1#
2# Check for GNU Make.  This is originally from
3# http://www.gnu.org/software/ac-archive/htmldoc/check_gnu_make.html
4#
5AC_DEFUN([AC_CHECK_GNU_MAKE],
6[AC_CACHE_CHECK([for GNU make],[llvm_cv_gnu_make_command],
7dnl 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])
17dnl If there was a GNU version, then set @ifGNUmake@ to the empty string, 
18dnl '#' 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