- add libnl

package/libnl/libnl.mk

@@ -0,0 +1,17 @@
+################################################################################
+#
+# libnl
+#
+################################################################################
+
+LIBNL_VERSION = 3.5.0
+LIBNL_DIR = libnl-$(LIBNL_VERSION)
+LIBNL_SOURCE = libnl-$(LIBNL_VERSION).tar.gz
+LIBNL_SITE = https://github.com/thom311/libnl/releases/download/libnl$(subst .,_,$(LIBNL_VERSION))
+
+LIBNL_CONF_OPTS = \
+	--disable-cli \
+	--disable-unit-tests
+
+libnl: | $(TARGET_DIR)
+	$(call autotools-package)

package/libnl/patches/0001-build-add-Libs.private-field-in-libnl-pkg-config-fil.patch

@@ -0,0 +1,30 @@
+From db0d59cd06f3ffd350379847c0885e1bfb85af0f Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Date: Sat, 7 Mar 2015 11:34:42 +0100
+Subject: [PATCH] build: add Libs.private field in libnl pkg-config file
+
+In order to support static linking, the libnl pkg-config file should
+indicate in its Libs.private field the libraries that libnl-3.0.a
+requires. The LIBS variable contains the appropriate list of
+libraries: -lm in all cases, and -lpthread when pthread support is
+enabled. This allows to statically link applications against libnl
+properly.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+---
+ libnl-3.0.pc.in | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libnl-3.0.pc.in b/libnl-3.0.pc.in
+index b87e3dc..ddbc999 100644
+--- a/libnl-3.0.pc.in
++++ b/libnl-3.0.pc.in
+@@ -7,4 +7,5 @@ Name: libnl
+ Description: Convenience library for netlink sockets
+ Version: @PACKAGE_VERSION@
+ Libs: -L${libdir} -lnl-@MAJ_VERSION@
++Libs.private: @LIBS@
+ Cflags: -I${includedir}/libnl@MAJ_VERSION@
+-- 
+2.1.0
+

package/libnl/patches/0002-Add-musl-workaround-to-the-libc-compat.h-copy.patch

@@ -0,0 +1,37 @@
+From be07fdbc9658de19304defa7538f219cd3f21ec0 Mon Sep 17 00:00:00 2001
+From: Baruch Siach <baruch@tkos.co.il>
+Date: Sun, 12 Mar 2017 08:52:20 +0200
+Subject: [PATCH] Add musl workaround to the libc-compat.h copy
+
+The libc-compat.h kernel header uses glibc specific macros to solve conflicts
+with libc provided headers. This patch makes libc-compat.h work also for musl
+libc.
+
+Future rebase note: when upstream updates libc-compat.h some additional macro
+definitions will be needed. See the Buildroot iproute2 patch
+package/iproute2/0001-Add-the-musl-workaround-to-the-libc-compat.h-copy.patch.
+
+Signed-off-by: Baruch Siach <baruch@tkos.co.il>
+---
+Upstream status: libc-compat.h is a local copy of a kernel headers. A proper
+musl fix must go to the kernel first.
+---
+ include/linux-private/linux/libc-compat.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/linux-private/linux/libc-compat.h b/include/linux-private/linux/libc-compat.h
+index 9bed5b6ae4d9..e2562a819464 100644
+--- a/include/linux-private/linux/libc-compat.h
++++ b/include/linux-private/linux/libc-compat.h
+@@ -49,7 +49,7 @@
+ #define _LIBC_COMPAT_H
+ 
+ /* We have included glibc headers... */
+-#if defined(__GLIBC__)
++#if 1
+ 
+ /* Coordinate with glibc netinet/in.h header. */
+ #if defined(_NETINET_IN_H)
+-- 
+2.11.0
+