[Buildroot] [PATCH 6/6] package/libopenssl: add new configuration options

[Dario Binacchi <dario.binacchi@amarulasolutions.com>]

The transition from version 1.1 to 3.0.9, and subsequently to 3.3.1,
added new compilation options. This led to a significant increase in the
size of the library. These options allow user to disable these features
to obtain a smaller library size.

To ensure backward compatibility, all items are selected by default.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---
 package/libopenssl/Config.in     | 106 +++++++++++++++++++++++++++++++
 package/libopenssl/libopenssl.mk |  14 ++++
 2 files changed, 120 insertions(+)

diff --git a/package/libopenssl/Config.in b/package/libopenssl/Config.in
index 0c8db52e2e1d..036b68241864 100644
--- a/package/libopenssl/Config.in
+++ b/package/libopenssl/Config.in
@@ -133,4 +133,110 @@ config BR2_PACKAGE_LIBOPENSSL_ENABLE_COMP
 	bool "enable compression"
 	default y
 
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_ARGON2
+	bool "enable ARGON2"
+	default y
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_CACHED_FETCH
+	bool "enable cached fetch"
+	default y
+	help
+	  Cache algorithms when they are fetched from a provider.
+	  Normally, a provider indicates if the algorithms it supplies
+	  can be cached or not. Using this option will reduce run-time
+	  memory usage but it also introduces a significant performance
+	  penalty. This option is primarily designed to help with
+	  detecting incorrect reference counting.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_CMP
+	bool "enable CMP"
+	default y
+	help
+	  Build support for Certificate Management Protocol (CMP) and
+	  Certificate Request Message Format (CRMF).
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_THREAD_POOL
+	bool "enable thread pool"
+	default y
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	help
+	  Build with thread pool functionality. If enabled, OpenSSL
+	  algorithms may use the thread pool to perform parallel
+	  computation. This option in itself does not enable OpenSSL
+	  to spawn new threads. Currently the only supported thread
+	  pool mechanism is the default thread pool.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_DEFAULT_THREAD_POOL
+	bool "enable default thread pool"
+	default y
+	depends on BR2_PACKAGE_LIBOPENSSL_ENABLE_THREAD_POOL
+	help
+	  Build with default thread pool functionality. If enabled,
+	  OpenSSL may create and manage threads up to a maximum number
+	  of threads authorized by the application. Supported on POSIX
+	  compliant platforms.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_ECX
+	bool "enable ECX"
+	default y
+	help
+	  Build with ECX support. Disabling this option can be used
+	  to disable support for X25519, X448, and EdDSA.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_LOADER_ENGINE
+	bool "enable 'loader_attic' engine"
+	default y
+	depends on BR2_PACKAGE_LIBOPENSSL_DYNAMIC_ENGINE
+	help
+	  Build with 'loader_attic' engine support, which is meant
+	  just for internal OpenSSL testing purposes and supports
+	  loading keys, parameters, certificates, and CRLs from files.
+	  When this engine is used, files with such credentials are
+	  read via this engine.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_PADLOCK_ENGINE
+	bool "enable padlock engine"
+	default y
+	help
+	  Build the padlock engine.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_MODULE
+	bool "enable modules"
+	default y
+	help
+	  Build modules.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_QUIC
+	bool "enable QUIC"
+	default y
+	help
+	  Build with QUIC support.
+
+config BR2_PACKAGE_LIBOPENSSL_SECURE_MEMORY
+	bool "enable secure memory"
+	default y
+	help
+	  Build with secure memory support.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_SIV
+	bool "enable SIV"
+	default y
+	help
+	  Build with RFC5297 AES-SIV support.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_SM2_PRECOMP_TABLE
+	bool "enable SM2 precomputed table"
+	default y
+	depends on BR2_aarch64
+	help
+	  Enable using the SM2 precomputed table. Disabling this option
+	  makes the library smaller.
+
+config BR2_PACKAGE_LIBOPENSSL_ENABLE_SSL_TRACE
+	bool "enable SSL trace"
+	default y
+	help
+	  Build with SSL Trace support. Disabling this option may
+	  provide a small reduction in libssl binary size.
+
 endif # BR2_PACKAGE_LIBOPENSSL
diff --git a/package/libopenssl/libopenssl.mk b/package/libopenssl/libopenssl.mk
index 89a9189bb851..ab8454657ebf 100644
--- a/package/libopenssl/libopenssl.mk
+++ b/package/libopenssl/libopenssl.mk
@@ -107,6 +107,20 @@ define LIBOPENSSL_CONFIGURE_CMDS
 			$(if $(BR2_PACKAGE_LIBOPENSSL_UNSECURE),,no-unit-test no-crypto-mdebug no-autoerrinit) \
 			$(if $(BR2_PACKAGE_LIBOPENSSL_DYNAMIC_ENGINE),,no-dynamic-engine ) \
 			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_COMP),,no-comp) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_ARGON2),,no-argon2) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_CACHED_FETCH),,no-cached-fetch) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_CMP),,no-cmp) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_THREAD_POOL),,no-thread-pool) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_DEFAULT_THREAD_POOL),,no-default-thread-pool) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_ECX),,no-ecx) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_LOADER_ENGINE),,no-loadereng) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_PADLOCK_ENGINE),,no-padlockeng) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_MODULE),,no-module) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_QUIC),,no-quic) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_SECURE_MEMORY),,no-secure-memory) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_SIV),,no-siv) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_SM2_PRECOMP_TABLE),,no-sm2-precomp) \
+			$(if $(BR2_PACKAGE_LIBOPENSSL_ENABLE_SSL_TRACE),,no-ssl-trace) \
 			$(if $(BR2_STATIC_LIBS),zlib,zlib-dynamic) \
 			$(if $(BR2_STATIC_LIBS),no-dso)
 endef
-- 
2.43.0

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