Re: Build regressions/improvements in v3.5-rc4

Hi Paul,

On Thu, Jun 28, 2012 at 10:20 AM, Paul Mundt [off-list ref] wrote:

On Tue, Jun 26, 2012 at 10:06:27PM +0200, Geert Uytterhoeven wrote:

quoted

On Tue, Jun 26, 2012 at 9:59 PM, Geert Uytterhoeven
[off-list ref] wrote:

quoted

JFYI, when comparing v3.5-rc4 to v3.5-rc3[3], the summaries are:
??- build errors: +11/-219

11 regressions:
=C2=A0 + arch/sh/include/asm/fixmap.h: error: implicit declaration of
function 'BUG_ON' [-Werror=3Dimplicit-function-declaration]: =C2=A0=3D> =

133:2

quoted

=C2=A0 + arch/sh/include/asm/thread_info.h: error: implicit declaration =

of

quoted

function 'WARN_ON' [-Werror=3Dimplicit-function-declaration]: =C2=A0=3D>=

 172:2

quoted

=C2=A0 + include/linux/huge_mm.h: error: implicit declaration of functio=

n

quoted

'BUG' [-Werror=3Dimplicit-function-declaration]: =C2=A0=3D> 185:2

shmin_defconfig, se7712_defconfig, se7721_defconfig, sh-allnoconfig

I'm unable to reproduce any of these, is there some specific compiler
version or warning flag configuration I'm supposed to be using? I'm
building with 4.5.1 at the moment.

Mine (from Tony) is:

sh4-linux-gcc -v
Using built-in specs.
COLLECT_GCC=3D/usr/local/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-gcc
COLLECT_LTO_WRAPPER=3D/usr/local/gcc-4.6.3-nolibc/sh4-linux/bin/../libexec/=
gcc/sh4-linux/4.6.3/lto-wrapper
Target: sh4-linux
Configured with: /home/tony/buildall/src/gcc/configure
--target=3Dsh4-linux --host=3Dx86_64-linux-gnu --build=3Dx86_64-linux-gnu
--enable-targets=3Dall --prefix=3D/opt/cross/gcc-4.6.3-nolibc/sh4-linux/
--enable-languages=3Dc --with-newlib --without-headers --disable-nls
--disable-threads --disable-shared --disable-libmudflap
--disable-libssp --disable-libgomp --disable-decimal-float
--enable-checking=3Drelease --with-multilib-list=3Dm4,m4-nofpu
--with-mpfr=3D/home/tony/buildall/src/sys-x86_64
--with-gmp=3D/home/tony/buildall/src/sys-x86_64 --disable-bootstrap
--disable-libquadmath
Thread model: single
gcc version 4.6.3 (GCC)

Using v3.5-rc4:

se7721_defconfig:

sh4-linux-gcc -Wp,-MD,arch/sh/kernel/.asm-offsets.s.d  -nostdinc
-isystem /usr/local/gcc-4.6.3-nolibc/sh4-linux/bin/../lib/gcc/sh4-linux/4.6=
.3/include
-Iarch/sh/include -Iarch/sh/include/generated -Iinclude  -include
include/linux/kconfig.h -D__KERNEL__ -m4-nofpu -ml -Wa,-isa=3Dany
-ffreestanding -Iarch/sh/include/cpu-sh3 -Iarch/sh/include/cpu-common
-Iarch/sh/include/mach-se -Iarch/sh/include/mach-common -Wall -Wundef
-Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common
-Werror-implicit-function-declaration -Wno-format-security
-fno-delete-null-pointer-checks -O2 -pipe -m4-nofpu -ml -Wa,-isa=3Dany
-ffreestanding -Iarch/sh/include/cpu-sh3 -Iarch/sh/include/cpu-common
-Iarch/sh/include/mach-se -Iarch/sh/include/mach-common
-Wframe-larger-than=3D1024 -fno-stack-protector
-Wno-unused-but-set-variable -fno-omit-frame-pointer
-fno-optimize-sibling-calls -g -Wdeclaration-after-statement
-Wno-pointer-sign -fno-strict-overflow -fconserve-stack
-DCC_HAVE_ASM_GOTO    -D"KBUILD_STR(s)=3D#s"
-D"KBUILD_BASENAME=3DKBUILD_STR(asm_offsets)"
-D"KBUILD_MODNAME=3DKBUILD_STR(asm_offsets)" -fverbose-asm -S -o
arch/sh/kernel/asm-offsets.s arch/sh/kernel/asm-offsets.c
In file included from include/linux/thread_info.h:54:0,
                 from include/linux/preempt.h:9,
                 from include/linux/spinlock.h:50,
                 from include/linux/mmzone.h:7,
                 from include/linux/gfp.h:4,
                 from include/linux/mm.h:8,
                 from arch/sh/kernel/asm-offsets.c:13:
arch/sh/include/asm/thread_info.h: In function 'set_restore_sigmask':
arch/sh/include/asm/thread_info.h:172:2: error: implicit declaration
of function 'WARN_ON' [-Werror=3Dimplicit-function-declaration]
In file included from arch/sh/include/asm/pgtable.h:25:0,
                 from include/linux/mm.h:44,
                 from arch/sh/kernel/asm-offsets.c:13:
arch/sh/include/asm/fixmap.h: In function 'virt_to_fix':
arch/sh/include/asm/fixmap.h:133:2: error: implicit declaration of
function 'BUG_ON' [-Werror=3Dimplicit-function-declaration]
In file included from arch/sh/include/asm/pgtable.h:164:0,
                 from include/linux/mm.h:44,
                 from arch/sh/kernel/asm-offsets.c:13:
include/asm-generic/pgtable.h: In function 'pmdp_test_and_clear_young':
include/asm-generic/pgtable.h:56:2: error: implicit declaration of
function 'BUG' [-Werror=3Dimplicit-function-declaration]
cc1: some warnings being treated as errors
make[1]: *** [arch/sh/kernel/asm-offsets.s] Error 1


allnoconfig:

sh4-linux-gcc -Wp,-MD,arch/sh/kernel/.asm-offsets.s.d  -nostdinc
-isystem /usr/local/gcc-4.6.3-nolibc/sh4-linux/bin/../lib/gcc/sh4-linux/4.6=
.3/include
-Iarch/sh/include -Iarch/sh/include/generated -Iinclude  -include
include/linux/kconfig.h -D__KERNEL__ -m4-nofpu -ml -Wa,-isa=3Dany
-ffreestanding -Iarch/sh/include/cpu-sh2 -Iarch/sh/include/cpu-common
-Iarch/sh/include/mach-common -Wall -Wundef -Wstrict-prototypes
-Wno-trigraphs -fno-strict-aliasing -fno-common
-Werror-implicit-function-declaration -Wno-format-security
-fno-delete-null-pointer-checks -O2 -pipe -m4-nofpu -ml -Wa,-isa=3Dany
-ffreestanding -Iarch/sh/include/cpu-sh2 -Iarch/sh/include/cpu-common
-Iarch/sh/include/mach-common -Wframe-larger-than=3D1024
-fno-stack-protector -Wno-unused-but-set-variable -fomit-frame-pointer
-Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow
-fconserve-stack -DCC_HAVE_ASM_GOTO    -D"KBUILD_STR(s)=3D#s"
-D"KBUILD_BASENAME=3DKBUILD_STR(asm_offsets)"
-D"KBUILD_MODNAME=3DKBUILD_STR(asm_offsets)" -fverbose-asm -S -o
arch/sh/kernel/asm-offsets.s arch/sh/kernel/asm-offsets.c
In file included from include/linux/thread_info.h:54:0,
                 from include/linux/preempt.h:9,
                 from include/linux/spinlock.h:50,
                 from include/linux/mmzone.h:7,
                 from include/linux/gfp.h:4,
                 from include/linux/mm.h:8,
                 from arch/sh/kernel/asm-offsets.c:13:
arch/sh/include/asm/thread_info.h: In function 'set_restore_sigmask':
arch/sh/include/asm/thread_info.h:172:2: error: implicit declaration
of function 'WARN_ON' [-Werror=3Dimplicit-function-declaration]
In file included from arch/sh/include/asm/pgtable.h:25:0,
                 from include/linux/mm.h:44,
                 from arch/sh/kernel/asm-offsets.c:13:
arch/sh/include/asm/fixmap.h: In function 'virt_to_fix':
arch/sh/include/asm/fixmap.h:133:2: error: implicit declaration of
function 'BUG_ON' [-Werror=3Dimplicit-function-declaration]
In file included from include/linux/mm.h:257:0,
                 from arch/sh/kernel/asm-offsets.c:13:
include/linux/huge_mm.h: In function 'hugepage_madvise':
include/linux/huge_mm.h:185:2: error: implicit declaration of function
'BUG' [-Werror=3Dimplicit-function-declaration]
cc1: some warnings being treated as errors
make[1]: *** [arch/sh/kernel/asm-offsets.s] Error 1

Gr{oetje,eeting}s,

=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k=
.org

In personal conversations with technical people, I call myself a hacker. Bu=
t
when I'm talking to journalists I just say "programmer" or something like t=
hat.
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0=C2=A0 =C2=A0=C2=A0 -- Linus Torvalds