diff --git a/runtime/cmake/LibompHandleFlags.cmake b/runtime/cmake/LibompHandleFlags.cmake
index eed9803..1aba1fb 100644
--- a/runtime/cmake/LibompHandleFlags.cmake
+++ b/runtime/cmake/LibompHandleFlags.cmake
@@ -147,8 +147,11 @@
     if (${CMAKE_SYSTEM_NAME} STREQUAL "DragonFly")
       libomp_append(libflags_local "-lkvm")
     endif()
-  elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux|NetBSD|Solaris")
+  elseif(${CMAKE_SYSTEM_NAME} MATCHES "Linux|NetBSD|SunOS")
     libomp_append(libflags_local -lm)
+    if (${CMAKE_SYSTEM_NAME} STREQUAL "SunOS")
+      libomp_append(libflags_local "-lproc")
+    endif()
   endif()
   set(libflags_local ${libflags_local} ${LIBOMP_LIBFLAGS})
   libomp_setup_flags(libflags_local)
diff --git a/runtime/src/z_Linux_util.cpp b/runtime/src/z_Linux_util.cpp
index 3636266..a8e5a9e 100644
--- a/runtime/src/z_Linux_util.cpp
+++ b/runtime/src/z_Linux_util.cpp
@@ -66,6 +66,9 @@
 #include <sys/types.h>
 #include <sys/sysctl.h>
 #elif KMP_OS_SOLARIS
+#include <libproc.h>
+#include <procfs.h>
+#include <thread.h>
 #include <sys/loadavg.h>
 #endif
 
@@ -418,7 +421,7 @@
   KMP_YIELD(TRUE);
 } //
 
-/* Set thread stack info according to values returned by pthread_getattr_np().
+/* Set thread stack info.
    If values are unreasonable, assume call failed and use incremental stack
    refinement method instead. Returns TRUE if the stack parameters could be
    determined exactly, FALSE if incremental refinement is necessary. */
@@ -426,7 +429,6 @@
   int stack_data;
 #if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD ||     \
     KMP_OS_HURD || KMP_OS_SOLARIS || KMP_OS_AIX
-  pthread_attr_t attr;
   int status;
   size_t size = 0;
   void *addr = 0;
@@ -436,6 +438,19 @@
      pthread_attr_getstack may cause thread gtid aliasing */
   if (!KMP_UBER_GTID(gtid)) {
 
+#if KMP_OS_SOLARIS
+    stack_t s;
+    if ((status = thr_stksegment(&s)) < 0) {
+      KMP_CHECK_SYSFAIL("thr_stksegment", status);
+    }
+
+    addr = s.ss_sp;
+    size = s.ss_size;
+    KA_TRACE(60, ("__kmp_set_stack_info: T#%d thr_stksegment returned size:"
+                  " %lu, low addr: %p\n",
+                  gtid, size, addr));
+#else
+    pthread_attr_t attr;
     /* Fetch the real thread attributes */
     status = pthread_attr_init(&attr);
     KMP_CHECK_SYSFAIL("pthread_attr_init", status);
@@ -454,6 +469,7 @@
               gtid, size, addr));
     status = pthread_attr_destroy(&attr);
     KMP_CHECK_SYSFAIL("pthread_attr_destroy", status);
+#endif
   }
 
   if (size != 0 && addr != 0) { // was stack parameter determination successful?
@@ -2175,6 +2191,54 @@
   }
 
   kvm_close(fd);
+#elif KMP_OS_SOLARIS
+  prmap_t *cur, *map;
+  void *buf;
+  uintptr_t uaddr;
+  ssize_t rd;
+  int err;
+  int file;
+
+  pid_t pid = getpid();
+  struct ps_prochandle *fd = Pgrab(pid, PGRAB_RDONLY, &err);
+  ;
+
+  if (!fd) {
+    return 0;
+  }
+
+  char *name = __kmp_str_format("/proc/%d/map", pid);
+  size_t sz = (1 << 20);
+  file = open(name, O_RDONLY);
+  if (file == -1) {
+    KMP_INTERNAL_FREE(name);
+    return 0;
+  }
+
+  buf = kmpc_malloc(sz);
+
+  while (sz > 0 && (rd = pread(file, buf, sz, 0)) == sz) {
+    void *newbuf;
+    sz <<= 1;
+    newbuf = kmpc_realloc(buf, sz);
+    buf = newbuf;
+  }
+
+  map = reinterpret_cast<prmap_t *>(buf);
+  uaddr = reinterpret_cast<uintptr_t>(addr);
+
+  for (cur = map; rd > 0; cur++, rd = -sizeof(*map)) {
+    if ((uaddr >= cur->pr_vaddr) && (uaddr < cur->pr_vaddr)) {
+      if ((cur->pr_mflags & MA_READ) != 0 && (cur->pr_mflags & MA_WRITE) != 0) {
+        found = 1;
+        break;
+      }
+    }
+  }
+
+  kmpc_free(map);
+  close(file);
+  KMP_INTERNAL_FREE(name);
 #elif KMP_OS_DARWIN
 
   /* On OS X*, /proc pseudo filesystem is not available. Try to read memory
@@ -2253,9 +2317,9 @@
   }
 #elif KMP_OS_WASI
   found = (int)addr < (__builtin_wasm_memory_size(0) * PAGESIZE);
-#elif KMP_OS_SOLARIS || KMP_OS_AIX
+#elif KMP_OS_AIX
 
-  // FIXME(Solaris, AIX): Implement this
+  // FIXME(AIX): Implement this
   found = 1;
 
 #else