb
+	./if_mach HP_PA "" $(CC) $(CFLAGS) -o gctest  test.o gc.a -ldld
+	./if_not_there gctest$(EXE_SUFFIX) $(CC) $(CFLAGS) -o gctest$(EXE_SUFFIX) test.o gc.a
+	rm -f gctest
+
+# If an optimized setjmp_test generates a segmentation fault,
+# odds are your compiler is broken.  Gctest may still work.
+# Try compiling setjmp_t.c unoptimized.
+setjmp_test$(EXE_SUFFIX): $(srcdir)/setjmp_t.c $(srcdir)/gc.h \
+		if_mach$(EXE_SUFFIX) if_not_there$(EXE_SUFFIX)
+	rm -f setjmp_test$(EXE_SUFFIX)
+	$(CC) $(CFLAGS) -o setjmp_test $(srcdir)/setjmp_t.c
+	rm -f setjmp_test
+
+test:  KandRtest cord/cordtest$(EXE_SUFFIX)
+	./cord/cordtest$(EXE_SUFFIX)
+
+# Those tests that work even with a K&R C compiler:
+KandRtest: setjmp_test$(EXE_SUFFIX) gctest$(EXE_SUFFIX)
+	./setjmp_test$(EXE_SUFFIX)
+	./gctest$(EXE_SUFFIX)
+
+add_gc_prefix$(EXE_SUFFIX): add_gc_prefix.c
+	$(CC) -o add_gc_prefix$(EXE_SUFFIX) $(srcdir)/add_gc_prefix.c
+	rm -f add_gc_prefix
+
+gc.tar: $(SRCS) $(OTHER_FILES) add_gc_prefix
+	./add_gc_prefix$(EXE_SUFFIX) $(SRCS) $(OTHER_FILES) > /tmp/gc.tar-files
+	(cd $(srcdir)/.. ; tar cvfh - `cat /tmp/gc.tar-files`) > gc.tar
+
+pc_gc.tar: $(SRCS) $(OTHER_FILES)
+	tar cvfX pc_gc.tar pc_excludes $(SRCS) $(OTHER_FILES)
+
+floppy: pc_gc.tar
+	-mmd a:/cord
+	-mmd a:/cord/private
+	-mmd a:/include
+	-mmd a:/include/private
+	mkdir /tmp/pc_gc
+	cat pc_gc.tar | (cd /tmp/pc_gc; tar xvf -)
+	-mcopy -tmn /tmp/pc_gc/* a:
+	-mcopy -tmn /tmp/pc_gc/cord/* a:/cord
+	-mcopy -mn /tmp/pc_gc/cord/de_win.ICO a:/cord
+	-mcopy -tmn /tmp/pc_gc/cord/private/* a:/cord/private
+	-mcopy -tmn /tmp/pc_gc/include/* a:/include
+	-mcopy -tmn /tmp/pc_gc/include/private/* a:/include/private
+	rm -r /tmp/pc_gc
+
+gc.tar.Z: gc.tar
+	compress gc.tar
+
+gc.tar.gz: gc.tar
+	gzip gc.tar
+
+lint: $(CSRCS) test.c
+	lint -DLINT $(CSRCS) test.c | egrep -v "possible pointer alignment problem|abort|exit|sbrk|mprotect|syscall"
+
+# BTL: added to test shared library version of collector.
+# Currently works only under SunOS5.  Requires GC_INIT call from statically
+# loaded client code.
+ABSDIR = `pwd`
+gctest_dyn_link: test.o libgc.so
+	$(CC) -L$(ABSDIR) -R$(ABSDIR) -o gctest_dyn_link test.o -lgc -ldl -lthread
+
+gctest_irix_dyn_link: test.o libirixgc.so
+	$(CC) -L$(ABSDIR) -o gctest_irix_dyn_link test.o -lirixgc
+
+test_dll.o: test.c libgc_globals.h
+	$(CC) $(CFLAGS) -DGC_USE_DLL -c test.c -o test_dll.o
+
+test_dll: test_dll.o libgc_dll.a libgc.dll
+	$(CC) test_dll.o -L$(ABSDIR) -lgc_dll -o test_dll
+
+SYM_PREFIX-libgc=GC
+
+# Uncomment the following line to build a GNU win32 DLL
+# include Makefile.DLLs
+
+reserved_namespace: $(SRCS)
+	for file in $(SRCS) test.c test_cpp.cc; do \
+		sed s/GC_/_GC_/g < $$file > tmp; \
+		cp tmp $$file; \
+		done
+
+user_namespace: $(SRCS)
+	for file in $(SRCS) test.c test_cpp.cc; do \
+		sed s/_GC_/GC_/g < $$file > tmp; \
+		cp tmp $$file; \
+		done
+