Restore unshield support, and add cmake find_package for pugimxl

CMakeLists.txt

@@ -61,6 +61,8 @@ else()
     set(LIBRARIES zlibstatic ${LIBRARIES})
 endif()
 
+find_package(pugixml REQUIRED)
+
 add_library(libxiv STATIC
         src/fiinparser.cpp
         src/indexparser.cpp
@@ -75,10 +77,14 @@ add_library(libxiv STATIC
         src/mdlparser.cpp
         src/havokxmlparser.cpp)
 target_include_directories(libxiv PUBLIC include PRIVATE src)
-target_link_libraries(libxiv PUBLIC ${LIBRARIES} pugixml)
+target_link_libraries(libxiv PUBLIC ${LIBRARIES} pugixml::pugixml)
 target_link_directories(libxiv PUBLIC ${LIB_DIRS})
 target_compile_features(libxiv PUBLIC cxx_std_17)
 set_target_properties(libxiv PROPERTIES CXX_EXTENSIONS OFF)
 
+if(NOT WIN32)
+    target_compile_definitions(libxiv PUBLIC UNSHIELD_SUPPORTED)
+endif()
+
 install(TARGETS libxiv
         DESTINATION "${INSTALL_LIB_PATH}")

src/installextract.cpp

@@ -2,6 +2,7 @@
 
 #ifdef UNSHIELD_SUPPORTED
 #include <cstdio>
+#include <array>
 #include <stdexcept>
 #include <libunshield.h>
 #include <fmt/format.h>