Use $(wildcard ...) to find the library source files instead of manually
defining the inputs, which is a maintenance burden and error prone.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 tools/testing/selftests/kvm/Makefile | 45 ++++------------------------
 1 file changed, 5 insertions(+), 40 deletions(-)

diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index 9cff99a1cb2e..a9930e9197da 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -19,44 +19,6 @@ else
 $(error Unknown architecture '$(ARCH)')
 endif
 
-LIBKVM += lib/assert.c
-LIBKVM += lib/elf.c
-LIBKVM += lib/guest_modes.c
-LIBKVM += lib/io.c
-LIBKVM += lib/kvm_util.c
-LIBKVM += lib/memstress.c
-LIBKVM += lib/rbtree.c
-LIBKVM += lib/sparsebit.c
-LIBKVM += lib/test_util.c
-LIBKVM += lib/ucall_common.c
-LIBKVM += lib/userfaultfd_util.c
-
-LIBKVM_STRING += lib/string_override.c
-
-LIBKVM_x86_64 += lib/x86_64/apic.c
-LIBKVM_x86_64 += lib/x86_64/handlers.S
-LIBKVM_x86_64 += lib/x86_64/hyperv.c
-LIBKVM_x86_64 += lib/x86_64/memstress.c
-LIBKVM_x86_64 += lib/x86_64/processor.c
-LIBKVM_x86_64 += lib/x86_64/svm.c
-LIBKVM_x86_64 += lib/x86_64/ucall.c
-LIBKVM_x86_64 += lib/x86_64/vmx.c
-
-LIBKVM_aarch64 += lib/aarch64/gic.c
-LIBKVM_aarch64 += lib/aarch64/gic_v3.c
-LIBKVM_aarch64 += lib/aarch64/handlers.S
-LIBKVM_aarch64 += lib/aarch64/processor.c
-LIBKVM_aarch64 += lib/aarch64/spinlock.c
-LIBKVM_aarch64 += lib/aarch64/ucall.c
-LIBKVM_aarch64 += lib/aarch64/vgic.c
-
-LIBKVM_s390x += lib/s390x/diag318_test_handler.c
-LIBKVM_s390x += lib/s390x/processor.c
-LIBKVM_s390x += lib/s390x/ucall.c
-
-LIBKVM_riscv += lib/riscv/processor.c
-LIBKVM_riscv += lib/riscv/ucall.c
-
 # Non-compiled test targets
 TEST_PROGS_x86_64 += x86_64/nx_huge_pages_test.sh
 
@@ -213,10 +175,13 @@ pgste-option = $(call try-run, echo 'int main(void) { return 0; }' | \
 LDLIBS += -ldl
 LDFLAGS += -pthread $(no-pie-option) $(pgste-option)
 
-LIBKVM_C := $(filter %.c,$(LIBKVM))
-LIBKVM_S := $(filter %.S,$(LIBKVM))
+LIBKVM_C := $(filter-out lib/string_override.c,$(wildcard lib/*.c))
+LIBKVM_C += $(wildcard lib/$(ARCH_DIR)/*.c)
+LIBKVM_S := $(wildcard lib/*.S)
+LIBKVM_S += $(wildcard lib/$(ARCH_DIR)/*.S)
 LIBKVM_C_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM_C))
 LIBKVM_S_OBJ := $(patsubst %.S, $(OUTPUT)/%.o, $(LIBKVM_S))
+LIBKVM_STRING := lib/string_override.c
 LIBKVM_STRING_OBJ := $(patsubst %.c, $(OUTPUT)/%.o, $(LIBKVM_STRING))
 LIBKVM_OBJS = $(LIBKVM_C_OBJ) $(LIBKVM_S_OBJ) $(LIBKVM_STRING_OBJ)
 
-- 
2.39.0.rc1.256.g54fd8350bd-goog

On 12/13/22 01:16, Sean Christopherson wrote:
> Use $(wildcard ...) to find the library source files instead of manually
> defining the inputs, which is a maintenance burden and error prone.

No, please don't.  This leads to weird errors, for example when "git 
checkout" is interrupted with ^C.   I have applied patches 1-11.

Paolo

On Sat, Dec 24, 2022, Paolo Bonzini wrote:
> On 12/13/22 01:16, Sean Christopherson wrote:
> > Use $(wildcard ...) to find the library source files instead of manually
> > defining the inputs, which is a maintenance burden and error prone.
> 
> No, please don't.  This leads to weird errors, for example when "git
> checkout" is interrupted with ^C.

Well, don't do that ;-)

Are there concerns beyond having an incomplete and/or modified git working tree?
E.g. could we do something crazy like fail the build by default if the working
tree isn't pristine?  The library files aren't terrible, but the number of tests
is getting unwieldy, to say the least.