[BACK]Return to make.1 CVS log [TXT][DIR] Up to [local] / src / usr.bin / make

Diff for /src/usr.bin/make/make.1 between version 1.120 and 1.121

version 1.120, 2015/03/13 19:58:41 version 1.121, 2016/10/23 14:54:14
Line 530 
Line 530 
 .Pc .  .Pc .
 Normally, expansion is not done until the variable is referenced.  Normally, expansion is not done until the variable is referenced.
 .It Ic \&!=  .It Ic \&!=
 Expand the value and pass it to the shell for execution and assign  Perform variable expansion and pass the result to the shell for
 the result to the variable.  execution on the spot, assigning the result to the variable.
 Any newlines in the result are replaced with spaces  Any newlines in the result are also replaced with spaces
 .Po  .Po
 .Bx  .Bx
 extension  extension
 .Pc .  .Pc .
   .It Ic \&!!=
   Perform variable expansion on the spot and pass the result to the shell
   for execution only when the value is needed, assigning the result to
   the variable.
   .Pp
   This is almost identical to
   .Ic \&!=
   except that a shell is only run when the variable value is needed.
   Any newlines in the result are also replaced with spaces
   .Po
   .Ox
   extension
   .Pc .
 .El  .El
 .Pp  .Pp
 Any whitespace before the assigned  Any whitespace before the assigned
Line 557 
Line 570 
 if  if
 .Va A  .Va A
 is not yet defined.  is not yet defined.
   .Pp
   Combinations that do not make sense, such as
   .Bd -literal -offset indent
   A +!!= cmd
   .Ed
   will not work.
 .Pp  .Pp
 Variables are expanded by surrounding the variable name with either  Variables are expanded by surrounding the variable name with either
 curly braces  curly braces
Legend:
Removed from v.1.120  
changed lines
  Added in v.1.121