pjs/gc/boehm/Makefile.unix

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Makefile
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# 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.
# -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 \
-DLINUX_THREADS -D_REENTRANT -fPIC
#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 $(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 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 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 || 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 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 || 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 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 || 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_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_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