gpgme: Add pkg-config file

A basic gpgme.pc file is installed with gpgme which should allow the library to
be found and used using pkg-config rather than gpgme-config.

(From OE-Core rev: 066eb8fbfd90f1a5af01a8f63adbe0cd2ae8cb5c)

Signed-off-by: Paul Barker <paul@paulbarker.me.uk>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/gpgme/gpgme-1.4.3/gpgme.pc

@@ -0,0 +1,10 @@
+prefix=/usr
+libdir=${prefix}/lib
+includedir=${prefix}/include
+
+Name: gpgme
+Description: GNU Privacy Guard Made Easy
+Version: 1.4.3
+Requires:
+Libs: -L${libdir} -lgpgme -lassuan -lgpg-error
+Cflags: -I${includedir}

meta/recipes-support/gpgme/gpgme_1.4.3.bb

@@ -10,7 +10,8 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=94d55d512a9ba36caa9b7df079bae19f \
                     file://src/engine.h;endline=22;md5=4b6d8ba313d9b564cc4d4cfb1640af9d"
 
 SRC_URI = "ftp://ftp.gnupg.org/gcrypt/gpgme/gpgme-${PV}.tar.bz2 \
-           file://disable_gpgconf_check.patch"
+           file://disable_gpgconf_check.patch \
+           file://gpgme.pc"
 
 SRC_URI[md5sum] = "334e524cffa8af4e2f43ae8afe585672"
 SRC_URI[sha256sum] = "2d1cc12411753752d9c5b9037e6fd3fd363517af720154768cc7b46b60120496"
@@ -32,3 +33,8 @@ do_configure_prepend () {
 	rm -f ${S}/m4/gpg-error.m4
 	rm -f ${S}/m4/libassuan.m4
 }
+
+do_install_append () {
+        install -d ${D}${libdir}/pkgconfig
+        install -m 0644 ${WORKDIR}/gpgme.pc ${D}${libdir}/pkgconfig/
+}