CVS log for src/sys/modules/pf/Makefile

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adapt to ${CC_WNO_IMPLICIT_FALLTHROUGH}

Use ${CC_WNO_IMPLICIT_FALLTHROUGH} instead of
the older style more complex expressions.

bsd.own.mk: rename to CC_WNO_ADDRESS_OF_PACKED_MEMBER

Provide a single variable
	CC_WNO_ADDRESS_OF_PACKED_MEMBER
with options for both clang and gcc, to replace
	CLANG_NO_ADDR_OF_PACKED_MEMBER
	CC_NO_ADDR_OF_PACKED_MEMBER
	GCC_NO_ADDR_OF_PACKED_MEMBER

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

bsd.own.mk: rename NO_ADDR_OF_PACKED_MEMBER to CC_NO_ADDR_OF_PACKED_MEMBER

Add "CC_" prefix to NO_ADDR_OF_PACKED_MEMBER.

We now have the following convention:
GCC_NO_*: Disable specific warnings from GCC.
CLANG_NO_*: Disable specific warnings from Clang.
CC_NO_*: Disable specific warnings from both Clang and GCC.

This reserves "NO_*" Makefile variables to disable other features.

Some space->tab fixes.

Provide a global no-packed-address for both gcc and clang

use the GCC_ warning variable

Avoid alignment of packed member

Mostly merge changes from HEAD upto 20200411

convert HAVE_GCC == 7 to HAVE_GCC >= 7.

Sync with HEAD

Bump default value of WARNS for modules from 3 to 5, and
explicitly set WARNS for modules that fail with WARNS=5.

Also, turn on -Wno-missing-noreturn for clang for some files.

At the moment, among ~ 360 modules,
- 2 (lua and zfs) need WARNS=0
- 1 (solaris) needs WARNS=1
- 136 need WARNS=3 (mostly due to sign-compare)
- 4 need WARNS=4
- others can be compiled with WARNS=5

Discussed on tech-kern.

- use -Wno-error=implicit-fallthrough with GCC7.

Code is fixed, so hiding the warning is not necessary any more.

Simplify and make the GCC check more precise at the same time.

Fix building with MKGCC=no

Avoid gcc 6 specific options when compiling with gcc 5

pf_table.c has many left-shift of negative value issues.

update from HEAD

Sync with HEAD

Add ioconf entries to the pseudo-devices.

build pf module with WARNS=3, and remove the need for -Wno-shadow

set default WARNS for modules to 3 -- the only one that needs < 3 now is pf

sync with head.

sync with head

Sync with HEAD.

file Makefile was added on branch yamt-nfs-mp on 2010-08-11 22:54:51 +0000

file Makefile was added on branch rmind-uvmplock on 2010-05-30 05:18:00 +0000

file Makefile was added on branch uebayasi-xip on 2010-04-30 14:44:18 +0000

Add new type kernel module for pf (includes pflog, but not pfsync).