One can only use `make all` or `make <test_name>_<bitness>` as make targets. `make <test_name>` doesn't work as Ingo noticed: x86> make test_vsyscall gcc -O2 -g -std=gnu99 -pthread -Wall -no-pie test_vsyscall.c -o test_vsyscall /tmp/aBaoo3nb.o: In function `init_vdso': test_vsyscall.c:68: undefined reference to `dlopen' test_vsyscall.c:76: undefined reference to `dlsym' test_vsyscall.c:80: undefined reference to `dlsym' test_vsyscall.c:84: undefined reference to `dlsym' test_vsyscall.c:88: undefined reference to `dlsym' test_vsyscall.c:70: undefined reference to `dlopen' collect2: error: ld returned 1 exit status <builtin>: recipe for target 'test_vsyscall' failed make: *** [test_vsyscall] Error 1

Makefile target substitution neither works :-/

Generate .PHONY targets per-test and fix target substitution.

Cc: Andy Lutomirski luto@kernel.org Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: Shuah Khan shuah@kernel.org Cc: Thomas Gleixner tglx@linutronix.de Cc: linux-kselftest@vger.kernel.org Cc: x86@kernel.org Reported-by: Ingo Molnar mingo@kernel.org Signed-off-by: Dmitry Safonov dima@arista.com --- v2: collide two target lines $(1) and $(1)_{64,32}

tools/testing/selftests/x86/Makefile | 12 ++++++++++++ 1 file changed, 12 insertions(+)

diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile index 5d4f10ac2af2..10ca46df1449 100644 --- a/tools/testing/selftests/x86/Makefile +++ b/tools/testing/selftests/x86/Makefile @@ -27,14 +27,26 @@ UNAME_M := $(shell uname -m) CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32) CAN_BUILD_X86_64 := $(shell ./check_cc.sh $(CC) trivial_64bit_program.c)

+define gen-target-rule-32 +$(1) $(1)_32: $(OUTPUT)/$(1)_32 +.PHONY: $(1) $(1)_32 +endef + +define gen-target-rule-64 +$(1) $(1)_64: $(OUTPUT)/$(1)_64 +.PHONY: $(1) $(1)_64 +endef + ifeq ($(CAN_BUILD_I386),1) all: all_32 TEST_PROGS += $(BINARIES_32) +$(foreach t,$(TARGETS_C_32BIT_ALL),$(eval $(call gen-target-rule-32,$(t)))) endif

ifeq ($(CAN_BUILD_X86_64),1) all: all_64 TEST_PROGS += $(BINARIES_64) +$(foreach t,$(TARGETS_C_64BIT_ALL),$(eval $(call gen-target-rule-64,$(t)))) endif

all_32: $(BINARIES_32)