[deliverable/binutils-gdb.git] / ld / genscripts.sh

#!/bin/sh
# genscripts.sh - generate the ld-emulation-target specific files
# Copyright 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
#
# This file is part of the Gnu Linker.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GLD; see the file COPYING.  If not, write to the Free
# Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
# 02110-1301, USA.
#
# Usage: genscripts_extra.sh \
#          srcdir \
#          libdir \
#          prefix \
#          exec_prefix \
#          host \
#          target \
#          target_alias \
#          default_emulation \
#          native_lib_dirs \
#          use_sysroot \
#          enable_initfini_array \
#          this_emulation \
# optional:
#          tool_dir \
#          customizer_script
#
# Sample usage:
#
#   genscripts_extra.sh \
#    /sources/ld \
#    /usr/local/lib \
#    /usr/local \
#    /usr/local \
#    sparc-sun-sunos4.1.3 \
#    sparc-sun-sunos4.1.3 \
#    sparc-sun-sunos4.1.3 \
#    sun4 \
#    "" \
#    no \
#    sun3 \
#    sparc-sun-sunos4.1.3 \
#    sparc.sh
#
# produces the linker scripts:
#
#   sun3.x       [default linker script]
#   sun3.xbn     [used when the linker is invoked with "-N"]
#   sun3.xn      [used when the linker is invoked with "-n"]
#   sun3.xr      [used when the linker is invoked with "-r"]
#   sun3.xu      [used when the linker is invoked with "-Ur"]
# and maybe:
#   sun3.xc      [used when the linker is invoked with "-z combreloc"]
#   sun3.xsc     [used when the linker is invoked with "--shared"]
#   sun3.xdc     [used when the linker is invoked with "-pie"]
#   sun3.xa      [used when the linker is invoked with "--enable-auto-import"]
#
# It also produced the C source file:
#
#   em_sun3.c
#
# which is then compiled into the linker.
#
# The linker scripts are created by running the shell script
# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
# (and any other variables it wants to).  ${SCRIPT_NAME} is then
# invoked with a variable called ${LD_FLAG} to tell it which version
# of the linker script to create.


srcdir=$1
libdir=$2
prefix=$3
exec_prefix=$4
host=$5
target=$6
target_alias=$7
EMULATION_LIBPATH=$8
NATIVE_LIB_DIRS=$9
shift 9
use_sysroot=$1
ENABLE_INITFINI_ARRAY=$2
EMULATION_NAME=$3
TOOL_LIB=$4
CUSTOMIZER_SCRIPT=$5

if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
  CUSTOMIZER_SCRIPT=${EMULATION_NAME}
fi
CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh"

# Include the emulation-specific parameters:
. ${CUSTOMIZER_SCRIPT}

if test -d ldscripts; then
  true
else
  mkdir ldscripts
fi

# Set some flags for the emultempl scripts.  USE_LIBPATH will
# be set for any libpath-using emulation; NATIVE will be set for a
# libpath-using emulation where ${host} = ${target}.  NATIVE
# may already have been set by the emulparams file, but that's OK
# (it'll just get set to "yes" twice).

case " $EMULATION_LIBPATH " in
  *" ${EMULATION_NAME} "*)
    if [ "x${host}" = "x${target}" ] ; then
      NATIVE=yes
      USE_LIBPATH=yes
    elif [ "x${use_sysroot}" = "xyes" ] ; then
      USE_LIBPATH=yes
    fi
    ;;
esac

# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
if test "x$NATIVE" = "xyes" ; then
  USE_LIBPATH=yes
fi

# Set the library search path, for libraries named by -lfoo.
# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
# Otherwise, the default is set here.
#
# The format is the usual list of colon-separated directories.
# To force a logically empty LIB_PATH, do LIBPATH=":".
#
# If we are using a sysroot, prefix library paths with "=" to indicate this.
#
# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
# the library path with the suffix applied.

# Paths with LIBPATH_SUFFIX
lib_path1=
# Paths without LIBPATH_SUFFIX
lib_path2=
if [ "${LIB_PATH}" != ":" ] ; then
  lib_path2=${LIB_PATH}
fi

# Add args to lib_path1 and lib_path2, discarding any duplicates
append_to_lib_path()
{
  if [ $# != 0 ]; then
    for lib in "$@"; do
      # The "=" is harmless if we aren't using a sysroot, but also needless.
      if [ "x${use_sysroot}" = "xyes" ] ; then
	lib="=${lib}"
      fi
      skip_lib=no
      if test -n "${LIBPATH_SUFFIX}"; then
	case "${lib}" in
	  *${LIBPATH_SUFFIX})
	    case :${lib_path1}: in
	      *:${lib}:*) ;;
	      ::) lib_path1=${lib} ;;
	      *) lib_path1=${lib_path1}:${lib} ;;
	    esac ;;
	  *)
	    if test -n "${LIBPATH_SUFFIX_SKIP}"; then
	      case "${lib}" in
		*${LIBPATH_SUFFIX_SKIP}) skip_lib=yes ;;
	      esac
	    fi
	    if test "${skip_lib}" = "no"; then
	      case :${lib_path1}: in
		*:${lib}${LIBPATH_SUFFIX}:*) ;;
		::) lib_path1=${lib}${LIBPATH_SUFFIX} ;;
	        *) lib_path1=${lib_path1}:${lib}${LIBPATH_SUFFIX} ;;
	      esac
	    fi ;;
	esac
      fi
      if test "${skip_lib}" = "no"; then
	case :${lib_path1}:${lib_path2}: in
	  *:${lib}:*) ;;
	  *::) lib_path2=${lib} ;;
	  *) lib_path2=${lib_path2}:${lib} ;;
	esac
      fi
    done
  fi
}

# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib when native
# except when LIBPATH=":".
if [ "${LIB_PATH}" != ":" ] ; then
  libs=
  if [ "x${TOOL_LIB}" = "x" ] ; then
    if [ "x${NATIVE}" = "xyes" ] ; then
      libs="${exec_prefix}/${target_alias}/lib"
    fi
  else
    # For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX}
    # and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path,
    # because 64bit libraries may be in both places, depending on
    # cross-development setup method (e.g.: /usr/s390x-linux/lib64
    # vs. /usr/s390-linux/lib64)
    case "${NATIVE}:${LIBPATH_SUFFIX}:${TOOL_LIB}" in
      :* | *::* | *:*:*${LIBPATH_SUFFIX}) ;;
      *) libs="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}" ;;
    esac
    libs="${exec_prefix}/${TOOL_LIB}/lib ${libs}"
  fi
  append_to_lib_path ${libs}
fi

if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
  libs=${NATIVE_LIB_DIRS}
  if [ "x${NATIVE}" = "xyes" ] ; then
    case " ${libs} " in
      *" ${libdir} "*) ;;
      *) libs="${libdir} ${libs}" ;;
    esac
  fi
  append_to_lib_path ${libs}
fi

case :${lib_path1}:${lib_path2}: in
  *:: | ::*) LIB_PATH=${lib_path1}${lib_path2} ;;
  *) LIB_PATH=${lib_path1}:${lib_path2} ;;
esac

LIB_SEARCH_DIRS=`echo ${LIB_PATH} | sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`

# We need it for testsuite.
set $EMULATION_LIBPATH
if [ "x$1" = "x$EMULATION_NAME" ]; then
    test -d tmpdir || mkdir tmpdir
    rm -f tmpdir/libpath.exp
    echo "set libpath \"${LIB_PATH}\"" | sed -e 's/:/ /g' > tmpdir/libpath.exp
fi

# Generate 5 or 6 script files from a master script template in
# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh.  Which one of the 5 or 6
# script files is actually used depends on command line options given
# to ld.  (SCRIPT_NAME was set in the emulparams_file.)
#
# A .x script file is the default script.
# A .xr script is for linking without relocation (-r flag).
# A .xu script is like .xr, but *do* create constructors (-Ur flag).
# A .xn script is for linking with -n flag (mix text and data on same page).
# A .xbn script is for linking with -N flag (mix text and data on same page).
# A .xs script is for generating a shared library with the --shared
#   flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
#   emulation parameters.
# A .xc script is for linking with -z combreloc; it is only generated if
#   $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
#   $SCRIPT_NAME is "elf".
# A .xsc script is for linking with --shared -z combreloc; it is generated
#   if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
#   $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
#   parameters too.

if [ "x$SCRIPT_NAME" = "xelf" ]; then
  GENERATE_COMBRELOC_SCRIPT=yes
fi

SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}

# Determine DATA_ALIGNMENT for the 5 variants, using
# values specified in the emulparams/<script_to_run>.sh file or default.

DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"

LD_FLAG=r
DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
( echo "/* Script for ld -r: link without relocation */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xr

LD_FLAG=u
DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
CONSTRUCTING=" "
( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xu

LD_FLAG=
DATA_ALIGNMENT=${DATA_ALIGNMENT_}
RELOCATING=" "
( echo "/* Default linker script, for normal executables */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.x

LD_FLAG=n
DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
( echo "/* Script for -n: mix text and data on same page */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xn

LD_FLAG=N
DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
( echo "/* Script for -N: mix text and data on same page; don't align data */"
  . ${CUSTOMIZER_SCRIPT}
  . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xbn

if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
  DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
  LD_FLAG=c
  COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
  ( echo "/* Script for -z combreloc: combine and sort reloc sections */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xc
  rm -f ${COMBRELOC}
  LD_FLAG=w
  RELRO_NOW=" "
  COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp
  ( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xw
  rm -f ${COMBRELOC}
  COMBRELOC=
  unset RELRO_NOW
fi

if test -n "$GENERATE_SHLIB_SCRIPT"; then
  LD_FLAG=shared
  DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
  CREATE_SHLIB=" "
  (
    echo "/* Script for ld --shared: link shared library */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xs
  if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
    LD_FLAG=cshared
    DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
    COMBRELOC=ldscripts/${EMULATION_NAME}.xsc.tmp
    ( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
      . ${CUSTOMIZER_SCRIPT}
      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xsc
    rm -f ${COMBRELOC}
    LD_FLAG=wshared
    RELRO_NOW=" "
    COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp
    ( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */"
      . ${CUSTOMIZER_SCRIPT}
      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xsw
    rm -f ${COMBRELOC}
    COMBRELOC=
    unset RELRO_NOW
  fi
  unset CREATE_SHLIB
fi

if test -n "$GENERATE_PIE_SCRIPT"; then
  LD_FLAG=pie
  DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
  CREATE_PIE=" "
  (
    echo "/* Script for ld -pie: link position independent executable */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xd
  if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
    LD_FLAG=cpie
    DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
    COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
    ( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
      . ${CUSTOMIZER_SCRIPT}
      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xdc
    rm -f ${COMBRELOC}
    LD_FLAG=wpie
    RELRO_NOW=" "
    COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp
    ( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */"
      . ${CUSTOMIZER_SCRIPT}
      . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
    ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xdw
    rm -f ${COMBRELOC}
    COMBRELOC=
    unset RELRO_NOW
  fi
  unset CREATE_PIE
fi

if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then
  LD_FLAG=auto_import
  DATA_ALIGNMENT=${DATA_ALIGNMENT_}
  (
    echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data  */"
    . ${CUSTOMIZER_SCRIPT}
    . ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  ) | sed -e '/^ *$/d;s/[ 	]*$//' > ldscripts/${EMULATION_NAME}.xa
fi

case "$COMPILE_IN: $EMULATION_LIBPATH " in
    :*" ${EMULATION_NAME} "*) COMPILE_IN=yes;;
esac

# PR ld/5652:
# Determine if the shell has support for the variable BASH_LINENO.
# When it is the case, it is only available inside functions.
has_lineno()
{
  test "x$BASH_LINENO" != "x"
}

# Enable accruate error source in the compiler error messages, if possible.
if has_lineno; then
  . ${srcdir}/genscrba.sh
else
  source_em()
  {
    . $1
  }
  fragment()
  {
    cat >> e${EMULATION_NAME}.c
  }
fi

# Generate e${EMULATION_NAME}.c.
# Start with an empty file, then the sourced .em script
# can use the "fragment" function to append.
> e${EMULATION_NAME}.c
source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em
Commit	Line	Data
	1	#!/bin/sh
	2	# genscripts.sh - generate the ld-emulation-target specific files
	3	# Copyright 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
	4	#
	5	# This file is part of the Gnu Linker.
	6	#
	7	# This program is free software; you can redistribute it and/or modify
	8	# it under the terms of the GNU General Public License as published by
	9	# the Free Software Foundation; either version 3, or (at your option)
	10	# any later version.
	11	#
	12	# This program is distributed in the hope that it will be useful,
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	# GNU General Public License for more details.
	16	#
	17	# You should have received a copy of the GNU General Public License
	18	# along with GLD; see the file COPYING. If not, write to the Free
	19	# Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
	20	# 02110-1301, USA.
	21	#
	22	# Usage: genscripts_extra.sh \
	23	# srcdir \
	24	# libdir \
	25	# prefix \
	26	# exec_prefix \
	27	# host \
	28	# target \
	29	# target_alias \
	30	# default_emulation \
	31	# native_lib_dirs \
	32	# use_sysroot \
	33	# enable_initfini_array \
	34	# this_emulation \
	35	# optional:
	36	# tool_dir \
	37	# customizer_script
	38	#
	39	# Sample usage:
	40	#
	41	# genscripts_extra.sh \
	42	# /sources/ld \
	43	# /usr/local/lib \
	44	# /usr/local \
	45	# /usr/local \
	46	# sparc-sun-sunos4.1.3 \
	47	# sparc-sun-sunos4.1.3 \
	48	# sparc-sun-sunos4.1.3 \
	49	# sun4 \
	50	# "" \
	51	# no \
	52	# sun3 \
	53	# sparc-sun-sunos4.1.3 \
	54	# sparc.sh
	55	#
	56	# produces the linker scripts:
	57	#
	58	# sun3.x [default linker script]
	59	# sun3.xbn [used when the linker is invoked with "-N"]
	60	# sun3.xn [used when the linker is invoked with "-n"]
	61	# sun3.xr [used when the linker is invoked with "-r"]
	62	# sun3.xu [used when the linker is invoked with "-Ur"]
	63	# and maybe:
	64	# sun3.xc [used when the linker is invoked with "-z combreloc"]
	65	# sun3.xsc [used when the linker is invoked with "--shared"]
	66	# sun3.xdc [used when the linker is invoked with "-pie"]
	67	# sun3.xa [used when the linker is invoked with "--enable-auto-import"]
	68	#
	69	# It also produced the C source file:
	70	#
	71	# em_sun3.c
	72	#
	73	# which is then compiled into the linker.
	74	#
	75	# The linker scripts are created by running the shell script
	76	# /sources/ld/emulparams/sparc.sh to set the value of ${SCRIPT_NAME}
	77	# (and any other variables it wants to). ${SCRIPT_NAME} is then
	78	# invoked with a variable called ${LD_FLAG} to tell it which version
	79	# of the linker script to create.
	80
	81
	82	srcdir=$1
	83	libdir=$2
	84	prefix=$3
	85	exec_prefix=$4
	86	host=$5
	87	target=$6
	88	target_alias=$7
	89	EMULATION_LIBPATH=$8
	90	NATIVE_LIB_DIRS=$9
	91	shift 9
	92	use_sysroot=$1
	93	ENABLE_INITFINI_ARRAY=$2
	94	EMULATION_NAME=$3
	95	TOOL_LIB=$4
	96	CUSTOMIZER_SCRIPT=$5
	97
	98	if [ "x${CUSTOMIZER_SCRIPT}" = "x" ] ; then
	99	CUSTOMIZER_SCRIPT=${EMULATION_NAME}
	100	fi
	101	CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${CUSTOMIZER_SCRIPT}.sh"
	102
	103	# Include the emulation-specific parameters:
	104	. ${CUSTOMIZER_SCRIPT}
	105
	106	if test -d ldscripts; then
	107	true
	108	else
	109	mkdir ldscripts
	110	fi
	111
	112	# Set some flags for the emultempl scripts. USE_LIBPATH will
	113	# be set for any libpath-using emulation; NATIVE will be set for a
	114	# libpath-using emulation where ${host} = ${target}. NATIVE
	115	# may already have been set by the emulparams file, but that's OK
	116	# (it'll just get set to "yes" twice).
	117
	118	case " $EMULATION_LIBPATH " in
	119	" ${EMULATION_NAME} ")
	120	if [ "x${host}" = "x${target}" ] ; then
	121	NATIVE=yes
	122	USE_LIBPATH=yes
	123	elif [ "x${use_sysroot}" = "xyes" ] ; then
	124	USE_LIBPATH=yes
	125	fi
	126	;;
	127	esac
	128
	129	# If the emulparams file sets NATIVE, make sure USE_LIBPATH is set also.
	130	if test "x$NATIVE" = "xyes" ; then
	131	USE_LIBPATH=yes
	132	fi
	133
	134	# Set the library search path, for libraries named by -lfoo.
	135	# If LIB_PATH is defined (e.g., by Makefile) and non-empty, it is used.
	136	# Otherwise, the default is set here.
	137	#
	138	# The format is the usual list of colon-separated directories.
	139	# To force a logically empty LIB_PATH, do LIBPATH=":".
	140	#
	141	# If we are using a sysroot, prefix library paths with "=" to indicate this.
	142	#
	143	# If the emulparams file set LIBPATH_SUFFIX, prepend an extra copy of
	144	# the library path with the suffix applied.
	145
	146	# Paths with LIBPATH_SUFFIX
	147	lib_path1=
	148	# Paths without LIBPATH_SUFFIX
	149	lib_path2=
	150	if [ "${LIB_PATH}" != ":" ] ; then
	151	lib_path2=${LIB_PATH}
	152	fi
	153
	154	# Add args to lib_path1 and lib_path2, discarding any duplicates
	155	append_to_lib_path()
	156	{
	157	if [ $# != 0 ]; then
	158	for lib in "$@"; do
	159	# The "=" is harmless if we aren't using a sysroot, but also needless.
	160	if [ "x${use_sysroot}" = "xyes" ] ; then
	161	lib="=${lib}"
	162	fi
	163	skip_lib=no
	164	if test -n "${LIBPATH_SUFFIX}"; then
	165	case "${lib}" in
	166	*${LIBPATH_SUFFIX})
	167	case :${lib_path1}: in
	168	:${lib}:) ;;
	169	::) lib_path1=${lib} ;;
	170	*) lib_path1=${lib_path1}:${lib} ;;
	171	esac ;;
	172	*)
	173	if test -n "${LIBPATH_SUFFIX_SKIP}"; then
	174	case "${lib}" in
	175	*${LIBPATH_SUFFIX_SKIP}) skip_lib=yes ;;
	176	esac
	177	fi
	178	if test "${skip_lib}" = "no"; then
	179	case :${lib_path1}: in
	180	:${lib}${LIBPATH_SUFFIX}:) ;;
	181	::) lib_path1=${lib}${LIBPATH_SUFFIX} ;;
	182	*) lib_path1=${lib_path1}:${lib}${LIBPATH_SUFFIX} ;;
	183	esac
	184	fi ;;
	185	esac
	186	fi
	187	if test "${skip_lib}" = "no"; then
	188	case :${lib_path1}:${lib_path2}: in
	189	:${lib}:) ;;
	190	*::) lib_path2=${lib} ;;
	191	*) lib_path2=${lib_path2}:${lib} ;;
	192	esac
	193	fi
	194	done
	195	fi
	196	}
	197
	198	# Always search $(tooldir)/lib, aka /usr/local/TARGET/lib when native
	199	# except when LIBPATH=":".
	200	if [ "${LIB_PATH}" != ":" ] ; then
	201	libs=
	202	if [ "x${TOOL_LIB}" = "x" ] ; then
	203	if [ "x${NATIVE}" = "xyes" ] ; then
	204	libs="${exec_prefix}/${target_alias}/lib"
	205	fi
	206	else
	207	# For multilib'ed targets, ensure both ${target_alias}/lib${LIBPATH_SUFFIX}
	208	# and ${TOOL_LIB}/lib${LIBPATH_SUFFIX} are in the default search path,
	209	# because 64bit libraries may be in both places, depending on
	210	# cross-development setup method (e.g.: /usr/s390x-linux/lib64
	211	# vs. /usr/s390-linux/lib64)
	212	case "${NATIVE}:${LIBPATH_SUFFIX}:${TOOL_LIB}" in
	213	:* \| :: \| ::*${LIBPATH_SUFFIX}) ;;
	214	*) libs="${exec_prefix}/${target_alias}/lib${LIBPATH_SUFFIX}" ;;
	215	esac
	216	libs="${exec_prefix}/${TOOL_LIB}/lib ${libs}"
	217	fi
	218	append_to_lib_path ${libs}
	219	fi
	220
	221	if [ "x${LIB_PATH}" = "x" ] && [ "x${USE_LIBPATH}" = xyes ] ; then
	222	libs=${NATIVE_LIB_DIRS}
	223	if [ "x${NATIVE}" = "xyes" ] ; then
	224	case " ${libs} " in
	225	" ${libdir} ") ;;
	226	*) libs="${libdir} ${libs}" ;;
	227	esac
	228	fi
	229	append_to_lib_path ${libs}
	230	fi
	231
	232	case :${lib_path1}:${lib_path2}: in
	233	:: \| ::) LIB_PATH=${lib_path1}${lib_path2} ;;
	234	*) LIB_PATH=${lib_path1}:${lib_path2} ;;
	235	esac
	236
	237	LIB_SEARCH_DIRS=`echo ${LIB_PATH} \| sed -e 's/:/ /g' -e 's/\([^ ][^ ]*\)/SEARCH_DIR(\\"\1\\");/g'`
	238
	239	# We need it for testsuite.
	240	set $EMULATION_LIBPATH
	241	if [ "x$1" = "x$EMULATION_NAME" ]; then
	242	test -d tmpdir \|\| mkdir tmpdir
	243	rm -f tmpdir/libpath.exp
	244	echo "set libpath \"${LIB_PATH}\"" \| sed -e 's/:/ /g' > tmpdir/libpath.exp
	245	fi
	246
	247	# Generate 5 or 6 script files from a master script template in
	248	# ${srcdir}/scripttempl/${SCRIPT_NAME}.sh. Which one of the 5 or 6
	249	# script files is actually used depends on command line options given
	250	# to ld. (SCRIPT_NAME was set in the emulparams_file.)
	251	#
	252	# A .x script file is the default script.
	253	# A .xr script is for linking without relocation (-r flag).
	254	# A .xu script is like .xr, but do create constructors (-Ur flag).
	255	# A .xn script is for linking with -n flag (mix text and data on same page).
	256	# A .xbn script is for linking with -N flag (mix text and data on same page).
	257	# A .xs script is for generating a shared library with the --shared
	258	# flag; it is only generated if $GENERATE_SHLIB_SCRIPT is set by the
	259	# emulation parameters.
	260	# A .xc script is for linking with -z combreloc; it is only generated if
	261	# $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
	262	# $SCRIPT_NAME is "elf".
	263	# A .xsc script is for linking with --shared -z combreloc; it is generated
	264	# if $GENERATE_COMBRELOC_SCRIPT is set by the emulation parameters or
	265	# $SCRIPT_NAME is "elf" and $GENERATE_SHLIB_SCRIPT is set by the emulation
	266	# parameters too.
	267
	268	if [ "x$SCRIPT_NAME" = "xelf" ]; then
	269	GENERATE_COMBRELOC_SCRIPT=yes
	270	fi
	271
	272	SEGMENT_SIZE=${SEGMENT_SIZE-${MAXPAGESIZE-${TARGET_PAGE_SIZE}}}
	273
	274	# Determine DATA_ALIGNMENT for the 5 variants, using
	275	# values specified in the emulparams/<script_to_run>.sh file or default.
	276
	277	DATA_ALIGNMENT_="${DATA_ALIGNMENT_-${DATA_ALIGNMENT-ALIGN(${SEGMENT_SIZE})}}"
	278	DATA_ALIGNMENT_n="${DATA_ALIGNMENT_n-${DATA_ALIGNMENT_}}"
	279	DATA_ALIGNMENT_N="${DATA_ALIGNMENT_N-${DATA_ALIGNMENT-.}}"
	280	DATA_ALIGNMENT_r="${DATA_ALIGNMENT_r-${DATA_ALIGNMENT-}}"
	281	DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
	282
	283	LD_FLAG=r
	284	DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
	285	DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
	286	( echo "/* Script for ld -r: link without relocation */"
	287	. ${CUSTOMIZER_SCRIPT}
	288	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	289	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xr
	290
	291	LD_FLAG=u
	292	DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
	293	CONSTRUCTING=" "
	294	( echo "/* Script for ld -Ur: link w/out relocation, do create constructors */"
	295	. ${CUSTOMIZER_SCRIPT}
	296	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	297	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xu
	298
	299	LD_FLAG=
	300	DATA_ALIGNMENT=${DATA_ALIGNMENT_}
	301	RELOCATING=" "
	302	( echo "/* Default linker script, for normal executables */"
	303	. ${CUSTOMIZER_SCRIPT}
	304	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	305	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.x
	306
	307	LD_FLAG=n
	308	DATA_ALIGNMENT=${DATA_ALIGNMENT_n}
	309	( echo "/* Script for -n: mix text and data on same page */"
	310	. ${CUSTOMIZER_SCRIPT}
	311	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	312	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xn
	313
	314	LD_FLAG=N
	315	DATA_ALIGNMENT=${DATA_ALIGNMENT_N}
	316	( echo "/* Script for -N: mix text and data on same page; don't align data */"
	317	. ${CUSTOMIZER_SCRIPT}
	318	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	319	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xbn
	320
	321	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	322	DATA_ALIGNMENT=${DATA_ALIGNMENT_c-${DATA_ALIGNMENT_}}
	323	LD_FLAG=c
	324	COMBRELOC=ldscripts/${EMULATION_NAME}.xc.tmp
	325	( echo "/* Script for -z combreloc: combine and sort reloc sections */"
	326	. ${CUSTOMIZER_SCRIPT}
	327	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	328	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xc
	329	rm -f ${COMBRELOC}
	330	LD_FLAG=w
	331	RELRO_NOW=" "
	332	COMBRELOC=ldscripts/${EMULATION_NAME}.xw.tmp
	333	( echo "/* Script for -z combreloc -z now -z relro: combine and sort reloc sections */"
	334	. ${CUSTOMIZER_SCRIPT}
	335	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	336	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xw
	337	rm -f ${COMBRELOC}
	338	COMBRELOC=
	339	unset RELRO_NOW
	340	fi
	341
	342	if test -n "$GENERATE_SHLIB_SCRIPT"; then
	343	LD_FLAG=shared
	344	DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
	345	CREATE_SHLIB=" "
	346	(
	347	echo "/* Script for ld --shared: link shared library */"
	348	. ${CUSTOMIZER_SCRIPT}
	349	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	350	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xs
	351	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	352	LD_FLAG=cshared
	353	DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
	354	COMBRELOC=ldscripts/${EMULATION_NAME}.xsc.tmp
	355	( echo "/* Script for --shared -z combreloc: shared library, combine & sort relocs */"
	356	. ${CUSTOMIZER_SCRIPT}
	357	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	358	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xsc
	359	rm -f ${COMBRELOC}
	360	LD_FLAG=wshared
	361	RELRO_NOW=" "
	362	COMBRELOC=ldscripts/${EMULATION_NAME}.xsw.tmp
	363	( echo "/* Script for --shared -z combreloc -z now -z relro: shared library, combine & sort relocs */"
	364	. ${CUSTOMIZER_SCRIPT}
	365	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	366	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xsw
	367	rm -f ${COMBRELOC}
	368	COMBRELOC=
	369	unset RELRO_NOW
	370	fi
	371	unset CREATE_SHLIB
	372	fi
	373
	374	if test -n "$GENERATE_PIE_SCRIPT"; then
	375	LD_FLAG=pie
	376	DATA_ALIGNMENT=${DATA_ALIGNMENT_s-${DATA_ALIGNMENT_}}
	377	CREATE_PIE=" "
	378	(
	379	echo "/* Script for ld -pie: link position independent executable */"
	380	. ${CUSTOMIZER_SCRIPT}
	381	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	382	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xd
	383	if test -n "$GENERATE_COMBRELOC_SCRIPT"; then
	384	LD_FLAG=cpie
	385	DATA_ALIGNMENT=${DATA_ALIGNMENT_sc-${DATA_ALIGNMENT}}
	386	COMBRELOC=ldscripts/${EMULATION_NAME}.xdc.tmp
	387	( echo "/* Script for -pie -z combreloc: position independent executable, combine & sort relocs */"
	388	. ${CUSTOMIZER_SCRIPT}
	389	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	390	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xdc
	391	rm -f ${COMBRELOC}
	392	LD_FLAG=wpie
	393	RELRO_NOW=" "
	394	COMBRELOC=ldscripts/${EMULATION_NAME}.xdw.tmp
	395	( echo "/* Script for -pie -z combreloc -z now -z relro: position independent executable, combine & sort relocs */"
	396	. ${CUSTOMIZER_SCRIPT}
	397	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	398	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xdw
	399	rm -f ${COMBRELOC}
	400	COMBRELOC=
	401	unset RELRO_NOW
	402	fi
	403	unset CREATE_PIE
	404	fi
	405
	406	if test -n "$GENERATE_AUTO_IMPORT_SCRIPT"; then
	407	LD_FLAG=auto_import
	408	DATA_ALIGNMENT=${DATA_ALIGNMENT_}
	409	(
	410	echo "/* Script for ld --enable-auto-import: Like the default script except read only data is placed into .data */"
	411	. ${CUSTOMIZER_SCRIPT}
	412	. ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
	413	) \| sed -e '/^ $/d;s/[ ]$//' > ldscripts/${EMULATION_NAME}.xa
	414	fi
	415
	416	case "$COMPILE_IN: $EMULATION_LIBPATH " in
	417	:" ${EMULATION_NAME} ") COMPILE_IN=yes;;
	418	esac
	419
	420	# PR ld/5652:
	421	# Determine if the shell has support for the variable BASH_LINENO.
	422	# When it is the case, it is only available inside functions.
	423	has_lineno()
	424	{
	425	test "x$BASH_LINENO" != "x"
	426	}
	427
	428	# Enable accruate error source in the compiler error messages, if possible.
	429	if has_lineno; then
	430	. ${srcdir}/genscrba.sh
	431	else
	432	source_em()
	433	{
	434	. $1
	435	}
	436	fragment()
	437	{
	438	cat >> e${EMULATION_NAME}.c
	439	}
	440	fi
	441
	442	# Generate e${EMULATION_NAME}.c.
	443	# Start with an empty file, then the sourced .em script
	444	# can use the "fragment" function to append.
	445	> e${EMULATION_NAME}.c
	446	source_em ${srcdir}/emultempl/${TEMPLATE_NAME-generic}.em