From 5fa3ea21352a956a05859c65a2107f019c16013c Mon Sep 17 00:00:00 2001
From: Dave Korn <dave.korn.cygwin@gmail.com>
Date: Tue, 6 Dec 2011 20:31:31 +0000
Subject: [PATCH] Makefile.in (LIBGNAT_TARGET_PAIRS [windows targets]):
 Correctly detect cygwin...

	* gcc-interface/Makefile.in (LIBGNAT_TARGET_PAIRS [windows targets]):
	Correctly detect cygwin, which no longer has the '32' suffix, and use
	appropriate implementations of the sockets and memory packages.
	* sysdep.c (WIN_SETMODE): New define to choose the correct spelling of
	setmode/_setmode for MinGW and Cygwin, respectively.
	(__gnat_set_binary_mode [windows targets]): Use the above, and enable
	the windows version for Cygwin as well as MinGW.
	(__gnat_set_text_mode [windows targets]): Likewise.
	(__gnat_ttyname [windows targets]): Provide a Cygwin implementation
	in addition to the MinGW version.
	(__gnat_is_windows_xp): Make available to Cygwin as well as MinGW.
	(__gnat_get_stack_bounds): Likewise.

From-SVN: r182065
---
 gcc/ada/ChangeLog                 | 15 +++++++++
 gcc/ada/gcc-interface/Makefile.in | 24 +++++++++++---
 gcc/ada/sysdep.c                  | 53 ++++++++++++++++++++++---------
 3 files changed, 72 insertions(+), 20 deletions(-)

diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index f9977b6a37a..94875aba18a 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,3 +1,18 @@
+2011-12-06  Dave Korn  <dave.korn.cygwin@gmail.com>
+
+	* gcc-interface/Makefile.in (LIBGNAT_TARGET_PAIRS [windows targets]):
+	Correctly detect cygwin, which no longer has the '32' suffix, and use
+	appropriate implementations of the sockets and memory packages.
+	* sysdep.c (WIN_SETMODE): New define to choose the correct spelling of
+	setmode/_setmode for MinGW and Cygwin, respectively.
+	(__gnat_set_binary_mode [windows targets]): Use the above, and enable
+	the windows version for Cygwin as well as MinGW.
+	(__gnat_set_text_mode [windows targets]): Likewise.
+	(__gnat_ttyname [windows targets]): Provide a Cygwin implementation
+	in addition to the MinGW version.
+	(__gnat_is_windows_xp): Make available to Cygwin as well as MinGW.
+	(__gnat_get_stack_bounds): Likewise.
+
 2011-12-05  Bob Duff  <duff@adacore.com>
 
 	* sem_ch4.adb: Minor comment fix.
diff --git a/gcc/ada/gcc-interface/Makefile.in b/gcc/ada/gcc-interface/Makefile.in
index 32d8e428178..f6aac1c38e7 100644
--- a/gcc/ada/gcc-interface/Makefile.in
+++ b/gcc/ada/gcc-interface/Makefile.in
@@ -1580,18 +1580,32 @@ ifeq ($(strip $(filter-out avr none powerpc% eabispe leon% erc32% unknown elf,$(
   indepsw.adb<indepsw-gnu.adb
 endif
 
-ifeq ($(strip $(filter-out cygwin32% mingw32% pe,$(osys))),)
-  LIBGNAT_TARGET_PAIRS = \
+ifeq ($(strip $(filter-out cygwin% mingw32% pe,$(osys))),)
+  # Cygwin provides a full Posix environment, and so we use the default
+  # versions of s-memory and g-socthi rather than the Windows-specific
+  # MinGW versions.  Ideally we would use all the default versions for
+  # Cygwin and none of the MinGW versions, but for historical reasons
+  # the Cygwin port has always been a CygMing frankenhybrid and it is
+  # a long-term project to disentangle them.
+  ifeq ($(strip $(filter-out cygwin%,$(osys))),)
+    LIBGNAT_TARGET_PAIRS = \
+    s-memory.adb<s-memory.adb \
+    g-socthi.ads<g-socthi.ads \
+    g-socthi.adb<g-socthi.adb
+  else
+    LIBGNAT_TARGET_PAIRS = \
+    s-memory.adb<s-memory-mingw.adb \
+    g-socthi.ads<g-socthi-mingw.ads \
+    g-socthi.adb<g-socthi-mingw.adb
+  endif
+  LIBGNAT_TARGET_PAIRS += \
   a-dirval.adb<a-dirval-mingw.adb \
   a-excpol.adb<a-excpol-abort.adb \
   s-gloloc.adb<s-gloloc-mingw.adb \
   s-inmaop.adb<s-inmaop-dummy.adb \
-  s-memory.adb<s-memory-mingw.adb \
   s-taspri.ads<s-taspri-mingw.ads \
   s-tasinf.adb<s-tasinf-mingw.adb \
   s-tasinf.ads<s-tasinf-mingw.ads \
-  g-socthi.ads<g-socthi-mingw.ads \
-  g-socthi.adb<g-socthi-mingw.adb \
   g-stsifd.adb<g-stsifd-sockets.adb \
   g-soliop.ads<g-soliop-mingw.ads \
   $(ATOMICS_TARGET_PAIRS)
diff --git a/gcc/ada/sysdep.c b/gcc/ada/sysdep.c
index a4456f56a24..2b99a32b132 100644
--- a/gcc/ada/sysdep.c
+++ b/gcc/ada/sysdep.c
@@ -120,38 +120,44 @@ extern struct tm *localtime_r(const time_t *, struct tm *);
 
 */
 
-#if defined(WINNT)
+#if defined (WINNT) || defined (__CYGWIN__)
 
 const char __gnat_text_translation_required = 1;
 
+#ifdef __CYGWIN__
+#define WIN_SETMODE setmode
+#include <io.h>
+#else
+#define WIN_SETMODE _setmode
+#endif
+
 void
 __gnat_set_binary_mode (int handle)
 {
-  _setmode (handle, O_BINARY);
+  WIN_SETMODE (handle, O_BINARY);
 }
 
 void
 __gnat_set_text_mode (int handle)
 {
-  _setmode (handle, O_TEXT);
+  WIN_SETMODE (handle, O_TEXT);
 }
 
-#ifdef __MINGW32__
-#include <windows.h>
-
-/* Return the name of the tty.   Under windows there is no name for
-   the tty, so this function, if connected to a tty, returns the generic name
-   "console".  */
+#ifdef __CYGWIN__
 
 char *
 __gnat_ttyname (int filedes)
 {
-  if (isatty (filedes))
-    return "console";
-  else
-    return NULL;
+  extern char *ttyname (int);
+
+  return ttyname (filedes);
 }
 
+#endif /* __CYGWIN__ */
+
+#if defined (__CYGWIN__) || defined (__MINGW32__)
+#include <windows.h>
+
 #ifndef RTX
 
 int __gnat_is_windows_xp (void);
@@ -178,7 +184,7 @@ __gnat_is_windows_xp (void)
   return is_win_xp;
 }
 
-#endif
+#endif /* !RTX */
 
 /* Get the bounds of the stack.  The stack pointer is supposed to be
    initialized to BASE when a thread is created and the stack can be extended
@@ -198,7 +204,24 @@ __gnat_get_stack_bounds (void **base, void **limit)
   *limit = tib->StackLimit;
 }
 
-#endif /* !__MINGW32__ */
+#endif /* __CYGWIN__ || __MINGW32__ */
+
+#ifdef __MINGW32__
+
+/* Return the name of the tty.   Under windows there is no name for
+   the tty, so this function, if connected to a tty, returns the generic name
+   "console".  */
+
+char *
+__gnat_ttyname (int filedes)
+{
+  if (isatty (filedes))
+    return "console";
+  else
+    return NULL;
+}
+
+#endif /* __MINGW32__ */
 
 #else