[Buildroot] [PATCH 1/1] package/libevent: fix build with libressl >= 3.5.0

[Arnout Vandecappelle]

On 26/04/2022 19:34, Fabrice Fontaine wrote:
> Fix the following build failure with libressl raised since bump to
> version 3.5.2 in commit 8b216927db080b38fdbf1f8b025b6f90a89d4bc2:
> 
> In file included from bufferevent_openssl.c:68:
> bufferevent_openssl.c: In function 'bio_bufferevent_free':
> openssl-compat.h:44:28: error: invalid use of incomplete typedef 'BIO' {aka 'struct bio_st'}
>     44 | #define BIO_get_init(b) (b)->init
>        |                            ^~
> bufferevent_openssl.c:124:7: note: in expansion of macro 'BIO_get_init'
>    124 |   if (BIO_get_init(b) && BIO_get_data(b))
>        |       ^~~~~~~~~~~~
> 
> Fixes:
>   - http://autobuild.buildroot.org/results/273f9aa354a08ef3af6140b8dec086408bf5d574
> 
> Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>

  Applied to master, thanks.

  Regards,
  Arnout

> ---
>   ...define-BIO_get_init-for-LibreSSL-3-5.patch | 29 +++++++++++++++++++
>   1 file changed, 29 insertions(+)
>   create mode 100644 package/libevent/0001-Don-t-define-BIO_get_init-for-LibreSSL-3-5.patch
> 
> diff --git a/package/libevent/0001-Don-t-define-BIO_get_init-for-LibreSSL-3-5.patch b/package/libevent/0001-Don-t-define-BIO_get_init-for-LibreSSL-3-5.patch
> new file mode 100644
> index 0000000000..33c349b11d
> --- /dev/null
> +++ b/package/libevent/0001-Don-t-define-BIO_get_init-for-LibreSSL-3-5.patch
> @@ -0,0 +1,29 @@
> +From 883630f76cbf512003b81de25cd96cb75c6cf0f9 Mon Sep 17 00:00:00 2001
> +From: Theo Buehler <tb at openbsd.org>
> +Date: Sun, 21 Nov 2021 21:38:20 +0100
> +Subject: [PATCH] Don't define BIO_get_init() for LibreSSL 3.5+
> +
> +BIO_get_init() is available in LibreSSL 3.5 and later. The BIO type
> +will become opaque, so the existing macro will break the build.
> +
> +[Retrieved from:
> +https://github.com/libevent/libevent/commit/883630f76cbf512003b81de25cd96cb75c6cf0f9]
> +Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
> +---
> + openssl-compat.h | 3 ++-
> + 1 file changed, 2 insertions(+), 1 deletion(-)
> +
> +diff --git a/openssl-compat.h b/openssl-compat.h
> +index a23e34251b..f5de25539f 100644
> +--- a/openssl-compat.h
> ++++ b/openssl-compat.h
> +@@ -40,7 +40,8 @@ static inline BIO_METHOD *BIO_meth_new(int type, const char *name)
> + #endif /* (OPENSSL_VERSION_NUMBER < 0x10100000L) || \
> + 	(defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L) */
> +
> +-#if defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER >= 0x20700000L
> ++#if defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER >= 0x20700000L && \
> ++	LIBRESSL_VERSION_NUMBER < 0x30500000L
> + #define BIO_get_init(b) (b)->init
> + #endif
> +