dnl -*- Autoconf -*- test for either zlib or bzlib.
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dnl Defines --with-$1 argument, $2 automake conditional,
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dnl and sets AC_DEFINE(USE_$2) and LIBS.
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AC_DEFUN([eu_ZIPLIB], [dnl
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AC_ARG_WITH([[$1]],
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AC_HELP_STRING([--with-[$1]], [support [$1] compression in libdwfl]),,
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[with_[$1]=default])
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if test $with_[$1] != no; then
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AC_SEARCH_LIBS([$4], [$3], [with_[$1]=yes],
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[test $with_[$1] = default ||
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AC_MSG_ERROR([missing -l[$3] for --with-[$1]])])
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fi
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AM_CONDITIONAL([$2], test $with_[$1] = yes)
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if test $with_[$1] = yes; then
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AC_DEFINE(USE_[$2])
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else
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with_[$1]=no
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fi
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AH_TEMPLATE(USE_[$2], [Support $5 decompression via -l$3.])])
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