8

对于 Bazel,我正在从我的内部拉入一个外部库WORKSPACE

new_http_archive(
      name = "imgui",
      build_file = "deps/BUILD.imgui",
      sha256 = "c457fdc19b4e3aa74deccf6a2d9bc51f0d470b3acd9cc095bf04df16459d6474",
      strip_prefix = 'imgui-1.62',
      url = "https://github.com/ocornut/imgui/archive/v1.62.tar.gz",
)

在里面BUILD.imgui,我正在尝试构建它:

cc_library(
 name = "imgui_sdl_opengl3",
 linkopts = ["-ldl", "-lGL", "-L/usr/lib/x86_64-linux-gnu", "-lSDL2", "-lSDL"],
 copts = ["-Iexamples/", "-D_REENTRANT",],
 includes = [".","examples/libs/gl3w"],
 hdrs = [
     "examples/imgui_impl_opengl3.h",
     "examples/libs/gl3w/GL/gl3w.h",
     "examples/imgui_impl_sdl.h",
     "examples/libs/gl3w/GL/glcorearb.h",
 ],
 srcs = [
     "examples/imgui_impl_opengl3.cpp",
     "examples/imgui_impl_sdl.cpp",
     "examples/libs/gl3w/GL/gl3w.c",
 ],
)

问题是它找不到#include <SDL.h>
我尝试将其添加到 copts:

 copts = ["-Iexamples/", "-D_REENTRANT", "-I/usr/include/SDL"],

但错误是:

The include path '/usr/include/SDL' references a path outside of the execution root.

好的。如果我尝试将其添加includescc_library.

我尝试了另一个技巧,我看到你通过 Bazel 中的另一个 repo 使标题可见,编辑WORKSPACE如下:

new_local_repository(
    name = "SDL",
    path = "/usr/include/SDL",
    build_file_content = """
package(
    default_visibility = [
        "//visibility:public",
    ],
)

cc_library(
    name = "headers",
    srcs = glob(["**/*.h"]),
)
""",

问题是,如果我将该 repo 作为我正在尝试构建的外部库的 deps 引用,我会收到以下错误:

external/imgui/examples/imgui_impl_sdl.cpp:38:10: error: 'SDL.h' file not found with <angled> include; use "quotes" instead
#include <SDL.h>
         ^~~~~~~
         "SDL.h"

当然,我不能将标题更改为那个,因为它不是我的标题。它来自我下拉的外部库。

我该怎么办?
我不明白为什么我不能向 copts 添加系统路径(可能是密封的原因)。我不知道如何包含路径并将它们作为系统头文件访问。我也尝试了不同的东西-isystem,但看到了同样的错误。

4

1 回答 1

0

正如 László 所说,您可以将 设置includes为当前目录,这将允许在其他代码中用作依赖项时将其检测为系统标头:

cc_library(
    ... 
    includes = [
        ".",
    ],
)
于 2020-06-01T15:03:04.683 回答