ld/genscripts.sh - third_party/gdb - Git at Google

 #!/bin/sh
 # genscripts.sh - generate the ld-emulation-target specific files
 # Copyright (C) 2004-2016 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
 #
 # 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

 # Include the emulation-specific parameters:
 CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${EMULATION_NAME}.sh"
 . ${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
	#!/bin/sh
	# genscripts.sh - generate the ld-emulation-target specific files
	# Copyright (C) 2004-2016 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
	#
	# 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

	# Include the emulation-specific parameters:
	CUSTOMIZER_SCRIPT="${srcdir}/emulparams/${EMULATION_NAME}.sh"
	. ${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