systemd: Fix build with uclibc

225 needs additional patches for cater for new APIs used
in systemd

Change-Id: Idb66c2c6bb65c94b52ba35b276ca12cc868b043e
(From OE-Core rev: a267cf21b8e7c79e53354bd645c205f617de816c)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/systemd/systemd/0001-fix-build-on-uClibc-exp10.patch

@@ -0,0 +1,22 @@
+Inspired by: http://peter.korsgaard.com/patches/alsa-utils/alsamixer-fix-build-on-uClibc-exp10.patch
+
+exp10 extension is not part of uClibc, so compute it.
+
+
+Signed-off-by: Samuel Martin <s.martin49@gmail.com>
+
+Upstream-Status: Pending
+
+Index: git/src/basic/missing.h
+===================================================================
+--- git.orig/src/basic/missing.h
++++ git/src/basic/missing.h
+@@ -1036,3 +1036,8 @@ static inline int kcmp(pid_t pid1, pid_t
+ #ifndef INPUT_PROP_ACCELEROMETER
+ #define INPUT_PROP_ACCELEROMETER  0x06
+ #endif
++
++#ifdef __UCLIBC__
++/* 10^x = 10^(log e^x) = (e^x)^log10 = e^(x * log 10) */
++#define exp10(x) (exp((x) * log(10)))
++#endif /* __UCLIBC__ */

meta/recipes-core/systemd/systemd/0022-Use-getenv-when-secure-versions-are-not-available.patch

@@ -0,0 +1,39 @@
+From cb71e4beea3b3b11e5951f95c829cd2eee9fcf7b Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 12 Sep 2015 19:10:04 +0000
+Subject: [PATCH 22/31] Use getenv when secure versions are not available
+
+musl doesnt implement secure version, so we default
+to it if configure does not detect a secure imeplementation
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+Upstream-Status: Rejected
+
+ src/basic/missing.h | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/src/basic/missing.h b/src/basic/missing.h
+index bf9b490..d6dbc7d 100644
+--- a/src/basic/missing.h
++++ b/src/basic/missing.h
+@@ -584,13 +584,14 @@ static inline int name_to_handle_at(int fd, const char *name, struct file_handle
+         return syscall(__NR_name_to_handle_at, fd, name, handle, mnt_id, flags);
+ }
+ #endif
+-
+-#ifndef HAVE_SECURE_GETENV
++#ifdef HAVE_SECURE_GETENV
+ #  ifdef HAVE___SECURE_GETENV
+ #    define secure_getenv __secure_getenv
+ #  else
+ #    error "neither secure_getenv nor __secure_getenv are available"
+ #  endif
++#else
++#  define secure_getenv getenv
+ #endif
+ 
+ #ifndef CIFS_MAGIC_NUMBER
+-- 
+2.5.2
+

meta/recipes-core/systemd/systemd_225.bb

@@ -53,6 +53,8 @@ S = "${WORKDIR}/git"
 
 SRC_URI_append_libc-uclibc = "\
             file://0001-units-Prefer-getty-to-agetty-in-console-setup-system.patch \
+            file://0022-Use-getenv-when-secure-versions-are-not-available.patch \
+            file://0001-fix-build-on-uClibc-exp10.patch \
            "
 LDFLAGS_append_libc-uclibc = " -lrt"