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41 lines
856 B
Text
41 lines
856 B
Text
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dnl ######################################################################
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dnl Expand the value of a CPP macro into a printable string.
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dnl Takes: header, macro, [action-if-found, [action-if-not-found]]
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dnl It runs the header through CPP looking for a match between the macro
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dnl and a string pattern, and if sucessful, it prints the string value out.
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AC_DEFUN(AMU_EXPAND_CPP_STRING,
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[
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# we are looking for a regexp of a string
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AC_EGREP_CPP(\".*\",
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[$1]
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$2,
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value="notfound"
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AC_TRY_RUN(
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[
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[$1]
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main(argc)
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int argc;
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{
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#ifdef $2
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if (argc > 1)
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printf("%s", $2);
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exit(0);
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#else
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# error no such option $2
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#endif
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exit(1);
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}], value=`./conftest dummy 2>>config.log`, value="notfound", value="notfound")
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,
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value="notfound"
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)
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if test "$value" = notfound
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then
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:
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$4
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else
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:
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$3
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fi
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])
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dnl ======================================================================
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