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PR preprocessor/15185, PR preprocessor/20989:

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* doc/cppopts.texi <-MT>: Update description of algorithm for
	computing default target.
	<-M, -MD>: Reword "basename" text.

From-SVN: r120679
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Tom Tromey 2007-01-11 16:26:55 +00:00 committed by Tom Tromey
parent 455f14dd4d
commit 78392049f6
2 changed files with 19 additions and 10 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2007-01-11 Tom Tromey <tromey@redhat.com>
PR preprocessor/15185, PR preprocessor/20989:
* doc/cppopts.texi <-MT>: Update description of algorithm for
computing default target.
<-M, -MD>: Reword "basename" text.
2007-01-11 Roger Sayle <roger@eyesopen.com>
* builtins.c (expand_builtin_pow, expand_builtin_powi,

22
gcc/doc/cppopts.texi
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@ -1,4 +1,4 @@
@c Copyright (c) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
@c Copyright (c) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
@c Free Software Foundation, Inc.
@c This is part of the CPP and GCC manuals.
@c For copying conditions, see the file gcc.texi.
@ -200,10 +200,11 @@ the included files, including those coming from @option{-include} or
@option{-imacros} command line options.
Unless specified explicitly (with @option{-MT} or @option{-MQ}), the
object file name consists of the basename of the source file with any
suffix replaced with object file suffix. If there are many included
files then the rule is split into several lines using @samp{\}-newline.
The rule has no commands.
object file name consists of the name of the source file with any
suffix replaced with object file suffix and with any leading directory
parts removed. If there are many included files then the rule is
split into several lines using @samp{\}-newline. The rule has no
commands.
This option does not suppress the preprocessor's debug output, such as
@option{-dM}. To avoid mixing such debug output with the dependency
@ -268,9 +269,9 @@ test.h:
@opindex MT
Change the target of the rule emitted by dependency generation. By
default CPP takes the name of the main input file, including any path,
deletes any file suffix such as @samp{.c}, and appends the platform's
usual object suffix. The result is the target.
default CPP takes the name of the main input file, deletes any
directory components and any file suffix such as @samp{.c}, and
appends the platform's usual object suffix. The result is the target.
An @option{-MT} option will set the target to be exactly the string you
specify. If you want multiple targets, you can specify them as a single
@ -300,8 +301,9 @@ The default target is automatically quoted, as if it were given with
@option{-MD} is equivalent to @option{-M -MF @var{file}}, except that
@option{-E} is not implied. The driver determines @var{file} based on
whether an @option{-o} option is given. If it is, the driver uses its
argument but with a suffix of @file{.d}, otherwise it take the
basename of the input file and applies a @file{.d} suffix.
argument but with a suffix of @file{.d}, otherwise it takes the name
of the input file, removes any directory components and suffix, and
applies a @file{.d} suffix.
If @option{-MD} is used in conjunction with @option{-E}, any
@option{-o} switch is understood to specify the dependency output file