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make.texinfo
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make.texinfo
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@ -8,8 +8,8 @@
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@set EDITION 0.37
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@set VERSION 3.63 Beta
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@set UPDATED 15 September 1992
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@set UPDATE-MONTH September 1992
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@set UPDATED 13 November 1992
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@set UPDATE-MONTH November 1992
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@c finalout
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@ -100,7 +100,6 @@ for @code{make} Version @value{VERSION}.@refill
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This manual describes @code{make} and contains the following chapters:@refill
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@end ifinfo
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@c !!!!! Edit descriptions.
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@menu
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* Overview:: Overview of @code{make}.
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* Copying:: Your rights and freedoms.
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@ -2669,9 +2668,8 @@ how the sub-@code{make} relates to the top-level @code{make}.
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* MAKE Variable:: The special effects of using @samp{$(MAKE)}.
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* Variables/Recursion:: How to communicate variables to a sub-@code{make}.
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* Options/Recursion:: How to communicate options to a sub-@code{make}.
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* -w Option:: How to use the @samp{-w} or @samp{--print-directory}
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option to debug
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makefiles with recursive @code{make} commands.
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* -w Option:: How the @samp{-w} or @samp{--print-directory} option
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helps debug use of recursive @code{make} commands.
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@end menu
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@node MAKE Variable, Variables/Recursion, , Recursion
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@ -4123,21 +4121,23 @@ $(patsubst %.c,%.o,x.c.c bar.c)
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@noindent
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produces the value @samp{x.c.o bar.o}.
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@c !!!! This needs more work.
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There are shorthand representations for the @code{patsubst} function.
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Substitution references (@pxref{Substitution Refs, ,Substitution
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References}) are a simpler way to get the effect of the @code{patsubst}
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function:
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@example
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$(@var{var}:%@var{pattern}=@var{replacement})
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$(@var{var}:@var{pattern}=@var{replacement})
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@end example
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@noindent
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is equivalent to
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@example
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$(patsubst %@var{pattern},@var{replacement},$(@var{var})
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$(patsubst @var{pattern},@var{replacement},$(@var{var}))
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@end example
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and
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The second shorthand simplifies one of the most common uses of
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@code{patsubst}: replacing the suffix at the end of file names.
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@example
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$(@var{var}:@var{suffix}=@var{replacement})
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@ -4150,6 +4150,27 @@ is equivalent to
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$(patsubst %@var{suffix},%@var{replacement},$(@var{var}))
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@end example
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@noindent
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For example, you might have a list of object files:
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@example
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objects = foo.o bar.o baz.o
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@end example
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@noindent
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To get the list of corresponding source files, you could simply write:
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@example
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$(objects:.o=.c)
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@end example
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@noindent
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instead of using the general form:
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@example
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$(patsubst %.o,%.c,$(objects))
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@end example
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@item $(strip @var{string})
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@findex strip
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Removes leading and trailing whitespace from @var{string} and replaces
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@ -4375,7 +4396,7 @@ $(basename src/foo.c hacks)
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@noindent
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produces the result @samp{src/foo hacks}.
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@c !!! plural convention with dots (be consistent)
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@c plural convention with dots (be consistent)
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@item $(addsuffix @var{suffix},@var{names}@dots{})
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@findex addsuffix
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The argument @var{names} is regarded as a series of names, separated
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@ -6555,6 +6576,7 @@ main use is as subroutine libraries for linking.
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@menu
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* Archive Members:: Archive members as targets.
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* Archive Update:: The implicit rule for archive member targets.
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* !!! :: the .X.a kludge
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@end menu
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@node Archive Members, Archive Update, , Archives
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@ -6730,7 +6752,7 @@ Execution of recursive commands to run @code{make} via the variable
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@code{MAKE} even if @samp{-n}, @samp{-q} or @samp{-t} is specified.
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@xref{Recursion, ,Recursive Use of @code{make}}.
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@c !!!! what about the kludge for this???
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@c !!! what about the kludge for this???
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@item
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Support for suffix @samp{.a} in suffix rules. In GNU @code{make},
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this is actually implemented by chaining with one pattern rule for
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