Make file echo displaying PATH string

Question

I am trying to force make file to display next string    Please execute next commands  setenv PATH  usr local greenhills mips5 linux86  PATH    The problem is with   PATH   Command   echo  setenv PATH  usr local greenhills mips5 linux86  PATH    cause a result   setenv PATH  usr local greenhills mips5 linux86 ATH    any combinations of escape characters  quotes     shell echo   didn t get required results     Any suggestions

User · Answer

The make uses the   for its own variable expansions  E g  single character variable  A or variable with a long name -   VAR  and   VAR    To put the   into a command  use the     for example   all     echo  Please execute next commands      echo  setenv PATH  usr local greenhills mips5 linux86   PATH    Also note that to make the    and     double and single quoting  do not play any role and they are passed verbatim to the shell   Remove the   sign to see what make sends to shell   To prevent the shell from expanding  PATH  second line uses the

User · Answer

In the manual for GNU make  they talk about this specific example when describing the value function      The value function provides a way for you to use the value of a   variable without having it expanded  Please note that this does not   undo expansions which have already occurred  for example if you create   a simply expanded variable its value is expanded during the   definition  in that case the value function will return the same   result as using the variable directly       The syntax of the value function is      value variable        Note that variable is the name of a variable  not a reference to that variable  Therefore you would not normally use   a         or parentheses when writing it   You can  however  use a   variable reference in the name if you want the name not to be a   constant        The result of this function is a string containing the value of   variable  without any expansion occurring  For example  in this   makefile    FOO    PATH   all            echo   FOO            echo   value FOO        The first output line would be ATH  since the     P    would be expanded as a make variable  while the second   output line would be the current value of your  PATH environment   variable  since the value function avoided the expansion

[makefile] Make file echo displaying "$PATH" string

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