1 # 2 # Check for GNU Make. This is originally from 3 # http://www.gnu.org/software/ac-archive/htmldoc/check_gnu_make.html 4 # 5 AC_DEFUN([AC_CHECK_GNU_MAKE], 6 [AC_CACHE_CHECK([for GNU make],[llvm_cv_gnu_make_command], 7 dnl Search all the common names for GNU make 8 [llvm_cv_gnu_make_command='' 9 for a in "$MAKE" make gmake gnumake ; do 10 if test -z "$a" ; then continue ; fi ; 11 if ( sh -c "$a --version" 2> /dev/null | grep GNU 2>&1 > /dev/null ) 12 then 13 llvm_cv_gnu_make_command=$a ; 14 break; 15 fi 16 done]) 17 dnl If there was a GNU version, then set @ifGNUmake@ to the empty string, 18 dnl '#' otherwise 19 if test "x$llvm_cv_gnu_make_command" != "x" ; then 20 ifGNUmake='' ; 21 else 22 ifGNUmake='#' ; 23 AC_MSG_RESULT("Not found"); 24 fi 25 AC_SUBST(ifGNUmake) 26 ]) 27
