Re: [Buildroot] [PATCH 1/1] package/mraa: fix build with musl >= 1.2.5

[Pieterjan Camerlynck <pieterjanca@gmail.com>]

On Sun, Mar 17, 2024 at 03:47:01PM +0100, Fabrice Fontaine wrote:
> Fix the following build failure with musl >= 1.2.5 (raised since commit
> f7f03445cf320adbbc41270a806b38c911d3454a):
> 
> /home/autobuild/autobuild/instance-9/output-1/build/mraa-2.2.0/src/mraa.c: In function 'mraa_count_iio_devices':
> /home/autobuild/autobuild/instance-9/output-1/build/mraa-2.2.0/src/mraa.c:341:38: error: implicit declaration of function 'basename'; did you mean 'rename'? [-Werror=implicit-function-declaration]
>   341 |     if (fnmatch(IIO_DEVICE_WILDCARD, basename(path), 0) == 0) {
>       |                                      ^~~~~~~~
>       |                                      rename
> 
> Fixes: f7f03445cf320adbbc41270a806b38c911d3454a
>  - http://autobuild.buildroot.org/results/1f16df70e49a9f8823a791c0fcc677de07136835
> 
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>

Reviewed-by: Pieterjan Camerlynck <pieterjanca@gmail.com>

> ---
>  .../mraa/0002-mraa-Use-posix-basename.patch   | 45 +++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 package/mraa/0002-mraa-Use-posix-basename.patch
> 
> diff --git a/package/mraa/0002-mraa-Use-posix-basename.patch b/package/mraa/0002-mraa-Use-posix-basename.patch
> new file mode 100644
> index 0000000000..3c5c99f031
> --- /dev/null
> +++ b/package/mraa/0002-mraa-Use-posix-basename.patch
> @@ -0,0 +1,45 @@
> +From 47c3850cddd63cebd9dc48e411963314449118f1 Mon Sep 17 00:00:00 2001
> +From: Khem Raj <raj.khem@gmail.com>
> +Date: Sun, 31 Dec 2023 19:16:35 -0800
> +Subject: [PATCH] mraa: Use posix basename
> +
> +Musl has removed the declaration from string.h [1] which exposes the
> +problem especially with clang-17+ compiler where implicit function
> +declaration is flagged as error. Use posix basename and make a copy of
> +string to operate on to emulate GNU basename behaviour.
> +
> +[1] https://git.musl-libc.org/cgit/musl/commit/?id=725e17ed6dff4d0cd22487bb64470881e86a92e7
> +
> +Signed-off-by: Khem Raj <raj.khem@gmail.com>
> +
> +Upstream: https://github.com/eclipse/mraa/commit/47c3850cddd63cebd9dc48e411963314449118f1
> +Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> +---
> + src/mraa.c | 5 ++++-
> + 1 file changed, 4 insertions(+), 1 deletion(-)
> +
> +diff --git a/src/mraa.c b/src/mraa.c
> +index 653ea1fa7..b556d0455 100644
> +--- a/src/mraa.c
> ++++ b/src/mraa.c
> +@@ -12,6 +12,7 @@
> + #endif
> + 
> + #include <dlfcn.h>
> ++#include <libgen.h>
> + #include <pwd.h>
> + #include <sched.h>
> + #include <stddef.h>
> +@@ -341,9 +342,11 @@ static int
> + mraa_count_iio_devices(const char* path, const struct stat* sb, int flag, struct FTW* ftwb)
> + {
> +     // we are only interested in files with specific names
> +-    if (fnmatch(IIO_DEVICE_WILDCARD, basename(path), 0) == 0) {
> ++    char* tmp = strdup(path);
> ++    if (fnmatch(IIO_DEVICE_WILDCARD, basename(tmp), 0) == 0) {
> +         num_iio_devices++;
> +     }
> ++    free(tmp);
> +     return 0;
> + }
> + 
> -- 
> 2.43.0
> 
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