1: #!/bin/sh
    2: 
    3: # This script is used by test/Makefile.ssl to check whether a sane 'bc'
    4: # is installed.
    5: # ('make test_bn' should not try to run 'bc' if it does not exist or if
    6: # it is a broken 'bc' version that is known to cause trouble.)
    7: #
    8: # If 'bc' works, we also test if it knows the 'print' command.
    9: #
   10: # In any case, output an appropriate command line for running (or not
   11: # running) bc.
   12: 
   13: 
   14: IFS=:
   15: try_without_dir=true
   16: # First we try "bc", then "$dir/bc" for each item in $PATH.
   17: for dir in dummy:$PATH; do
   18:     if [ "$try_without_dir" = true ]; then
   19:       # first iteration
   20:       bc=bc
   21:       try_without_dir=false
   22:     else
   23:       # second and later iterations
   24:       bc="$dir/bc"
   25:       if [ ! -f "$bc" ]; then  # '-x' is not available on Ultrix
   26:         bc=''
   27:       fi
   28:     fi
   29: 
   30:     if [ ! "$bc" = '' ]; then
   31:         failure=none
   32: 
   33: 
   34:         # Test for SunOS 5.[78] bc bug
   35:         "$bc" >tmp.bctest <<\EOF
   36: obase=16
   37: ibase=16
   38: a=AD88C418F31B3FC712D0425001D522B3AE9134FF3A98C13C1FCC1682211195406C1A6C66C6A\
   39: CEEC1A0EC16950233F77F1C2F2363D56DD71A36C57E0B2511FC4BA8F22D261FE2E9356D99AF57\
   40: 10F3817C0E05BF79C423C3F66FDF321BE8D3F18F625D91B670931C1EF25F28E489BDA1C5422D1\
   41: C3F6F7A1AD21585746ECC4F10A14A778AF56F08898E965E9909E965E0CB6F85B514150C644759\
   42: 3BE731877B16EA07B552088FF2EA728AC5E0FF3A23EB939304519AB8B60F2C33D6BA0945B66F0\
   43: 4FC3CADF855448B24A9D7640BCF473E
   44: b=DCE91E7D120B983EA9A104B5A96D634DD644C37657B1C7860B45E6838999B3DCE5A555583C6\
   45: 9209E41F413422954175A06E67FFEF6746DD652F0F48AEFECC3D8CAC13523BDAAD3F5AF4212BD\
   46: 8B3CD64126E1A82E190228020C05B91C8B141F1110086FC2A4C6ED631EBA129D04BB9A19FC53D\
   47: 3ED0E2017D60A68775B75481449
   48: (a/b)*b + (a%b) - a
   49: EOF
   50:         if [ 0 != "`cat tmp.bctest`" ]; then
   51:             failure=SunOStest
   52:         fi
   53: 
   54: 
   55:         if [ "$failure" = none ]; then
   56:             # Test for SCO bc bug.
   57:             "$bc" >tmp.bctest <<\EOF
   58: obase=16
   59: ibase=16
   60: -FFDD63BA1A4648F0D804F8A1C66C53F0D2110590E8A3907EC73B4AEC6F15AC177F176F2274D2\
   61: 9DC8022EA0D7DD3ABE9746D2D46DD3EA5B5F6F69DF12877E0AC5E7F5ADFACEE54573F5D256A06\
   62: 11B5D2BC24947724E22AE4EC3FB0C39D9B4694A01AFE5E43B4D99FB9812A0E4A5773D8B254117\
   63: 1239157EC6E3D8D50199 * -FFDD63BA1A4648F0D804F8A1C66C53F0D2110590E8A3907EC73B4\
   64: AEC6F15AC177F176F2274D29DC8022EA0D7DD3ABE9746D2D46DD3EA5B5F6F69DF12877E0AC5E7\
   65: F5ADFACEE54573F5D256A0611B5D2BC24947724E22AE4EC3FB0C39D9B4694A01AFE5E43B4D99F\
   66: B9812A0E4A5773D8B2541171239157EC6E3D8D50199 - FFBACC221682DA464B6D7F123482522\
   67: 02EDAEDCA38C3B69E9B7BBCD6165A9CD8716C4903417F23C09A85B851961F92C217258CEEB866\
   68: 85EFCC5DD131853A02C07A873B8E2AF2E40C6D5ED598CD0E8F35AD49F3C3A17FDB7653E4E2DC4\
   69: A8D23CC34686EE4AD01F7407A7CD74429AC6D36DBF0CB6A3E302D0E5BDFCD048A3B90C1BE5AA8\
   70: E16C3D5884F9136B43FF7BB443764153D4AEC176C681B078F4CC53D6EB6AB76285537DDEE7C18\
   71: 8C72441B52EDBDDBC77E02D34E513F2AABF92F44109CAFE8242BD0ECBAC5604A94B02EA44D43C\
   72: 04E9476E6FBC48043916BFA1485C6093603600273C9C33F13114D78064AE42F3DC466C7DA543D\
   73: 89C8D71
   74: AD534AFBED2FA39EE9F40E20FCF9E2C861024DB98DDCBA1CD118C49CA55EEBC20D6BA51B2271C\
   75: 928B693D6A73F67FEB1B4571448588B46194617D25D910C6A9A130CC963155CF34079CB218A44\
   76: 8A1F57E276D92A33386DDCA3D241DB78C8974ABD71DD05B0FA555709C9910D745185E6FE108E3\
   77: 37F1907D0C56F8BFBF52B9704 % -E557905B56B13441574CAFCE2BD257A750B1A8B2C88D0E36\
   78: E18EF7C38DAC80D3948E17ED63AFF3B3467866E3B89D09A81B3D16B52F6A3C7134D3C6F5123E9\
   79: F617E3145BBFBE9AFD0D6E437EA4FF6F04BC67C4F1458B4F0F47B64 - 1C2BBBB19B74E86FD32\
   80: 9E8DB6A8C3B1B9986D57ED5419C2E855F7D5469E35E76334BB42F4C43E3F3A31B9697C171DAC4\
   81: D97935A7E1A14AD209D6CF811F55C6DB83AA9E6DFECFCD6669DED7171EE22A40C6181615CAF3F\
   82: 5296964
   83: EOF
   84:             if [ "0
   85: 0" != "`cat tmp.bctest`" ]; then
   86:                 failure=SCOtest
   87:             fi
   88:         fi
   89: 
   90: 
   91:         if [ "$failure" = none ]; then
   92:             # bc works; now check if it knows the 'print' command.
   93:             if [ "OK" = "`echo 'print \"OK\"' | $bc 2>/dev/null`" ]
   94:             then
   95:                 echo "$bc"
   96:             else
   97:                 echo "sed 's/print.*//' | $bc"
   98:             fi
   99:             exit 0
  100:         fi
  101: 
  102:         echo "$bc does not work properly ('$failure' failed).  Looking for another bc ..." >&2
  103:     fi
  104: done
  105: 
  106: echo "No working bc found.  Consider installing GNU bc." >&2
  107: if [ "$1" = ignore ]; then
  108:   echo "cat >/dev/null"
  109:   exit 0
  110: fi
  111: exit 1