对于Bazel,我是从WORKSPACE
中提取一个外部库:
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BUILD.imgui
内部,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",
],
)
问题是找不到#include <SDL.h>
。
我尝试将其添加到副本中:
copts = ["-Iexamples/", "-D_REENTRANT", "-I/usr/include/SDL"],
但是错误是:
The include path '/usr/include/SDL' references a path outside of the execution root.
好的。同样,如果我尝试将其添加到includes
的{{1}}参数中。
我尝试了另一种技巧,我发现您可以通过Bazel中的另一个存储库使标题可见,如下所示编辑cc_library
:
WORKSPACE
问题是,如果我将该仓库作为自己要构建的外部库的引用,则会出现以下错误:
new_local_repository(
name = "SDL",
path = "/usr/include/SDL",
build_file_content = """
package(
default_visibility = [
"//visibility:public",
],
)
cc_library(
name = "headers",
srcs = glob(["**/*.h"]),
)
""",
我当然不能更改标题,因为它不是我的标题。它来自我拉下的外部库。
我该怎么办?
我不明白为什么我不能将系统路径添加到副本(可能是密封的原因)。我不知道如何包含路径并使它们作为系统标头进行访问。我也尝试过使用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"
进行其他操作,但是看到了相同的错误。
答案 0 :(得分:0)
如László所述,您可以将includes
设置为当前目录,当在其他代码中用作依赖项时,它将被检测为系统标头:
cc_library(
...
includes = [
".",
],
)