所以,我想使用select t.*,
sum(case when time_btw > 5 then 1 else 0 end) over (partition by customer_key order by ??) as grp
from t;
,这就是我所做的:
Tsdl
SDL 2.0.5
所以我下载了apt-get
./configure && make && sudo make install
然后我创建了一个文件opam install tsdl
(以tsdl website为例):
main.ml
open Tsdl
open Result
let main () = match Sdl.init Sdl.Init.video with
| Error (`Msg e) -> Sdl.log "Init error: %s" e; exit 1
| Ok () ->
match Sdl.create_window ~w:640 ~h:480 "SDL OpenGL" Sdl.Window.opengl with
| Error (`Msg e) -> Sdl.log "Create window error: %s" e; exit 1
| Ok w ->
Sdl.delay 3000l;
Sdl.destroy_window w;
Sdl.quit ();
exit 0
let () = main ()
它有效,现在我的问题出现了:
ocamlfind ocamlopt -package tsdl -linkpkg -o main.native main.ml
我做错了什么或者我是否需要明确说明我的SDL2 lib或其他什么?
更新:
./main.native
Fatal error: exception Dl.DL_error("./main.native: undefined symbol: SDL_GetError")
更新2:
> ocamlobjinfo $(opam config var tsdl:lib)/tsdl.cmxa | grep Extra
Extra C object files: -L/usr/local/lib -Wl,-rpath,/usr/local/lib -Wl,--enable-new-dtags -lSDL2 -ltsdl
Extra C options:
> sdl2-config --libs
-L/usr/local/lib -Wl,-rpath,/usr/local/lib -Wl,--enable-new-dtags -lSDL2
更新3
> ldd ./main.native
linux-vdso.so.1 => (0x00007fff1f4c1000)
libffi.so.6 => /usr/lib/x86_64-linux-gnu/libffi.so.6 (0x00007f4aff55e000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f4aff255000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f4aff050000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f4afec87000)
/lib64/ld-linux-x86-64.so.2 (0x000055dc05e17000)
答案 0 :(得分:1)
这似乎是tsdl中的一个小问题,有关详情,请参阅此处:https://github.com/dbuenzli/tsdl/issues/38
它在master中修复。正如作者所建议你可以(现在)将其作为临时修复:
opam pin add tsdl --dev
编辑:如下面的@dbuenzli所示,这是固定在0.9.4,它正在进入opam。