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authorRoland McGrath <roland@redhat.com>1993-04-11 22:26:07 +0000
committerRoland McGrath <roland@redhat.com>1993-04-11 22:26:07 +0000
commitae7b53245a3a37d5fe464a44d46139571f66586b (patch)
tree98f377995db9d1618b71b15dd2076d06a994fbfb
parent542a0f8112637040b64292734c9ef4701fb881e8 (diff)
downloadgunmake-ae7b53245a3a37d5fe464a44d46139571f66586b.tar.gz
Formerly make.texinfo.~87~
-rw-r--r--make.texinfo21
1 files changed, 19 insertions, 2 deletions
diff --git a/make.texinfo b/make.texinfo
index 7d24322..61df072 100644
--- a/make.texinfo
+++ b/make.texinfo
@@ -8,8 +8,8 @@
@set EDITION 0.41
@set VERSION 3.64 Beta
-@set UPDATED 8 March 1993
-@set UPDATE-MONTH March 1993
+@set UPDATED 11 April 1993
+@set UPDATE-MONTH April 1993
@c finalout
@@ -3057,6 +3057,23 @@ so the sub-@code{make} gets them too. Thus, if you do @samp{make
CFLAGS=-O}, so that all C compilations will be optimized, the
sub-@code{make} is run with @samp{cd subdir; /bin/make CFLAGS=-O}.@refill
+@vindex MAKE_COMMAND
+@vindex MAKEOVERRIDES
+The @code{MAKE} variable actually just refers to two other variables
+which contain these special values. In fact, @code{MAKE} is always
+defined as @samp{$(MAKE_COMMAND) $(MAKEOVERRIDES)}. The variable
+@code{MAKE_COMMAND} is the file name with which @code{make} was invoked
+(such as @file{/bin/make}, above). The variable @code{MAKEOVERRIDES}
+contains definitions for the variables defined on the command line; in
+the above example, its value is @samp{CFLAGS=-O}. If you @emph{do not}
+want these variable definitions done in all recursive @code{make}
+invocations, you can redefine the @code{MAKEOVERRIDES} variable to
+remove them. You do this in any of the normal ways for defining
+variables: in a makefile (@pxref{Setting Variables}); on the command
+line with an argument like @samp{MAKEOVERRIDES=}
+(@pxref{Overriding Variables}); or with an environment variable
+(@pxref{Environment, ,Variables from the Environment}).
+
As a special feature, using the variable @code{MAKE} in the commands of
a rule alters the effects of the @samp{-t} (@samp{--touch}), @samp{-n}
(@samp{--just-print}), or @samp{-q} (@w{@samp{--question}}) option.