This ensures that both 32-bit and 64-bit binaries are generated when this is built on a x86_64 system. Most of the changes have been borrowed from tools/testing/selftests/x86/Makefile. Signed-off-by: Sandipan Das <sandipan@xxxxxxxxxxxxx> --- tools/testing/selftests/vm/Makefile | 49 +++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile index 4e9c741be6af..7fa0adf11f6a 100644 --- a/tools/testing/selftests/vm/Makefile +++ b/tools/testing/selftests/vm/Makefile @@ -18,7 +18,56 @@ TEST_GEN_FILES += on-fault-limit TEST_GEN_FILES += thuge-gen TEST_GEN_FILES += transhuge-stress TEST_GEN_FILES += userfaultfd + +ifeq ($(ARCH), x86_64) +CAN_BUILD_I386 := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_32bit_program.c -m32) +CAN_BUILD_X86_64 := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_64bit_program.c) +CAN_BUILD_WITH_NOPIE := $(shell ./../x86/check_cc.sh $(CC) ../x86/trivial_program.c -no-pie) + +TARGETS := protection_keys +BINARIES_32 := $(TARGETS:%=%_32) +BINARIES_64 := $(TARGETS:%=%_64) + +.PHONY: $(TARGETS) + +ifeq ($(CAN_BUILD_WITH_NOPIE),1) +CFLAGS += -no-pie +endif + +ifeq ($(CAN_BUILD_I386),1) +TEST_GEN_FILES += $(BINARIES_32) +$(TARGETS): $(BINARIES_32) +$(BINARIES_32): %_32: %.c + $(CC) -m32 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl -lm +endif + +ifeq ($(CAN_BUILD_X86_64),1) +TEST_GEN_FILES += $(BINARIES_64) +$(TARGETS): $(BINARIES_64) +$(BINARIES_64): %_64: %.c + $(CC) -m64 -o $@ $(CFLAGS) $(EXTRA_CFLAGS) $^ -lrt -ldl +endif + +# x86_64 users should be encouraged to install 32-bit libraries +ifeq ($(CAN_BUILD_I386)$(CAN_BUILD_X86_64),01) +$(TARGETS): warn_32bit_failure + +warn_32bit_failure: + @echo "Warning: you seem to have a broken 32-bit build" 2>&1; \ + echo "environment. This will reduce test coverage of 64-bit" 2>&1; \ + echo "kernels. If you are using a Debian-like distribution," 2>&1; \ + echo "try:"; 2>&1; \ + echo ""; \ + echo " apt-get install gcc-multilib libc6-i386 libc6-dev-i386"; \ + echo ""; \ + echo "If you are using a Fedora-like distribution, try:"; \ + echo ""; \ + echo " yum install glibc-devel.*i686"; \ + exit 0; +endif +else TEST_GEN_FILES += protection_keys +endif ifneq (,$(filter $(ARCH),arm64 ia64 mips64 parisc64 ppc64 riscv64 s390x sh64 sparc64 x86_64)) TEST_GEN_FILES += va_128TBswitch -- 2.17.1
