ltrace: Fix build on musl

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-oe/recipes-devtools/ltrace/ltrace/0001-configure-Recognise-linux-musl-as-a-host-OS.patch

@@ -0,0 +1,25 @@
+From c1d3aaf5ec810c2594938438c7b4ccd20943f255 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Fri, 7 Jul 2017 10:20:52 -0700
+Subject: [PATCH] configure: Recognise linux-musl as a host OS
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ configure.ac | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/configure.ac b/configure.ac
+index 3e8667f..95d6642 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -35,6 +35,7 @@ AC_CANONICAL_HOST
+ case "${host_os}" in
+     linux-gnu*) HOST_OS="linux-gnu" ;;
+     linux-uclibc*) HOST_OS="linux-gnu" ;;
++    linux-musl*) HOST_OS="linux-gnu" ;;
+     *)		AC_MSG_ERROR([unkown host-os ${host_os}]) ;;
+ esac
+ AC_SUBST(HOST_OS)
+-- 
+2.13.2
+

meta-oe/recipes-devtools/ltrace/ltrace_git.bb

@@ -23,6 +23,7 @@ SRC_URI = "git://anonscm.debian.org/collab-maint/ltrace.git;branch=master \
            file://0001-ARM-code-has-unreachable-code-after-switch-statement.patch \
            file://0001-Fix-tautological-compare-warning.patch \
            file://0001-Add-support-for-mips64-n32-n64.patch \
+           file://0001-configure-Recognise-linux-musl-as-a-host-OS.patch \
            "
 S = "${WORKDIR}/git"