How to make derived header-only libraries? about rules_foreign_cc HOT 7 CLOSED

configure_make(
    name = "openssl",
    configure_command = "config",
    configure_options = [
        "no-shared",
    ],
    lib_source = "@com_github_openssl_openssl//:all",
    static_libraries = [
        "libcrypto.a",
        "libssl.a",
    ],
)

configure_make(
    name = "cpython",
    configure_options = [
        "--with-openssl=$EXT_BUILD_DEPS/openssl",
        # Hack to work around https://github.com/bazelbuild/rules_foreign_cc/issues/239
        "CFLAGS='-Dredacted=\"redacted\"'",
    ],
    lib_source = "@com_github_python_cpython//:all",
    out_include_dir = "include/python3.7m",
    binaries = [
        "python3",
    ],
    visibility = [
        "//visibility:public",
    ],
    deps = [
        ":openssl",
    ],
)

filegroup(
    name = "cpython_files",
    srcs = [
        ":cpython",
    ],
    visibility = [
        "//visibility:public",
    ],
    output_group = "gen_dir",
)

genrule(
    name = "cpython_includes",
    srcs = [
        ":cpython_files",
    ],
    cmd = "cp -r $(location cpython_files)/include/python3.7m $(location include)",
    outs = ["include"],
)

cc_library(
    name = "cpython_header_only",
    srcs = [
        ":cpython_includes",
    ],
    copts = ["-isystem include"],
)

root@193498bdc412:/src# bazel build //...
ERROR: /src/3rd_party/BUILD:65:12: in srcs attribute of cc_library rule //3rd_party:cpython_header_only: '//3rd_party:cpython_includes' does not produce any cc_library srcs files (expected .cc, .cpp, .cxx, .c++, .C, .c, .h, .hh, .hpp, .ipp, .hxx, .inc, .inl, .H, .S, .s, .asm, .a, .lib, .pic.a, .lo, .lo.lib, .pic.lo, .so, .dylib, .dll, .o, .obj or .pic.o)
ERROR: Analysis of target '//3rd_party:cpython_header_only' failed; build aborted: Analysis of target '//3rd_party:cpython_header_only' failed; build aborted
INFO: Elapsed time: 0.638s
INFO: 0 processes.

cc_library(
    name = "cpython_header_only",
    hdrs = [
        ":cpython_includes",
    ],
    copts = ["-isystem include"],
)

cc_library(
    name = "cpython_header_only",
    hdrs = [
        ":cpython_includes",
    ],
    includes = ["include"],
)

ERROR: /src/src/lib/BUILD:9:1: undeclared inclusion(s) in rule '//src/lib:bridge_tracer_lib':
this rule is missing dependency declarations for the following files included by 'src/lib/python_object_wrapper.cpp':
  'bazel-out/k8-fastbuild/genfiles/3rd_party/include/Python.h'
  'bazel-out/k8-fastbuild/genfiles/3rd_party/include/patchlevel.h'
...

bazel build -s //:bridge_tracer.so
...
/usr/bin/gcc -shared -o bazel-out/k8-fastbuild/bin/bridge_tracer.so -Wl,-S '-fuse-ld=gold' -Wl,-no-as-needed -Wl,-z,relro,-z,now -B/usr/bin -pass-exit-codes -Wl,@bazel-out/k8-fastbuild/bin/bridge_tracer.so-2.params

cat bazel-out/k8-fastbuild/bin/bridge_tracer.so-2.params
...
-whole-archive
bazel-out/k8-fastbuild/genfiles/3rd_party/openssl/lib/libssl.a
-no-whole-archive