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# Check for GNU Make. This is originally from
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# http://www.gnu.org/software/ac-archive/htmldoc/check_gnu_make.html
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AC_DEFUN([AC_CHECK_GNU_MAKE],
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[AC_CACHE_CHECK([for GNU make],[llvm_cv_gnu_make_command],
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dnl Search all the common names for GNU make
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[llvm_cv_gnu_make_command=''
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for a in "$MAKE" make gmake gnumake ; do
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if test -z "$a" ; then continue ; fi ;
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if ( sh -c "$a --version" 2> /dev/null | grep GNU 2>&1 > /dev/null )
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llvm_cv_gnu_make_command=$a ;
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dnl If there was a GNU version, then set @ifGNUmake@ to the empty string,
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if test "x$llvm_cv_gnu_make_command" != "x" ; then
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AC_MSG_RESULT("Not found");