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libbsd.txt: Clarify rules to modify FreeBSD code
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16
libbsd.txt
16
libbsd.txt
@@ -434,8 +434,9 @@ http://www.freebsd.org/cgi/man.cgi?query=kobj&sektion=9&apropos=0&manpath=FreeBS
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=== Rules for Modifying FreeBSD Source
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Only add lines. Subtract code by added `#ifndef __rtems__`. This makes
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merging easier in the future. For example:
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Only add lines. If your patch contains lines starting with a '-', then this is
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wrong. Subtract code by added `#ifndef __rtems__`. This makes merging easier
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in the future. For example:
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-------------------------------------------------------------------------------
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/* Global variables for the kernel. */
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@@ -479,7 +480,16 @@ extern volatile int ticks;
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-------------------------------------------------------------------------------
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Add nothing (even blank lines) before or after the `__rtems__` guards. Always
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include a `__rtems__` in the guards to make searches easy.
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include a `__rtems__` in the guards to make searches easy, so use
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* `#ifndef __rtems__`,
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* `#ifdef __rtems__`,
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* `#else /* __rtems__ */`, and
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* `#endif /* __rtems__ */`.
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For new code use
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http://www.freebsd.org/cgi/man.cgi?query=style&apropos=0&sektion=9&manpath=FreeBSD+9.2-RELEASE&arch=default&format=html[STYLE(9)].
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Do not format original FreeBSD code.
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== BSD Library Source
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