diff options
Diffstat (limited to 'doc/make.texi')
-rw-r--r-- | doc/make.texi | 47 |
1 files changed, 33 insertions, 14 deletions
diff --git a/doc/make.texi b/doc/make.texi index b7c54bf..6f59f86 100644 --- a/doc/make.texi +++ b/doc/make.texi @@ -3286,10 +3286,11 @@ main.o : main.c defs.h Thus you no longer have to write all those rules yourself. The compiler will do it for you. -Note that such a prerequisite constitutes mentioning @file{main.o} in a -makefile, so it can never be considered an intermediate file by implicit -rule search. This means that @code{make} won't ever remove the file -after using it; @pxref{Chained Rules, ,Chains of Implicit Rules}. +Note that such a rule constitutes mentioning @file{main.o} in a +makefile, so it can never be considered an intermediate file by +implicit rule search. This means that @code{make} won't ever remove +the file after using it; @pxref{Chained Rules, ,Chains of Implicit +Rules}. @cindex @code{make depend} With old @code{make} programs, it was traditional practice to use this @@ -7918,9 +7919,12 @@ what you want. Certain options specify other activities for @code{make}. @cindex @code{--recon} @cindex @code{-n} -``No-op''. The activity is to print what recipe would be used to make -the targets up to date, but not actually execute it. Some recipes are -still executed, even with this flag (@pxref{MAKE Variable, ,How the @code{MAKE} Variable Works}). +``No-op''. Causes @code{make} to print the recipes that are needed to +make the targets up to date, but not actually execute them. Note that +some recipes are still executed, even with this flag (@pxref{MAKE +Variable, ,How the @code{MAKE} Variable Works}). Also any recipes +needed to update included makefiles are still executed +(@pxref{Remaking Makefiles, ,How Makefiles Are Remade}). @item -t @itemx --touch @@ -7929,9 +7933,10 @@ still executed, even with this flag (@pxref{MAKE Variable, ,How the @code{MAKE} @cindex target, touching @cindex @code{-t} -``Touch''. The activity is to mark the targets as up to date without -actually changing them. In other words, @code{make} pretends to compile -the targets but does not really change their contents. +``Touch''. Marks targets as up to date without actually changing +them. In other words, @code{make} pretends to update the targets but +does not really change their contents; instead only their modified +times are updated. @item -q @itemx --question @@ -7939,9 +7944,9 @@ the targets but does not really change their contents. @cindex @code{-q} @cindex question mode -``Question''. The activity is to find out silently whether the targets -are up to date already; but execute no recipe in either case. In other -words, neither compilation nor output will occur. +``Question''. Silently check whether the targets are up to date, but +do not execute recipes; the exit code shows whether any updates are +needed. @item -W @var{file} @itemx --what-if=@var{file} @@ -8454,6 +8459,14 @@ instead of running their recipes. This is used to pretend that the recipes were done, in order to fool future invocations of @code{make}. @xref{Instead of Execution, ,Instead of Executing Recipes}. +@item --trace +@cindex @code{--trace} +@c Extra blank line here makes the table look better. + +Print the entire recipe to be executed, even for recipes that are +normally silent (due to @code{.SILENT} or @samp{@@}). Also print the +makefile name and linenumber where the recipe was defined. + @item -v @cindex @code{-v} @itemx --version @@ -8986,7 +8999,6 @@ can run @samp{make -p} in a directory with no makefiles. Here is a table of some of the more common variables used as names of programs in built-in rules: -makefiles. @table @code @item AR @@ -9143,6 +9155,13 @@ Extra flags to give to the SCCS @code{get} program. Extra flags to give to compilers when they are supposed to invoke the linker, @samp{ld}. +@item LDLIBS +@vindex LDLIBS +@vindex LOADLIBES +Library flags or names given to compilers when they are supposed to +invoke the linker, @samp{ld}. @code{LOADLIBES} is a deprecated (but +still supported) alternative to @code{LDLIBS}. + @item LFLAGS @vindex LFLAGS Extra flags to give to Lex. |