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##### http://autoconf-archive.cryp.to/ac_python_module.html
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#
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# SYNOPSIS
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#
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#   AC_PYTHON_MODULE(modname[, fatal])
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#
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# DESCRIPTION
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#
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#   Checks for Python module.
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#
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#   If fatal is non-empty then absence of a module will trigger an
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#   error.
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#
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# LAST MODIFICATION
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#
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#   2007-01-09
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#
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# COPYLEFT
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#
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#   Copyright (c) 2007 Andrew Collier <colliera@ukzn.ac.za>
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#
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#   Copying and distribution of this file, with or without
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#   modification, are permitted in any medium without royalty provided
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#   the copyright notice and this notice are preserved.
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AC_DEFUN([AC_PYTHON_MODULE],[
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    if test -z $PYTHON;
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    then
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        PYTHON="python"
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    fi
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    PYTHON_NAME=`basename $PYTHON`
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    AC_MSG_CHECKING($PYTHON_NAME module: $1)
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	$PYTHON -c "import $1" 2>/dev/null
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	if test $? -eq 0;
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	then
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		AC_MSG_RESULT(yes)
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		eval AS_TR_CPP(HAVE_PYMOD_$1)=yes
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	else
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		AC_MSG_RESULT(no)
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		eval AS_TR_CPP(HAVE_PYMOD_$1)=no
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		#
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		if test -n "$2"
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		then
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			AC_MSG_ERROR(failed to find required module $1)
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			exit 1
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		fi
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	fi
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])