selftests/riscv: fix compiler output flag spacing in all Makefiles

Standardize the compiler output flag format across all RISC-V
selftests by adding a space between '-o' and '$@'.

Although '-o$@' is perfectly valid for GCC/Clang to parse,
changing it to '-o $@' with a space aligns with the GNU
official documentation conventions, improves readability by
visually separating the flag from the target variable, and
ensures consistency with other architectures.

Currently, RISC-V selftests use '-o$@' (without space) in 13
instances across 6 Makefiles, while all other architectures
consistently use '-o $@' (with space). This inconsistency makes
RISC-V an outlier in the kernel's selftest infrastructure.

Signed-off-by: Zong Li <zong.li@sifive.com>
Link: https://patch.msgid.link/20260511032917.3542802-1-zong.li@sifive.com
[pjw@kernel.org: cleaned up patch description]
Signed-off-by: Paul Walmsley <pjw@kernel.org>

diff --git a/tools/testing/selftests/riscv/abi/Makefile b/tools/testing/selftests/riscv/abi/Makefile
index ed82ff9c664e7eb3f760cbab81fb957ff72579c5..041114675ad5c7a992a8d1386a754582970b1a3c 100644 (file)
--- a/tools/testing/selftests/riscv/abi/Makefile
+++ b/tools/testing/selftests/riscv/abi/Makefile
@@ -7,4 +7,4 @@ TEST_GEN_PROGS := pointer_masking
 include ../../lib.mk
 
 $(OUTPUT)/pointer_masking: pointer_masking.c
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^

diff --git a/tools/testing/selftests/riscv/cfi/Makefile b/tools/testing/selftests/riscv/cfi/Makefile
index 93b4738c0e2e8db523baace4cd88af02d8c71ac0..418b4b5325a5ccfa585fb0edc83857ebb5eb4eb2 100644 (file)
--- a/tools/testing/selftests/riscv/cfi/Makefile
+++ b/tools/testing/selftests/riscv/cfi/Makefile
@@ -16,7 +16,7 @@ ifeq ($(shell $(CC) $(CFLAGS) -nostdlib -xc /dev/null -o /dev/null > /dev/null 2
 TEST_GEN_PROGS := cfitests
 
 $(OUTPUT)/cfitests: cfitests.c shadowstack.c
-       $(CC) -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^
 else
 
 $(shell echo "Toolchain doesn't support CFI, skipping CFI kselftest." >&2)

diff --git a/tools/testing/selftests/riscv/hwprobe/Makefile b/tools/testing/selftests/riscv/hwprobe/Makefile
index cec81610a5f27bd31086024565ade68e2b9a570a..71e3f26c541bfddf1d25ce3a5a6ce30415c22bbc 100644 (file)
--- a/tools/testing/selftests/riscv/hwprobe/Makefile
+++ b/tools/testing/selftests/riscv/hwprobe/Makefile
@@ -9,10 +9,10 @@ TEST_GEN_PROGS := hwprobe cbo which-cpus
 include ../../lib.mk
 
 $(OUTPUT)/hwprobe: hwprobe.c sys_hwprobe.S
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^
 
 $(OUTPUT)/cbo: cbo.c sys_hwprobe.S
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^
 
 $(OUTPUT)/which-cpus: which-cpus.c sys_hwprobe.S
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^

diff --git a/tools/testing/selftests/riscv/mm/Makefile b/tools/testing/selftests/riscv/mm/Makefile
index 4664ed79e20b5ba03698755e68bf5fc91873cd25..24122453e3d024005720f5108c6407059e2f4e00 100644 (file)
--- a/tools/testing/selftests/riscv/mm/Makefile
+++ b/tools/testing/selftests/riscv/mm/Makefile
@@ -12,4 +12,4 @@ TEST_PROGS := run_mmap.sh
 include ../../lib.mk
 
 $(OUTPUT)/mm: mmap_default.c mmap_bottomup.c mmap_tests.h
-       $(CC) -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $^

diff --git a/tools/testing/selftests/riscv/sigreturn/Makefile b/tools/testing/selftests/riscv/sigreturn/Makefile
index eb8bac9279a83d69984a374a6df9166cc24a7091..8c77508641f3afc6039fb88a5b3042eeb16072db 100644 (file)
--- a/tools/testing/selftests/riscv/sigreturn/Makefile
+++ b/tools/testing/selftests/riscv/sigreturn/Makefile
@@ -9,4 +9,4 @@ TEST_GEN_PROGS := sigreturn
 include ../../lib.mk
 
 $(OUTPUT)/sigreturn: sigreturn.c
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^

diff --git a/tools/testing/selftests/riscv/vector/Makefile b/tools/testing/selftests/riscv/vector/Makefile
index 326dafd739bf5b2c1a91bc9c4249d88d9b3260c5..7e0017b3fb8b8c17accb23829c40fa63167e8e1c 100644 (file)
--- a/tools/testing/selftests/riscv/vector/Makefile
+++ b/tools/testing/selftests/riscv/vector/Makefile
@@ -11,29 +11,29 @@ include ../../lib.mk
 TEST_GEN_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(TEST_GEN_LIBS))
 
 $(OUTPUT)/sys_hwprobe.o: ../hwprobe/sys_hwprobe.S
-       $(CC) -static -c -o$@ $(CFLAGS) $^
+       $(CC) -static -c -o $@ $(CFLAGS) $^
 
 $(OUTPUT)/v_helpers.o: v_helpers.c
-       $(CC) -static -c -o$@ $(CFLAGS) $^
+       $(CC) -static -c -o $@ $(CFLAGS) $^
 
 $(OUTPUT)/vstate_prctl: vstate_prctl.c $(OUTPUT)/sys_hwprobe.o $(OUTPUT)/v_helpers.o
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^
 
 $(OUTPUT)/vstate_exec_nolibc: vstate_exec_nolibc.c
        $(CC) -nostdlib -static -include ../../../../include/nolibc/nolibc.h \
                -Wall $(CFLAGS) $(LDFLAGS) $^ -o $@ -lgcc
 
 $(OUTPUT)/v_initval: v_initval.c $(OUTPUT)/sys_hwprobe.o $(OUTPUT)/v_helpers.o
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^
 
 $(OUTPUT)/v_exec_initval_nolibc: v_exec_initval_nolibc.c
        $(CC) -nostdlib -static -include ../../../../include/nolibc/nolibc.h \
                -Wall $(CFLAGS) $(LDFLAGS) $^ -o $@ -lgcc
 
 $(OUTPUT)/vstate_ptrace: vstate_ptrace.c $(OUTPUT)/sys_hwprobe.o $(OUTPUT)/v_helpers.o
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^
 
 $(OUTPUT)/validate_v_ptrace: validate_v_ptrace.c $(OUTPUT)/sys_hwprobe.o $(OUTPUT)/v_helpers.o
-       $(CC) -static -o$@ $(CFLAGS) $(LDFLAGS) $^
+       $(CC) -static -o $@ $(CFLAGS) $(LDFLAGS) $^
 
 EXTRA_CLEAN += $(TEST_GEN_OBJ)