Re: Build issue with OpenSSL >= 4.0

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On Sun, Jun 28, 2026 at 06:39:08PM +0200, Dennis Preiser wrote:
>Building mutt with OpenSSL >=3D 4.0 fails.
>
>| mutt_ssl.c:986:33: error: incomplete definition of type 'ASN1_IA5STRING'=
 (aka 'struct asn1_string_st')
>| /Users/dennis/sw/include/openssl/types.h:57:16: note: forward declaratio=
n of 'struct asn1_string_st'
>| mutt_ssl.c:987:53: error: incomplete definition of type 'ASN1_IA5STRING'=
 (aka 'struct asn1_string_st')
>| /Users/dennis/sw/include/openssl/types.h:57:16: note: forward declaratio=
n of 'struct asn1_string_st'
>| mutt_ssl.c:987:92: error: incomplete definition of type 'ASN1_IA5STRING'=
 (aka 'struct asn1_string_st')
>| /Users/dennis/sw/include/openssl/types.h:57:16: note: forward declaratio=
n of 'struct asn1_string_st'
>| mutt_ssl.c:989:72: error: incomplete definition of type 'ASN1_IA5STRING'=
 (aka 'struct asn1_string_st')
>| /Users/dennis/sw/include/openssl/types.h:57:16: note: forward declaratio=
n of 'struct asn1_string_st'
>
>The reason is a change in OpenSSL: the ASN1_STRING is now opaque and can
>no longer be accessed directly. Now, accessor functions must be used.
>
>See <https://openssl-library.org/post/2026-04-13-asn1_string/>
>
>The attached diff fixes this for me; something like this seems to be
>necessary for OpenSSL >=3D 4.0.

Thanks for the heads-up and patch.  I'll apply it to stable and try
release 2.4.1 this week.

--=20
Kevin J. McCarthy
GPG Fingerprint: 8975 A9B3 3AA3 7910 385C  5308 ADEF 7684 8031 6BDA

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