cmake: Try and simplify test_keys/certs.h generation

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1501240..dddb4e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -413,40 +413,35 @@
 #
 if(ENABLE_TESTING OR ENABLE_PROGRAMS)
     file(GLOB MBEDTLS_TEST_HELPER_FILES
-         ${CMAKE_CURRENT_SOURCE_DIR}/tests/src/*.c
-         ${CMAKE_CURRENT_SOURCE_DIR}/tests/src/test_helpers/*.c)
+         tests/src/*.c tests/src/test_helpers/*.c)
     add_library(mbedtls_test_helpers OBJECT ${MBEDTLS_TEST_HELPER_FILES})
     set_base_compile_options(mbedtls_test_helpers)
-
     if(GEN_FILES)
         add_custom_command(
             OUTPUT
-                ${MBEDTLS_DIR}/tests/src/test_certs.h
-            WORKING_DIRECTORY
-                ${MBEDTLS_DIR}/tests
+                ${CMAKE_CURRENT_SOURCE_DIR}/tests/src/test_certs.h
             COMMAND
                 "${MBEDTLS_PYTHON_EXECUTABLE}"
                 "${MBEDTLS_FRAMEWORK_DIR}/scripts/generate_test_cert_macros.py"
                 "--output"
-                "${MBEDTLS_DIR}/tests/src/test_certs.h"
+                "${CMAKE_CURRENT_SOURCE_DIR}/tests/src/test_certs.h"
             DEPENDS
                 ${MBEDTLS_FRAMEWORK_DIR}/scripts/generate_test_cert_macros.py
         )
         add_custom_target(mbedtls_test_certs_header
-            DEPENDS ${MBEDTLS_DIR}/tests/src/test_certs.h)
+            DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/tests/src/test_certs.h)
         add_dependencies(mbedtls_test_helpers mbedtls_test_certs_header)
     endif()
-
     target_include_directories(mbedtls_test_helpers
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/framework/tests/include
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tests/include
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/include
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tf-psa-crypto/include
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tf-psa-crypto/drivers/builtin/include
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/library
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tf-psa-crypto/core
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tf-psa-crypto/drivers/builtin/src
-        PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/tf-psa-crypto/drivers/everest/include)
+        PRIVATE ${MBEDTLS_FRAMEWORK_DIR}/tests/include
+        PRIVATE tests/include
+        PRIVATE include
+        PRIVATE tf-psa-crypto/include
+        PRIVATE tf-psa-crypto/drivers/builtin/include
+        PRIVATE library
+        PRIVATE tf-psa-crypto/core
+        PRIVATE tf-psa-crypto/drivers/builtin/src
+        PRIVATE tf-psa-crypto/drivers/everest/include)
 
     set_config_files_compile_definitions(mbedtls_test_helpers)
 endif()
diff --git a/tf-psa-crypto/CMakeLists.txt b/tf-psa-crypto/CMakeLists.txt
index a55b162..0b8f787 100644
--- a/tf-psa-crypto/CMakeLists.txt
+++ b/tf-psa-crypto/CMakeLists.txt
@@ -400,18 +400,16 @@
 # files to define the test executables.
 #
 if(ENABLE_TESTING OR ENABLE_PROGRAMS)
-    file(GLOB MBEDTLS_TEST_FILES
+    file(GLOB TF_PSA_CRYPTO_TEST_FILES
          ${TF_PSA_CRYPTO_FRAMEWORK_DIR}/tests/src/*.c
          ${TF_PSA_CRYPTO_FRAMEWORK_DIR}/tests/src/drivers/*.c
-         ${TF_PSA_CRYPTO_DIR}/tests/src/*.c)
-    add_library(tf_psa_crypto_test OBJECT ${MBEDTLS_TEST_FILES})
+         tests/src/*.c)
+    add_library(tf_psa_crypto_test OBJECT ${TF_PSA_CRYPTO_TEST_FILES})
     set_base_compile_options(tf_psa_crypto_test)
     if(GEN_FILES)
         add_custom_command(
             OUTPUT
                 ${TF_PSA_CRYPTO_FRAMEWORK_DIR}/tests/src/test_keys.h
-            WORKING_DIRECTORY
-                ${MBEDTLS_DIR}/tests
             COMMAND
                 "${TF_PSA_CRYPTO_PYTHON_EXECUTABLE}"
                 "${TF_PSA_CRYPTO_FRAMEWORK_DIR}/scripts/generate_test_keys.py"
@@ -426,7 +424,7 @@
     endif()
     target_include_directories(tf_psa_crypto_test
         PRIVATE ${TF_PSA_CRYPTO_FRAMEWORK_DIR}/tests/include
-        PRIVATE ${TF_PSA_CRYPTO_DIR}/tests/include
+        PRIVATE tests/include
         PRIVATE ${MBEDTLS_DIR}/include
         PRIVATE include
         PRIVATE drivers/builtin/include