[BAZEL] make tools native binaries (#51)

MODULE.bazel

@@ -8,10 +8,10 @@ module(
 
 bazel_dep(name = "platforms", version = "0.0.8")
 bazel_dep(name = "rules_cc", version = "0.0.9")
+bazel_dep(name = "bazel_skylib", version = "1.5.0")
 
 # DEV ONLY (not needed for release)
 bazel_dep(name = "aspect_bazel_lib", version = "2.0.0", dev_dependency = True)
-bazel_dep(name = "bazel_skylib", version = "1.5.0", dev_dependency = True)
 
 arm_toolchain = use_extension(
     "@toolchains_arm_gnu//:extensions.bzl",

test/arm-none-eabi/BUILD

@@ -27,7 +27,7 @@ cc_library(
 )
 
 cc_binary(
-    name = "arm_elf",
+    name = "app",
     srcs = ["main.cpp"],
     copts = [
         "-mcpu=cortex-a5",
@@ -41,15 +41,24 @@ cc_binary(
 )
 
 platform_transition_filegroup(
-    name = "elf",
-    srcs = [":arm_elf"],
+    name = "arm_none_eabi_app",
+    srcs = [":app"],
     target_platform = ":arm_none_eabi",
 )
 
+genrule(
+    name = "elf",
+    srcs = [":arm_none_eabi_app"],
+    outs = ["app.elf"],
+    cmd = "cp $< $@",
+    executable = True,
+    visibility = ["//visibility:public"],
+)
+
 genrule(
     name = "hex",
-    srcs = [":elf"],
-    outs = ["mock.hex"],
+    srcs = [":arm_none_eabi_app"],
+    outs = ["app.hex"],
     cmd = "$(execpath @arm_none_eabi//:objcopy) -O ihex $< $@",
     tools = ["@arm_none_eabi//:objcopy"],
     visibility = ["//visibility:public"],

toolchain/templates/top.BUILD

@@ -5,6 +5,7 @@ repository, i.e., the targets defined here appear in the workspace as
 """
 
 load("@toolchains_arm_gnu//toolchain:toolchain.bzl", "hosts", "tools")
+load("@bazel_skylib//rules:native_binary.bzl", "native_binary")
 
 package(default_visibility = ["//visibility:public"])
 
@@ -15,19 +16,20 @@ TOOLS = tools + ["bin"]
         name = host,
         constraint_values = constraint_values,
     )
-    for host, constraint_values in hosts['%toolchain_prefix%'].items()
+    for host, constraint_values in hosts["%toolchain_prefix%"].items()
 ]
 
 [
-    filegroup(
+    native_binary(
         name = tool,
-        srcs = select({
-            host: ["@%toolchain_name%_{}//:{}".format(host, tool)]
-            for host in hosts['%toolchain_prefix%'].keys()
+        src = select({
+            host: "@%toolchain_name%_{}//:{}".format(host, tool)
+            for host in hosts["%toolchain_prefix%"].keys()
         }),
+        out = tool,
         target_compatible_with = select({
             host: constraint_values
-            for host, constraint_values in hosts['%toolchain_prefix%'].items()
+            for host, constraint_values in hosts["%toolchain_prefix%"].items()
         } | {
             "//conditions:default": ["@platforms//:incompatible"],
         }),