Switch back to exporting dep on EXPAT because it's needed for static libs

Signed-off-by: Ryan Friedman <[email protected]>

Author: Ryanf55

cmake/exiv2Config.cmake.in

@@ -7,6 +7,10 @@ if(@EXIV2_ENABLE_PNG@) # if(EXIV2_ENABLE_PNG)
   find_dependency(ZLIB REQUIRED)
 endif()
 
+if(@EXIV2_ENABLE_XMP@) # if(EXIV2_ENABLE_XMP)
+  find_dependency(EXPAT REQUIRED)
+endif()
+
 include("${CMAKE_CURRENT_LIST_DIR}/exiv2Export.cmake")
 
 check_required_components(exiv2)

src/CMakeLists.txt

@@ -184,7 +184,7 @@ target_include_directories(exiv2lib SYSTEM PRIVATE
 
 if (EXIV2_ENABLE_XMP OR EXIV2_ENABLE_EXTERNAL_XMP)
     target_include_directories(exiv2lib PRIVATE ${EXPAT_INCLUDE_DIR})
-    target_link_libraries(exiv2lib PRIVATE $<BUILD_INTERFACE:EXPAT::EXPAT>)
+    target_link_libraries(exiv2lib PRIVATE EXPAT::EXPAT)
     list(APPEND requires_private_list "expat")
 endif()