pie.lib: generate compatible pie object files

Now compatible objects will be in $(obj)/compat/$(basename)-compat.o
I can't use just $(obj)/compat/$(basename).o as basename for file
will be the same as for native object, which wouldn't work by
the reason of CFLAGS_$(F) in nmk-ccflags.
So, I need different names for compatible/native objects.
Because I don't want to make a mess in parent directories,
I put this symlinks to compat/ dirs.
This is how I came to that decision (even if I do not like it).
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/arch/x86/compat/vdso-pie-compat.c

+../vdso-pie.c
\ No newline at end of file

criu/pie/Makefile.library

-target				:= native
+target			:= native
 
-$(target)-lib-y			+= log-simple.o
-$(target)-lib-y			+= util-fd.o
-$(target)-lib-y			+= util.o
-$(target)-lib-y			+= string.o
+CFLAGS			:= $(filter-out -DCONFIG_X86_64,$(CFLAGS))
+CFLAGS			+= -Wa,--noexecstack -fno-stack-protector -DCR_NOGLIBC
+
+CFLAGS_native		+= -fpie
+
+ifeq ($(ARCH),x86)
+        target		+= compat
+        CFLAGS_native	+= -DCONFIG_X86_64
+        CFLAGS_compat	+= -fno-pic -m32 -DCONFIG_X86_32
+endif
+
+OBJS			+= log-simple.o util-fd.o util.o string.o
 
 ifeq ($(VDSO),y)
-        $(target)-lib-y		+= util-vdso.o
-        $(target)-lib-y		+= parasite-vdso.o
-        $(target)-lib-y		+= ./$(ARCH_DIR)/vdso-pie.o
+        OBJS		+= util-vdso.o parasite-vdso.o ./$(ARCH_DIR)/vdso-pie.o
 
         ifeq ($(SRCARCH),aarch64)
-                $(target)-lib-y	+= ./$(ARCH_DIR)/intraprocedure.o
+                OBJS	+= ./$(ARCH_DIR)/intraprocedure.o
         endif
 
         ifeq ($(SRCARCH),ppc64)
-                $(target)-lib-y	+= ./$(ARCH_DIR)/vdso-trampoline.o
+                OBJS	+= ./$(ARCH_DIR)/vdso-trampoline.o
         endif
 endif
 
 ifeq ($(SRCARCH),ppc64)
-        $(target)-lib-y	+= ./$(ARCH_DIR)/memcpy_power7.o
-        $(target)-lib-y	+= ./$(ARCH_DIR)/memcmp_64.o
-        $(target)-lib-y	+= ./$(ARCH_DIR)/misc.o
+        OBJS		+= ./$(ARCH_DIR)/memcpy_power7.o		\
+			   ./$(ARCH_DIR)/memcmp_64.o ./$(ARCH_DIR)/misc.o
 endif
 
 ifeq ($(SRCARCH),x86)
         lib-y		+= ./$(ARCH_DIR)/memcpy.o
 endif
 
+define gen-native-objs
+native-lib-y		+= $(1)
+CFLAGS_$(1)		:= $(CFLAGS_native)
+endef
+
+compat-obj		= $(basename $(notdir $(1)))-compat.o
+define gen-compat-objs
+compat-lib-y		+= $(dir ./$(call objectify,$(1)))compat/$(compat-obj)
+CFLAGS_$(compat-obj)	:= $(CFLAGS_compat)
+endef
+
+$(eval $(call map,gen-native-objs,$(OBJS)))
+$(eval $(call map,gen-compat-objs,$(OBJS)))
+
 #
 # We can't provide proper mount implementation
 # in parasite code -- it requires run-time rellocation

criu/pie/compat/log-simple-compat.c

+../log-simple.c
\ No newline at end of file

criu/pie/compat/parasite-vdso-compat.c

+../parasite-vdso.c
\ No newline at end of file

criu/pie/compat/util-compat.c

+../util.c
\ No newline at end of file

criu/pie/compat/util-fd-compat.c

+../util-fd.c
\ No newline at end of file

criu/pie/compat/util-vdso-compat.c

+../util-vdso.c
\ No newline at end of file