[Buildroot] [PATCH v2 02/12] package/atop: fix BUG_85180 build timeout

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

Hello Giulio,

On Tue, 21 May 2019 15:39:22 +0200
Giulio Benetti <giulio.benetti@micronovasrl.com> wrote:

> With Microblaze Gcc version < 8.x build hangs on compiling last files
> before linking. This is due to bug 85180:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85180
> Bug shows up building atop with optimization but not when building with
> -O0.
> 
> If BR2_TOOLCHAIN_HAS_GCC_BUG_85180=y force using -O0 passing it to
> CFLAGS.
> 
> Fixes:
> http://autobuild.buildroot.net/results/94a/94aa00f776b8a3491ac0b3212c95f5e666c5a29a/
> 
> Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>

I have applied to master after reworking the commit title and commit
log, and also adjusting the code a bit (see below).

> diff --git a/package/atop/atop.mk b/package/atop/atop.mk
> index aaf02908c4..afce71f6cb 100644
> --- a/package/atop/atop.mk
> +++ b/package/atop/atop.mk
> @@ -10,8 +10,13 @@ ATOP_LICENSE = GPL-2.0+
>  ATOP_LICENSE_FILES = COPYING
>  ATOP_DEPENDENCIES = ncurses zlib
>  
> +ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
> +ATOP_CFLAGS += $(TARGET_CFLAGS) -O0
> +endif

I believe:

ATOP_CFLAGS = $(TARGET_CFLAGS)

ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
ATOP_CFLAGS += -O0
endif

is more correct, otherwise you pass an empty CFLAGS when
BR2_TOOLCHAIN_HAS_GCC_BUG_85180 is false.


> +
>  define ATOP_BUILD_CMDS
> -	$(MAKE) $(TARGET_CONFIGURE_OPTS) -C $(@D)
> +	$(MAKE) $(TARGET_CONFIGURE_OPTS) CFLAGS="$(ATOP_CFLAGS)" \
> +	-C $(@D)

The second line is typically indented with one more tab.

As I said, I've applied to master after fixing those issues.

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com