modemmanager: Fix build with musl provide canonicalize_file_name()

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Acked-by: Andreas Müller <schnitzeltony@gmail.com>

meta-oe/recipes-connectivity/modemmanager/modemmanager/0001-Add-configure-check-for-canonicalize_file_name-befor.patch

@@ -0,0 +1,66 @@
+From 07f1eda630517816bfa900e811963745a149e57c Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 8 Jun 2018 20:38:30 -0700
+Subject: [PATCH] Add configure check for canonicalize_file_name() before use
+
+Define canonicalize_file_name API if not provided by system C library
+musl e.g. does not provide this API
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Pending
+
+ configure.ac                                |  2 ++
+ src/kerneldevice/mm-kernel-device-generic.c | 18 ++++++++++++++++++
+ 2 files changed, 20 insertions(+)
+
+Index: ModemManager-1.7.991/configure.ac
+===================================================================
+--- ModemManager-1.7.991.orig/configure.ac
++++ ModemManager-1.7.991/configure.ac
+@@ -72,6 +72,8 @@ AC_SUBST(MM_GLIB_LT_CURRENT)
+ AC_SUBST(MM_GLIB_LT_REVISION)
+ AC_SUBST(MM_GLIB_LT_AGE)
+ 
++AC_CHECK_FUNCS([canonicalize_file_name])
++
+ dnl-----------------------------------------------------------------------------
+ dnl Documentation
+ dnl
+Index: ModemManager-1.7.991/src/kerneldevice/mm-kernel-device-generic.c
+===================================================================
+--- ModemManager-1.7.991.orig/src/kerneldevice/mm-kernel-device-generic.c
++++ ModemManager-1.7.991/src/kerneldevice/mm-kernel-device-generic.c
+@@ -21,6 +21,7 @@
+ #define _LIBMM_INSIDE_MM
+ #include <libmm-glib.h>
+ 
++#include "config.h"
+ #include "mm-kernel-device-generic.h"
+ #include "mm-kernel-device-generic-rules.h"
+ #include "mm-log.h"
+@@ -100,6 +101,24 @@ read_sysfs_property_as_string (const gch
+     return contents;
+ }
+ 
++#ifndef HAVE_CANONICALIZE_FILE_NAME
++#include <limits.h>
++#include <string.h>
++#include <stdlib.h>
++#include <stdio.h>
++static char * canonicalize_file_name(const char *path)
++{
++   char buf[PATH_MAX] = { };
++
++   snprintf(buf, sizeof(buf) - 1, "%s", path);
++
++   if (!realpath(path, buf))
++       return NULL;
++
++   return strdup(buf);
++}
++#endif
++
+ /*****************************************************************************/
+ /* Load contents */
+ 

meta-oe/recipes-connectivity/modemmanager/modemmanager_1.7.991.bb

@@ -11,7 +11,9 @@ inherit gnomebase gettext systemd vala gobject-introspection bash-completion
 
 DEPENDS = "glib-2.0 libgudev dbus-glib intltool-native"
 
-SRC_URI = "http://www.freedesktop.org/software/ModemManager/ModemManager-${PV}.tar.xz"
+SRC_URI = "http://www.freedesktop.org/software/ModemManager/ModemManager-${PV}.tar.xz \
+           file://0001-Add-configure-check-for-canonicalize_file_name-befor.patch \
+           "
 
 SRC_URI[md5sum] = "4efe6a240cef212bf8855c95424e7c7f"
 SRC_URI[sha256sum] = "4e366243bd4983f2e6efe35cb901cf5da51939307b5d6299fe622a9fcf411745"