#!/bin/bash 
##  change path gfortran lib in freefem install 
## usage : change-dylibgfortran oldlibdir newlibdir  libnam1 libnam2   list of dylyb file pathname to change ...
## F. hecht sep. 2023 on MoOS Ventura , Monterey 
## remark the file $oldlibdir/$libnam1 , ... must exist ... 
olddir=$1
shift
newdir=$1
shift
lib1=$1
shift
lib2=$1
shift
lib3=$1
shift
fi

if test -f "$olddir/$lib1" -a  -f "$olddir/$lib2" -a  -f "$olddir/$lib3" \
    -a  -f "$newdir/$lib1" -a  -f "$newdir/$lib2" -a  -f "$newdir/$lib3" ; then 
for ff in $@; do
ch=0
for lib in $lib1 $lib2 $lib3; do 
  old=$olddir/$lib	
  new=$newdir/$lib	
  nnl=`otool -L $ff|grep $lib|awk '{print $1}'`
  case $nnl in
	  /* ) old=$nnl
  esac
#  echo "old .. " $old  $nnl
#  otool -L $ff|awk "/$lib/ "'{print $1}'
  nn=`otool -L $ff|grep $old|wc -l`
#  echo "nn=" $nn $nnl $old
  otool -L $ff| grep brew	  
  if test $nn -ne 0  ; then
#    echo ..change $old to $new in $ff
    ch=1
    echo change  $old to  $new1 in $ff
    install_name_tool -change $old $new $ff
  fi
  done
  if test $ch -eq 1  ; then
    codesign  --remove-signature $ff
    codesign -s -  $ff
  fi
  done 
else
	echo "$olddir/$lib1"  "$olddir/$lib2"  "$olddir/$lib3"  do some not exist!
	echo "$newdir/$lib1"  "$newdir/$lib2"  "$newdir/$lib3" do not exist!
fi