include(default)
{% set compiler, version, compiler_exe = detect_api.detect_default_compiler() %}
{% set sanitizers = os.getenv("SANITIZERS") %}

[conf]
{% if sanitizers %}
    {% if compiler == "gcc" %}
        {% if "address" in sanitizers or "thread" in sanitizers or "undefinedbehavior" in sanitizers %}
            {% set sanitizer_list = [] %}
            {% set defines = [] %}
            {% set model_code = "" %}
            {% set extra_cxxflags = ["-fno-omit-frame-pointer", "-O1", "-Wno-stringop-overflow"] %}

            {% if "address" in sanitizers %}
                {% set _ = sanitizer_list.append("address") %}
                {% set model_code = "-mcmodel=large" %}
                {% set _ = defines.append("BOOST_USE_ASAN")%}
                {% set _ = defines.append("BOOST_USE_UCONTEXT")%}
            {% elif "thread" in sanitizers %}
                {% set _ = sanitizer_list.append("thread") %}
                {% set model_code = "-mcmodel=medium" %}
                {% set _ = extra_cxxflags.append("-Wno-tsan") %}
                {% set _ = defines.append("BOOST_USE_TSAN")%}
                {% set _ = defines.append("BOOST_USE_UCONTEXT")%}
            {% endif %}

            {% if "undefinedbehavior" in sanitizers %}
                {% set _ = sanitizer_list.append("undefined") %}
                {% set _ = sanitizer_list.append("float-divide-by-zero") %}
            {% endif %}

            {% set sanitizer_flags = "-fsanitize=" ~ ",".join(sanitizer_list) ~ " " ~ model_code %}

            tools.build:cxxflags+=['{{sanitizer_flags}} {{" ".join(extra_cxxflags)}}']
            tools.build:sharedlinkflags+=['{{sanitizer_flags}}']
            tools.build:exelinkflags+=['{{sanitizer_flags}}']
            tools.build:defines+={{defines}}
        {% endif %}
    {% elif compiler == "apple-clang" or compiler == "clang" %}
        {% if "address" in sanitizers or "thread" in sanitizers or "undefinedbehavior" in sanitizers %}
            {% set sanitizer_list = [] %}
            {% set defines = [] %}
            {% set extra_cxxflags = ["-fno-omit-frame-pointer", "-O1"] %}

            {% if "address" in sanitizers %}
                {% set _ = sanitizer_list.append("address") %}
                {% set _ = defines.append("BOOST_USE_ASAN")%}
                {% set _ = defines.append("BOOST_USE_UCONTEXT")%}
            {% elif "thread" in sanitizers %}
                {% set _ = sanitizer_list.append("thread") %}
                {% set _ = defines.append("BOOST_USE_TSAN")%}
                {% set _ = defines.append("BOOST_USE_UCONTEXT")%}
            {% endif %}

            {% if "undefinedbehavior" in sanitizers %}
                {% set _ = sanitizer_list.append("undefined") %}
                {% set _ = sanitizer_list.append("float-divide-by-zero") %}
                {% set _ = sanitizer_list.append("unsigned-integer-overflow") %}
            {% endif %}

            {% set sanitizer_flags = "-fsanitize=" ~ ",".join(sanitizer_list) %}

            tools.build:cxxflags+=['{{sanitizer_flags}} {{" ".join(extra_cxxflags)}}']
            tools.build:sharedlinkflags+=['{{sanitizer_flags}}']
            tools.build:exelinkflags+=['{{sanitizer_flags}}']
            tools.build:defines+={{defines}}
        {% endif %}
    {% endif %}
{% endif %}

tools.info.package_id:confs+=["tools.build:cxxflags", "tools.build:exelinkflags", "tools.build:sharedlinkflags", "tools.build:defines"]

[options]
{% if sanitizers %}
    {% if "address" in sanitizers %}
        # Build Boost.Context with ucontext backend (not fcontext) so that
        # ASAN fiber-switching annotations (__sanitizer_start/finish_switch_fiber)
        # are compiled into the library. fcontext (assembly) has no ASAN support.
        # define=BOOST_USE_ASAN=1 is critical: it must be defined when building
        # Boost.Context itself so the ucontext backend compiles in the ASAN annotations.
        boost/*:extra_b2_flags=context-impl=ucontext address-sanitizer=on define=BOOST_USE_ASAN=1
        boost/*:without_context=False
        # Boost stacktrace fails to build with some sanitizers
        boost/*:without_stacktrace=True
    {% endif %}
{% endif %}