uftrace: add recipe

- Add recipe for uftrace v0.7.
- Support x86_64, arm (v6 or later), and aarch64.
- Disable for armv4 and armv5 in arm architecture which is only
  supported armv6 or later.
- Attached 2 patches is merged to upstream.

Signed-off-by: Changhyeok Bae <changhyeok.bae@gmail.com>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

meta-oe/recipes-devtools/uftrace/uftrace/0001-Makefile-Add-LDFLAGS-in-export.patch

@@ -0,0 +1,31 @@
+From ec794945475d5792f2ae85afe461e64266613640 Mon Sep 17 00:00:00 2001
+From: Changhyeok Bae <changhyeok.bae@gmail.com>
+Date: Thu, 13 Jul 2017 16:44:52 +0900
+Subject: [PATCH 1/2] Makefile: Add LDFLAGS in export
+
+To use build with musl, need to argp library.
+So need to add LDFLAGS from outside.
+
+Upstream-Status: Accepted
+
+Signed-off-by: <Changhyeok Bae changhyeok.bae@gmail.com>
+---
+ Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Makefile b/Makefile
+index 67be2da..0ca649a 100644
+--- a/Makefile
++++ b/Makefile
+@@ -48,7 +48,7 @@ endif
+ RM = rm -f
+ INSTALL = install
+ 
+-export ARCH CC AR LD RM srcdir objdir
++export ARCH CC AR LD RM srcdir objdir LDFLAGS
+ 
+ COMMON_CFLAGS := -O2 -g -D_GNU_SOURCE $(CFLAGS) $(CPPFLAGS)
+ COMMON_CFLAGS +=  -iquote $(srcdir) -iquote $(objdir) -iquote $(srcdir)/arch/$(ARCH)
+-- 
+1.9.1
+

meta-oe/recipes-devtools/uftrace/uftrace/0002-utils-Add-limits-header-to-fix-build-error.patch

@@ -0,0 +1,31 @@
+From 3bda554766150705160fe2191d8761c7881e2433 Mon Sep 17 00:00:00 2001
+From: Changhyeok Bae <changhyeok.bae@gmail.com>
+Date: Thu, 13 Jul 2017 16:46:20 +0900
+Subject: [PATCH 2/2] utils: Add limits header to fix build error
+
+[Error]
+error: 'PATH_MAX' undeclared (first use in this function); did you mean
+'INT8_MAX'?
+
+Upstream-Status: Accepted
+
+Signed-off-by: Changhyeok Bae <changhyeok.bae@gmail.com>
+---
+ utils/utils.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/utils/utils.c b/utils/utils.c
+index 03522c9..30f9e81 100644
+--- a/utils/utils.c
++++ b/utils/utils.c
+@@ -6,6 +6,7 @@
+ #include <errno.h>
+ #include <sys/uio.h>
+ #include <sys/stat.h>
++#include <limits.h>
+ 
+ #include "utils/utils.h"
+ 
+-- 
+1.9.1
+

meta-oe/recipes-devtools/uftrace/uftrace_0.7.bb

@@ -0,0 +1,35 @@
+SUMMARY = "Trace and analyze execution of a program written in C/C++"
+HOMEPAGE = "https://github.com/namhyung/uftrace"
+BUGTRACKER = "https://github.com/namhyung/uftrace/issues"
+SECTION = "devel"
+LICENSE = "GPLv2"
+LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263"
+
+DEPENDS = "elfutils"
+DEPENDS_append_libc-musl = " argp-standalone"
+
+inherit autotools
+
+SRCREV = "712ad01fdde57893936d7e254451eec67ab41ca6"
+SRC_URI = "\
+    git://github.com/namhyung/${BPN} \
+    file://0001-Makefile-Add-LDFLAGS-in-export.patch \
+    file://0002-utils-Add-limits-header-to-fix-build-error.patch \
+"
+S = "${WORKDIR}/git"
+
+LDFLAGS_append_libc-musl = " -largp"
+EXTRA_OECONF = "ARCH=${TARGET_ARCH}"
+
+do_configure() {
+    ${S}/configure ${EXTRA_OECONF}
+}
+
+FILES_SOLIBSDEV = ""
+FILES_${PN} += "${libdir}/*.so"
+
+COMPATIBLE_HOST = "(x86_64|aarch64|arm)"
+
+# uftrace supports armv6 and above
+COMPATIBLE_HOST_armv4 = 'null'
+COMPATIBLE_HOST_armv5 = 'null'