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