error: macro "curl_easy_setopt" passed 4 arguments, but takes just 3

[Shadowsith]

If I tried to compile some of the examples like the main example in the project README I got following error:

/usr/local/ews/ews.hpp:8465:78: error: macro "curl_easy_setopt" passed 4 arguments, but takes just 3
 8465 |             auto retcode = curl_easy_setopt(handle_.get(), option, arg1, arg2);
      |                                                                              ^
In file included from /usr/local/ews/ews.hpp:57,
                 from test.cpp:1:
/usr/include/x86_64-linux-gnu/curl/curl.h:3097: note: macro "curl_easy_setopt" defined here
 3097 | #define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
      |
In file included from test.cpp:1:
/usr/local/ews/ews.hpp: In member function ‘void ews::internal::http_request::set_option(CURLoption, T1, T2)’:
/usr/local/ews/ews.hpp:8474:39: error: cannot convert ‘CURLcode (*)(void*, CURLoption, ...)’ to ‘CURLcode’
 8474 |                                       retcode);
      |                                       ^~~~~~~
      |                                       |
      |                                       CURLcode (*)(void*, CURLoption, ...)
/usr/local/ews/ews.hpp:7740:72: note:   initializing argument 2 of ‘ews::curl_error ews::internal::make_curl_error(const string&, CURLcode, const string&)’
 7740 |     inline curl_error make_curl_error(const std::string& msg, CURLcode rescode,
      |                                                               ~~~~~~~~~^~~~~~~
/usr/local/ews/ews.hpp:8480:39: error: cannot convert ‘CURLcode (*)(void*, CURLoption, ...)’ to ‘CURLcode’
 8480 |                                       retcode);
      |                                       ^~~~~~~
      |                                       |
      |                                       CURLcode (*)(void*, CURLoption, ...)
/usr/local/ews/ews.hpp:7740:72: note:   initializing argument 2 of ‘ews::curl_error ews::internal::make_curl_error(const string&, CURLcode, const string&)’
 7740 |     inline curl_error make_curl_error(const std::string& msg, CURLcode rescode,
      |                                                               ~~~~~~~~~^~~~~~~

OS:

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 22.04.1 LTS
Release:        22.04
Codename:       jammy

curl:

$ curl --version
curl 7.81.0 (x86_64-pc-linux-gnu) libcurl/7.81.0 OpenSSL/3.0.2 zlib/1.2.11 brotli/1.0.9 zstd/1.4.8 libidn2/2.3.2 libpsl/0.21.0 (+libidn2/2.3.2) libssh/0.9.6/openssl/zlib nghttp2/1.43.0 librtmp/2.3 OpenLDAP/2.5.12
Release-Date: 2022-01-05
Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap ldaps mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: alt-svc AsynchDNS brotli GSS-API HSTS HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP UnixSockets zstd

Which libcurl version has been used as base for the project?

[Shadowsith]

I was now able to fix the error myself. I commented out the template method void set_option(CURLoption option, T1 arg1, T2 arg2) which includes curl_easy_setopt with 4 arugments in ews.hpp and since then I can compile it without errors and it works as described.

[idolum]

@Shadowsith Thank your for pointing this issue out! But it should compile without changing the code. I reopend the issue and will take a look at it.