[Buildroot] [PATCH v4] bash: fix linking for static builds with uClibc toolchains
Arnout Vandecappelle
arnout at mind.be
Wed Oct 22 16:27:30 UTC 2014
On 22/10/14 11:40, Vicente Olivert Riera wrote:
> bash fails to link for static builds with uClibc toolchains due to
> getenv redefinitions. This is caused because bash is unable to check if
> getenv is already defined when cross-compiling, so it defaults to 'yes':
>
> configure:14438: WARNING: cannot check getenv redefinition if cross
> compiling -- defaulting to yes
>
> We can avoid this redefinition by passing bash_cv_getenv_redef=no to the
> configure script.
>
> Related:
> http://lists.gnu.org/archive/html/bug-bash/2012-03/msg00052.html
>
> Fixes:
> http://autobuild.buildroot.net/results/a20/a2007e6dbcfe53e7cd837ae642869ee26376826a/
>
> Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
Small additional remark...
> ---
> package/bash/bash.mk | 11 +++++++++++
> 1 files changed, 11 insertions(+), 0 deletions(-)
>
> diff --git a/package/bash/bash.mk b/package/bash/bash.mk
> index 34a3a73..5eec3cc 100644
> --- a/package/bash/bash.mk
> +++ b/package/bash/bash.mk
> @@ -28,6 +28,17 @@ BASH_MAKE = $(MAKE1)
> # The static build needs some trickery
> ifeq ($(BR2_PREFER_STATIC_LIB),y)
> BASH_CONF_OPTS += --enable-static-link --without-bash-malloc
> +# bash wants to redefine the getenv() function. To check whether this is
> +# possible, AC_TRY_RUN is used which is not possible in
> +# cross-compilation.
> +# On uClibc, redefining getenv is not possible; on glibc and musl it is.
I failed to notice earlier: glibc is not available on static builds so it
doesn't make a lot of sense to mention it here.
Regards,
Arnout
> +# Related:
> +# http://lists.gnu.org/archive/html/bug-bash/2012-03/msg00052.html
> +ifeq ($(BR2_TOOLCHAIN_USES_UCLIBC),y)
> +BASH_CONF_ENV += bash_cv_getenv_redef=no
> +else
> +BASH_CONF_ENV += bash_cv_getenv_redef=yes
> +endif
> endif
>
> # Make /bin/sh -> bash (no other shell, better than busybox shells)
>
--
Arnout Vandecappelle arnout at mind be
Senior Embedded Software Architect +32-16-286500
Essensium/Mind http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint: 7CB5 E4CC 6C2E EFD4 6E3D A754 F963 ECAB 2450 2F1F
More information about the buildroot
mailing list