Re: [Buildroot] [PATCH v2] package/gmp: Fix for c23

[Thomas Petazzoni via buildroot <buildroot@buildroot.org>]

Hello Charlie,

On Thu, 24 Apr 2025 12:17:26 -0700
Charlie Jenkins <charlie@rivosinc.com> wrote:

> GMP will not build for a C compiler configured for c23 because its
> autoconf scripts use deprecated function prototypes. Include an upstream
> patch that fixes this issue.
> 
> Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
> ---
> Changes in v2:
> - Use autoreconf instead of patching configure
> - Link to v1: https://lore.kernel.org/r/20250424-fix_gmp_c23-v1-1-b2474a9585b6@rivosinc.com

Thanks for this v2.

> diff --git a/package/gmp/0001-acinclude.m4-Add-parameter-names-in-prototype-for-g.patch b/package/gmp/0001-acinclude.m4-Add-parameter-names-in-prototype-for-g.patch
> new file mode 100644
> index 0000000000000000000000000000000000000000..339718888d0e1dd6bf0c3601632fceee4eff5f81
> --- /dev/null
> +++ b/package/gmp/0001-acinclude.m4-Add-parameter-names-in-prototype-for-g.patch
> @@ -0,0 +1,56 @@
> +From: Khem Raj <raj.khem@gmail.com>
> +Date: Sat, 15 Mar 2025 17:58:40 +0100
> +Subject: [PATCH] acinclude.m4: Add parameter names in prototype for g().
> +
> +This allows it to compile with older gcc e.g. gcc-10
> +which does not have allow parameter name omission, it results
> +in
> +
> +a.c: In function ‘g’:
> +a.c:3:8: error: parameter name omitted
> +    3 | void g(int,t1 const*,t1,t2,t1 const*,int){}
> +      |        ^~~
> +
> +this was added to gcc via [1] thats why it is supported in
> +newer gcc.
> +
> +Adding the parameter names make it compatible with
> +old and new gcc
> +
> +[1] https://gcc.gnu.org/pipermail/gcc-cvs/2020-October/336068.html
> +
> +Signed-off-by: Khem Raj <raj.khem at gmail.com>
> +Upstream: https://gmplib.org/list-archives/gmp-devel/2025-March/006294.html

Our policy requires that you add your Signed-off-by right here.


> diff --git a/package/gmp/gmp.mk b/package/gmp/gmp.mk
> index 7e8da9025c93b98b5820f297b6ea3549597395a5..fff211a4f61accce32760885bca2d32ce99c4701 100644
> --- a/package/gmp/gmp.mk
> +++ b/package/gmp/gmp.mk
> @@ -7,6 +7,7 @@
>  GMP_VERSION = 6.3.0
>  GMP_SITE = $(BR2_GNU_MIRROR)/gmp
>  GMP_SOURCE = gmp-$(GMP_VERSION).tar.xz

And here add:

# 0001-acinclude.m4-Add-parameter-names-in-prototype-for-g.patch

> +GMP_AUTORECONF = YES
>  GMP_INSTALL_STAGING = YES
>  GMP_LICENSE = LGPL-3.0+ or GPL-2.0+
>  GMP_LICENSE_FILES = COPYING.LESSERv3 COPYINGv2

Thanks!

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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