dlucik
April 6, 2021, 12:25pm
1
Hello, Im trying use in my project binary file from CDB Interfaces Manual — CDB Interfaces 2020 (sofistik.com) .
sof_cdb_w-70.dll
sof_cdb_w_dll.lib
My code:
#[cfg(windows)]
use libloading::*;
fn main() {
unsafe {
let lib = Library::new(r"C:\Users\lukasz.dlucik\Documents\GIT\sofistikAPI\sof_cdb_w_dll.lib").unwrap();
let func: Symbol<unsafe extern fn() -> u32> = lib.get(b"sof_cdb_init").unwrap();
};
}
When i run program, i have:
thread 'main' panicked at 'called Result::unwrap() on an Err value: LoadLibraryExW { source: Os { > code: 193, kind: Other, message: "%1 is not a valid Win32 application." } }', src\main.rs:10:104RUST_BACKTRACE=1 environment variable to display a backtracetarget\debug\sofistikAPI.exe (exit code: 101)
It is posible to use libary from other language?
I believe you want to load the .dll file using libloading, not the .lib file. .lib files are generally for static linking, but I'm not sure how much support there is for statically linking external DLLs using the .lib file in Rust.
1 Like
Isn't it expected that you will load .dll file, not .lib?
dlucik
April 6, 2021, 12:46pm
4
Should I load the .dll file?
$ nm sof_cdb_w-70.dll
nm sof_cdb_w_dll.lib | rg sof_cdb_init
bjorn3
April 6, 2021, 1:09pm
5
If the DLL doesn't have symbols I am not sure that it is possible to load it at runtime. Try linking against it instead. You can use a build script for this. I think you will need to link against the .lib file and then ensure that the .dll file is in the same dir as the executable.
2 Likes
kornel
April 6, 2021, 3:31pm
6
bjorn3
April 6, 2021, 5:12pm
7
The .lib file is likely an import library, not a static library. An import library specifies the symbols in a dynamic library without actually containing the executable code. This allows for linking to an import library without having access to the dynamic library.
2 Likes
dlucik
April 6, 2021, 9:17pm
8
Litle succes
PS C:\Users\lukasz.dlucik\Documents\GIT\sofistikAPI> cargo runtarget\debug\sofistik_api.exe
All files *.h includet in examples from sofistik are commpiling.
But i dont have idea how I can call any method in Rust from sofistik API.
Here is my code:
GitLab.com
error: linking with x86_64-w64-mingw32-gcc failed: exit code: 1sofistik_api::main::h0f66112c4db15508': C:\Users\lukasz.dlucik\Documents\GIT\sofistikAPI/src\main.rs:17: undefined reference to ?sof_cdb_init@@YAHPEBDH @Z'
error: aborting due to previous error; 1506 warnings emitted
error: could not compile sofistik_api
Caused by:rustc --crate-name sofistik_api --edition=2018 src\main.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=d685e56ee3425ad0 -C extra-filename=-d685e56ee3425ad0 --out-dir C:\Users\lukasz.dlucik\Documents\GIT\sofistikAPI\target\debug\deps -C incremental=C:\Users\lukasz.dlucik\Documents\GIT\sofistikAPI\target\debug\incremental -L dependency=C:\Users\lukasz.dlucik\Documents\GIT\sofistikAPI\target\debug\deps --extern libc=C:\Users\lukasz.dlucik\Documents\GIT\sofistikAPI\target\debug\deps\liblibc-f5c104b6620f3091.rlib --extern sofistik_api=C:\Users\lukasz.dlucik\Documents\GIT\sofistikAPI\target\debug\deps\libsofistik_api-b2184dbc9b89150c.rlib (exit code: 1)
bjorn3
April 7, 2021, 10:11am
9
I believe import libraries for the MSVC toolchain (which this one likely is) don't work for the MinGW toolchain. Does it work with the MSVC toolchain? The target triple is x86_64-pc-windows-msvc. You will need to install the visual studio build tools (or visual studio in it's entirety) when using the MSVC toolchain though.
dlucik
April 8, 2021, 12:27am
10
Hello, I Have VS and MVSC. It is similar situation....
error: linking with link.exe failed: exit code: 1120@YAHPEBDH @Z) referenced in function _ZN12sofistik_api4main17hf0b649b3b291ed11E
error: aborting due to previous error; 1506 warnings emitted
error: could not compile sofistik_api
system
July 7, 2021, 12:27am
11
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