Patch from Richard Henderson to fix alpha-linux support.

* alpha/elf.h (LINK_SPEC): Conditionalize on USE_GNULIBC_1.
	* config.guess: Recognize alpha-linux-gnulibc1.
	* configure.in (alpha-*-linux-gnulibc1): New target.
	(alpha-*-linux-gnu*): Don't build crtbegin/end.

From-SVN: r14974

gcc/ChangeLog

@@ -1,3 +1,10 @@
+Wed Aug 27 15:49:12 1997  Richard Henderson  <rth@cygnus.com>
+
+	* alpha/elf.h (LINK_SPEC): Conditionalize on USE_GNULIBC_1.
+	* config.guess: Recognize alpha-linux-gnulibc1.
+	* configure.in (alpha-*-linux-gnulibc1): New target.
+	(alpha-*-linux-gnu*): Don't build crtbegin/end.
+
 Wed Aug 27 11:52:58 1997  Jim Wilson  <wilson@cygnus.com>
 
 	* m68k.md (iorsi3_internal): Readd ! TARGET_5200 check lost in

gcc/config.guess

@@ -506,6 +506,7 @@ EOF
 		ret \$31,(\$26),1
 		.end main
 EOF
+		LIBC=""
 		${CC-cc} dummy.s -o dummy 2>/dev/null
 		if test "$?" = 0 ; then
 			./dummy
@@ -516,10 +517,16 @@ EOF
 			2)	
 					UNAME_MACHINE="alphaev56"
 				;;	
-		esac	
-	  fi	
-	  rm -f dummy.s dummy
-	  echo ${UNAME_MACHINE}-unknown-linux-gnu ; exit 0
+			esac	
+
+			objdump --private-headers dummy | \
+			  grep ld.so.1 > /dev/null
+			if test "$?" = 0 ; then
+				LIBC="libc1"
+			fi
+		fi	
+		rm -f dummy.s dummy
+		echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC} ; exit 0
 	elif test "${UNAME_MACHINE}" = "mips" ; then
 	  cat >dummy.c <<EOF
 main(argc, argv)

gcc/config/alpha/elf.h

@@ -39,6 +39,15 @@ Currently only Linux uses this. */
 -Asystem(linux) -Acpu(alpha) -Amachine(alpha) -D__ELF__"
 
 #undef LINK_SPEC
+#ifdef USE_GNULIBC_1
+#define LINK_SPEC "-m elf64alpha -G 8 %{O*:-O3} %{!O*:-O1}	\
+  %{shared:-shared}						\
+  %{!shared:							\
+    %{!static:							\
+      %{rdynamic:-export-dynamic}				\
+      %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}		\
+    %{static:-static}}"
+#else
 #define LINK_SPEC "-m elf64alpha -G 8 %{O*:-O3} %{!O*:-O1}	\
   %{shared:-shared}						\
   %{!shared:							\
@@ -46,6 +55,7 @@ Currently only Linux uses this. */
       %{rdynamic:-export-dynamic}				\
       %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}}	\
     %{static:-static}}"
+#endif
 
 /* Output at beginning of assembler file.  */
 

gcc/configure.in

@@ -273,15 +273,25 @@ for machine in $build $host $target; do
 		fixincludes=Makefile.in
 		gas=yes gnu_ld=yes
 		;;
+	alpha*-*-linux-gnulibc1*)
+		tm_file="${tm_file} alpha/linux.h alpha/elf.h"
+		xm_file="${xm_file} alpha/xm-linux.h"
+		target_cpu_default="MASK_GAS"
+		tmake_file="t-linux t-linux-gnulibc1 alpha/t-linux"
+		xmake_file=none
+		fixincludes=Makefile.in
+		gas=yes gnu_ld=yes
+ 		if [[ x$enable_threads = xyes ]]; then
+ 			thread_file='posix'
+ 		fi
+		;;
 	alpha*-*-linux-gnu*)
 		tm_file="${tm_file} alpha/linux.h alpha/elf.h"
 		xm_file="${xm_file} alpha/xm-linux.h"
 		target_cpu_default="MASK_GAS"
-		gas=no
 		tmake_file="t-linux alpha/t-linux"
 		xmake_file=none
 		fixincludes=Makefile.in
-		extra_parts="crtbegin.o crtbeginS.o crtend.o crtendS.o"
 		gas=yes gnu_ld=yes
  		if [[ x$enable_threads = xyes ]]; then
  			thread_file='posix'