Use rcrt1.o%s/grcrt1.o%s to relocate static PIE

crt1.o is used to create dynamic and non-PIE static executables.  Static
PIE needs to link with rcrt1.o, instead of crt1.o, which is also used by
musl libc and OpenBSD:

https://gcc.gnu.org/ml/gcc/2015-06/msg00008.html

to relocate static PIE at run-time.  When -pg is used with -static-pie,
grcrt1.o should be used.

	* config/gnu-user.h (GNU_USER_TARGET_STARTFILE_SPEC): Use
	rcrt1.o%s/grcrt1.o%s for -static-pie.

From-SVN: r254890

gcc/ChangeLog

@@ -1,3 +1,8 @@
+2017-11-17  H.J. Lu  <[email protected]>
+
+	* config/gnu-user.h (GNU_USER_TARGET_STARTFILE_SPEC): Use
+	rcrt1.o%s/grcrt1.o%s for -static-pie.
+
 2017-11-17  Jan Hubicka  <[email protected]>
 
 	* i386.c (ix86_multiplication_cost, ix86_division_cost,

gcc/config/gnu-user.h

@@ -51,9 +51,10 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #if defined HAVE_LD_PIE
 #define GNU_USER_TARGET_STARTFILE_SPEC \
   "%{shared:; \
-     pg|p|profile:gcrt1.o%s; \
+     pg|p|profile:%{static-pie:grcrt1.o%s;:gcrt1.o%s}; \
      static:crt1.o%s; \
-     static-pie|" PIE_SPEC ":Scrt1.o%s; \
+     static-pie:rcrt1.o%s; \
+     " PIE_SPEC ":Scrt1.o%s; \
      :crt1.o%s} \
    crti.o%s \
    %{static:crtbeginT.o%s; \