diff -Naur openjdk-7.271_p01/hotspot/src/os/linux/vm/jvm_linux.cpp openjdk-7.271_p01-copy/hotspot/src/os/linux/vm/jvm_linux.cpp
--- openjdk-7.271_p01/hotspot/src/os/linux/vm/jvm_linux.cpp	2020-10-15 21:59:37.903954981 -0400
+++ openjdk-7.271_p01-copy/hotspot/src/os/linux/vm/jvm_linux.cpp	2020-10-15 22:15:53.711949921 -0400
@@ -154,7 +154,9 @@
 #ifdef SIGSTKFLT
   "STKFLT",     SIGSTKFLT,      /* Stack fault.  */
 #endif
+#ifdef SIGCLD
   "CLD",        SIGCLD,         /* Same as SIGCHLD (System V).  */
+#endif
   "CHLD",       SIGCHLD,        /* Child status has changed (POSIX).  */
   "CONT",       SIGCONT,        /* Continue (POSIX).  */
   "STOP",       SIGSTOP,        /* Stop, unblockable (POSIX).  */
diff -Naur openjdk-7.271_p01/hotspot/src/os/linux/vm/os_linux.inline.hpp openjdk-7.271_p01-copy/hotspot/src/os/linux/vm/os_linux.inline.hpp
--- openjdk-7.271_p01/hotspot/src/os/linux/vm/os_linux.inline.hpp	2020-10-15 21:59:37.911954981 -0400
+++ openjdk-7.271_p01-copy/hotspot/src/os/linux/vm/os_linux.inline.hpp	2020-10-15 22:16:17.291949799 -0400
@@ -52,7 +52,7 @@
 
 #include <unistd.h>
 #include <sys/socket.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include <netdb.h>
 
 inline void* os::thread_local_storage_at(int index) {
diff -Naur openjdk-7.271_p01/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp openjdk-7.271_p01-copy/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp
--- openjdk-7.271_p01/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	2020-10-15 21:59:37.919954981 -0400
+++ openjdk-7.271_p01-copy/hotspot/src/os_cpu/linux_x86/vm/os_linux_x86.cpp	2020-10-15 22:17:32.267949410 -0400
@@ -73,7 +73,6 @@
 # include <pwd.h>
 # include <poll.h>
 # include <ucontext.h>
-# include <fpu_control.h>
 
 #ifdef AMD64
 #define REG_SP REG_RSP
@@ -534,6 +533,9 @@
   return true; // Mute compiler
 }
 
+#define _FPU_GETCW(cw) __asm__ __volatile__ ("fnstcw %0" : "=m" (*&cw))
+#define _FPU_SETCW(cw) __asm__ __volatile__ ("fldcw %0" : : "m" (*&cw))
+
 void os::Linux::init_thread_fpu_state(void) {
 #ifndef AMD64
   // set fpu to 53 bit precision
diff -Naur openjdk-7.271_p01/hotspot/src/os_cpu/linux_x86/vm/threadLS_linux_x86.hpp openjdk-7.271_p01-copy/hotspot/src/os_cpu/linux_x86/vm/threadLS_linux_x86.hpp
--- openjdk-7.271_p01/hotspot/src/os_cpu/linux_x86/vm/threadLS_linux_x86.hpp	2020-10-15 21:59:37.919954981 -0400
+++ openjdk-7.271_p01-copy/hotspot/src/os_cpu/linux_x86/vm/threadLS_linux_x86.hpp	2020-10-15 22:18:17.359949177 -0400
@@ -32,7 +32,9 @@
   // map stack pointer to thread pointer - see notes in threadLS_linux_x86.cpp
   #define SP_BITLENGTH  32
   #define PAGE_SHIFT    12
+  #ifndef PAGE_SIZE
   #define PAGE_SIZE     (1UL << PAGE_SHIFT)
+  #endif
   static Thread* _sp_map[1UL << (SP_BITLENGTH - PAGE_SHIFT)];
 
 public: