xtest: add -DOPENSSL_API_COMPAT=10100

regression_1000.c uses OpenSSL functions that have been deprecated
after version 1.1. In particular, building with version 3.0 causes the
following error (and other similar ones not pasted here):

 optee_test/host/xtest/regression_1000.c: In function 'check_signature':
 optee_test/host/xtest/regression_1000.c:2735:9: error: 'SHA256_Init' is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
  2735 |         SHA256_Init(&ctx);
       |         ^~~~~~~~~~~

Add -DOPENSSL_API_COMPAT=10100 to the build flags to avoid this and be
flexible with regards to which version of OpenSSL build environment has
to provide.

Signed-off-by: Jerome Forissier <[email protected]>
Acked-by: Jens Wiklander <[email protected]>

host/xtest/CMakeLists.txt

@@ -12,7 +12,7 @@ endif()
 
 find_package(OpenSSL)
 if(OPENSSL_FOUND)
-	add_compile_options(-DOPENSSL_FOUND=1)
+	add_compile_options(-DOPENSSL_FOUND=1 -DOPENSSL_API_COMPAT=10100)
 	set (OPENSSL_PRIVATE_LINK OpenSSL::Crypto)
 endif()
 

host/xtest/Makefile

@@ -39,7 +39,7 @@ endef
 # - User/group login tests 1027 and 1028
 WITH_OPENSSL ?= y
 ifeq ($(WITH_OPENSSL),y)
-CFLAGS += -DOPENSSL_FOUND=1
+CFLAGS += -DOPENSSL_FOUND=1 -DOPENSSL_API_COMPAT=10100
 ifneq ($(OPTEE_OPENSSL_EXPORT),)
 LDFLAGS += -lcrypto
 CFLAGS += -I$(OPTEE_OPENSSL_EXPORT)