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#!/bin/sh 
 
## 
## We attempt to locate a working m4 
## 
M4=m4 
 
IFS="${IFS=   }"; save_ifs="$IFS"; IFS="${IFS}:" 
HAVEGNU=no 
HAVEWORKS=no 
 
# GNU m4 is named gm4 on FreeBSD and Solaris 10. 
PATHS=$PATH:/usr/sfw/bin:/opt/sfw/bin:/opt/csw/bin:/opt/gnu/bin:/usr/gnu/bin 
for m4 in gm4 m4 
do 
  for d in $PATHS; do 
    test -z "$d" && ac_dir=. 
 
    if test -f $d/$m4; then 
      # "m4.c 1.9 89/07/10 SMI" (of SunOS 4.1.1_U1) is broken and hangs 
      # during the quote test. 
      m4_ident="`strings $d/$m4|grep '@(#)m4.c' 2>/dev/null`" 
      if test "x$m4_ident" '!=' "x" && \ 
         echo "$m4_ident"|egrep 'm4.c 1\.[0-9] .* SMI' >/dev/null 2>&1; then 
        works=no 
      elif echo 'divert(-1)changequote([[,]])define(DOIT,ifelse([foo],foo,[DOIT($1)]))DOIT([[m4exit(1)]])' | $d/$m4 >/dev/null; then 
        works=yes 
      else 
        works=no 
      fi 
 
      # FIXME: Ought to check for "pushed back more than 4096 chars". 
 
      case `echo __gnu__ | $d/$m4` in 
        __gnu__) isgnu=no ;; 
        *) isgnu=yes ;; 
      esac 
 
      case "$HAVEGNU-$isgnu:$HAVEWORKS-$works" in 
        *:no-yes|no-yes:*) 
          M4=$d/$m4 
          HAVEGNU=$isgnu 
          HAVEWORKS=$works 
        ;; 
      esac 
    fi 
    if test "$HAVEGNU:$HAVEWORKS" = "yes:yes"; then 
      break 
    fi 
  done 
  if test "$HAVEGNU:$HAVEWORKS" = "yes:yes"; then 
    break 
  fi 
done 
 
IFS="$save_ifs" 
( 
cat <<EOF 
divert(-1) 
 
dnl generates a script that is supposed to test Pike 
dnl note that not everything is tested yet, you are welcome to 
dnl submit more tests. 
 
changequote([[,]]) 
 
define(DOIT,ifelse([foo],foo,[DOIT(\$1)]))dnl 
DOIT([[errprint([This m4 cannot handle quote strings with more than one character 
Please consider installing GNU m4.]) 
m4exit(1) 
]])dnl 
 
changecom 
 
define(real_checkarg,[[dnl 
ifelse(index([[\$3]],format([[%c]],255)),-1,,[[dnl 
format([%c],255) 
errprint(__file__:__line__: [[ 
Argument \$2 to \$1 contains the character ]]format([[%c]],255)[[, 
which is treated as EOF by some m4 implementations. 
]])m4exit(1)]])dnl 
ifelse(eval(len([[\$3]])>4096),0,,[[dnl 
errprint(__file__:__line__: [[ 
Argument \$2 to \$1 has ]]len([[\$3]])[[ characters, 
some m4 implementations only allow 4096. 
]])m4exit(1)]])dnl 
ifelse(index([[\$3]],[[ 
.... 
]]),-1,,[[dnl 
errprint(__file__:__line__: [[ 
Argument \$2 to \$1 contains the "...." sequence, used internally by 
the testsuite. 
]])m4exit(1)]])dnl 
]]) 
 
ifdef([[__gnu__]], 
[[define(checkarg,[[[[real_checkarg([[\$1]],\$2,[[\$\$2]])]]]])]], 
[[define(checkarg,)]] 
) 
 
define(SEPARATOR,[[....]]) 
define(CONDITION,[[]]) 
 
define(DOTEST,dnl 
checkarg([[DOTEST]],1)dnl 
checkarg([[DOTEST]],2)dnl 
[[dnl 
divert(0)dnl 
define([[TESTNO]],incr(TESTNO))dnl 
CONDITION()__file__:__line__: test TESTNO, expected result: [[\$1]] 
[[\$2]] 
SEPARATOR 
divert(-1)dnl]]) 
 
define(START_MARKER,[[divert(0)START [[\$1]] 
divert(-1)]]) 
define(END_MARKER,[[divert(0)END 
divert(-1)]]) 
 
define(ignore_warning, dnl 
checkarg([[ignore_warning]],1)dnl 
checkarg([[ignore_warning]],2)dnl 
[[DOTEST(PUSH_WARNING,dnl 
mixed a() { return [[\$1]]; }) 
\$2 
DOTEST(POP_WARNING,dnl 
mixed a() { return [[\$1]]; }) 
]]) 
 
define(test_any, [[DOTEST(EQ,dnl 
mixed a() { [[\$1]]; } 
mixed b() { return [[\$2]]; })]]) 
 
define(test_any_equal, [[DOTEST(EQUAL,dnl 
mixed a() { [[\$1]]; } 
mixed b() { return [[\$2]]; })]]) 
 
define(test_eq,[[DOTEST(EQ,dnl 
mixed a() { return [[\$1]]; } 
mixed b() { return [[\$2]]; })]]) 
 
define(test_equal,[[DOTEST(EQUAL,dnl 
mixed a() { return [[\$1]]; } 
mixed b() { return [[\$2]]; })]]) 
 
define(test_do,[[DOTEST(RUN,dnl 
mixed a() { [[\$1]]; })]]) 
 
define(test_true, [[DOTEST(TRUE,dnl 
mixed a() { return [[\$1]]; })]]) 
 
define(test_false, [[DOTEST(FALSE,dnl 
mixed a() { return [[\$1]]; })]]) 
 
define(test_compile,[[DOTEST(COMPILE,dnl 
void x() { [[\$1]] ; } )]]) 
 
define(test_compile_any,[[DOTEST(COMPILE,dnl 
[[\$1]] )]]) 
 
define(test_compile_error,[[DOTEST(COMPILE_ERROR,dnl 
mixed a() { [[\$1]];})]]) 
 
define(test_compile_error_any,[[DOTEST(COMPILE_ERROR,dnl 
[[\$1]])]]) 
 
define(test_compile_warning,[[DOTEST(COMPILE_WARNING,dnl 
mixed a() { [[\$1]];})]]) 
 
define(test_eval_error,[[DOTEST(EVAL_ERROR,dnl 
mixed a() { [[\$1]]; })]]) 
 
define(test_define_program,[[DOTEST(RUN,dnl 
void a() { class [[\$1]] { [[\$2]] } 
           add_constant("[[\$1]]", [[\$1]]); 
})]]) 
 
define(test_program, [[DOTEST(TRUE,dnl 
[[\$1]])]]) 
 
define(test_program_eq, [[DOTEST(EQ,dnl 
[[\$1]] 
mixed b() {return [[\$2]];})]]) 
 
define(test_program_equal, [[DOTEST(EQUAL,dnl 
[[\$1]] 
mixed b() {return [[\$2]];})]]) 
 
define(test_tests, [[DOTEST(RUNCT,dnl 
[[\$1]])]]) 
 
define(cond_begin,dnl 
checkarg([[cond]],1)dnl 
[[ 
define([[CONDITION]],[[COND \$1 
]]) 
]]) 
 
define(cond_end,dnl 
[[ 
define([[CONDITION]],[[]]) 
]]) 
 
define(cond,dnl 
checkarg([[cond]],2)dnl 
[[ 
cond_begin([[\$1]]) 
\$2 
cond_end 
]]) 
 
define(cond_resolv,[[cond([[master()->resolv(dnl 
  String.trim("\$1"))]],[[\$2]])]]) 
define(ifefun,[[cond([[all_constants()->\$1]],[[\$2]])]]) 
 
define(TESTNO,0) 
 
// testing < > <= >= 
define([[test_cmp]],[[ 
test_true(\$1<\$2) 
test_false(\$1>\$2) 
test_true(\$2>\$1) 
test_false(\$2<\$1) 
test_true(\$1<=\$2) 
test_false(\$1>=\$2) 
test_true(\$2>=\$1) 
test_false(\$2<=\$1) 
test_true(\$2<=\$2) 
test_true(\$1>=\$1) ]]) 
 
define([[test_cmp3]],[[ 
test_cmp(\$1,\$2) 
test_cmp(\$2,\$3) 
test_cmp(\$1,\$3) 
 
 test_true(\`<(\$1,\$2,\$3)) 
test_false(!\`<(\$1,\$2,\$3)) 
test_false(\`<(\$1,\$3,\$2)) 
 test_true(!\`<(\$1,\$3,\$2)) 
test_false(\`<(\$2,\$3,\$1)) 
test_false(\`<(\$2,\$1,\$3)) 
test_false(\`<(\$3,\$1,\$2)) 
test_false(\`<(\$3,\$2,\$1)) 
test_false(\`<(\$3,\$2,\$2,\$1)) 
 
 test_true(\`<=(\$1,\$2,\$3)) 
test_false(!\`<=(\$1,\$2,\$3)) 
test_false(\`<=(\$1,\$3,\$2)) 
test_false(\`<=(\$2,\$3,\$1)) 
test_false(\`<=(\$2,\$1,\$3)) 
 test_true(!\`<=(\$2,\$1,\$3)) 
test_false(\`<=(\$3,\$1,\$2)) 
test_false(\`<=(\$3,\$2,\$1)) 
 test_true(\`<=(\$1,\$1,\$2,\$2,\$3,\$3)) 
 
test_false(\`>(\$1,\$2,\$3)) 
test_false(\`>(\$1,\$3,\$2)) 
test_false(\`>(\$2,\$3,\$1)) 
test_false(\`>(\$2,\$1,\$3)) 
test_false(\`>(\$3,\$1,\$2)) 
 test_true(\`>(\$3,\$2,\$1)) 
test_false(\`>(\$3,\$2,\$2,\$1)) 
 
test_false(\`>=(\$1,\$2,\$3)) 
test_false(\`>=(\$1,\$3,\$2)) 
test_false(\`>=(\$2,\$3,\$1)) 
test_false(\`>=(\$2,\$1,\$3)) 
test_false(\`>=(\$3,\$1,\$2)) 
 test_true(!\`>=(\$3,\$1,\$2)) 
 test_true(\`>=(\$3,\$2,\$1)) 
 test_true(\`>=(\$3,\$3,\$2,\$2,\$1,\$1)) 
test_false(!\`>=(\$3,\$3,\$2,\$2,\$1,\$1)) 
 
test_equal(min(\$2,\$1,\$3), \$1) 
test_equal(max(\$2,\$1,\$3), \$3) 
 ]]) 
 
include($1) 
EOF 
) | (shift ; $M4 -d "$@" - ) 
exit $?