diff -Naur libreoffice-6.1.0.3/sal/osl/unx/thread.cxx libreoffice-6.1.0.3-patched/sal/osl/unx/thread.cxx
--- libreoffice-6.1.0.3/sal/osl/unx/thread.cxx    2018-08-02 22:54:54.000000000 +0300
+++ libreoffice-6.1.0.3-patched/sal/osl/unx/thread.cxx    2018-09-05 18:21:38.552838233 +0300
@@ -249,7 +249,7 @@
     short             nFlags)
 {
     Thread_Impl* pImpl;
-#if defined OPENBSD || ((defined MACOSX || defined LINUX) && !ENABLE_RUNTIME_OPTIMIZATIONS)
+#if defined OPENBSD || ((defined MACOSX || defined LINUX) && !ENABLE_RUNTIME_OPTIMIZATIONS) || (defined LINUX && !defined __GLIBC__)
     pthread_attr_t attr;
     size_t stacksize;
 #endif
@@ -265,7 +265,7 @@

     pthread_mutex_lock (&(pImpl->m_Lock));

-#if defined OPENBSD || ((defined MACOSX || defined LINUX) && !ENABLE_RUNTIME_OPTIMIZATIONS)
+#if defined OPENBSD || ((defined MACOSX || defined LINUX) && !ENABLE_RUNTIME_OPTIMIZATIONS) || (defined LINUX && !defined __GLIBC__)
     if (pthread_attr_init(&attr) != 0)
         return nullptr;

@@ -282,7 +282,7 @@

     if ((nRet = pthread_create (
         &(pImpl->m_hThread),
-#if defined OPENBSD || ((defined MACOSX || defined LINUX) && !ENABLE_RUNTIME_OPTIMIZATIONS)
+#if defined OPENBSD || ((defined MACOSX || defined LINUX) && !ENABLE_RUNTIME_OPTIMIZATIONS) || (defined LINUX && !defined __GLIBC__)
         &attr,
 #else
         PTHREAD_ATTR_DEFAULT,
@@ -301,7 +301,7 @@
         return nullptr;
     }

-#if defined OPENBSD || ((defined MACOSX || defined LINUX) && !ENABLE_RUNTIME_OPTIMIZATIONS)
+#if defined OPENBSD || ((defined MACOSX || defined LINUX) && !ENABLE_RUNTIME_OPTIMIZATIONS) || (defined LINUX && !defined __GLIBC__)
     pthread_attr_destroy(&attr);
 #endif