external/MbedTLS/0001-Add-capability-to-build-libmbedcrypto-only.patch

From d225c9ba98e8aafdd462bdff3f8159886a89e1d3 Mon Sep 17 00:00:00 2001
From: Gyorgy Szing <Gyorgy.Szing@arm.com>
Date: Tue, 28 Mar 2023 18:20:44 +0200
Subject: [PATCH] Add capability to build libmbedcrypto only

Introduce the CRYPTO_ONLY option which configures cmake to build only
libmbedcrypto.

Upstream-status: Invalid [other]
  - This is a Trusted Services specific change, there is not intention
    to upstream this change.

Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com>
Signed-off-by: Balint Dobszay <balint.dobszay@arm.com>
---
 library/CMakeLists.txt | 60 ++++++++++++++++++++++++++++--------------
 1 file changed, 40 insertions(+), 20 deletions(-)

diff --git a/library/CMakeLists.txt b/library/CMakeLists.txt
index 535988303..a70848e82 100644
--- a/library/CMakeLists.txt
+++ b/library/CMakeLists.txt
@@ -2,6 +2,7 @@ option(USE_STATIC_MBEDTLS_LIBRARY "Build mbed TLS static library." ON)
 option(USE_SHARED_MBEDTLS_LIBRARY "Build mbed TLS shared library." OFF)
 option(LINK_WITH_PTHREAD "Explicitly link mbed TLS library to pthread." OFF)
 option(LINK_WITH_TRUSTED_STORAGE "Explicitly link mbed TLS library to trusted_storage." OFF)
+option(CRYPTO_ONLY "Build mbedcrypto library only." On)

 # Set the project root directory if it's not already defined, as may happen if
 # the library folder is included directly by a parent project, without
@@ -250,7 +251,11 @@ if (USE_STATIC_MBEDTLS_LIBRARY)
     set(mbedcrypto_static_target ${mbedcrypto_target})
 endif()

-set(target_libraries ${mbedcrypto_target} ${mbedx509_target} ${mbedtls_target})
+set(target_libraries ${mbedcrypto_target})
+
+if (NOT CRYPTO_ONLY)
+    list(APPEND target_libraries ${mbedx509_target} ${mbedtls_target})
+endif()

 if(USE_STATIC_MBEDTLS_LIBRARY AND USE_SHARED_MBEDTLS_LIBRARY)
     string(APPEND mbedtls_static_target    "_static")
@@ -258,9 +263,13 @@ if(USE_STATIC_MBEDTLS_LIBRARY AND USE_SHARED_MBEDTLS_LIBRARY)
     string(APPEND mbedcrypto_static_target "_static")

     list(APPEND target_libraries
-        ${mbedcrypto_static_target}
-        ${mbedx509_static_target}
-        ${mbedtls_static_target})
+        ${mbedcrypto_static_target})
+
+    if (NOT CRYPTO_ONLY)
+        list(APPEND target_libraries
+            ${mbedx509_static_target}
+            ${mbedtls_static_target})
+    endif()
 endif()

 if(USE_STATIC_MBEDTLS_LIBRARY)
@@ -272,13 +281,15 @@ if(USE_STATIC_MBEDTLS_LIBRARY)
         target_link_libraries(${mbedcrypto_static_target} PUBLIC everest)
     endif()

-    add_library(${mbedx509_static_target} STATIC ${src_x509})
-    set_target_properties(${mbedx509_static_target} PROPERTIES OUTPUT_NAME mbedx509)
-    target_link_libraries(${mbedx509_static_target} PUBLIC ${libs} ${mbedcrypto_static_target})
+    if (NOT CRYPTO_ONLY)
+        add_library(${mbedx509_static_target} STATIC ${src_x509})
+        set_target_properties(${mbedx509_static_target} PROPERTIES OUTPUT_NAME mbedx509)
+        target_link_libraries(${mbedx509_static_target} PUBLIC ${libs} ${mbedcrypto_static_target})

-    add_library(${mbedtls_static_target} STATIC ${src_tls})
-    set_target_properties(${mbedtls_static_target} PROPERTIES OUTPUT_NAME mbedtls)
-    target_link_libraries(${mbedtls_static_target} PUBLIC ${libs} ${mbedx509_static_target})
+        add_library(${mbedtls_static_target} STATIC ${src_tls})
+        set_target_properties(${mbedtls_static_target} PROPERTIES OUTPUT_NAME mbedtls)
+        target_link_libraries(${mbedtls_static_target} PUBLIC ${libs} ${mbedx509_static_target})
+    endif()
 endif(USE_STATIC_MBEDTLS_LIBRARY)

 if(USE_SHARED_MBEDTLS_LIBRARY)
@@ -290,14 +301,15 @@ if(USE_SHARED_MBEDTLS_LIBRARY)
     if(TARGET everest)
         target_link_libraries(${mbedcrypto_target} PUBLIC everest)
     endif()
-
-    add_library(${mbedx509_target} SHARED ${src_x509})
-    set_target_properties(${mbedx509_target} PROPERTIES VERSION 3.4.0 SOVERSION 5)
-    target_link_libraries(${mbedx509_target} PUBLIC ${libs} ${mbedcrypto_target})
-
-    add_library(${mbedtls_target} SHARED ${src_tls})
-    set_target_properties(${mbedtls_target} PROPERTIES VERSION 3.4.0 SOVERSION 19)
-    target_link_libraries(${mbedtls_target} PUBLIC ${libs} ${mbedx509_target})
+    if (NOT CRYPTO_ONLY)
+        add_library(${mbedx509_target} SHARED ${src_x509})
+        set_target_properties(${mbedx509_target} PROPERTIES VERSION 3.4.0 SOVERSION 5)
+        target_link_libraries(${mbedx509_target} PUBLIC ${libs} ${mbedcrypto_target})
+
+        add_library(${mbedtls_target} SHARED ${src_tls})
+        set_target_properties(${mbedtls_target} PROPERTIES VERSION 3.4.0 SOVERSION 19)
+        target_link_libraries(${mbedtls_target} PUBLIC ${libs} ${mbedx509_target})
+    endif()
 endif(USE_SHARED_MBEDTLS_LIBRARY)

 foreach(target IN LISTS target_libraries)
@@ -322,7 +334,15 @@ endforeach(target)

 set(lib_target "${MBEDTLS_TARGET_PREFIX}lib")

-add_custom_target(${lib_target} DEPENDS ${mbedcrypto_target} ${mbedx509_target} ${mbedtls_target})
+add_custom_target(${lib_target} DEPENDS ${mbedcrypto_target})
+
+if(NOT CRYPTO_ONLY)
+    add_dependencies(${lib_target} ${mbedx509_target} ${mbedtls_target})
+endif()
+
 if(USE_STATIC_MBEDTLS_LIBRARY AND USE_SHARED_MBEDTLS_LIBRARY)
-    add_dependencies(${lib_target} ${mbedcrypto_static_target} ${mbedx509_static_target} ${mbedtls_static_target})
+    add_dependencies(${lib_target} ${mbedcrypto_static_target})
+    if(NOT CRYPTO_ONLY)
+        add_dependencies(${lib_target} ${mbedx509_static_target} ${mbedtls_static_target})
+    endif()
 endif()
--
2.34.1