Remove old combreloc hack

It has not been needed for many years and gets in the way of
portable dumping, address sanitization, etc.  See:
https://lists.gnu.org/r/emacs-devel/2016-12/msg00147.html
* configure.ac (LDFLAGS_NOCOMBRELOC, emacs_cv_znocombreloc):
Remove.  All uses removed.
* etc/PROBLEMS: Remove discussion of combreloc problems.

diff --git a/configure.ac b/configure.ac
index eddeb5073c948c28730afb393969f4ae7e8dd939..4fcb846c608b3aa61265218d81524bd4f71f5972 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1333,39 +1333,6 @@ else
     ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
 fi
 
-dnl We need -znocombreloc if we're using a relatively recent GNU ld.
-dnl If we can link with the flag, it shouldn't do any harm anyhow.
-dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
-dnl if not built to support GNU ld.
-
-dnl For a long time, -znocombreloc was added to LDFLAGS rather than
-dnl LD_SWITCH_SYSTEM_TEMACS.  That is:
-dnl * inappropriate, as LDFLAGS is a user option but this is essential.
-dnl   Eg "make LDFLAGS=... all" could run into problems,
-dnl   https://bugs.debian.org/684788
-dnl * unnecessary, since temacs is the only thing that actually needs it.
-dnl   Indeed this is where it was originally, prior to:
-dnl   https://lists.gnu.org/r/emacs-pretest-bug/2004-03/msg00170.html
-if test x$GCC = xyes; then
-  LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
-else
-  LDFLAGS_NOCOMBRELOC="-znocombreloc"
-fi
-
-AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
-[late_LDFLAGS="$LDFLAGS"
-LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
-
-AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
-  [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
-
-LDFLAGS="$late_LDFLAGS"])
-
-if test x$emacs_cv_znocombreloc = xno; then
-  LDFLAGS_NOCOMBRELOC=
-fi
-
-
 AC_CACHE_CHECK([whether addresses are sanitized],
   [emacs_cv_sanitize_address],
   [AC_COMPILE_IFELSE(
@@ -5341,8 +5308,6 @@ if test x$ac_enable_profiling != x ; then
   esac
 fi
 
-LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
-
 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
 
 ## Common for all window systems

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 5a8618f71e8b9d6c890f40ff0fbf9a4055b64679..fe59b52c7590ee6f06944debe43e10f59f10c54c 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -192,18 +192,6 @@ Upgrading to a newer version of Exceed has been reported to prevent
 these crashes.  You should consider switching to a free X server, such
 as Xming or Cygwin/X.
 
-** Emacs crashes with SIGSEGV in XtInitializeWidgetClass.
-
-It crashes on X, but runs fine when called with option "-nw".
-
-This has been observed when Emacs is linked with GNU ld but without passing
-the -z nocombreloc flag.  Emacs normally knows to pass the -z nocombreloc
-flag when needed, so if you come across a situation where the flag is
-necessary but missing, please report it via M-x report-emacs-bug.
-
-On platforms such as Solaris, you can also work around this problem by
-configuring your compiler to use the native linker instead of GNU ld.
-
 ** When Emacs is compiled with Gtk+, closing a display kills Emacs.
 
 There is a long-standing bug in GTK that prevents it from recovering