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@@ -0,0 +1,69 @@
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+FL=succes
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+TRIES='-ll and -lln'
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+case X$# in
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+X0)
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+ myecho "trying to find your lex library ..."
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+ cat > x.l <<'EOF'
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+%%
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+[A-Z] putchar(yytext[0]+'a'-'A');
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+EOF
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+ if lex x.l > /dev/null 2>&1
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+ then :
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+ else myecho "Sorry, your lex does not seem to work"
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+ exit 2
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+ fi
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+ cat > trylib <<'EOF'
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+if cc $1 lex.yy.c > /dev/null 2>&1
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+then
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+ rm -f lex.yy.* a.out
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+ exit 0
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+else
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+ exit 1
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+fi
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+EOF
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+ if sh trylib -ll
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+ then
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+ LEX=-ll
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+ elif sh trylib -ln
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+ then
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+ LEX=-lln
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+ else
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+ FL=fail
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+ fi
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+ ;;
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+*) if sh trylib $1
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+ then
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+ LEX=$1
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+ else
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+ TRIES="$2 and $1"
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+ FL=fail
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+ fi
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+ ;;
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+esac
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+case X$FL in
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+Xfail) myecho 'What option do I have to give to cc to get the LEX library?'
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+ myecho "I tried " $TRIES "but these don't seem to work."
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+ myecho -n 'LEX library option: '
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+ if read ANSWER
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+ then :
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+ else myecho "Sorry, got EOF while reading your answer"
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+ exit 9
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+ fi
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+ exec $0 $ANSWER "$TRIES"
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+ ;;
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+Xsucces)
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+ for i in ../util/opt ../util/cgg ../util/ncgg ../lang/occam/comp
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+ do
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+ ( cd $i
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+ ed - Makefile << EOF
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+/^LEXLIB/c
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+LEXLIB = $LEX
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+.
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+w
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+q
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+EOF
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+ )
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+ done
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+ ;;
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+esac
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+rm -f x.l trylib
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