sysv4.h (CHOOSE_DYNAMIC_LINKER): Default to GLIBC when no C library is specified.

	* config/rs6000/sysv4.h (CHOOSE_DYNAMIC_LINKER): Default to GLIBC
	when no C library is specified.

From-SVN: r162408

gcc/ChangeLog

+2010-07-22  Maxim Kuvyrkov  <maxim@codesourcery.com>
+
+	* config/rs6000/sysv4.h (CHOOSE_DYNAMIC_LINKER): Default to GLIBC
+	when no C library is specified.
+
 2010-07-22  Martin Jambor  <mjambor@suse.cz>
 
 	* ipa-prop.h (struct ipa_node_params): Updated comment.

gcc/config/rs6000/sysv4.h

@@ -905,7 +905,7 @@ SVR4_ASM_SPEC \
 #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
 #if DEFAULT_LIBC == LIBC_UCLIBC
 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
-#elif DEFAULT_LIBC == LIBC_GLIBC
+#elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
 #define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
 #else
 #error "Unsupported DEFAULT_LIBC"