patch by David Lamparter to fix build errors for hardened/arm systems.
the logic in setjmp/__longjmp incorrectly tie to "PIC" to figure out
whether the code is going into a shared library when it should be using
"SHARED".  otherwise, building static PIC code goes wrong.

https://bugs.gentoo.org/336914
http://sourceware.org/ml/libc-ports/2011-09/msg00018.html

--- ports/sysdeps/arm/eabi/setjmp.S
+++ ports/sysdeps/arm/eabi/setjmp.S
@@ -37,7 +37,7 @@
 	add	a3, a3, a4
 	ldr	a3, [a3, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
 #else
-#ifdef PIC
+#ifdef SHARED
 	ldr	a3, 1f
 	ldr	a4, Lrtld_global_ro
 0:	add	a3, pc, a3
@@ -84,7 +84,7 @@
 Lrtld_local_ro:
 	.long	C_SYMBOL_NAME(_rtld_local_ro)(GOTOFF)
 #else
-#ifdef PIC
+#ifdef SHARED
 1:	.long	_GLOBAL_OFFSET_TABLE_ - 0b - 8
 Lrtld_global_ro:
 	.long	C_SYMBOL_NAME(_rtld_global_ro)(GOT)
--- ports/sysdeps/arm/eabi/__longjmp.S
+++ ports/sysdeps/arm/eabi/__longjmp.S
@@ -43,7 +43,7 @@
 	add	a2, a2, a3
 	ldr	a2, [a2, #RTLD_GLOBAL_RO_DL_HWCAP_OFFSET]
 #else
-#ifdef PIC
+#ifdef SHARED
   	ldr	a2, 1f
 	ldr	a3, Lrtld_global_ro
 0:	add	a2, pc, a2
@@ -87,7 +87,7 @@
 Lrtld_local_ro:
 	.long	C_SYMBOL_NAME(_rtld_local_ro)(GOTOFF)
 #else
-#ifdef PIC
+#ifdef SHARED
 1:	.long	_GLOBAL_OFFSET_TABLE_ - 0b - 8
 Lrtld_global_ro:
 	.long	C_SYMBOL_NAME(_rtld_global_ro)(GOT)