[Buildroot] [PATCH] libmbim: fix build with musl libc

[Baruch Siach <baruch@tkos.co.il>]

Hi Aleksander,

On Mon, Sep 11, 2017 at 09:54:26AM +0200, Aleksander Morgado wrote:
> This is now failing because the libgudev dependency is optional and
> the build will only use if it's found during the configure checks.
> 
> Imported the same patch that has been applied in the upstream libmbim
> git repository:
>   https://cgit.freedesktop.org/libmbim/libmbim/commit/?id=417b0b80023dc30d61c111ec0a54da2884d3a541
> 
> Signed-off-by: Aleksander Morgado <aleksander@aleksander.es>
> ---
>  ...-prefer-realpath-to-canonicalize_file_nam.patch | 36 ++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
>  create mode 100644 package/libmbim/0001-mbim-device-prefer-realpath-to-canonicalize_file_nam.patch
> 
> diff --git a/package/libmbim/0001-mbim-device-prefer-realpath-to-canonicalize_file_nam.patch b/package/libmbim/0001-mbim-device-prefer-realpath-to-canonicalize_file_nam.patch
> new file mode 100644
> index 000000000..a13aee547
> --- /dev/null
> +++ b/package/libmbim/0001-mbim-device-prefer-realpath-to-canonicalize_file_nam.patch
> @@ -0,0 +1,36 @@
> +From 48772b32f10523cca22b7d63c3523377279c7427 Mon Sep 17 00:00:00 2001
> +From: Aleksander Morgado <aleksander@aleksander.es>
> +Date: Mon, 11 Sep 2017 09:31:03 +0200
> +Subject: [PATCH] mbim-device: prefer realpath() to canonicalize_file_name()
> +
> +Usually the canonicalize_file_name() GNU extension is preferred to the
> +POSIX realpath(), as it covers some of the limitations the latter has.
> +But this extension isn't available in lots of platforms or in other
> +c library implementations (e.g. musl), so just default to the POSIX
> +method to improve portability.
> +
> +Note that the check for canonicalize_file_name() availability during
> +configure isn't as trivial as adding a new AC_CHECK_FUNCS(), and
> +importing a gnulib module seems overkill just for this one liner.
> +
> +(cherry picked from commit 417b0b80023dc30d61c111ec0a54da2884d3a541)

Please add your sign-off here.

baruch

> +---
> + src/libmbim-glib/mbim-device.c | 2 +-
> + 1 file changed, 1 insertion(+), 1 deletion(-)
> +
> +diff --git a/src/libmbim-glib/mbim-device.c b/src/libmbim-glib/mbim-device.c
> +index e1f32a6..20e64af 100644
> +--- a/src/libmbim-glib/mbim-device.c
> ++++ b/src/libmbim-glib/mbim-device.c
> +@@ -867,7 +867,7 @@ get_descriptors_filepath (MbimDevice *self)
> +          *    /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5:2.0
> +          */
> +         tmp = g_strdup_printf ("/sys/class/%s/%s/device", subsystems[i], device_basename);
> +-        path = canonicalize_file_name (tmp);
> ++        path = realpath (tmp, NULL);
> +         g_free (tmp);
> + 
> +         if (g_file_test (path, G_FILE_TEST_EXISTS)) {

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
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