Cache: keep c->body_start when Vary changes (ticket #2029). If the variant hash doesn't match one we used as a secondary cache key, we switch back to the original key. In this case, c->body_start was kept updated from an existing cache node overwriting the new response value. After file cache update, it led to discrepancy between a cache node and cache file seen as critical errors "file cache .. has too long header".

# Copyright (C) Nginx, Inc.


if [ $USE_THREADS = YES ]; then

    if [ "$NGX_PLATFORM" = win32 ]; then
        cat << END

$0: --with-threads is not supported on Windows

END
        exit 1
    fi

    have=NGX_THREADS . auto/have
    CORE_DEPS="$CORE_DEPS $THREAD_POOL_DEPS"
    CORE_SRCS="$CORE_SRCS $THREAD_POOL_SRCS"
    CORE_LIBS="$CORE_LIBS -lpthread"
    NGX_LIBPTHREAD="-lpthread"
fi