qca: install pkg-config file and add test

N.B. test fails with undefined references

src/qca-1-fixes.patch

@@ -0,0 +1,23 @@
+This file is part of MXE. See LICENSE.md for licensing information.
+
+Contains ad hoc patches for cross building.
+
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Tony Theodore <tonyt@logyst.com>
+Date: Sun, 26 Mar 2017 12:36:55 +1100
+Subject: [PATCH] qca: add INSTAL_PKGCONFIG option
+
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 1111111..2222222 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -233,7 +233,7 @@ foreach(PATH QCA_PLUGINS_INSTALL_DIR
+   endif()
+ endforeach()
+ 
+-if(NOT WIN32)
++if(NOT WIN32 OR INSTAL_PKGCONFIG)
+   if(OSX_FRAMEWORK)
+     set(PKGCONFIG_CFLAGS "-F\${libdir} -I\${includedir}")
+     set(PKGCONFIG_LIBS "-F\${libdir} -framework ${QCA_LIB_NAME}")

src/qca.mk

@@ -15,6 +15,7 @@ define $(PKG)_BUILD
         -DBUILD_TOOLS=OFF \
         -DUSE_RELATIVE_PATHS=OFF \
         -DBUILD_PLUGINS="auto" \
+        -DINSTAL_PKGCONFIG=ON \
         -DQCA_MAN_INSTALL_DIR="$(BUILD_DIR)/null"
     $(MAKE) -C '$(BUILD_DIR)' -j $(JOBS)
     $(MAKE) -C '$(BUILD_DIR)' -j 1 install
@@ -24,5 +25,12 @@ define $(PKG)_BUILD
         cd '$(BUILD_DIR)/test-qca' && '$(PREFIX)/$(TARGET)/qt5/bin/qmake' '$(PWD)/src/qca-test.pro'
         $(MAKE) -C '$(BUILD_DIR)/test-qca' -j $(JOBS) $(BUILD_TYPE)
         $(INSTALL) -m755 '$(BUILD_DIR)/test-qca/$(BUILD_TYPE)/test-qca5.exe' '$(PREFIX)/$(TARGET)/bin/')
+
+    # compile test
+    '$(TARGET)-g++' \
+        -W -Wall -Werror \
+        '$(SOURCE_DIR)/examples/base64test/base64test.cpp' \
+        -o '$(PREFIX)/$(TARGET)/bin/test-$(PKG).exe' \
+        `'$(TARGET)-pkg-config' qca2-qt5 --cflags --libs`
 endef