From: Thomas Petazzoni <[email protected]>

Static linking userspace programs such as nftables against libnftnl
currently doesn't work out of the box, because libnftnl is linked
against libmnl, but this isn't expressed in libnftnl pkg-config
file:

  CCLD   nft
[...]/bfin-buildroot-uclinux-uclibc/sysroot/usr/lib/libnftnl.a(table.o): In 
function `_nft_table_nlmsg_parse':
table.c:(.text+0x480): undefined reference to `_mnl_attr_parse'
table.c:(.text+0x492): undefined reference to `_mnl_attr_get_str'
table.c:(.text+0x4a8): undefined reference to `_mnl_attr_get_u32'
table.c:(.text+0x4ca): undefined reference to `_mnl_attr_get_u32'
[...]

The Libs.private field is specifically designed for such usage:

>From pkg-config documentation:

  Libs.private:

     This line should list any private libraries in use.  Private
     libraries are libraries which are not exposed through your
     library, but are needed in the case of static linking.

Therefore, this patch adds a reference to libmnl in the Libs.private
field of libnftnl pkg-config file.

Signed-off-by: Thomas Petazzoni <[email protected]>
Signed-off-by: Baruch Siach <[email protected]>
---
 libnftnl.pc.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libnftnl.pc.in b/libnftnl.pc.in
index fd5cc6ac5ca4..7fef9215c888 100644
--- a/libnftnl.pc.in
+++ b/libnftnl.pc.in
@@ -12,4 +12,5 @@ Version: @VERSION@
 Requires:
 Conflicts:
 Libs: -L${libdir} -lnftnl
+Libs.private: @LIBMNL_LIBS@
 Cflags: -I${includedir}
-- 
2.20.1

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