build: Remove HAVE_LD_EH_FRAME_CIEV3

Old versions of Solaris ld and GNU ld didn't support CIEv3 in .eh_frame.
To avoid this breaking the build

	[build] Default to DWARF 4 on Solaris if linker supports CIEv3
	http://gcc.gnu.org/ml/gcc-patches/2013-03/msg00669.html

checked for the necessary linker support, defaulting to DWARF-2 if
necessary.  Solaris ld was fixed in Solaris 11.1, GNU ld in binutils
2.16, so this is long obsolete and only used in Solaris code anyway.

This patch thus removes both the configure check and
solaris_override_options.

Bootstrapped without regressions on i386-pc-solaris2.11 and
sparc-sun-solaris2.11.

2025-02-12  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	gcc:
	* configure.ac (gcc_cv_ld_eh_frame_ciev3): Remove.
	* configure, config.in: Regenerate.
	* config/sol2.cc (solaris_override_options): Remove.
	* config/sol2.h (SUBTARGET_OVERRIDE_OPTIONS): Remove.
	* config/sol2-protos.h (solaris_override_options): Remove.

diff --git a/gcc/config.in b/gcc/config.in
index 3b06533c48290bd4620a546461d1127801380896..45ae9fb222eb93e63941bc3048ddc1cf69be6f07 100644 (file)
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -1773,12 +1773,6 @@
 #endif
 
 
-/* Define 0/1 if your linker supports CIE v3 in .eh_frame. */
-#ifndef USED_FOR_TARGET
-#undef HAVE_LD_EH_FRAME_CIEV3
-#endif
-
-
 /* Define if your linker supports .eh_frame_hdr. */
 #undef HAVE_LD_EH_FRAME_HDR
 

diff --git a/gcc/config/sol2-protos.h b/gcc/config/sol2-protos.h
index 2462b475c7fcb27df3dabd12a63cbd52ac2c9e46..70dd9583e6ce1a9a897301116a52a67f7112baa2 100644 (file)
--- a/gcc/config/sol2-protos.h
+++ b/gcc/config/sol2-protos.h
@@ -24,7 +24,6 @@ extern void solaris_elf_asm_comdat_section (const char *, unsigned int, tree);
 extern void solaris_file_end (void);
 extern void solaris_insert_attributes (tree, tree *);
 extern void solaris_output_init_fini (FILE *, tree);
-extern void solaris_override_options (void);
 
 /* In sol2-c.cc.  */
 extern void solaris_register_pragmas (void);

diff --git a/gcc/config/sol2.cc b/gcc/config/sol2.cc
index 9bd9722dff72381b54691138e96d364e95cbff34..f46bcfaf002306188ece2e2262f2ef63e5bcbdc4 100644 (file)
--- a/gcc/config/sol2.cc
+++ b/gcc/config/sol2.cc
@@ -291,12 +291,3 @@ solaris_file_end (void)
   solaris_comdat_htab->traverse <void *, solaris_define_comdat_signature>
     (NULL);
 }
-
-void
-solaris_override_options (void)
-{
-  /* Older versions of Solaris ld cannot handle CIE version 3 in .eh_frame.
-     Don't emit DWARF3/4 unless specifically selected if so.  */
-  if (!HAVE_LD_EH_FRAME_CIEV3 && !OPTION_SET_P (dwarf_version))
-    dwarf_version = 2;
-}

diff --git a/gcc/config/sol2.h b/gcc/config/sol2.h
index 9618b43c61783eb4d49a04429ecbeb6de3ff3727..2405c101aee32699f65bc8ac36b68c44a3b8cde0 100644 (file)
--- a/gcc/config/sol2.h
+++ b/gcc/config/sol2.h
@@ -119,11 +119,6 @@ along with GCC; see the file COPYING3.  If not see
     TARGET_SUB_OS_CPP_BUILTINS();                      \
   } while (0)
 
-#define SUBTARGET_OVERRIDE_OPTIONS                     \
-  do {                                                 \
-    solaris_override_options ();                       \
-  } while (0)
-
 #if DEFAULT_ARCH32_P
 #define MULTILIB_DEFAULTS { "m32" }
 #else

diff --git a/gcc/configure b/gcc/configure
index e36d1d91612a3317f7361432807189621ad2a8ac..69a9cf7af5f552b2405b7c27abbfeb39a26aebbc 100755 (executable)
--- a/gcc/configure
+++ b/gcc/configure
@@ -32335,46 +32335,6 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_eh_frame_hdr" >&5
 $as_echo "$gcc_cv_ld_eh_frame_hdr" >&6; }
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker CIEv3 in .eh_frame support" >&5
-$as_echo_n "checking linker CIEv3 in .eh_frame support... " >&6; }
-gcc_cv_ld_eh_frame_ciev3=no
-if test $in_tree_ld = yes ; then
-  if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
-     && test $in_tree_ld_is_elf = yes; then
-    gcc_cv_ld_eh_frame_ciev3=yes
-  fi
-elif test x$gcc_cv_ld != x; then
-  if echo "$ld_ver" | grep GNU > /dev/null; then
-    gcc_cv_ld_eh_frame_ciev3=yes
-    if test 0"$ld_date" -lt 20040513; then
-      if test -n "$ld_date"; then
-       # If there was date string, but was earlier than 2004-05-13, fail
-       gcc_cv_ld_eh_frame_ciev3=no
-      elif test "$ld_vers_major" -lt 2; then
-       gcc_cv_ld_eh_frame_ciev3=no
-      elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
-       gcc_cv_ld_eh_frame_ciev3=no
-      fi
-    fi
-  else
-    case "$target" in
-      *-*-solaris2*)
-        # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
-        if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
-          gcc_cv_ld_eh_frame_ciev3=yes
-        fi
-        ;;
-    esac
-  fi
-fi
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE_LD_EH_FRAME_CIEV3 `if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`
-_ACEOF
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_eh_frame_ciev3" >&5
-$as_echo "$gcc_cv_ld_eh_frame_ciev3" >&6; }
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking linker position independent executable support" >&5
 $as_echo_n "checking linker position independent executable support... " >&6; }
 gcc_cv_ld_pie=no

diff --git a/gcc/configure.ac b/gcc/configure.ac
index 8fab93c9365496062583c5bd8ace402c8a797817..845827a340f7a3c36ef21b59a516af265c04ffe2 100644 (file)
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -6101,42 +6101,6 @@ if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
 fi
 AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
 
-AC_MSG_CHECKING(linker CIEv3 in .eh_frame support)
-gcc_cv_ld_eh_frame_ciev3=no
-if test $in_tree_ld = yes ; then
-  if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \
-     && test $in_tree_ld_is_elf = yes; then
-    gcc_cv_ld_eh_frame_ciev3=yes
-  fi
-elif test x$gcc_cv_ld != x; then
-  if echo "$ld_ver" | grep GNU > /dev/null; then
-    gcc_cv_ld_eh_frame_ciev3=yes
-    if test 0"$ld_date" -lt 20040513; then
-      if test -n "$ld_date"; then
-       # If there was date string, but was earlier than 2004-05-13, fail
-       gcc_cv_ld_eh_frame_ciev3=no
-      elif test "$ld_vers_major" -lt 2; then
-       gcc_cv_ld_eh_frame_ciev3=no
-      elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then
-       gcc_cv_ld_eh_frame_ciev3=no
-      fi
-    fi
-  else
-    case "$target" in
-      *-*-solaris2*)
-        # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1.
-        if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then
-          gcc_cv_ld_eh_frame_ciev3=yes
-        fi
-        ;;
-    esac
-  fi
-fi
-AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3,
-  [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`],
-  [Define 0/1 if your linker supports CIE v3 in .eh_frame.])
-AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3)
-
 AC_MSG_CHECKING(linker position independent executable support)
 gcc_cv_ld_pie=no
 if test $in_tree_ld = yes ; then