1 #
   2 # CDDL HEADER START
   3 #
   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.
   7 #
   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.
  12 #
  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]
  18 #
  19 # CDDL HEADER END
  20 #
  21 #
  22 # Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  23 # Copyright (c) 2016 by Delphix. All rights reserved.
  24 # Copyright 2020 Joyent, Inc.
  25 #
  26 
  27 LIBRARY =       s10_brand.a
  28 VERS =          .1
  29 COBJS =         s10_brand.o s10_deleted.o s10_signal.o
  30 ASOBJS =        crt.o handler.o runexe.o brand_util.o
  31 OBJECTS =       $(COBJS)
  32 
  33 include ../../Makefile.s10
  34 include $(SRC)/lib/Makefile.lib
  35 
  36 SRCDIR =        ../common
  37 UTSBASE =       $(SRC)/uts
  38 
  39 LIBS =          $(DYNLIB)
  40 CSRCS =         $(COBJS:%o=../common/%c)
  41 SHAREDOBJS =    $(ASOBJS:%o=$(ISAOBJDIR)/%o)
  42 SRCS =          $(CSRCS)
  43 
  44 #
  45 # Note that the architecture specific makefiles MUST update DYNFLAGS to
  46 # explicitly specify an interpreter for the brand emulation library so that we
  47 # use /lib/ld.so.1 or /lib/64/ld.so.1, which in a s10 zone is the Solaris 10
  48 # linker.  This is different from some other brands where the linker that is
  49 # used is the native system linker (/.SUNWnative/.../ld.so.1).  We have to do
  50 # this because the linker has a very incestuous relationship with libc and we
  51 # don't want to use the native linker with the s10 version of libc.  (This may
  52 # come as a surprise to the reader, but when our library is loaded it get's
  53 # linked against the s10 version of libc.)  Although the linker interfaces are
  54 # normally stable, there are examples, such as with the solaris8 brand, where
  55 # we could not combine the brand's libc with the native linker.  Since we want
  56 # to run in a known configuration, we use the S10 libc/linker combination.
  57 #
  58 # There is one more non-obvious side effect of using the s10 linker that
  59 # should be mentioned.  Since the linker is used to setup processes before
  60 # libc is loaded, it makes system calls directly (ie avoiding libc), and
  61 # it makes these system calls before our library has been initialized.
  62 # Since our library hasn't been initialized yet, there's no way for us
  63 # to intercept and emulate any of those system calls.  So if any of those
  64 # system calls ever change in the native code such that they break the s10
  65 # linker then we're kinda screwed and will need to re-visit the current
  66 # solution.  (The likely solution then will probably be to start using the
  67 # native linker with our brand emulation library.)
  68 #
  69 # Note that we make sure to link our brand emulation library
  70 # libmapmalloc.  This is required because in most cases there will be two
  71 # copies of libc in the same process and we don't want them to fight over
  72 # the heap.  So for our brand library we link against libmapmalloc so that
  73 # if we (our or copy of libc) try to allocate any memory it will be done
  74 # via mmap() instead of brk().
  75 #
  76 CPPFLAGS +=     -D_REENTRANT -U_ASM \
  77                 -I. -I$(BRAND_SHARED)/brand/sys -I../sys \
  78                 -I$(UTSBASE)/common/brand/solaris10 \
  79                 -I$(SRC)/uts/common/fs/zfs
  80 CFLAGS +=       $(CCVERBOSE)
  81 # Needed to handle zfs include files
  82 CSTD=   $(CSTD_GNU99)
  83 C99LMODE=       -Xc99=%all
  84 DYNFLAGS +=     $(DYNFLAGS_$(CLASS))
  85 DYNFLAGS +=     $(BLOCAL) $(ZNOVERSION) -Wl,-e_start
  86 LDLIBS +=       -lmapmalloc -lc
  87 LINTFLAGS +=    -erroff=E_STATIC_UNUSED
  88 LINTFLAGS64 +=  -erroff=E_STATIC_UNUSED
  89 
  90 CERRWARN +=     $(CNOWARN_UNINIT)
  91 
  92 $(LIBS):= PICS += $(SHAREDOBJS)
  93 
  94 .KEEP_STATE:
  95 
  96 all: $(LIBS)
  97 
  98 include $(SRC)/lib/Makefile.targ