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 firstname.lastname@example.org
Signed-off-by: Fabrice Fontaine email@example.com