Add basic support for armv7

Signed-off-by: Austin Schuh <[email protected]>

Author: AustinSchuh

platforms/BUILD.bazel

@@ -30,6 +30,14 @@ platform(
     ],
 )
 
+platform(
+    name = "linux-armv7",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:armv7",
+    ],
+)
+
 platform(
     name = "darwin-x86_64",
     constraint_values = [

toolchain/cc_toolchain_config.bzl

@@ -81,6 +81,15 @@ def cc_toolchain_config(
             "clang",
             "glibc_unknown",
         ),
+        "linux-armv7": (
+            "clang-armv7-linux",
+            "armv7a-unknown-linux-gnueabihf",
+            "armv7",
+            "glibc_unknown",
+            "clang",
+            "clang",
+            "glibc_unknown",
+        ),
         "linux-x86_64": (
             "clang-x86_64-linux",
             "k8",

toolchain/internal/common.bzl

@@ -15,6 +15,7 @@
 SUPPORTED_TARGETS = [
     ("linux", "x86_64"),
     ("linux", "aarch64"),
+    ("linux", "armv7"),
     ("darwin", "x86_64"),
     ("darwin", "aarch64"),
     ("none", "wasm32"),