Fix ICU compilation on linux

CMakeLists.txt

@@ -232,6 +232,7 @@ endif()
 add_subdirectory(deps/baseconfig EXCLUDE_FROM_ALL)
 
 if(ICU_FOUND)
+    target_link_libraries(base PRIVATE ICU::data ICU::i18n ICU::io ICU::tu ICU::uc)
     target_compile_definitions(base PRIVATE -DBUILD_WITH_ICU)
 endif()
 

deps/baseconfig/CMakeLists.txt

@@ -155,7 +155,7 @@ endif()
 
 # We don't need to link anything if we have win32 threads. Affects MinGW builds primarily.
 if(CMAKE_USE_PTHREADS_INIT AND NOT CMAKE_USE_WIN32_THREADS_INIT)
-    target_link_libraries(base Threads::Threads)
+    target_link_libraries(base PRIVATE Threads::Threads)
 endif()
 
 # Check for best macro that expands to current function name.

deps/baseconfig/src/unichar.h

@@ -15,13 +15,15 @@
 #ifndef BASE_UNICHAR_H
 #define BASE_UNICHAR_H
 #include <wchar.h>
+#include <string.h>
 
 #ifdef U_CHAR
 #error U_CHAR has been defined before
 #endif
 
 #ifdef BUILD_WITH_ICU
 #include <unicode/uchar.h>
+#include <unicode/ustring.h>
 typedef UChar unichar_t;
 #define U_CHAR(str) (u##str)
 #elif defined _WIN32