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--- origsrc/gcc-5.3.0/config/mt-cygwin 1969-12-31 18:00:00.000000000 -0600
+++ src/gcc-5.3.0/config/mt-cygwin 2016-02-04 01:48:00.058340400 -0600
@@ -0,0 +1 @@
+CXXFLAGS_FOR_TARGET += -D_GNU_SOURCE
--- origsrc/gcc-5.3.0/configure.ac 2015-05-03 12:29:57.000000000 -0500
+++ src/gcc-5.3.0/configure.ac 2016-02-03 17:34:52.238164400 -0600
@@ -2519,6 +2519,9 @@ case "${target}" in
nios2-*-elf*)
target_makefile_frag="config/mt-nios2-elf"
;;
+ *-*-cygwin*)
+ target_makefile_frag="config/mt-cygwin"
+ ;;
*-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
target_makefile_frag="config/mt-gnu"
;;
--- origsrc/gcc-5.3.0/configure 2015-05-03 12:29:57.000000000 -0500
+++ src/gcc-5.3.0/configure 2016-02-04 02:06:24.917639700 -0600
@@ -6873,6 +6873,9 @@ case "${target}" in
nios2-*-elf*)
target_makefile_frag="config/mt-nios2-elf"
;;
+ *-*-cygwin*)
+ target_makefile_frag="config/mt-cygwin"
+ ;;
*-*-linux* | *-*-gnu* | *-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
target_makefile_frag="config/mt-gnu"
;;
--- origsrc/gcc-5.3.0/gcc/config/i386/cygwin.h 2016-02-03 16:49:24.261755400 -0600
+++ src/gcc-5.3.0/gcc/config/i386/cygwin.h 2016-02-04 02:04:29.163940800 -0600
@@ -105,6 +105,9 @@ along with GCC; see the file COPYING3.
--wrap _ZdlPvRKSt9nothrow_t \
--wrap _ZdaPvRKSt9nothrow_t \
"
+/* The GNU C++ standard library requires that these macros be defined. */
+#undef CPLUSPLUS_CPP_SPEC
+#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
#if defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)
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