gcc_001.txt

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求问 gcc的标记 -MMD -MP -MF"xx.d" -MT"xx.d" 都是什么意思 (2012-06-05 05:51:41)转载▼
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求问 gcc的标记 -MMD -MP -MF"xx.d" -MT"xx.d" 都是什么意思求问:
gcc的标记 -MMD -MP -MF"xx.d" -MT"xx.d" 都是什么意思?
有啥作用?info gcc原帖由 flw 于 2007-5-8 10:41 发表
info gcc
我用windows没有linux,没办法info,
能怎么帮我info一下
最好info出中文就好了:lol:那就上gnu的网站上搞个manual原帖由 rrrrrrrr8 于 2007-5-8 10:48 发表

我用windows没有linux,没办法info,
能怎么帮我info一下
最好info出中文就好了:lol:
那就 google info gcc`-MF FILE'
When used with `-M' or `-MM', specifies a file to write the
dependencies to.If no `-MF' switch is given the preprocessor
sends the rules to the same place it would have sent preprocessed
output.

When used with the driver options `-MD' or `-MMD', `-MF' overrides
the default dependency output file.

`-MD'
`-MD' is equivalent to `-M -MF FILE', except that `-E' is not
implied.The driver determines FILE based on whether an `-o'
option is given.If it is, the driver uses its argument but with
a suffix of `.d', otherwise it take the basename of the input file
and applies a `.d' suffix.

If `-MD' is used in conjunction with `-E', any `-o' switch is
understood to specify the dependency output file (but *note -MF:
dashMF.), but if used without `-E', each `-o' is understood to
specify a target object file.

Since `-E' is not implied, `-MD' can be used to generate a
dependency output file as a side-effect of the
请教在哪加函数可以在找不到CF卡的时候能够使系统自动重启。

compilation process.

`-MMD'
Like `-MD' except mention only user header files, not system
header files.



`-MP'
This option instructs CPP to add a phony target for each dependency
other than the main file, causing each to depend on nothing.These
dummy rules work around errors `make' gives if you remove header
files without updating the `Makefile' to match.

This is typical output:

test.o: test.c test.h

test.h:

`-MT TARGET'
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 suf