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Re: CURLOPT_WRITEFUNCTION issues - warning: curl_easy_setopt expects a curl_write_callback argument

From: Gavin Henry via curl-library <curl-library_at_lists.haxx.se>
Date: Fri, 21 Jan 2022 10:11:33 +0000

> -O2 -flto=auto -ffat-lto-objects
> -fexceptions -g -grecord-gcc-switches -pipe -Wall
> -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
> -Wp,-D_GLIBCXX_ASSERTIONS
> -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
> -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1
> -m64 -mtune=generic -fasynchronous-unwind-tables
> -fstack-clash-protection -fcf-protection -Wl,-z,relro -Wl,--as-needed
> -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld
> -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1

So RH is adding about, but it's actually only this that is triggering the error:

-flto=auto

Going to read up on what that does which causes:

error: call to ‘_curl_easy_setopt_err_write_callback’ declared with
attribute warning: curl_easy_setopt expects a curl_write_callback
argument for this option [-Werror=attribute-warning]
   60 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION,
      | ^
lto1: all warnings being treated as errors


Thanks.


-- 
Kind Regards,
Gavin Henry.
https://sentrypeer.org
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Received on 2022-01-21