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Diffstat (limited to 'make.texinfo')
| -rw-r--r-- | make.texinfo | 66 |
1 files changed, 44 insertions, 22 deletions
diff --git a/make.texinfo b/make.texinfo index 9e22260..b3a0813 100644 --- a/make.texinfo +++ b/make.texinfo @@ -6,9 +6,9 @@ @smallbook @c %**end of header -@set EDITION 0.39 +@set EDITION 0.40 @set VERSION 3.63 Beta -@set UPDATED 6 January 1993 +@set UPDATED 11 January 1993 @set UPDATE-MONTH January 1993 @c finalout @@ -350,10 +350,14 @@ Implicit Rule for Archive Member Targets @comment node-name, next, previous, up @chapter Overview of @code{make} -The @code{make} utility automatically determines which pieces of a -large program need to be recompiled, and issues commands to -recompile them. This manual describes GNU @code{make}, which was -implemented by Richard Stallman and Roland McGrath. +The @code{make} utility automatically determines which pieces of a large +program need to be recompiled, and issues commands to recompile them. +This manual describes GNU @code{make}, which was implemented by Richard +Stallman and Roland McGrath. GNU @code{make} conforms to section 6.2 of +@cite{IEEE Standard 1003.2-1992} (POSIX.2). +@cindex POSIX +@cindex IEEE Standard 1003.2 +@cindex standards conformance Our examples show C programs, since they are most common, but you can use @code{make} with any programming language whose compiler can be run with a @@ -1139,6 +1143,9 @@ makefile as has been traditionally done with other versions of @cindex @code{-I} @cindex @code{--include-dir} +@findex /usr/gnu/include +@findex /usr/local/include +@findex /usr/include If the specified name does not start with a slash, and the file is not found in the current directory, several other directories are searched. First, any directories you have specified with the @samp{-I} or @@ -1148,13 +1155,16 @@ Then the following directories (if they exist) are searched, in this order: @file{@var{prefix}/include} (normally @file{/usr/local/include}) @file{/usr/gnu/include}, -@file{/usr/local/include}, @file{/usr/include}. If an included makefile -cannot be found in any of these directories, a warning message is -generated, but it is not a fatal error; processing of the makefile -containing the @code{include} continues.@refill -@findex /usr/gnu/include -@findex /usr/local/include -@findex /usr/include +@file{/usr/local/include}, @file{/usr/include}. + +If an included makefile cannot be found in any of these directories, a +warning message is generated, but it is not an immediately fatal error; +processing of the makefile containing the @code{include} continues. +Once it has finished reading makefiles, @code{make} will try to remake +any that are out of date or don't exist. +@xref{Remaking Makefiles, ,How Makefiles Are Remade}. +Only after it has tried to find a way to remake a makefile and failed, +will @code{make} diagnose the missing makefile as a fatal error. @node MAKEFILES Variable, Remaking Makefiles, Include, Makefiles @section The Variable @code{MAKEFILES} @@ -2133,10 +2143,18 @@ these commands executed on its behalf. @xref{Search Algorithm, @cindex precious targets @cindex preserving with @code{.PRECIOUS} -The targets which @code{.PRECIOUS} depends on are given the following special -treatment: if @code{make} is killed or interrupted during the +The targets which @code{.PRECIOUS} depends on are given the following +special treatment: if @code{make} is killed or interrupted during the execution of their commands, the target is not deleted. @xref{Interrupts, ,Interrupting or Killing @code{make}}. +Also, if the target is an intermediate file, it will not be deleted +after it is no longer needed, as is normally done. +@xref{Chained Rules, ,Chains of Implicit Rules}. + +You can also list the target pattern of an implicit rule (such as +@samp{%.o}) as a dependency file of the special target @code{.PRECIOUS} +to preserve intermediate files whose target patterns match that file's +name. @findex .IGNORE @item .IGNORE @@ -6611,10 +6629,11 @@ attaches to every file made by this pattern rule. These unvarying dependencies are useful occasionally. @c !!! The following sentence should be rewritten. --bob -It is allowed for a pattern rule to have no dependencies that contain -@samp{%} or to have no dependencies at all. This is effectively a general -wildcard. It provides a way to make any file that matches the target pattern. -@xref{Last Resort}. +@c rewritten by roland; does it win now? +A pattern rule need not have any dependencies that contain @samp{%}, or +in fact any dependencies at all. Such a rule is effectively a general +wildcard. It provides a way to make any file that matches the target +pattern. @xref{Last Resort}. @c !!! The end of of this paragraph should be rewritten. --bob Pattern rules may have more than one target. Unlike normal rules, this @@ -6721,7 +6740,10 @@ Here is a table of automatic variables: @vindex @@ @r{(automatic variable)} @item $@@ The file name of the target of the rule. If the target is an archive -member, then @samp{$@@} is the name of the archive file. +member, then @samp{$@@} is the name of the archive file. In a pattern +rule that has multiple targets (@pxref{Pattern Intro, ,Introduction to +Pattern Rules}), @samp{$@@} is the name of whichever target caused the +rule's commands to be run. @vindex $% @vindex % @r{(automatic variable)} @@ -7660,7 +7682,7 @@ Various new built-in implicit rules. @xref{Catalogue of Rules, ,Catalogue of Implicit Rules}. @end itemize -@node Missing, Quick Reference, Features, Top +@node Missing, Makefile Conventions, Features, Top @chapter Incompatibilities and Missing Features @cindex incompatibilities @cindex missing features @@ -7756,7 +7778,7 @@ using EFL, we will gladly add them. @comment included by standards.texi. @include make-stds.texi -@node Quick Reference, Complex Makefile, Missing, Top +@node Quick Reference, Complex Makefile, Makefile Conventions, Top @appendix Quick Reference This appendix summarizes the directives, text manipulation functions, |