bazel-gazelle Header files not available when source contains assembly importing header file

What version of gazelle are you using?

v0.28.0

What version of rules_go are you using?

v0.37.0

What version of Bazel are you using?

5.3.2

Does this issue reproduce with the latest releases of all the above?

What operating system and processor architecture are you using?

OS Manjaro
Arch: x86-64

What did you do?

Have a dependency on github.com/cloudflare/circl

    go_repository(
        name = "com_github_cloudflare_circl",
        build_file_proto_mode = "disable_global",
        importpath = "github.com/cloudflare/circl",
        sum = "h1:bZgT/A+cikZnKIwn7xL2OBj012Bmvho/o6RpRvv3GKY=",
        version = "v1.1.0",
    )

The issue occurs when you have a source with a Go assembly file which includes a header file, and the Go code is not CGO.

What did you expect to see?

Expect Gazelle to generate valid BUILD.bazel files for this.

What did you see instead?

The generated BUILD.bazel contains a go_library which fails to build because a header is ignored as the library is not marked with cgo=True

external/com_github_cloudflare_circl/dh/x25519/curve_amd64.s:7: #include: open external/com_github_cloudflare_circl/math/fp25519/fp_amd64.h: no such file or directory

compilepkg: error running subcommand external/go_sdk/pkg/tool/linux_amd64/asm: exit status 1

Jan 17 '23 13:01 tokongs

I am facing same issue in my setup. Is there a workaround to use this repo com_github_cloudflare_circl in bazel by making some manual changes?

Feb 09 '23 09:02 aman-harness

encountered same issue +1

Feb 09 '23 09:02 wenpincui

@aman-harness @wenpincui We solved this by patching the generated BUILD.bazel files.

go_repository(
    name = "com_github_cloudflare_circl",
    build_file_proto_mode = "disable_global",
    importpath = "github.com/cloudflare/circl",
    patches = [
        "//third-party/go/com_github_cloudflare_circl:fp448.patch",
        "//third-party/go/com_github_cloudflare_circl:fp25519.patch",
        "//third-party/go/com_github_cloudflare_circl:x448.patch",
        "//third-party/go/com_github_cloudflare_circl:x25519.patch",
    ],
        sum = "h1:bZgT/A+cikZnKIwn7xL2OBj012Bmvho/o6RpRvv3GKY=",
        version = "v1.1.0",
    )

fp448.patch

--- math/fp448/BUILD.bazel
+++ math/fp448/BUILD.bazel
@@ -10,6 +10,7 @@ go_library(
         "fp_generic.go",
         "fp_noasm.go",
     ],
+    cgo = True,
     importpath = "github.com/cloudflare/circl/math/fp448",
     visibility = ["//visibility:public"],
     deps = [
@@ -28,6 +29,8 @@ alias(
     visibility = ["//visibility:public"],
 )

+exports_files(["fp_amd64.h"], ["//visibility:public"])
+
 go_test(
     name = "fp448_test",
     srcs = [

x448.patch

--- dh/x448/BUILD.bazel
+++ dh/x448/BUILD.bazel
@@ -12,7 +12,9 @@ go_library(
         "doc.go",
         "key.go",
         "table.go",
+       "//math/fp448:fp_amd64.h",
     ],
+    cgo = True,
     importpath = "github.com/cloudflare/circl/dh/x448",
     visibility = ["//visibility:public"],
     deps = [

With similar files for fp25519 and x25519

Feb 09 '23 12:02 tokongs

Thanks @tokongs for the workaround. I use it here.