diff -Naur openjdk-7.271_p01/jdk/src/solaris/native/sun/awt/awt_xembed_server.c openjdk-7.271_p01-copy/jdk/src/solaris/native/sun/awt/awt_xembed_server.c
--- openjdk-7.271_p01/jdk/src/solaris/native/sun/awt/awt_xembed_server.c	2020-10-15 21:59:39.543954972 -0400
+++ openjdk-7.271_p01-copy/jdk/src/solaris/native/sun/awt/awt_xembed_server.c	2020-10-15 22:28:01.183946150 -0400
@@ -35,7 +35,7 @@
 #include <X11/Xlib.h>
 #include <X11/Xatom.h>
 #include <Xm/MwmUtil.h>
-#ifdef __linux__
+#if defined(__linux__) && defined(__GLIBC__) && ! defined(__UCLIBC__)
 #include <execinfo.h>
 #endif
 #include <stdio.h>
@@ -835,7 +835,7 @@
     AWT_UNLOCK();
 }
 
-#ifdef __linux__
+#if defined(__linux__) && defined(__GLIBC__) && ! defined(__UCLIBC__)
 void
 print_stack (void)
 {
diff -Naur openjdk-7.271_p01/jdk/src/solaris/native/sun/xawt/XToolkit.c openjdk-7.271_p01-copy/jdk/src/solaris/native/sun/xawt/XToolkit.c
--- openjdk-7.271_p01/jdk/src/solaris/native/sun/xawt/XToolkit.c	2020-10-15 21:59:39.571954972 -0400
+++ openjdk-7.271_p01-copy/jdk/src/solaris/native/sun/xawt/XToolkit.c	2020-10-15 22:28:45.963945917 -0400
@@ -27,7 +27,7 @@
 #include <X11/Xutil.h>
 #include <X11/Xos.h>
 #include <X11/Xatom.h>
-#ifdef __linux__
+#if defined(__linux__) && defined(__GLIBC__) && ! defined(__UCLIBC__)
 #include <execinfo.h>
 #endif
 
@@ -782,7 +782,7 @@
     return ret;
 }
 
-#ifdef __linux__
+#if defined(__linux__) && defined(__GLIBC__) && ! defined(__UCLIBC__)
 void print_stack(void)
 {
   void *array[10];