5.5.0 beta fails to build with LibreSSL

x86_64-pc-linux-gnu-g++ -c -include .pch/Qt5Network -pipe -O2 -O2 -fvisibility=hidden -fvisibility-inlines-hidden -std=c++0x -fno-exc
eptions -Wall -W -D_REENTRANT -fPIC -DQT_NO_TSLIB -DQT_NO_LIBINPUT -DQT_NO_USING_NAMESPACE -DQT_BUILD_NETWORK_LIB -DQT_BUILDING_QT -D
QT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED
_BEFORE=0x050000 -DQT_USE_SYSTEM_PROXIES -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_CORE_LIB -I.
-isystem /usr/x86_64-pc-linux-gnu/include/mysql -I../../include -I../../include/QtNetwork -I../../include/QtNetwork/5.5.0 -I../../in
clude/QtNetwork/5.5.0/QtNetwork -Ikernel -I../../include/QtCore/5.5.0 -I../../include/QtCore/5.5.0/QtCore -I../../include/QtCore -I.m
oc -I../../mkspecs/linux-g++ -o .obj/qsslcontext_openssl.o ssl/qsslcontext_openssl.cpp
x86_64-pc-linux-gnu-g++ -c -include .pch/Qt5Network -pipe -O2 -O2 -fvisibility=hidden -fvisibility-inlines-hidden -std=c++0x -fno-exc
eptions -Wall -W -D_REENTRANT -fPIC -DQT_NO_TSLIB -DQT_NO_LIBINPUT -DQT_NO_USING_NAMESPACE -DQT_BUILD_NETWORK_LIB -DQT_BUILDING_QT -D
QT_NO_CAST_TO_ASCII -DQT_ASCII_CAST_WARNINGS -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER -DQT_DEPRECATED_WARNINGS -DQT_DISABLE_DEPRECATED
_BEFORE=0x050000 -DQT_USE_SYSTEM_PROXIES -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_CORE_LIB -I.
-isystem /usr/x86_64-pc-linux-gnu/include/mysql -I../../include -I../../include/QtNetwork -I../../include/QtNetwork/5.5.0 -I../../in
clude/QtNetwork/5.5.0/QtNetwork -Ikernel -I../../include/QtCore/5.5.0 -I../../include/QtCore/5.5.0/QtCore -I../../include/QtCore -I.m
oc -I../../mkspecs/linux-g++ -o .obj/qsslellipticcurve_openssl.o ssl/qsslellipticcurve_openssl.cpp
ssl/qsslcontext_openssl.cpp: In static member function 'static QSslContext* QSslContext::fromConfiguration(QSslSocket::SslMode, const
QSslConfiguration&, bool)':
ssl/qsslcontext_openssl.cpp:347:33: error: 'SSL_CTRL_SET_CURVES' was not declared in this scope
SSL_CTRL_SET_CURVES,
^
Makefile:22091: recipe for target '.obj/qsslcontext_openssl.o' failed
make[2]: *** [.obj/qsslcontext_openssl.o] Error 1
make[2]: *** Waiting for unfinished jobs....

No idea if there's an equivalent for that define or if there's a reason libressl doesn't have it.