Bazel 构建系统
Bazel 是一个开源构建和测试工具，可以输出 Graphviz 依赖关系图。
此图是通过查询 Abseil（一个 C++ 库）的源代码生成的，该代码显示了 Abseil 的随机数库依赖 Abseil 的字符串库的所有方式。使用 --output=graph 输出 Graphviz 图。
bazel query --output=graph --notool_deps 'allpaths(//absl/random, //absl/strings)' | dot -Tsvg > /tmp/deps.svg
有关详细信息，请参见 Bazel 查询指南。
bazel.gv.txt
digraph mygraph {
fontname="Helvetica,Arial,sans-serif"
node [fontname="Helvetica,Arial,sans-serif"]
edge [fontname="Helvetica,Arial,sans-serif"]
node [shape=box];
"//absl/random:random"
"//absl/random:random" -> "//absl/random:distributions"
"//absl/random:random" -> "//absl/random:seed_sequences"
"//absl/random:random" -> "//absl/random/internal:pool_urbg"
"//absl/random:random" -> "//absl/random/internal:nonsecure_base"
"//absl/random:distributions"
"//absl/random:distributions" -> "//absl/strings:strings"
"//absl/random:seed_sequences"
"//absl/random:seed_sequences" -> "//absl/random/internal:seed_material"
"//absl/random:seed_sequences" -> "//absl/random/internal:salted_seed_seq"
"//absl/random:seed_sequences" -> "//absl/random/internal:pool_urbg"
"//absl/random:seed_sequences" -> "//absl/random/internal:nonsecure_base"
"//absl/random/internal:nonsecure_base"
"//absl/random/internal:nonsecure_base" -> "//absl/random/internal:pool_urbg"
"//absl/random/internal:nonsecure_base" -> "//absl/random/internal:salted_seed_seq"
"//absl/random/internal:nonsecure_base" -> "//absl/random/internal:seed_material"
"//absl/random/internal:pool_urbg"
"//absl/random/internal:pool_urbg" -> "//absl/random/internal:seed_material"
"//absl/random/internal:salted_seed_seq"
"//absl/random/internal:salted_seed_seq" -> "//absl/random/internal:seed_material"
"//absl/random/internal:seed_material"
"//absl/random/internal:seed_material" -> "//absl/strings:strings"
"//absl/strings:strings"
}