Minor Cygwin patches

[JonY]

Hi,

Attached are some minor patches, comments?
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35536

--- origsrc/gcc-4.5.1/libjava/gnu/java/nio/channels/natFileChannelPosix.cc	2007-04-02 20:05:50.000000000 -0500
+++ src/gcc-4.5.1/libjava/gnu/java/nio/channels/natFileChannelPosix.cc	2010-10-27 13:39:34.044718100 -0500
@@ -386,7 +386,7 @@ FileChannelImpl::available (void)
 
 #if defined (FIONREAD)
   r = ::ioctl (fd, FIONREAD, &num);
-  if (r == -1 && errno == ENOTTY)
+  if (r == -1 && (errno == ENOTTY || errno == EINVAL))
     {
       // If the ioctl doesn't work, we don't care.
       r = 0;
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--- origsrc/gcc-4.5.0/gcc/testsuite/gcc.target/i386/pr25993.c	2008-02-26 01:38:34.000000000 +0000
+++ src/gcc-4.5.0/gcc/testsuite/gcc.target/i386/pr25993.c	2010-04-25 16:17:21.703125000 +0100
@@ -1,5 +1,5 @@
 /* { dg-do assemble } */
-/* { dg-skip-if "" { "*-*-darwin*" "*-*-mingw*" } { "*" } { "" } } */
+/* { dg-skip-if "" { "*-*-darwin*" "*-*-mingw*" "*-*-cygwin*" } { "*" } { "" } } */
 /* { dg-options "-std=c99 -x assembler-with-cpp" } */
 
 #ifndef __ASSEMBLER__
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Accept -pthread and -rdynamic for compatibility with Linux.
Add --large-address-aware, and use --tsaware, only with EXEs.

--- origsrc/gcc-4.7.2/gcc/config.gcc	2012-09-12 04:03:54.000000000 -0500
+++ src/gcc-4.7.2/gcc/config.gcc	2013-03-11 03:41:03.674656700 -0500
@@ -1417,7 +1417,7 @@ i[34567]86-*-cygwin*)
 	xm_file=i386/xm-cygwin.h
 	tmake_file="${tmake_file} i386/t-cygming t-slibgcc"
 	target_gtfiles="\$(srcdir)/config/i386/winnt.c"
-	extra_options="${extra_options} i386/cygming.opt"
+	extra_options="${extra_options} i386/cygming.opt i386/cygwin.opt"
 	extra_objs="winnt.o winnt-stubs.o"
 	c_target_objs="${c_target_objs} msformat-c.o"
 	cxx_target_objs="${cxx_target_objs} winnt-cxx.o msformat-c.o"
--- origsrc/gcc-4.7.2/gcc/config/i386/cygwin.h	2012-02-13 15:46:38.000000000 -0600
+++ src/gcc-4.7.2/gcc/config/i386/cygwin.h	2013-03-06 00:13:25.986558800 -0600
@@ -22,7 +22,7 @@ along with GCC; see the file COPYING3.
 #define EXTRA_OS_CPP_BUILTINS()  /* Nothing.  */
 
 #undef CPP_SPEC
-#define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
+#define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} %{pthread: } \
   -D__CYGWIN32__ -D__CYGWIN__ %{!ansi:-Dunix} -D__unix__ -D__unix \
   %{mwin32:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ %{!ansi:-DWINNT}} \
   %{!nostdinc:%{!mno-win32:-idirafter ../include/w32api%s -idirafter ../../include/w32api%s}}\
@@ -49,11 +49,7 @@ along with GCC; see the file COPYING3.
  %{static|static-libgcc:-lgcc -lgcc_eh} \
  %{!static: \
    %{!static-libgcc: \
-     %{!shared: \
-       %{!shared-libgcc:-lgcc -lgcc_eh} \
-       %{shared-libgcc:-lgcc_s -lgcc} \
-      } \
-     %{shared:-lgcc_s -lgcc} \
+     -lgcc_s -lgcc \
     } \
   } "
 #else
@@ -72,6 +72,7 @@ along with GCC; see the file COPYING3.
 #undef LIB_SPEC
 #define LIB_SPEC "\
   %{pg:-lgmon} \
+  %{pthread: } \
   -lcygwin \
   %{mwindows:-lgdi32 -lcomdlg32} \
   -ladvapi32 -lshell32 -luser32 -lkernel32"
@@ -115,7 +116,9 @@ along with GCC; see the file COPYING3.
   %{shared: --shared} %{mdll:--dll} \
   %{static:-Bstatic} %{!static:-Bdynamic} \
   %{shared|mdll: --enable-auto-image-base -e __cygwin_dll_entry@12} \
-  --dll-search-prefix=cyg -tsaware"
+  --dll-search-prefix=cyg \
+  %{rdynamic: --export-all-symbols} \
+  %{!shared: %{!mdll: --large-address-aware --tsaware}}"
 
 /* Binutils does not handle weak symbols from dlls correctly.  For now,
    do not use them unnecessarily in gthr-posix.h.  */
--- origsrc/gcc-4.7.2/gcc/config/i386/cygwin.opt	1969-12-31 18:00:00.000000000 -0600
+++ src/gcc-4.7.2/gcc/config/i386/cygwin.opt	2013-03-11 03:36:36.556378400 -0500
@@ -0,0 +1,27 @@
+; Cygwin-specific options.
+
+; Copyright (C) 2005, 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+;
+; This file is part of GCC.
+;
+; GCC is free software; you can redistribute it and/or modify it under
+; the terms of the GNU General Public License as published by the Free
+; Software Foundation; either version 3, or (at your option) any later
+; version.
+;
+; GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+; WARRANTY; without even the implied warranty of MERCHANTABILITY or
+; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+; for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with GCC; see the file COPYING3.  If not see
+; <http://www.gnu.org/licenses/>.
+
+pthread
+Driver
+
+rdynamic
+Driver
+
+; Retain blank line above
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