[Pkg-openssl-devel] Bug#1138447: llama.cpp: FTBFS with openssl 4.0

[Sebastian Andrzej Siewior]

Package: llama.cpp
Version: 8681+dfsg-1
Severity: normal
Tags: sid
control: affects -1 src:openssl
User: pkg-openssl-devel at lists.alioth.debian.org
Usertags: openssl-4.0

OpenSSL 4.0 is in experimental. This package fails to build against it:

| [ 34%] Building CXX object vendor/cpp-httplib/CMakeFiles/cpp-httplib.dir/httplib.cpp.o
| cd /build/reproducible-path/llama.cpp-8681+dfsg/obj-x86_64-linux-gnu/vendor/cpp-httplib && /usr/bin/c++ -DCPPHTTPLIB_FORM_URL_ENCODED_PAYLOAD_MAX_LENGTH=1048576 -DCPPHTTPLIB_LISTEN_BACKLOG=512 -DCPPHTTPLIB_OPENSSL_SUPPORT -DCPPHTTPLIB_REQUEST_URI_MAX_LENGTH=32768 -DCPPHTTPLIB_TCP_NODELAY=1  -g -O2 -ffile-prefix-map=/build/reproducible-path/llama.cpp-8681+dfsg=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -O2 -g -DNDEBUG -Wmissing-declarations -Wmissing-noreturn -Wall -Wextra -Wpedantic -Wcast-qual -Wno-unused-function -Wno-array-bounds -Wextra-semi -w -MD -MT vendor/cpp-httplib/CMakeFiles/cpp-httplib.dir/httplib.cpp.o -MF CMakeFiles/cpp-httplib.dir/httplib.cpp.o.d -o CMakeFiles/cpp-httplib.dir/httplib.cpp.o -c /build/reproducible-path/llama.cpp-8681+dfsg/vendor/cpp-httplib/httplib.cpp
| /build/reproducible-path/llama.cpp-8681+dfsg/vendor/cpp-httplib/httplib.cpp: In function ‘stack_st_X509_NAME* httplib::tls::impl::create_client_ca_list_from_pem(const char*)’:
| /build/reproducible-path/llama.cpp-8681+dfsg/vendor/cpp-httplib/httplib.cpp:12574:44: error: invalid conversion from ‘const X509_NAME*’ {aka ‘const X509_name_st*’} to ‘X509_NAME*’ {aka ‘X509_name_st*’} [-fpermissive]
| 12574 |     X509_NAME *name = X509_get_subject_name(cert);
|       |                       ~~~~~~~~~~~~~~~~~~~~~^~~~~~
|       |                                            |
|       |                                            const X509_NAME* {aka const X509_name_st*}
| make[3]: *** [vendor/cpp-httplib/CMakeFiles/cpp-httplib.dir/build.make:82: vendor/cpp-httplib/CMakeFiles/cpp-httplib.dir/httplib.cpp.o] Error 1
| make[3]: Leaving directory '/build/reproducible-path/llama.cpp-8681+dfsg/obj-x86_64-linux-gnu'


Full buildlog
 	https://breakpoint.cc/openssl-rebuild/logs-4/attempted/llama.cpp_8681+dfsg-1_amd64-2026-04-19T10:42:24Z

Sebastian