Simplify LD_SWITCH_SYSTEM_TEMACS usage.

* s/freebsd.h (LD_SWITCH_SYSTEM_TEMACS):
* s/gnu-linux.h (LD_SWITCH_SYSTEM_TEMACS): Remove, configure
detects -znocombreloc and passes it to the linker
* s/hpux10-20.h (LD_SWITCH_SYSTEM_TEMACS): Remove, empty.

src/ChangeLog

+2010-04-21  Dan Nicolaescu  <local_user@dannlt>
+
+	Simplify LD_SWITCH_SYSTEM_TEMACS usage.
+	* s/freebsd.h (LD_SWITCH_SYSTEM_TEMACS):
+	* s/gnu-linux.h (LD_SWITCH_SYSTEM_TEMACS): Remove, configure
+	detects -znocombreloc and passes it to the linker
+	* s/hpux10-20.h (LD_SWITCH_SYSTEM_TEMACS): Remove, empty.
+
 2010-04-21  Glenn Morris  <rgm@gnu.org>
 
 	* Makefile.in (LIBSELINUX_LIBS): Move out of #ifdef.

src/s/freebsd.h

@@ -113,13 +113,5 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #define POSIX_SIGNALS		1
 
-/* The `combreloc' setting became the default, and it seems to be
-   incompatible with unexec.  Symptom is an immediate SEGV in
-   XtInitializeWidget when starting Emacs under X11.  */
-
-#if defined __FreeBSD_version && __FreeBSD_version >= 500042
-#define LD_SWITCH_SYSTEM_TEMACS -znocombreloc
-#endif
-
 /* arch-tag: 426529ca-b7c4-448f-b10a-d4dcdc9c78eb
    (do not change this comment) */

src/s/gnu-linux.h

@@ -179,12 +179,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #define LD_SWITCH_SYSTEM LD_SWITCH_X_SITE_AUX
 #endif /* __mips__ */
 
-/* Link temacs with -z nocombreloc so that unexec works right, whether or
-   not -z combreloc is the default.  GNU ld ignores unknown -z KEYWORD
-   switches, so this also works with older versions that don't implement
-   -z combreloc.  */
-#define LD_SWITCH_SYSTEM_TEMACS -z nocombreloc
-
 #ifdef emacs
 #define INTERRUPT_INPUT
 #endif
@@ -201,7 +195,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 /* _BSD_SOURCE is redundant, at least in glibc2, since we define
    _GNU_SOURCE.  Left in in case it's relevant to libc5 systems and
    anyone's still using Emacs on those.  --fx 2002-12-14  */
-#define C_SWITCH_SYSTEM -D_BSD_SOURCE
+/* #define C_SWITCH_SYSTEM -D_BSD_SOURCE */
 
 /* Paul Abrahams <abrahams@equinox.shaysnet.com> says this is needed.  */
 #define LIB_MOTIF -lXm -lXpm
@@ -223,7 +217,7 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 /* Use BSD process groups, but use setpgid() instead of setpgrp() to
    actually set a process group. */
 /* Interesting: only GNU/Linux defines this,  but the BSDs do not... */
-#define BSD_PGRPS
+/* #define BSD_PGRPS */
 
 #define NARROWPROTO 1
 

src/s/hpux10-20.h

@@ -105,11 +105,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 /* This triggers a conditional in xfaces.c.  */
 #define XOS_NEEDS_TIME_H
 
-/* Don't use shared libraries.  unexec doesn't handle them.
-   Note GCC automatically passes -a archive to ld, and it has its own
-   conflicting -a.  */
-#define LD_SWITCH_SYSTEM_TEMACS
-
 #ifndef HAVE_LIBXMU
 /* HP-UX doesn't supply Xmu.  */
 #define LIBXMU