Add FindXxx.cmake files to api archives

The FindXxx.cmake files are used by Goa's cmake support.

genodelabs/genode#5087

repos/libports/recipes/api/curl/content.mk

@@ -17,7 +17,10 @@ include:
 
 content: src/lib/curl
 
-content: LICENSE
+content: LICENSE FindCURL.cmake
 
 LICENSE:
 	cp $(PORT_DIR)/src/lib/curl/COPYING $@
+
+FindCURL.cmake:
+	echo 'set(CURL_FOUND True)' > $@

repos/libports/recipes/api/mesa/content.mk

@@ -17,7 +17,10 @@ include:
 	cp -r $(PORT_DIR)/include/* $@
 	cp -r $(REP_DIR)/include/EGL $@
 
-content: LICENSE
+content: LICENSE FindOpenGL.cmake
 
 LICENSE:
 	cp $(PORT_DIR)/src/lib/mesa/docs/license.rst $@
+
+Find%.cmake:
+	echo 'set($*_FOUND True)' | sed -r 's/\w+_FOUND/\U&/' > $@

repos/libports/recipes/api/qt5_base/content.mk

@@ -40,3 +40,17 @@ content: LICENSE
 
 LICENSE:
 	cp $(PORT_DIR)/src/lib/qt5/LICENSE.LGPLv3 $@
+
+CMAKE_MODULES := FindQt5Core.cmake \
+                 FindQt5Gui.cmake \
+                 FindQt5Network.cmake \
+                 FindQt5PrintSupport.cmake \
+                 FindQt5Sql.cmake \
+                 FindQt5Test.cmake \
+                 FindQt5Widgets.cmake \
+                 FindQt5Xml.cmake
+
+content: $(CMAKE_MODULES)
+
+$(CMAKE_MODULES): Find%.cmake:
+	echo 'set($*_FOUND True)' | sed -r 's/\w+_FOUND/\U&/' > $@

repos/libports/recipes/api/qt5_declarative/content.mk

@@ -15,3 +15,13 @@ content: LICENSE
 
 LICENSE:
 	cp $(PORT_DIR)/src/lib/qt5/LICENSE.LGPLv3 $@
+
+CMAKE_MODULES := FindQt5Qml.cmake \
+                 FindQt5QmlModels.cmake \
+                 FindQt5Quick.cmake \
+                 FindQt5QuickWidgets.cmake
+
+content: $(CMAKE_MODULES)
+
+$(CMAKE_MODULES): Find%.cmake:
+	echo 'set($*_FOUND True)' | sed -r 's/\w+_FOUND/\U&/' > $@

repos/libports/recipes/api/zlib/content.mk

@@ -1,4 +1,4 @@
-content: include lib/symbols/zlib LICENSE
+content: include lib/symbols/zlib LICENSE FindZLIB.cmake
 
 PORT_DIR := $(call port_dir,$(REP_DIR)/ports/zlib)
 
@@ -12,3 +12,5 @@ lib/symbols/zlib:
 LICENSE:
 	echo "zlib license" > $@
 
+FindZLIB.cmake:
+	echo 'set(ZLIB_FOUND True)' > $@