libphobos: Support GNU/Hurd.

Author: yelninei

libphobos/configure.tgt

@@ -85,6 +85,9 @@ case "${target}" in
   x86_64-*-linux* | i?86-*-linux*)
 	LIBPHOBOS_SUPPORTED=yes
 	;;
+    x86_64-*-gnu* | i?86-*-gnu*)
+	LIBPHOBOS_SUPPORTED=yes
+	;;
   x86_64-*-netbsd* | i?86-*-netbsd*)
 	LIBPHOBOS_SUPPORTED=yes
 	;;

libphobos/libdruntime/Makefile.am

@@ -39,6 +39,7 @@ ALL_DRUNTIME_INSTALL_DSOURCES = $(DRUNTIME_DSOURCES) \
 	$(DRUNTIME_DSOURCES_LINUX) $(DRUNTIME_DSOURCES_NETBSD) \
 	$(DRUNTIME_DSOURCES_OPENBSD) $(DRUNTIME_DSOURCES_POSIX) \
 	$(DRUNTIME_DSOURCES_SOLARIS) $(DRUNTIME_DSOURCES_WINDOWS) \
+	$(DRUNTIME_DSOURCES_HURD) \
 	$(DRUNTIME_DSOURCES_GENERATED) $(DRUNTIME_DISOURCES) \
 	$(DRUNTIME_DSOURCES_ELF) $(DRUNTIME_DSOURCES_STDCXX)
 
@@ -77,6 +78,9 @@ endif
 if DRUNTIME_OS_SOLARIS
     DRUNTIME_SOURCES_CONFIGURED += $(DRUNTIME_DSOURCES_SOLARIS)
 endif
+if DRUNTIME_OS_HURD
+    DRUNTIME_SOURCES_CONFIGURED += $(DRUNTIME_DSOURCES_HURD)
+endif
 # CPU specific sources
 if DRUNTIME_CPU_AARCH64
     DRUNTIME_SOURCES_CONFIGURED += config/aarch64/switchcontext.S
@@ -361,6 +365,12 @@ DRUNTIME_DSOURCES_SOLARIS = core/sys/solaris/dlfcn.d \
 	core/sys/solaris/sys/regset.d core/sys/solaris/sys/types.d \
 	core/sys/solaris/thread.d core/sys/solaris/time.d
 
+DRUNTIME_DSOURCES_HURD = core/sys/hurd/config.d \
+	core/sys/hurd/dlfcn.d core/sys/hurd/elf.d \
+	core/sys/hurd/errno.d core/sys/hurd/execinfo.d \
+	core/sys/hurd/link.d core/sys/hurd/sys/types.d \
+	core/sys/hurd/time.d core/sys/hurd/unistd.d
+
 DRUNTIME_DSOURCES_WINDOWS = core/sys/windows/accctrl.d \
 	core/sys/windows/aclapi.d core/sys/windows/aclui.d \
 	core/sys/windows/basetsd.d core/sys/windows/basetyps.d \

libphobos/libdruntime/config/common/threadasm.S

@@ -22,7 +22,7 @@ a copy of the GCC Runtime Library Exception along with this program;
 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 <http://www.gnu.org/licenses/>.  */
 
-#if (__linux__ || __FreeBSD__ || __NetBSD__ || __OpenBSD__ || __DragonFly__) && __ELF__
+#if (__linux__ || __FreeBSD__ || __NetBSD__ || __OpenBSD__ || __DragonFly__ || __GNU__) && __ELF__
 /*
  * Mark the resulting object file as not requiring execution permissions on
  * stack memory. The absence of this section would mark the whole resulting

libphobos/libdruntime/config/x86/switchcontext.S

@@ -108,7 +108,7 @@ CSYM(fiber_switchContext):
 
 # endif /* defined(__ELF__) */
 
-# if defined(__MACH__)
+# if defined(__MACH__) && defined(__APPLE__)
 
 #  if defined(__i386__)
 
@@ -177,7 +177,7 @@ LASFDE1:
         .p2align 2,0
 LEFDE1:
 
-#  endif /* defined(__MACH__) && defined(__i386__) */
+#  endif /* defined(__MACH__) && defined(__APPLE__) && defined(__i386__) */
 
 #  if defined(__x86_64__) && !defined(__ILP32__)
 
@@ -247,8 +247,8 @@ LASFDE1:
         .p2align 3,0
 LEFDE1:
 
-#  endif /* defined(__MACH__) && defined(__x86_64__) && !defined(__ILP32__) */
+#  endif /* defined(__MACH__) && defined(__APPLE__) && defined(__x86_64__) && !defined(__ILP32__) */
 
-# endif /* defined (__MACH__) */
+# endif /* defined (__MACH__) && defined(__APPLE__) */
 
 #endif /* !defined(__CET__) */

libphobos/m4/druntime/os.m4

@@ -89,6 +89,8 @@ AC_DEFUN([DRUNTIME_OS_SOURCES],
       mingw*)  druntime_target_os_parsed="mingw"
              ;;
       *solaris*) druntime_target_os_parsed="solaris"
+            ;;
+      gnu*) druntime_target_os_parsed="hurd"
   esac
   AM_CONDITIONAL([DRUNTIME_OS_AIX],
                  [test "$druntime_target_os_parsed" = "aix"])
@@ -110,6 +112,8 @@ AC_DEFUN([DRUNTIME_OS_SOURCES],
                  [test "$druntime_target_os_parsed" = "mingw"])
   AM_CONDITIONAL([DRUNTIME_OS_SOLARIS],
                  [test "$druntime_target_os_parsed" = "solaris"])
+  AM_CONDITIONAL([DRUNTIME_OS_HURD],
+                 [test "$druntime_target_os_parsed" = "hurd"])
 
   druntime_target_posix="no"
   case "$druntime_cv_target_os" in