feat(NODE-6993): Add support for FreeBSD (#248)

Author: tagattie

.github/workflows/build.yml

@@ -63,3 +63,31 @@ jobs:
           if-no-files-found: 'error'
           retention-days: 1
           compression-level: 0
+
+  freebsd_builds:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        freebsd_arch: [aarch64, amd64]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build freebsd-${{ matrix.freebsd_arch }} Prebuild
+        uses: vmactions/freebsd-vm@v1
+        with:
+          arch: ${{ matrix.freebsd_arch }}
+          usesh: true
+          prepare: |
+            pkg install -y krb5 node npm pkgconf
+          run: |
+            node .github/scripts/build.mjs
+
+      - id: upload
+        name: Upload prebuild
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-freebsd-${{ matrix.freebsd_arch }}
+          path: prebuilds/
+          if-no-files-found: 'error'
+          retention-days: 1
+          compression-level: 0

binding.gyp

@@ -54,14 +54,14 @@
             ]
           }
         }],
-        ['OS=="mac" or OS=="linux"', {
+        ['OS=="mac" or OS=="linux" or OS=="freebsd"', {
           'sources': [
             'src/unix/base64.cc',
             'src/unix/kerberos_gss.cc',
             'src/unix/kerberos_unix.cc'
           ]
         }],
-        ['(OS=="mac") or (OS=="linux" and kerberos_use_rtld!="true")', {
+        ['(OS=="mac") or ((OS=="linux" or OS=="freebsd") and kerberos_use_rtld!="true")', {
           'link_settings': {
             'libraries': [
               '-lkrb5',
@@ -78,14 +78,24 @@
             }]
           ]
         }],
-        ['(OS=="linux") and (kerberos_use_rtld=="true")', {
+        ['(OS=="linux" or OS=="freebsd") and (kerberos_use_rtld=="true")', {
           'defines': ['KERBEROS_USE_RTLD=1'],
           'link_settings': {
             'libraries': [
               '-ldl',
             ]
           },
         }],
+        ['OS=="freebsd"', {
+          'include_dirs+': [
+            '<!(pkg-config krb5 --cflags-only-I | sed -E "s/(-I *|-isystem *)//g")',
+          ],
+          'link_settings': {
+            'library_dirs': [
+              '<!(pkg-config krb5 --libs-only-L | sed -e "s/-L//g")',
+            ]
+          },
+        }],
         ['OS=="win"',  {
           'sources': [
             'src/win32/kerberos_sspi.cc',

src/kerberos_common.h

@@ -1,7 +1,7 @@
 #ifndef KERBEROS_COMMON_H
 #define KERBEROS_COMMON_H
 
-#if defined(__linux__) || defined(__APPLE__)
+#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
 #include "unix/kerberos_gss.h"
 
 namespace node_kerberos {

src/unix/kerberos_gss.cc

@@ -65,10 +65,17 @@ struct DLOpenHandle {
   DLOpenHandle& operator=(DLOpenHandle&) = delete;
 };
 
+#ifndef __FreeBSD__
 #define DYLIBS(V) \
     V(gssapi, "libgssapi_krb5.so.2") \
     V(krb5, "libkrb5.so.3") \
     V(comerr, "libcom_err.so.2")
+#else
+#define DYLIBS(V) \
+    V(gssapi, "libgssapi_krb5.so.2") \
+    V(krb5, "libkrb5.so.3") \
+    V(comerr, "libcom_err.so.3")
+#endif
 
 #define LIBRARY_HANDLE_GETTER(name, lib) \
     static const DLOpenHandle& name ## _handle() { \