Install back PR target/47230 fix (Revert the revert).

From-SVN: r221739

ChangeLog

@@ -46,15 +46,6 @@
 
 	* MAINTAINERS (Various Maintainers): Add self.
 
-2015-02-25  Uros Bizjak  <ubizjak@gmail.com>
-
-	Revert:
-	2014-07-26  Uros Bizjak  <ubizjak@gmail.com>
-
-	PR target/47230
-	* configure.ac (alpha*-*-linux*): Use mh-alpha-linux.
-	* configure: Regenerate.
-
 2015-02-20  Thomas Schwinge  <thomas@codesourcery.com>
 
 	* configure.ac [--enable-as-accelerator-for] (enable_languages):

config/ChangeLog

@@ -3,14 +3,6 @@
 	PR bootstrap/65537
 	* bootstrap-lto-noplugin.mk: New build configuration.
 
-2015-02-25  Uros Bizjak  <ubizjak@gmail.com>
-
-	Revert:
-	2014-07-26  Uros Bizjak  <ubizjak@gmail.com>
-
-	PR target/47230
-	* mh-alpha-linux: New file.
-
 2015-02-18  Thomas Schwinge  <thomas@codesourcery.com>
 
 	* elf.m4 (ACX_ELF_TARGET_IFELSE): nvptx-*-none isn't ELF.

config/mh-alpha-linux

+# Prevent GPREL16 relocation truncation
+LDFLAGS += -Wl,--no-relax
+BOOT_LDFLAGS += -Wl,--no-relax

configure

@@ -3969,6 +3969,9 @@ fi
   *-mingw*)
     host_makefile_frag="config/mh-mingw"
     ;;
+  alpha*-*-linux*)
+    host_makefile_frag="config/mh-alpha-linux"
+    ;;
   hppa*-hp-hpux10*)
     host_makefile_frag="config/mh-pa-hpux10"
     ;;

configure.ac

@@ -1297,6 +1297,9 @@ case "${host}" in
   *-mingw*)
     host_makefile_frag="config/mh-mingw"
     ;;
+  alpha*-*-linux*)
+    host_makefile_frag="config/mh-alpha-linux"
+    ;;
   hppa*-hp-hpux10*)
     host_makefile_frag="config/mh-pa-hpux10"
     ;;

gcc/ChangeLog

@@ -2203,12 +2203,6 @@
 	* config/arm/arm.md (arm_comparison_operator): Disabled if not allow
 	volatile memory access in IT block
 
-2015-02-25  Uros Bizjak  <ubizjak@gmail.com>
-
-	PR target/47230
-	* doc/install.texi (Specific, alpha*-*-*): Document that binutils 2.25
-	or newer are required.
-
 2015-02-25  Kai Tietz  <ktietz@redhat.com>
 
 	PR tree-optimization/61917

gcc/doc/install.texi

@@ -3425,11 +3425,10 @@ alpha-based platforms using ELF (in particular, ignore this section for
 DEC OSF/1, Digital UNIX and Tru64 UNIX)@.  In addition to reading this
 section, please read all other sections that match your target.
 
-Binutils 2.25 or newer are required.
-Versions prior to 2.25 have faulty relaxation pass that may result in
-GPREL16 relocation truncation errors.  Versions prior to 2.11.2 had a
-number of problems with DWARF 2 debugging information, not the least of
-which is incorrect linking of shared libraries.
+We require binutils 2.11.2 or newer.
+Previous binutils releases had a number of problems with DWARF 2
+debugging information, not the least of which is incorrect linking of
+shared libraries.
 
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