From ec8fd67a3e544e2acdc7174c2705dbf905708614 Mon Sep 17 00:00:00 2001
From: ed <ed@FreeBSD.org>
Date: Tue, 19 Jan 2010 15:31:18 +0000
Subject: [PATCH] Recommit r193732:

  Remove __gnu89_inline.

  Now that we use C99 almost everywhere, just use C99-style in the pmap
  code. Since the pmap code is the only consumer of __gnu89_inline, remove
  it from cdefs.h as well. Because the flag was only introduced 17 months
  ago, I don't expect any problems.

  Reviewed by:    alc

It was backed out, because it prevented us from building kernels using a
7.x compiler. Now that most people use 8.x, there is nothing that holds
us back. Even if people run 7.x, they should be able to build a kernel
if they run `make kernel-toolchain' or `make buildworld' first.
---
 Makefile               | 2 +-
 sys/amd64/amd64/pmap.c | 2 +-
 sys/i386/i386/pmap.c   | 2 +-
 sys/i386/xen/pmap.c    | 2 +-
 sys/sys/cdefs.h        | 6 ------
 5 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index bd267162386a..10e227ccebbd 100644
--- a/Makefile
+++ b/Makefile
@@ -303,7 +303,7 @@ universe_${target}:
 .if !defined(MAKE_JUST_KERNELS)
 	@echo ">> ${target} started on `LC_ALL=C date`"
 	@(cd ${.CURDIR} && env __MAKE_CONF=/dev/null \
-	    ${MAKE} ${JFLAG} buildworld \
+	    ${MAKE} ${JFLAG} kernel-toolchain \
 	    TARGET=${target} \
 	    > _.${target}.buildworld 2>&1 || \
 	    (echo "${target} world failed," \
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c
index 889a06a7f55e..15e9e253a791 100644
--- a/sys/amd64/amd64/pmap.c
+++ b/sys/amd64/amd64/pmap.c
@@ -153,7 +153,7 @@ __FBSDID("$FreeBSD$");
 #endif
 
 #if !defined(DIAGNOSTIC)
-#define PMAP_INLINE	__gnu89_inline
+#define PMAP_INLINE	extern inline
 #else
 #define PMAP_INLINE
 #endif
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c
index 993b13e03b3a..b223186c6d79 100644
--- a/sys/i386/i386/pmap.c
+++ b/sys/i386/i386/pmap.c
@@ -162,7 +162,7 @@ __FBSDID("$FreeBSD$");
 #endif
 
 #if !defined(DIAGNOSTIC)
-#define PMAP_INLINE	__gnu89_inline
+#define PMAP_INLINE	extern inline
 #else
 #define PMAP_INLINE
 #endif
diff --git a/sys/i386/xen/pmap.c b/sys/i386/xen/pmap.c
index 8cd7f00c2420..35f006de3e32 100644
--- a/sys/i386/xen/pmap.c
+++ b/sys/i386/xen/pmap.c
@@ -173,7 +173,7 @@ __FBSDID("$FreeBSD$");
 #endif
 
 #if !defined(PMAP_DIAGNOSTIC)
-#define PMAP_INLINE	__gnu89_inline
+#define PMAP_INLINE	extern inline
 #else
 #define PMAP_INLINE
 #endif
diff --git a/sys/sys/cdefs.h b/sys/sys/cdefs.h
index 44bed25ecca1..5d413d3710f1 100644
--- a/sys/sys/cdefs.h
+++ b/sys/sys/cdefs.h
@@ -234,12 +234,6 @@
 #define	__always_inline
 #endif
 
-#if __GNUC_PREREQ__(4, 2) /* actually 4.1.3 */
-#define	__gnu89_inline	__attribute__((__gnu_inline__)) __inline
-#else
-#define	__gnu89_inline
-#endif
-
 #if __GNUC_PREREQ__(3, 1)
 #define	__noinline	__attribute__ ((__noinline__))
 #else