* doc/cppopts.texi <-MT>: Update description of algorithm for
computing default target.
<-M, -MD>: Reword "basename" text.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120679
138bc75d-0d04-0410-961f-
82ee72b054a4
+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,
2007-01-11 Roger Sayle <roger@eyesopen.com>
* builtins.c (expand_builtin_pow, expand_builtin_powi,
-@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.
@c Free Software Foundation, Inc.
@c This is part of the CPP and GCC manuals.
@c For copying conditions, see the file gcc.texi.
@option{-imacros} command line options.
Unless specified explicitly (with @option{-MT} or @option{-MQ}), the
@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
This option does not suppress the preprocessor's debug output, such as
@option{-dM}. To avoid mixing such debug output with the dependency
@opindex MT
Change the target of the rule emitted by dependency generation. By
@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
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
@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
@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
If @option{-MD} is used in conjunction with @option{-E}, any
@option{-o} switch is understood to specify the dependency output file