--- a/Source/JavaScriptCore/runtime/MachineContext.h
+++ b/Source/JavaScriptCore/runtime/MachineContext.h
@@ -188,7 +188,7 @@ static inline void*& stackPointerImpl(mcontext_t& machineContext)
 #error Unknown Architecture
 #endif
 
-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
+#elif OS(FUCHSIA) || defined(__linux__)
 
 #if CPU(X86)
     return reinterpret_cast<void*&>((uintptr_t&) machineContext.gregs[REG_ESP]);
@@ -335,7 +335,7 @@ static inline void*& framePointerImpl(mcontext_t& machineContext)
 #error Unknown Architecture
 #endif
 
-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
+#elif OS(FUCHSIA) || defined(__linux__)
 
 // The following sequence depends on glibc's sys/ucontext.h.
 #if CPU(X86)
@@ -482,7 +482,7 @@ static inline void*& instructionPointerImpl(mcontext_t& machineContext)
 #error Unknown Architecture
 #endif
 
-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
+#elif OS(FUCHSIA) || defined(__linux__)
 
 // The following sequence depends on glibc's sys/ucontext.h.
 #if CPU(X86)
@@ -639,7 +639,7 @@ inline void*& argumentPointer<1>(mcontext_t& machineContext)
 #error Unknown Architecture
 #endif
 
-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
+#elif OS(FUCHSIA) || defined(__linux__)
 
 // The following sequence depends on glibc's sys/ucontext.h.
 #if CPU(X86)
@@ -756,7 +756,7 @@ inline void*& llintInstructionPointer(mcontext_t& machineContext)
 #error Unknown Architecture
 #endif
 
-#elif OS(FUCHSIA) || defined(__GLIBC__) || defined(__BIONIC__)
+#elif OS(FUCHSIA) || defined(__linux__)
 
 // The following sequence depends on glibc's sys/ucontext.h.
 #if CPU(X86)
 
--- a/Source/WebCore/xml/XPathGrammar.cpp
+++ b/Source/WebCore/xml/XPathGrammar.cpp
@@ -966,7 +966,7 @@ int yydebug;
 #if YYERROR_VERBOSE
 
 # ifndef yystrlen
-#  if defined __GLIBC__ && defined _STRING_H
+#  if defined __linux__ && defined _STRING_H
 #   define yystrlen strlen
 #  else
 /* Return the length of YYSTR.  */
@@ -989,7 +989,7 @@ yystrlen (yystr)
 # endif
 
 # ifndef yystpcpy
-#  if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
+#  if defined __linux__ && defined _STRING_H && defined _GNU_SOURCE
 #   define yystpcpy stpcpy
 #  else
 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in