use unix dir
setlocal EnableDelayedExpansion
:: build system uses non-standard env vars
-set "XCFLAGS=%CFLAGS% -I%LIBRARY_PREFIX%\\include"
+set "XCFLAGS=%CFLAGS% -I%LIBRARY_PREFIX%/include"
set "XLIBS=%LIBS%"
set "USE_SYSTEM_LIBS=yes"
set "USE_SYSTEM_JPEGXR=yes"
