GCC predefinitions
mike
mike@penbex.com.tw
Wed Feb 21 20:35:00 GMT 2001
Hi, Stephen.
You can add '-v' into your command line to see what
predefinitions has been used when compling.
Most of predefinitions has been added in the build
time, but your can still enable yours by '-D' and
disable by '-U', or just add them into your spec
of cross complier.
---cut from gcc.info-------
`-DMACRO'
Define macro MACRO with the string `1' as its definition.
`-DMACRO=DEFN'
Define macro MACRO as DEFN. All instances of `-D' on the command
line are processed before any `-U' options.
`-UMACRO'
Undefine macro MACRO. `-U' options are evaluated after all `-D'
options, but before any `-include' and `-imacros' options.
-----------------------------
There is a chapter mention some standard and
nonstandard predefine macros in the cpp.info
(/Macros/Predefined Macros)
----- Original Message -----
From: "Stephen Smith" <ischis2@home.com>
To: "CrossGCC" <crossgcc@sourceware.cygnus.com>
Sent: Thursday, February 22, 2001 6:53 AM
Subject: GCC predefinitions
> How can I get gcc to dump the predefinitions. For instance, how can I see
that __GNUC__ is or is not defined and if it
> it what value it has.
>
> sps
>
>
> ------
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http://www.objsw.com/CrossGCC/
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