selftests/powerpc: make sub-folders buildable on their own

Build breaks when executing make with run_tests for sub-folders
under powerpc. This is because, CFLAGS and GIT_VERSION macros are
defined in Makefile of toplevel powerpc folder.

  make: Entering directory '/home/maddy/linux/tools/testing/selftests/powerpc/mm'
  gcc     hugetlb_vs_thp_test.c ../harness.c ../utils.c  -o /home/maddy/selftest_output//hugetlb_vs_thp_test
  hugetlb_vs_thp_test.c:6:10: fatal error: utils.h: No such file or directory
      6 | #include "utils.h"
        |          ^~~~~~~~~
  compilation terminated.

Fix this by adding the flags.mk in each sub-folder Makefile. Also remove
the CFLAGS and GIT_VERSION macros from powerpc/ folder Makefile since
the same is definied in flags.mk
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240229093711.581230-3-maddy@linux.ibm.com

tools/testing/selftests/powerpc/Makefile

@@ -7,12 +7,6 @@ ARCH := $(shell echo $(ARCH) | sed -e s/ppc.*/powerpc/)
 
 ifeq ($(ARCH),powerpc)
 
-GIT_VERSION = $(shell git describe --always --long --dirty || echo "unknown")
-
-CFLAGS := -std=gnu99 -O2 -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CURDIR)/include $(CFLAGS)
-
-export CFLAGS
-
 SUB_DIRS = alignment		\
 	   benchmarks		\
 	   cache_shape		\
@@ -46,6 +40,7 @@ $(SUB_DIRS):
 	BUILD_TARGET=$(OUTPUT)/$@; mkdir -p $$BUILD_TARGET; $(MAKE) OUTPUT=$$BUILD_TARGET -k -C $@ all
 
 include ../lib.mk
+include ./flags.mk
 
 override define RUN_TESTS
 	+@for TARGET in $(SUB_DIRS); do \

tools/testing/selftests/powerpc/alignment/Makefile

@@ -3,5 +3,6 @@ TEST_GEN_PROGS := copy_first_unaligned alignment_handler
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 $(TEST_GEN_PROGS): ../harness.c ../utils.c

tools/testing/selftests/powerpc/benchmarks/Makefile

@@ -6,6 +6,7 @@ TEST_FILES := settings
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 CFLAGS += -O2
 

tools/testing/selftests/powerpc/cache_shape/Makefile

@@ -3,5 +3,6 @@ TEST_GEN_PROGS := cache_shape
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 $(TEST_GEN_PROGS): ../harness.c ../utils.c

tools/testing/selftests/powerpc/copyloops/Makefile

@@ -10,6 +10,7 @@ EXTRA_SOURCES := validate.c ../harness.c stubs.S
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 # The loops are all 64-bit code
 CFLAGS += -m64

tools/testing/selftests/powerpc/dexcr/Makefile

@@ -2,6 +2,7 @@ TEST_GEN_PROGS := hashchk_test
 TEST_GEN_FILES := lsdexcr
 
 include ../../lib.mk
+include ../flags.mk
 
 $(OUTPUT)/hashchk_test: CFLAGS += -fno-pie $(call cc-option,-mno-rop-protect)
 

tools/testing/selftests/powerpc/dscr/Makefile

@@ -5,6 +5,7 @@ TEST_GEN_PROGS := dscr_default_test dscr_explicit_test dscr_user_test	\
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 $(OUTPUT)/dscr_default_test: LDLIBS += -lpthread
 $(OUTPUT)/dscr_explicit_test: LDLIBS += -lpthread

tools/testing/selftests/powerpc/eeh/Makefile

@@ -7,3 +7,4 @@ TEST_FILES := eeh-functions.sh settings
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk

tools/testing/selftests/powerpc/math/Makefile

@@ -3,6 +3,7 @@ TEST_GEN_PROGS := fpu_syscall fpu_preempt fpu_signal fpu_denormal vmx_syscall vm
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 $(TEST_GEN_PROGS): ../harness.c
 $(TEST_GEN_PROGS): CFLAGS += -O2 -g -pthread -m64 -maltivec

tools/testing/selftests/powerpc/mce/Makefile

@@ -3,5 +3,6 @@
 TEST_GEN_PROGS := inject-ra-err
 
 include ../../lib.mk
+include ../flags.mk
 
 $(TEST_GEN_PROGS): ../harness.c

tools/testing/selftests/powerpc/mm/Makefile

@@ -13,6 +13,7 @@ TEST_GEN_FILES := tempfile
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 $(TEST_GEN_PROGS): ../harness.c ../utils.c
 

tools/testing/selftests/powerpc/nx-gzip/Makefile

@@ -2,6 +2,7 @@ TEST_GEN_FILES := gzfht_test gunz_test
 TEST_PROGS := nx-gzip-test.sh
 
 include ../../lib.mk
+include ../flags.mk
 
 CFLAGS = -O3 -m64 -I./include -I../include
 

tools/testing/selftests/powerpc/papr_attributes/Makefile

@@ -3,5 +3,6 @@ TEST_GEN_PROGS := attr_test
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
-$(TEST_GEN_PROGS): ../harness.c ../utils.c
\ No newline at end of file
+$(TEST_GEN_PROGS): ../harness.c ../utils.c

tools/testing/selftests/powerpc/papr_sysparm/Makefile

@@ -6,6 +6,7 @@ TEST_GEN_PROGS := papr_sysparm
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 $(TEST_GEN_PROGS): ../harness.c ../utils.c
 

tools/testing/selftests/powerpc/papr_vpd/Makefile

@@ -6,6 +6,7 @@ TEST_GEN_PROGS := papr_vpd
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 $(TEST_GEN_PROGS): ../harness.c ../utils.c
 

tools/testing/selftests/powerpc/primitives/Makefile

@@ -3,6 +3,7 @@ TEST_GEN_PROGS := load_unaligned_zeropad
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 CFLAGS += -I$(CURDIR)
 

tools/testing/selftests/powerpc/ptrace/Makefile

@@ -26,6 +26,7 @@ LOCAL_HDRS += $(patsubst %,$(selfdir)/powerpc/ptrace/%,$(wildcard *.h))
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 TM_TESTS := $(patsubst %,$(OUTPUT)/%,$(TM_TESTS))
 TESTS_64 := $(patsubst %,$(OUTPUT)/%,$(TESTS_64))

tools/testing/selftests/powerpc/security/Makefile

@@ -6,6 +6,7 @@ TEST_PROGS := mitigation-patching.sh
 top_srcdir = ../../../../..
 
 include ../../lib.mk
+include ../flags.mk
 
 CFLAGS += $(KHDR_INCLUDES)
 

tools/testing/selftests/powerpc/signal/Makefile

@@ -10,6 +10,7 @@ TEST_FILES := settings
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 CFLAGS += -maltivec
 

tools/testing/selftests/powerpc/stringloops/Makefile

@@ -26,6 +26,7 @@ endif
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 # The loops are all 64-bit code
 CFLAGS += -I$(CURDIR)

tools/testing/selftests/powerpc/switch_endian/Makefile

@@ -5,6 +5,7 @@ EXTRA_CLEAN = $(OUTPUT)/*.o $(OUTPUT)/check-reversed.S
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 ASFLAGS += -O2 -Wall -g -nostdlib -m64
 

tools/testing/selftests/powerpc/syscalls/Makefile

@@ -3,6 +3,7 @@ TEST_GEN_PROGS := ipc_unmuxed rtas_filter
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 CFLAGS += $(KHDR_INCLUDES)
 

tools/testing/selftests/powerpc/tm/Makefile

@@ -11,6 +11,7 @@ TEST_FILES := settings
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 $(TEST_GEN_PROGS): ../harness.c ../utils.c
 

tools/testing/selftests/powerpc/vphn/Makefile

@@ -3,6 +3,7 @@ TEST_GEN_PROGS := test-vphn
 
 top_srcdir = ../../../../..
 include ../../lib.mk
+include ../flags.mk
 
 CFLAGS += -m64 -I$(CURDIR)