4 # The contents of this file are subject to the terms of the
5 # Common Development and Distribution License (the "License").
6 # You may not use this file except in compliance with the License.
8 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 # or http://www.opensolaris.org/os/licensing.
10 # See the License for the specific language governing permissions
11 # and limitations under the License.
13 # When distributing Covered Code, include this CDDL HEADER in each
14 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 # If applicable, add the following below this CDDL HEADER, with the
16 # fields enclosed by brackets "[]" replaced with your own identifying
17 # information: Portions Copyright [yyyy] [name of copyright owner]
22 # Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
23 # Copyright (c) 2016 by Delphix. All rights reserved.
28 COBJS = s10_brand.o s10_deleted.o s10_signal.o
29 ASOBJS = crt.o handler.o runexe.o brand_util.o
32 include ../../Makefile.s10
33 include $(SRC)/lib/Makefile.lib
39 CSRCS = $(COBJS:%o=../common/%c)
40 SHAREDOBJS = $(ASOBJS:%o=$(ISAOBJDIR)/%o)
44 # Note that the architecture specific makefiles MUST update DYNFLAGS to
45 # explicitly specify an interpreter for the brand emulation library so that we
46 # use /lib/ld.so.1 or /lib/64/ld.so.1, which in a s10 zone is the Solaris 10
47 # linker. This is different from some other brands where the linker that is
48 # used is the native system linker (/.SUNWnative/.../ld.so.1). We have to do
49 # this because the linker has a very incestuous relationship with libc and we
50 # don't want to use the native linker with the s10 version of libc. (This may
51 # come as a surprise to the reader, but when our library is loaded it get's
52 # linked against the s10 version of libc.) Although the linker interfaces are
53 # normally stable, there are examples, such as with the solaris8 brand, where
54 # we could not combine the brand's libc with the native linker. Since we want
55 # to run in a known configuration, we use the S10 libc/linker combination.
57 # There is one more non-obvious side effect of using the s10 linker that
58 # should be mentioned. Since the linker is used to setup processes before
59 # libc is loaded, it makes system calls directly (ie avoiding libc), and
60 # it makes these system calls before our library has been initialized.
61 # Since our library hasn't been initialized yet, there's no way for us
62 # to intercept and emulate any of those system calls. So if any of those
63 # system calls ever change in the native code such that they break the s10
64 # linker then we're kinda screwed and will need to re-visit the current
65 # solution. (The likely solution then will probably be to start using the
66 # native linker with our brand emulation library.)
68 # Note that we make sure to link our brand emulation library
69 # libmapmalloc. This is required because in most cases there will be two
70 # copies of libc in the same process and we don't want them to fight over
71 # the heap. So for our brand library we link against libmapmalloc so that
72 # if we (our or copy of libc) try to allocate any memory it will be done
73 # via mmap() instead of brk().
75 CPPFLAGS += -D_REENTRANT -U_ASM \
76 -I. -I$(BRAND_SHARED)/brand/sys -I../sys \
77 -I$(UTSBASE)/common/brand/solaris10 \
78 -I$(SRC)/uts/common/fs/zfs
79 CFLAGS += $(CCVERBOSE)
80 # Needed to handle zfs include files
83 DYNFLAGS += $(DYNFLAGS_$(CLASS))
84 DYNFLAGS += $(BLOCAL) $(ZNOVERSION) -Wl,-e_start
85 LDLIBS += -lc -lmapmalloc
86 LINTFLAGS += -erroff=E_STATIC_UNUSED
87 LINTFLAGS64 += -erroff=E_STATIC_UNUSED
89 CERRWARN += -_gcc=-Wno-uninitialized
91 $(LIBS):= PICS += $(SHAREDOBJS)
99 include $(SRC)/lib/Makefile.targ