Hi. I'm trying to build https://aur.archlinux.org/packages/mingw-w64-libunistring.
Libtool thinks that the installed dependency libiconv.dll.a has unknown type and refuses to build libunistring dll. The libtool script calls `file` internally to detect the type, but it suppresses the error output which makes it hard to troubleshoot: func_win32_libid () { $debug_cmd win32_libid_type=unknown win32_fileres=`file -L $1 2>/dev/null` case $win32_fileres in If I call `file` directly I can see the error: [il@arch lib]$ fakeroot file -L /usr/x86_64-w64-mingw32/lib/libiconv.dll.a /usr/bin/fakeroot: line 178: 962263 Bad system call FAKEROOTKEY=$FAKEROOTKEY LD_LIBRARY_PATH="$PATHS" LD_PRELOAD="$LIB" "$@" Yet make finishes successfully and an invalid package is built. Is there any reason to ignore non-zero exit code from external programs called by libtool? I don't understand.