libsecret: add patch to fix .pc file for static linking

The .pc file of libsecret needs to be adjusted to account for its
optional dependency on the gcrypt library. The patch has been
submitted upstream for inclusion.

Fixes:

  http://autobuild.buildroot.org/results/c2c/c2c6185cfbd9a0c91266c9e8a5f4221afb14930f/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

diff --git a/package/libsecret/0001-libsecret.pc-add-Libs.private-field-for-libgcrypt.patch b/package/libsecret/0001-libsecret.pc-add-Libs.private-field-for-libgcrypt.patch
new file mode 100644 (file)
index 0000000..62bc84c
--- /dev/null
+++ b/package/libsecret/0001-libsecret.pc-add-Libs.private-field-for-libgcrypt.patch
@@ -0,0 +1,38 @@
+From 754897490d9478025d174c2b1c1849305f728324 Mon Sep 17 00:00:00 2001
+From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Date: Mon, 28 Dec 2015 12:13:07 +0100
+Subject: [PATCH] libsecret.pc: add Libs.private field for libgcrypt
+
+When libgcrypt is available, libsecret links with it. When dynamic
+linking is used, there is no problem: libsecret.so has a NEEDED
+pointing to libgcrypt, so linking an application with -lsecret works
+fine. However, when doing static linking, you must specify the entire
+chain of libraries, otherwise you get unresolved symbols errors, such
+as:
+
+host/usr/arm-buildroot-linux-uclibcgnueabi/sysroot/usr/lib/libsecret-1.a(libsecret_1_la-secret-session.o): In function `request_open_session_aes':
+build/libsecret-0.18.3/libsecret/secret-session.c:99: undefined reference to `gcry_mpi_release'
+build/libsecret-0.18.3/libsecret/secret-session.c:101: undefined reference to `gcry_mpi_aprint'
+build/libsecret-0.18.3/libsecret/secret-session.c:107: undefined reference to `gcry_free'
+
+In order to solve this, we simply need to indicate in the Libs.private
+field of the .pc file that we depend on libgcrypt.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+---
+ libsecret/libsecret.pc.in | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/libsecret/libsecret.pc.in b/libsecret/libsecret.pc.in
+index 0c342ef..d99cf44 100644
+--- a/libsecret/libsecret.pc.in
++++ b/libsecret/libsecret.pc.in
+@@ -11,4 +11,5 @@ Description: GObject bindings for Secret Service API
+ Version: @VERSION@
+ Requires: glib-2.0 gobject-2.0 gio-2.0
+ Libs: -L${libdir} -lsecret-@SECRET_MAJOR@
++Libs.private: @LIBGCRYPT_LIBS@
+ Cflags: -I${includedir}/libsecret-@SECRET_MAJOR@
+-- 
+2.6.4
+