#!/bin/sh

ld_hidden_check() {
  gcc_cv_ld_hidden=yes
#  ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q`
  ld_ver="$1"
  ld_vers=`echo $ld_ver | sed -n \
	-e 's,^.*[	 ]\([0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
	-e 's,^.*[	 ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
	-e 's,^.*[	 ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)$,\1,p' \
	-e 's,^.*[	 ]\([0-9][0-9]*\.[0-9][0-9]*\)[	 ].*$,\1,p' \
	-e 's,^.*[	 ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[	 ].*$,\1,p' \
	-e 's,^.*[ 	 ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[ 	].*$,\1,p' \
	-e 's,^.*[	 ]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\)[	 -].*$,\1,p'`
    ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'`
    ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'`
    ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'`
    ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'`
    if test 0"$ld_date" -lt 20020404; then
      if test -n "$ld_date"; then
	# If there was date string, but was earlier than 2002-04-04, fail
	gcc_cv_ld_hidden=no
      elif test -z "$ld_vers"; then
	# If there was no date string nor ld version number, something is wrong
	gcc_cv_ld_hidden=no
      else
	test -z "$ld_vers_patch" && ld_vers_patch=0
	if test "$ld_vers_major" -lt 2; then
	  gcc_cv_ld_hidden=no
	elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then
	  gcc_cv_ld_hidden="no"
	elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then
	  gcc_cv_ld_hidden=no
	fi
      fi
    fi

  echo "ld version \"$ld_ver\" supports hidden: $gcc_cv_ld_hidden"
}

ld_hidden_check "GNU ld version 2.17"
ld_hidden_check "GNU ld version 2.17.atmel.0.0.99"
ld_hidden_check "GNU ld version 2.15.90.0.1.1"