Greeings!

My c to d header wrapper file curl_d.c (just 2 lines):

#include <curl/curl.h>
#include <windows.h> //seems with or without this doesn't matter

Trying A: My main c file :direct_call_c.c:

#include <stdio.h>
#include <string.h>

#include "curl_d.c"

{...}

Which means unsolved external symbos _InterlockedExchangeAA...

Trying B: D code test01.d:
import core.stdc.stdio;
import curl_d;
{...}

The same c code in pure c using msvc/gcc is just fine with providing only curl.lib,compiles and runs as expected.
In D here,what I was missing to provide?I tried to add many many windows libs like winspool.lib ws2_32.lib wsock32.lib websocket.lib advapi32.lib advpack.lib crypt32.lib icm32.lib icu.lib iepmapi.lib httpapi.lib kernel32.lib mapi32.lib mi.lib mincore.lib mmc.lib msi.lib msxml6.lib normaliz.lib nt.lib ntdll.lib winhttp.lib wininet.lib wiaguid.lib wer.lib wecapi.lib webauthn.lib vssapi.lib wldap32.lib wmip.lib wmiutils.lib wsnmp32.lib wtsapi32.lib,even ucrt.lib .... but it doesn't make any sense.

So what's the real issue behind?

Anyone help on this would be appreciated.

On Thursday, 22 February 2024 at 01:23:36 UTC, ptcute wrote:

According to the windows documentation, you'll need: Kernel32.lib

See: https://learn.microsoft.com/en-us/windows/win32/api/winnt/nf-winnt-interlockedexchange

On Thursday, 22 February 2024 at 13:24:45 UTC, Danny Arends wrote:

Thanks a lot for the help.But for Kernel32.lib and others,I've already provide,and I also searched online for all those unsolved symbol related libs and heards,no clue at all at this moment.

Regards,
phcute

Wich version of visual studio you have? From what i could find online, it could be due to having an older version, try to update it if it's too old

On Friday, 23 February 2024 at 11:32:15 UTC, ryuukk_ wrote:

Sorry,forgot to mention this,it is:
Windows 10 64bit + dmd 2.106 + VS Community 2019 .

On Thursday, 22 February 2024 at 01:23:36 UTC, ptcute wrote:

They are MSVC compiler intrinsics. (https://issues.dlang.org/show_bug.cgi?id=23894)

Surprisingly I got it working by just replacing some includes with definitions in "curl/curl.h".

Change:

#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__CYGWIN__)
#if !(defined(_WINSOCKAPI_) || defined(_WINSOCK_H) || \
      defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H))
/* The check above prevents the winsock2 inclusion if winsock.h already was
   included, since they can't co-exist without problems */
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#endif

to:

#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__CYGWIN__)
#if !(defined(_WINSOCKAPI_) || defined(_WINSOCK_H) || \
      defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H))
typedef unsigned short  u_short;
typedef unsigned int    u_int;

typedef struct sockaddr {
#if (_WIN32_WINNT < 0x0600)
    u_short sa_family;
#else
    ADDRESS_FAMILY sa_family;           // Address family.
#endif //(_WIN32_WINNT < 0x0600)
    char sa_data[14];                   // Up to 14 bytes of direct address.
} SOCKADDR;

#if(_WIN32_WINNT >= 0x0501)
typedef unsigned __int64 u_int64;
#endif //(_WIN32_WINNT >= 0x0501)

#if  defined(_WIN64)
typedef unsigned __int64 SOCKET;
#else
typedef unsigned int SOCKET;
#endif

#ifndef FD_SETSIZE
#define FD_SETSIZE      64
#endif /* FD_SETSIZE */

typedef struct fd_set {
        u_int fd_count;               /* how many are SET? */
        SOCKET  fd_array[FD_SETSIZE];   /* an array of SOCKETs */
} fd_set;
#endif
#endif

At least this example program (https://curl.se/libcurl/c/getinfo.html) works fine.

On Sunday, 25 February 2024 at 10:23:26 UTC, DUser wrote:

to:
```c

At least this example program (https://curl.se/libcurl/c/getinfo.html) works fine.

Thank you for the help.

I tried to modify the curl.h header exactly followinging the above information and with the above mentioned simple curl demo,unfortunately the error message are the same.

On Sunday, 25 February 2024 at 13:36:43 UTC, ptcute wrote:

Did you remove the "#include <windows.h>" directive from your wrapper module?

On Sunday, 25 February 2024 at 21:48:01 UTC, DUser wrote:

No,and yes,now :)
It compiles and runs as expected,another send mail example also works great.

To summary,to write a reminder to myself,and a very simple reference to anybody who may encounter this issue and try to fix it---
Environment:Windows 10 64bit,DMD 2.106,VS Community 2019.
1.Modify curl.h as described above;
2.D wrapper file curl_d.c to curl.h:

#include <stdio.h>

//in my system include string.h is required,
//otherwise dmd complains strlen and memcpy is not defined
#include <string.h>

//in my system #include <curl/curl.h> dosn't work,although
//curl ,curl/include,curl/lib is already in system enviroment path
//provide curl.h path relative to this wrapper
#include "include/curl/curl.h"

3.main.c source file:
#include <stdio.h>
#include "curl_d.c"
int main(void){ return 0;}

4.compile with :dmd -m64 main.c curl_d.c curl.lib
That is it.
5.main.d source file:
import core.stdc.stdio;
import curl_d;

//otherwise 2 printf candidates conflict in my system
alias printf=core.stdc.stdio.printf;.
int main(){ return 0;}
6.compile with dmd:dmd -m64 main.d curl_d.c curl.lib