Index: contrib/openmp/runtime/src/kmp.h
===================================================================
--- contrib/openmp/runtime/src/kmp.h
+++ contrib/openmp/runtime/src/kmp.h
@@ -3466,7 +3466,7 @@
                            enum fork_context_e fork_context, kmp_int32 argc,
                            microtask_t microtask, launch_t invoker,
 /* TODO: revert workaround for Intel(R) 64 tracker #96 */
-#if (KMP_ARCH_ARM || KMP_ARCH_X86_64 || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_ARM || KMP_ARCH_X86_64 || KMP_ARCH_AARCH64)
                            va_list *ap
 #else
                            va_list ap
Index: contrib/openmp/runtime/src/kmp_csupport.cpp
===================================================================
--- contrib/openmp/runtime/src/kmp_csupport.cpp
+++ contrib/openmp/runtime/src/kmp_csupport.cpp
@@ -312,7 +312,7 @@
                     VOLATILE_CAST(microtask_t) microtask, // "wrapped" task
                     VOLATILE_CAST(launch_t) __kmp_invoke_task_func,
 /* TODO: revert workaround for Intel(R) 64 tracker #96 */
-#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)
                     &ap
 #else
                     ap
@@ -415,7 +415,7 @@
                   VOLATILE_CAST(microtask_t)
                       __kmp_teams_master, // "wrapped" task
                   VOLATILE_CAST(launch_t) __kmp_invoke_teams_master,
-#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)
                   &ap
 #else
                   ap
Index: contrib/openmp/runtime/src/kmp_gsupport.cpp
===================================================================
--- contrib/openmp/runtime/src/kmp_gsupport.cpp
+++ contrib/openmp/runtime/src/kmp_gsupport.cpp
@@ -377,7 +377,7 @@
 
   rc = __kmp_fork_call(loc, gtid, fork_context_gnu, argc, wrapper,
                        __kmp_invoke_task_func,
-#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)
                        &ap
 #else
                        ap
Index: contrib/openmp/runtime/src/kmp_runtime.cpp
===================================================================
--- contrib/openmp/runtime/src/kmp_runtime.cpp
+++ contrib/openmp/runtime/src/kmp_runtime.cpp
@@ -1390,7 +1390,7 @@
                     enum fork_context_e call_context, // Intel, GNU, ...
                     kmp_int32 argc, microtask_t microtask, launch_t invoker,
 /* TODO: revert workaround for Intel(R) 64 tracker #96 */
-#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)
                     va_list *ap
 #else
                     va_list ap
@@ -1502,7 +1502,7 @@
       argv = (void **)parent_team->t.t_argv;
       for (i = argc - 1; i >= 0; --i)
 /* TODO: revert workaround for Intel(R) 64 tracker #96 */
-#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)
         *argv++ = va_arg(*ap, void *);
 #else
         *argv++ = va_arg(ap, void *);
@@ -1785,7 +1785,7 @@
           if (ap) {
             for (i = argc - 1; i >= 0; --i)
 // TODO: revert workaround for Intel(R) 64 tracker #96
-#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)
               *argv++ = va_arg(*ap, void *);
 #else
               *argv++ = va_arg(ap, void *);
@@ -1804,7 +1804,7 @@
           argv = args;
           for (i = argc - 1; i >= 0; --i)
 // TODO: revert workaround for Intel(R) 64 tracker #96
-#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)
             *argv++ = va_arg(*ap, void *);
 #else
             *argv++ = va_arg(ap, void *);
@@ -2091,7 +2091,7 @@
     if (ap) {
       for (i = argc - 1; i >= 0; --i) {
 // TODO: revert workaround for Intel(R) 64 tracker #96
-#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64) && KMP_OS_LINUX
+#if (KMP_ARCH_X86_64 || KMP_ARCH_ARM || KMP_ARCH_AARCH64)
         void *new_argv = va_arg(*ap, void *);
 #else
         void *new_argv = va_arg(ap, void *);
Index: share/mk/src.opts.mk
===================================================================
--- share/mk/src.opts.mk
+++ share/mk/src.opts.mk
@@ -410,7 +410,7 @@
 .endif
 
 .if ${COMPILER_FEATURES:Mc++11} && \
-    (${__T} == "amd64" || ${__T} == "i386" || ${__T} == "powerpc64")
+    (${__T} == "aarch64" || ${__T} == "amd64" || ${__T} == "i386" || ${__T} == "powerpc64")
 __DEFAULT_YES_OPTIONS+=OPENMP
 .else
 __DEFAULT_NO_OPTIONS+=OPENMP