This patch is in use by Cygwin for years, upstream to GCC. Committed to trunk.
* gcc/config/i386/mingw.opt (fset-stack-executable): Removed.
* gcc/config/i386/cygming.opt (fset-stack-executable): Moved
from mingw.opt.
* gcc/config/i386/cygwin.h: Define CHECK_EXECUTE_STACK_ENABLED
* libgcc/config.host (*-cygwin): Include file from mingw
config/i386/enable-execute-stack-mingw32.c
--
Index: gcc/config/i386/cygming.opt
===================================================================
--- gcc/config/i386/cygming.opt (revision 250913)
+++ gcc/config/i386/cygming.opt (working copy)
@@ -50,6 +50,10 @@
Target Condition({defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)})
Compile code that relies on Cygwin DLL wrappers to support C++ operator
new/delete replacement.
+fset-stack-executable
+Common Report Var(flag_setstackexecutable) Init(1) Optimization
+For nested functions on stack executable permission is set.
+
posix
Driver
Index: gcc/config/i386/cygwin.h
===================================================================
--- gcc/config/i386/cygwin.h (revision 250913)
+++ gcc/config/i386/cygwin.h (working copy)
@@ -153,3 +153,7 @@
#endif
#define LIBGCC_SONAME "cyggcc_s" LIBGCC_EH_EXTN "-1.dll"
+/* Make stack executable to avoid DEP problems with trampolines. */
+#define HAVE_ENABLE_EXECUTE_STACK
+#undef CHECK_EXECUTE_STACK_ENABLED
+#define CHECK_EXECUTE_STACK_ENABLED flag_setstackexecutable
Index: gcc/config/i386/mingw.opt
===================================================================
--- gcc/config/i386/mingw.opt (revision 250913)
+++ gcc/config/i386/mingw.opt (working copy)
@@ -28,8 +28,4 @@
C ObjC C++ ObjC++ Var(warn_pedantic_ms_format) Init(1) Warning
Warn about none ISO msvcrt scanf/printf width extensions.
-fset-stack-executable
-Common Report Var(flag_setstackexecutable) Init(1) Optimization
-For nested functions on stack executable permission is set.
-
; Need to retain blank line above.
Index: libgcc/config.host
===================================================================
--- libgcc/config.host (revision 250913)
+++ libgcc/config.host (working copy)
@@ -324,6 +324,9 @@
i[34567]86-*-mingw* | x86_64-*-mingw*)
enable_execute_stack=config/i386/enable-execute-stack-mingw32.c
;;
+i[34567]86-*-cygwin* | x86_64-*-cygwin*)
+ enable_execute_stack=config/i386/enable-execute-stack-mingw32.c
+ ;;
*)
enable_execute_stack=enable-execute-stack-empty.c;
;;
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