Binding 异常Dl.Dl_错误：未定义符号：SDL_GetError

所以，我想使用

Tsdl

，下面是我所做的：

• 我找不到带有apt get的

  SDL2.0.5

  ，所以我下载了它，

  /configure&&make&&sudo make install

• opam安装tsdl

• 然后我创建了一个文件

  main.ml

  （在上给出了一个示例）：

• ocamlfind ocamlopt-package tsdl-linkpkg-o main.native main.ml

它起作用了，现在我的问题来了：

./main.native
Fatal error: exception Dl.DL_error("./main.native: undefined symbol: SDL_GetError")

我是否做错了什么，或者我是否需要明确地告诉我的SDL2库在哪里，或者其他什么

---

更新：

> 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2：

> 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)

---

更新3

lhooq@lhooq ~/tsdl $ ocamlfind ocamlopt -cclib -lSDL2 -package tsdl -linkpkg -o min.native min.ml -verbose

Effective set of compiler predicates: pkg_result,pkg_unix,pkg_bigarray,pkg_str,pkg_bytes,pkg_ctypes,pkg_ctypes.foreign.base,pkg_ctypes.foreign.unthreaded,pkg_ctypes.foreign,pkg_tsdl,autolink,native
+ ocamlopt.opt -o min.native -verbose -I /home/lhooq/.opam/4.04.0/lib/result -I /home/lhooq/.opam/4.04.0/lib/bytes -I /home/lhooq/.opam/4.04.0/lib/ctypes -I /home/lhooq/.opam/4.04.0/lib/tsdl /home/lhooq/.opam/4.04.0/lib/result/result.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/unix.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/bigarray.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/str.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-base.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-unthreaded.cmxa /home/lhooq/.opam/4.04.0/lib/tsdl/tsdl.cmxa -cclib -lSDL2 min.ml
+ as -o 'min.o' '/tmp/camlasm9ab424.s'
+ as -o '/tmp/camlstartupe796c9.o' '/tmp/camlstartup4a1081.s'
+ gcc -o 'min.native'   '-L/home/lhooq/.opam/4.04.0/lib/result' '-L/home/lhooq/.opam/4.04.0/lib/bytes' '-L/home/lhooq/.opam/4.04.0/lib/ctypes' '-L/home/lhooq/.opam/4.04.0/lib/tsdl' '-L/home/lhooq/.opam/4.04.0/lib/ocaml'  '/tmp/camlstartupe796c9.o' '/home/lhooq/.opam/4.04.0/lib/ocaml/std_exit.o' 'min.o' '/home/lhooq/.opam/4.04.0/lib/tsdl/tsdl.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-unthreaded.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-base.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/str.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/bigarray.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/unix.a' '/home/lhooq/.opam/4.04.0/lib/result/result.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/stdlib.a' '-L/usr/local/lib' '-Wl,-rpath,/usr/local/lib' '-Wl,--enable-new-dtags' '-lSDL2' '-ltsdl' '-Wl,--no-as-needed' '-lffi' '-lctypes-foreign-base_stubs' '-Wl,--no-as-needed' '-lffi' '-lctypes_stubs' '-Wl,--no-as-needed' '-lcamlstr' '-lbigarray' '-lunix' '-lSDL2' '/home/lhooq/.opam/4.04.0/lib/ocaml/libasmrun.a' -lm  -ldl

lhooq@lhooq ~/tsdl $ ocamlfind ocamlopt -package tsdl -linkpkg -o min.native min.ml -verbose

Effective set of compiler predicates: pkg_result,pkg_unix,pkg_bigarray,pkg_str,pkg_bytes,pkg_ctypes,pkg_ctypes.foreign.base,pkg_ctypes.foreign.unthreaded,pkg_ctypes.foreign,pkg_tsdl,autolink,native
+ ocamlopt.opt -o min.native -verbose -I /home/lhooq/.opam/4.04.0/lib/result -I /home/lhooq/.opam/4.04.0/lib/bytes -I /home/lhooq/.opam/4.04.0/lib/ctypes -I /home/lhooq/.opam/4.04.0/lib/tsdl /home/lhooq/.opam/4.04.0/lib/result/result.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/unix.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/bigarray.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/str.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-base.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-unthreaded.cmxa /home/lhooq/.opam/4.04.0/lib/tsdl/tsdl.cmxa min.ml
+ as -o 'min.o' '/tmp/camlasm201bd8.s'
+ as -o '/tmp/camlstartup7113e2.o' '/tmp/camlstartup4724f2.s'
+ gcc -o 'min.native'   '-L/home/lhooq/.opam/4.04.0/lib/result' '-L/home/lhooq/.opam/4.04.0/lib/bytes' '-L/home/lhooq/.opam/4.04.0/lib/ctypes' '-L/home/lhooq/.opam/4.04.0/lib/tsdl' '-L/home/lhooq/.opam/4.04.0/lib/ocaml'  '/tmp/camlstartup7113e2.o' '/home/lhooq/.opam/4.04.0/lib/ocaml/std_exit.o' 'min.o' '/home/lhooq/.opam/4.04.0/lib/tsdl/tsdl.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-unthreaded.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-base.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/str.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/bigarray.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/unix.a' '/home/lhooq/.opam/4.04.0/lib/result/result.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/stdlib.a' '-L/usr/local/lib' '-Wl,-rpath,/usr/local/lib' '-Wl,--enable-new-dtags' '-lSDL2' '-ltsdl' '-Wl,--no-as-needed' '-lffi' '-lctypes-foreign-base_stubs' '-Wl,--no-as-needed' '-lffi' '-lctypes_stubs' '-Wl,--no-as-needed' '-lcamlstr' '-lbigarray' '-lunix' '/home/lhooq/.opam/4.04.0/lib/ocaml/libasmrun.a' -lm  -ldl

---

这似乎是tsdl中的一个小问题，有关更多信息，请参阅：

它在master中是固定的。正如作者所建议的，您可以（目前）将此作为临时修复：

opam引脚添加tsdl--dev

---

编辑：如下面的@dbuenzli所示，这是在0.9.4中修复的，它正在前往opam。

包名是

libsdl2 dev

。是的，我知道，但版本是

2.0.4

。看起来无法找到sdl库。请您报告一下：

ocamlobjinfo$（opam-config-var-tsdl:lib）/tsdl.cmxa | grep-Extra

和

sdl2-config-libs

的输出，Debian存储库再次罢工。

makeinstall

为您提供了什么？一堆

.so

文件？您确定

/usr/local/lib

在

rpath

中吗？您还可以检查一下

/usr/local/lib/libSDL2.so

是否存在。通过调用

LD_LIBRARY\u PATH=/usr/local/lib./main.native

，它是否可以工作？谢谢@esl的帮助。请您补充一下，这在0.9.4中已得到修复，该版本正在向opam回购（合并可能需要一些时间，因为我同时正在清理tsdl包depText周围的一些内容）

lhooq@lhooq ~/tsdl $ ocamlfind ocamlopt -cclib -lSDL2 -package tsdl -linkpkg -o min.native min.ml -verbose

Effective set of compiler predicates: pkg_result,pkg_unix,pkg_bigarray,pkg_str,pkg_bytes,pkg_ctypes,pkg_ctypes.foreign.base,pkg_ctypes.foreign.unthreaded,pkg_ctypes.foreign,pkg_tsdl,autolink,native
+ ocamlopt.opt -o min.native -verbose -I /home/lhooq/.opam/4.04.0/lib/result -I /home/lhooq/.opam/4.04.0/lib/bytes -I /home/lhooq/.opam/4.04.0/lib/ctypes -I /home/lhooq/.opam/4.04.0/lib/tsdl /home/lhooq/.opam/4.04.0/lib/result/result.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/unix.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/bigarray.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/str.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-base.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-unthreaded.cmxa /home/lhooq/.opam/4.04.0/lib/tsdl/tsdl.cmxa -cclib -lSDL2 min.ml
+ as -o 'min.o' '/tmp/camlasm9ab424.s'
+ as -o '/tmp/camlstartupe796c9.o' '/tmp/camlstartup4a1081.s'
+ gcc -o 'min.native'   '-L/home/lhooq/.opam/4.04.0/lib/result' '-L/home/lhooq/.opam/4.04.0/lib/bytes' '-L/home/lhooq/.opam/4.04.0/lib/ctypes' '-L/home/lhooq/.opam/4.04.0/lib/tsdl' '-L/home/lhooq/.opam/4.04.0/lib/ocaml'  '/tmp/camlstartupe796c9.o' '/home/lhooq/.opam/4.04.0/lib/ocaml/std_exit.o' 'min.o' '/home/lhooq/.opam/4.04.0/lib/tsdl/tsdl.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-unthreaded.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-base.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/str.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/bigarray.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/unix.a' '/home/lhooq/.opam/4.04.0/lib/result/result.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/stdlib.a' '-L/usr/local/lib' '-Wl,-rpath,/usr/local/lib' '-Wl,--enable-new-dtags' '-lSDL2' '-ltsdl' '-Wl,--no-as-needed' '-lffi' '-lctypes-foreign-base_stubs' '-Wl,--no-as-needed' '-lffi' '-lctypes_stubs' '-Wl,--no-as-needed' '-lcamlstr' '-lbigarray' '-lunix' '-lSDL2' '/home/lhooq/.opam/4.04.0/lib/ocaml/libasmrun.a' -lm  -ldl

lhooq@lhooq ~/tsdl $ ocamlfind ocamlopt -package tsdl -linkpkg -o min.native min.ml -verbose

Effective set of compiler predicates: pkg_result,pkg_unix,pkg_bigarray,pkg_str,pkg_bytes,pkg_ctypes,pkg_ctypes.foreign.base,pkg_ctypes.foreign.unthreaded,pkg_ctypes.foreign,pkg_tsdl,autolink,native
+ ocamlopt.opt -o min.native -verbose -I /home/lhooq/.opam/4.04.0/lib/result -I /home/lhooq/.opam/4.04.0/lib/bytes -I /home/lhooq/.opam/4.04.0/lib/ctypes -I /home/lhooq/.opam/4.04.0/lib/tsdl /home/lhooq/.opam/4.04.0/lib/result/result.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/unix.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/bigarray.cmxa /home/lhooq/.opam/4.04.0/lib/ocaml/str.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-base.cmxa /home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-unthreaded.cmxa /home/lhooq/.opam/4.04.0/lib/tsdl/tsdl.cmxa min.ml
+ as -o 'min.o' '/tmp/camlasm201bd8.s'
+ as -o '/tmp/camlstartup7113e2.o' '/tmp/camlstartup4724f2.s'
+ gcc -o 'min.native'   '-L/home/lhooq/.opam/4.04.0/lib/result' '-L/home/lhooq/.opam/4.04.0/lib/bytes' '-L/home/lhooq/.opam/4.04.0/lib/ctypes' '-L/home/lhooq/.opam/4.04.0/lib/tsdl' '-L/home/lhooq/.opam/4.04.0/lib/ocaml'  '/tmp/camlstartup7113e2.o' '/home/lhooq/.opam/4.04.0/lib/ocaml/std_exit.o' 'min.o' '/home/lhooq/.opam/4.04.0/lib/tsdl/tsdl.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-unthreaded.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes-foreign-base.a' '/home/lhooq/.opam/4.04.0/lib/ctypes/ctypes.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/str.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/bigarray.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/unix.a' '/home/lhooq/.opam/4.04.0/lib/result/result.a' '/home/lhooq/.opam/4.04.0/lib/ocaml/stdlib.a' '-L/usr/local/lib' '-Wl,-rpath,/usr/local/lib' '-Wl,--enable-new-dtags' '-lSDL2' '-ltsdl' '-Wl,--no-as-needed' '-lffi' '-lctypes-foreign-base_stubs' '-Wl,--no-as-needed' '-lffi' '-lctypes_stubs' '-Wl,--no-as-needed' '-lcamlstr' '-lbigarray' '-lunix' '/home/lhooq/.opam/4.04.0/lib/ocaml/libasmrun.a' -lm  -ldl