On 2016-11-02 18:20 +0100, Sebastian Andrzej Siewior wrote:
> Debian Woody is pre-gcc3.2 and Sarge ships 3.3 gcc. I tried to compile
> v4.8.6 on Sarge failed due to binutils:
> |arch/x86/entry/entry_32.S: Assembler messages:
> |arch/x86/entry/entry_32.S:379: Error: invalid character '"' in operand 1
> |arch/x86/entry/entry_32.S:454: Error: too many positional arguments
> |arch/x86/entry/entry_32.S:580: Error: too many positional arguments
> |arch/x86/boot/bioscall.S:68: Error: `68(%esp)' is not a valid 16 bit base/index expression
>
> among other errors. Sarge comes with GNU ld version 2.15 with is not
> recent enough. I don't see those errors on Etch which ships version 2.17
> and therefore I raise the limit to 2.17.
I can confirm that binutils 2.16 is not recent enough either, while 2.17
works.
> gcc is a different story. 3.3 It throws a lot of warnings
> |include/linux/irq.h:402: warning: parameter has incomplete type
> |include/linux/irq.h:403: warning: parameter has incomplete type
> |drivers/gpu/drm/i915/i915_gem_gtt.h:312: warning: parameter has incomplete type
>
> during the compile and fails then with
> | cc1: error: unrecognized option `-Wno-override-init'
>
> or later with
>
> |lib/lzo/lzo1x_compress.c: In function `lzo1x_1_do_compress':
> |lib/lzo/lzo1x_compress.c:132: error: implicit declaration of function `__builtin_ctz'
>
> Etch (with gcc v4.1.2) gets to compile the kernel without plenty of
> warnings and it also chokes on Wno-override-init but that one could be
> easily fixed if we want to keep v4.1 as the minimum.
> So I think raising the bar to gcc v4.1 isn't that bad given that the
> last release of gcc 4.1 was on February 13, 2007.
For the record, the -Wno-override-init problem has already been fixed in
4.9-rc3 by commit a2209b742e6 ("x86/build: Fix build with older GCC
versions").
Cheers,
Sven
> diff --git a/Documentation/Changes b/Documentation/Changes
> index 22797a15dc24..14e65b445707 100644
> --- a/Documentation/Changes
> +++ b/Documentation/Changes
> @@ -29,9 +29,9 @@ you probably needn't concern yourself with isdn4k-utils.
> ====================== =============== ========================================
> Program Minimal version Command to check the version
> ====================== =============== ========================================
> -GNU C 3.2 gcc --version
> +GNU C 4.1 gcc --version
> GNU make 3.80 make --version
> -binutils 2.12 ld -v
> +binutils 2.17 ld -v
> util-linux 2.10o fdformat --version
> module-init-tools 0.9.10 depmod -V
> e2fsprogs 1.41.4 e2fsck -V
> --
> 2.10.2
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