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52 lines
2.1 KiB
Python
52 lines
2.1 KiB
Python
# Pulls all mbedTLS sources from arduino-pico's pico-sdk into the build so the
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# firmware can call mbedtls_* APIs (the precompiled arduino-pico libs only
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# expose BearSSL; mbedTLS is shipped as source under lib/mbedtls/library/*.c).
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#
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# Wired in via `extra_scripts = pre:scripts/add_mbedtls_sources.py` on the
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# variants that define HAS_ETHERNET_TLS_API. POSIX-only code paths inside
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# mbedtls are neutralized by src/mbedtls_user_config.h (referenced via the
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# variant's -DMBEDTLS_USER_CONFIG_FILE build flag). Unused symbols are dropped
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# at link time, so non-TLS envs that pull this script in pay nothing.
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# trunk-ignore-all(ruff/F821)
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# trunk-ignore-all(flake8/F821): Import/env/Return are SCons-injected globals
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# trunk-ignore-all(ruff/E402)
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# trunk-ignore-all(flake8/E402): stdlib imports must follow Import("env")
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Import("env")
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import glob
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import os
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framework_dir = env.PioPlatform().get_package_dir("framework-arduinopico")
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if not framework_dir:
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print("[add_mbedtls_sources] framework-arduinopico package not found - skipping")
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Return()
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mbedtls_root = os.path.join(framework_dir, "pico-sdk", "lib", "mbedtls")
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include_dir = os.path.join(mbedtls_root, "include")
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src_dir = os.path.join(mbedtls_root, "library")
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if not os.path.isdir(src_dir):
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print(f"[add_mbedtls_sources] mbedtls library dir not found at {src_dir}")
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Return()
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# mbedtls headers + project src (where mbedtls_user_config.h lives) must be on
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# the include path when the .c files compile.
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env.Append(CPPPATH=[include_dir, env["PROJECT_SRC_DIR"]])
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# Inject the user-config define through CPPDEFINES so SCons handles the
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# embedded quotes correctly. The build_flags shell parser drops/corrupts the
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# value when the same is expressed as -D 'MBEDTLS_USER_CONFIG_FILE="..."'.
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env.Append(CPPDEFINES=[("MBEDTLS_USER_CONFIG_FILE", '\\"mbedtls_user_config.h\\"')])
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sources = sorted(glob.glob(os.path.join(src_dir, "*.c")))
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print(
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f"[add_mbedtls_sources] Adding {len(sources)} mbedTLS source files from {src_dir}"
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)
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env.BuildSources(
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os.path.join("$BUILD_DIR", "mbedtls_pico"),
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src_dir,
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src_filter=["+<*.c>"],
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)
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