[OE-core] [PATCH 1/8] libnss-mdns: Check for nss.h before using

[Khem Raj]

nss.h is not available on all libcs
so check for it and if its not there provide
the needed data types.

Fixed buil with musl
../../nss-mdns-0.10/src/nss.c:32:17: fatal error: nss.h: No such file or
directory
compilation terminated.
make[2]: *** [libnss_mdns4_la-nss.lo] Error 1

Signed-off-by: Khem Raj <raj.khem at gmail.com>
---
 .../libnss-mdns/0001-check-for-nss.h.patch         | 56 ++++++++++++++++++++++
 .../libnss-mdns/libnss-mdns_0.10.bb                |  4 +-
 2 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 meta/recipes-connectivity/libnss-mdns/libnss-mdns/0001-check-for-nss.h.patch

diff --git a/meta/recipes-connectivity/libnss-mdns/libnss-mdns/0001-check-for-nss.h.patch b/meta/recipes-connectivity/libnss-mdns/libnss-mdns/0001-check-for-nss.h.patch
new file mode 100644
index 0000000..f63eb90
--- /dev/null
+++ b/meta/recipes-connectivity/libnss-mdns/libnss-mdns/0001-check-for-nss.h.patch
@@ -0,0 +1,56 @@
+From bdf01a581d58eb5340e9238d143dbcac9db5b11c Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem at gmail.com>
+Date: Sat, 30 Jan 2016 19:29:45 +0000
+Subject: [PATCH] check for nss.h
+
+nss.h may not available on all libc implementations, e.g. musl does not
+have this header, this patch detects nss.h presence and defines the data
+types that are required if nss.h is missing on platform
+
+Signed-off-by: Khem Raj <raj.khem at gmail.com>
+---
+Upstream-Status: Pending
+
+ configure.ac |  2 +-
+ src/nss.c    | 11 +++++++++++
+ 2 files changed, 12 insertions(+), 1 deletion(-)
+
+diff --git a/configure.ac b/configure.ac
+index aa66bc6..ce19b07 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -71,7 +71,7 @@ AC_PROG_LIBTOOL
+ 
+ # Checks for header files.
+ AC_HEADER_STDC
+-AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h sys/time.h unistd.h nss.h sys/ioctl.h])
++AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h netdb.h netinet/in.h stdlib.h string.h sys/socket.h sys/time.h unistd.h nss.h sys/ioctl.h nss.h])
+ 
+ # Checks for typedefs, structures, and compiler characteristics.
+ AC_C_CONST
+diff --git a/src/nss.c b/src/nss.c
+index e48e315..406733b 100644
+--- a/src/nss.c
++++ b/src/nss.c
+@@ -29,7 +29,18 @@
+ #include <assert.h>
+ #include <netdb.h>
+ #include <sys/socket.h>
++#ifdef HAVE_NSS_H
+ #include <nss.h>
++#else
++enum nss_status {
++    NSS_STATUS_TRYAGAIN = -2,
++    NSS_STATUS_UNAVAIL,
++    NSS_STATUS_NOTFOUND,
++    NSS_STATUS_SUCCESS,
++    NSS_STATUS_RETURN
++};
++#endif
++
+ #include <stdio.h>
+ #include <stdlib.h>
+ 
+-- 
+2.7.0
+
diff --git a/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb b/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb
index 0b936ef..8d2feec 100644
--- a/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb
+++ b/meta/recipes-connectivity/libnss-mdns/libnss-mdns_0.10.bb
@@ -8,7 +8,9 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=2d5025d4aa3495befef8f17206a5b0a1"
 DEPENDS = "avahi"
 PR = "r7"
 
-SRC_URI = "http://0pointer.de/lennart/projects/nss-mdns/nss-mdns-${PV}.tar.gz"
+SRC_URI = "http://0pointer.de/lennart/projects/nss-mdns/nss-mdns-${PV}.tar.gz \
+           file://0001-check-for-nss.h.patch \
+           "
 
 SRC_URI[md5sum] = "03938f17646efbb50aa70ba5f99f51d7"
 SRC_URI[sha256sum] = "1e683c2e7c3921814706d62fbbd3e9cbf493a75fa00255e0e715508d8134fa6d"
-- 
2.7.0