ci: Add amd64 macos bazel workflow (#324)

* ci: Add amd64 MacOS Bazel job

* bazel: Fix MacOS build

* add amd64_macos_bazel badge

5 files changed, 55 insertions, 3 deletions

diff --git a/.github/workflows/amd64_macos_bazel.yml b/.github/workflows/amd64_macos_bazel.yml
new file mode 100644
index 0000000..fd1bc5a
--- /dev/null
+++ b/.github/workflows/amd64_macos_bazel.yml
@@ -0,0 +1,35 @@
+name: amd64 MacOS Bazel
+
+on:
+  push:
+  pull_request:
+  schedule:
+    # min hours day(month) month day(week)
+    - cron: '0 0 7,22 * *'
+
+jobs:
+  # Building using the github runner environement directly.
+  bazel:
+    runs-on: macos-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v3
+      - name: Install Bazel
+        run: |
+          brew update
+          brew unlink bazelisk
+          brew install bazel
+      - name: Check Bazel
+        run: bazel version
+      - name: Build
+        run: >
+          bazel build
+          -c opt
+          --subcommands=true
+          ...
+      - name: Test
+        run: >
+          bazel test
+          -c opt
+          --test_output=errors
+          ...
diff --git a/BUILD.bazel b/BUILD.bazel
index b6e4b9f..6925944 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -2,6 +2,7 @@
 
 load("@bazel_skylib//lib:selects.bzl", "selects")
 load("//:bazel/platforms.bzl", "PLATFORM_CPU_ARM", "PLATFORM_CPU_ARM64", "PLATFORM_CPU_MIPS", "PLATFORM_CPU_PPC", "PLATFORM_CPU_RISCV32", "PLATFORM_CPU_RISCV64", "PLATFORM_CPU_X86_64")
+load("//:bazel/platforms.bzl", "PLATFORM_OS_MACOS")
 
 package(
     default_visibility = ["//visibility:public"],
@@ -170,7 +171,10 @@ cc_library(
     name = "hwcaps",
     srcs = ["src/hwcaps.c"],
     copts = C99_FLAGS,
-    defines = ["HAVE_STRONG_GETAUXVAL"],
+    defines = selects.with_or({
+        PLATFORM_OS_MACOS: ["HAVE_DLFCN_H"],
+        "//conditions:default": ["HAVE_STRONG_GETAUXVAL"],
+    }),
     includes = INCLUDES,
     textual_hdrs = ["include/internal/hwcaps.h"],
     deps = [
@@ -237,6 +241,10 @@ cc_library(
         PLATFORM_CPU_RISCV64: ["include/cpuinfo_riscv.h"],
     }),
     copts = C99_FLAGS,
+    defines = selects.with_or({
+        PLATFORM_OS_MACOS: ["HAVE_SYSCTLBYNAME"],
+        "//conditions:default": [],
+    }),
     includes = INCLUDES,
     textual_hdrs = selects.with_or({
         PLATFORM_CPU_X86_64: ["src/impl_x86__base_implementation.inl"],
@@ -296,6 +304,9 @@ cc_library(
     defines = selects.with_or({
         PLATFORM_CPU_X86_64: ["CPU_FEATURES_MOCK_CPUID_X86"],
         "//conditions:default": [],
+    }) + selects.with_or({
+        PLATFORM_OS_MACOS: ["HAVE_SYSCTLBYNAME"],
+        "//conditions:default": [],
     }),
     includes = INCLUDES,
     textual_hdrs = selects.with_or({
diff --git a/README.md b/README.md
index 8cb272d..0221a80 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ instructions) at runtime.
 
 |  | Linux | FreeBSD | MacOS | Windows |
 | :-- | --: | --: | --: | --: |
-| amd64 | [![][i1a0]][l1a0]<br/>[![][i1a1]][l1a1] | [![][i2a0]][l2a0]<br/>![][d1] | [![][i3a0]][l3a0]<br/>![][d1] | [![][i4a0]][l4a0]<br/>![][d1] |
+| amd64 | [![][i1a0]][l1a0]<br/>[![][i1a1]][l1a1] | [![][i2a0]][l2a0]<br/>![][d1] | [![][i3a0]][l3a0]<br/>[![][i3a1]][l3a1] | [![][i4a0]][l4a0]<br/>![][d1] |
 | AArch64 | [![][i1b0]][l1b0]<br/>[![][i1b1]][l1b1] | ![][d0]<br/>![][d1] | ![][d0]<br/>![][d1] | ![][d0]<br/>![][d1] |
 | ARM | [![][i1c0]][l1c0]<br/>![][d1] | ![][d0]<br/>![][d1] | ![][d0]<br/>![][d1] | ![][d0]<br/>![][d1] |
 | MIPS | [![][i1d0]][l1d0]<br/>![][d1] | ![][d0]<br/>![][d1] | ![][d0]<br/>![][d1] | ![][d0]<br/>![][d1] |
@@ -31,6 +31,7 @@ instructions) at runtime.
 [i1h0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/s390x_linux_cmake.yml?branch=main&event=push&label=&logo=cmake
 [i2a0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_freebsd_cmake.yml?branch=main&event=push&label=&logo=cmake
 [i3a0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_macos_cmake.yml?branch=main&event=push&label=&logo=cmake
+[i3a1]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_macos_bazel.yml?branch=main&event=push&label=&logo=data:image/svg%2bxml;base64,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
 [i4a0]: https://img.shields.io/github/actions/workflow/status/google/cpu_features/amd64_windows_cmake.yml?branch=main&event=push&label=&logo=cmake
 [l1a0]: https://github.com/google/cpu_features/actions/workflows/amd64_linux_cmake.yml
 [l1a1]: https://github.com/google/cpu_features/actions/workflows/amd64_linux_bazel.yml
@@ -43,6 +44,7 @@ instructions) at runtime.
 [l1h0]: https://github.com/google/cpu_features/actions/workflows/s390x_linux_cmake.yml
 [l2a0]: https://github.com/google/cpu_features/actions/workflows/amd64_freebsd_cmake.yml
 [l3a0]: https://github.com/google/cpu_features/actions/workflows/amd64_macos_cmake.yml
+[l3a1]: https://github.com/google/cpu_features/actions/workflows/amd64_macos_bazel.yml
 [l4a0]: https://github.com/google/cpu_features/actions/workflows/amd64_windows_cmake.yml
 
 ## Table of Contents
diff --git a/bazel/platforms.bzl b/bazel/platforms.bzl
index 20ed79d..eb025ce 100644
--- a/bazel/platforms.bzl
+++ b/bazel/platforms.bzl
@@ -13,3 +13,6 @@ PLATFORM_CPU_PPC = ("@platforms//cpu:ppc")
 PLATFORM_CPU_RISCV32 = ("@platforms//cpu:riscv32")
 
 PLATFORM_CPU_RISCV64 = ("@platforms//cpu:riscv64")
+
+
+PLATFORM_OS_MACOS = ("@platforms//os:macos")
diff --git a/scripts/generate_badges.d b/scripts/generate_badges.d
index f62b2e9..e69e2d5 100644
--- a/scripts/generate_badges.d
+++ b/scripts/generate_badges.d
@@ -78,7 +78,8 @@ const:
         case BuildSystem.CMake:
             return os == Os.Linux || cpu == Cpu.amd64;
         case BuildSystem.Bazel:
-            return os == Os.Linux && (cpu == Cpu.amd64 || cpu == Cpu.AArch64);
+            return (os == Os.Linux && (cpu == Cpu.amd64 || cpu == Cpu.AArch64))
+              || (os == Os.MacOS && cpu == Cpu.amd64);
         }
     }