--- Libc/Libc-1725.40.4/tests/Makefile
+++ Libc/Libc-1272.200.26/tests/Makefile
@@ -1,7 +1,5 @@
 PROJECT := Libc
 TEST_DIR := tests/
-
-CUSTOM_TARGETS += locales osvariantutil subsystem_test_helper thread_stack_pcs_helper
 
 ifeq ($(DEVELOPER_DIR),)
     DEVELOPER_DIR := $(shell xcode-select -p)
@@ -9,38 +7,20 @@
 
 include $(DEVELOPER_DIR)/AppleInternal/Makefiles/darwintest/Makefile.common
 
-ifneq ($(PLATFORM),MacOSX)
+ifeq ($(PLATFORM),BridgeOS)
 EXCLUDED_SOURCES += locale.c
-EXCLUDED_SOURCES += os_boot_mode.c
-else
-# All of FreeBSD's libc tests are going to be ATF tests, and ATF isn't currently
-# available outside of macOS.  We'll exclude them from the build and also not
-# include them in the testing .plist until we have some non-ATF test to add to
-# it.
-BATS_PLISTS += $(SRCROOT)/FreeBSD/freebsd.plist
 endif
-BATS_PLISTS += $(SRCROOT)/regex/regex.plist
 
-FRAMEWORK_CFLAGS := $(patsubst %,-iframework %,$(SYSTEM_FRAMEWORK_SEARCH_PATHS))
 WARNING_CFLAGS := -Weverything \
 	-Wno-vla -Wno-missing-field-initializers -Wno-padded \
 	-Wno-gnu-flexible-array-initializer -Wno-gnu-empty-initializer \
 	-Wno-partial-availability -Wno-used-but-marked-unused \
 	-Wno-reserved-id-macro -fmacro-backtrace-limit=0 \
-	-Wno-c++98-compat -Wno-extra-semi -Wno-language-extension-token
-OTHER_CFLAGS := -DDARWINTEST --std=gnu11 $(FRAMEWORK_CFLAGS) $(WARNING_CFLAGS) -I$(SDK_SYSTEM_FRAMEWORK_HEADERS) -L/usr/lib/system -lsystem_collections
-DT_LDFLAGS += -ldarwintest_utils
-ASAN_DYLIB_PATH := /usr/appleinternal/lib/sanitizers/
+	-Wno-c++98-compat
+OTHER_CFLAGS := -DDARWINTEST --std=gnu11 $(WARNING_CFLAGS)
+OTHER_LDFLAGS := -ldarwintest_utils
+ASAN_DYLIB_PATH := /usr/local/lib/sanitizers/
 
-OTHER_LDFLAGS := -umbrella System -L/usr/lib/system -lsystem_collections
-
-fbounds_safety_assumes: OTHER_CFLAGS += -fbounds-safety -fbounds-safety-bringup-missing-checks
-fbounds_safety_includes: OTHER_CFLAGS += -fbounds-safety -fbounds-safety-bringup-missing-checks -D__LIBC_STAGED_BOUNDS_SAFETY_ATTRIBUTES
-abort_tests: OTHER_CFLAGS += -fstack-check
-execvp: OTHER_CFLAGS += -Wno-pre-c11-compat
-strtod: OTHER_CFLAGS += -Wno-float-equal -Wno-ignored-pragmas
-strtof: OTHER_CFLAGS += -Wno-float-equal -Wno-ignored-pragmas
-strtold: OTHER_CFLAGS += -Wno-float-equal -Wno-ignored-pragmas
 nxheap: OTHER_CFLAGS += -Wno-cast-align
 strlcat: OTHER_CFLAGS += -Wno-pointer-arith
 psort: OTHER_CFLAGS += -Wno-cast-qual -Wno-sign-conversion
@@ -55,54 +35,6 @@
 else
 EXCLUDED_SOURCES += qsort_perf.c
 endif
-os_variant: OTHER_CFLAGS += -DOS_CRASH_ENABLE_EXPERIMENTAL_LIBTRACE
-
-osvariantutil: OTHER_CFLAGS += -Wno-gnu-statement-expression -Wno-covered-switch-default -DOS_CRASH_ENABLE_EXPERIMENTAL_LIBTRACE
-
-ifeq ($(PLATFORM),MacOSX)
-include $(SRCROOT)/FreeBSD/gen/Makefile.targets
-include $(SRCROOT)/FreeBSD/string/Makefile.targets
-endif
-include $(SRCROOT)/regex/Makefile.targets
 
 include $(DEVELOPER_DIR)/AppleInternal/Makefiles/darwintest/Makefile.targets
 
-ifeq ($(PLATFORM),MacOSX)
-include $(SRCROOT)/FreeBSD/gen/Makefile
-include $(SRCROOT)/FreeBSD/string/Makefile
-endif
-include $(SRCROOT)/regex/Makefile
-
-OSVARIANTUTIL_INSTALLDIR = $(DSTROOT)/usr/local/bin
-
-install-osvariantutil: osvariantutil
-	mkdir -p $(OSVARIANTUTIL_INSTALLDIR)
-	cp $(SYMROOT)/osvariantutil $(OSVARIANTUTIL_INSTALLDIR)/
-ifeq ($(DWARF_DSYM_FILE_SHOULD_ACCOMPANY_PRODUCT),YES)
-	cp -R $(SYMROOT)/osvariantutil.dSYM $(OSVARIANTUTIL_INSTALLDIR)/
-endif
-
-subsystem_test: subsystem_test.c subsystem_test-entitlements.plist
-subsystem_test: CODE_SIGN_ENTITLEMENTS=subsystem_test-entitlements.plist
-
-install-subsystem_test_helper: subsystem_test_helper
-	mkdir -p $(INSTALLDIR)
-	cp $(SYMROOT)/subsystem_test_helper $(INSTALLDIR)/
-ifeq ($(DWARF_DSYM_FILE_SHOULD_ACCOMPANY_PRODUCT),YES)
-	cp -R $(SYMROOT)/subsystem_test_helper.dSYM $(INSTALLDIR)/
-endif
-
-thread_stack_pcs: CODE_SIGN_ENTITLEMENTS=get_task_allow_entitlement.plist
-
-thread_stack_pcs_helper: OTHER_LDFLAGS += -dynamiclib
-
-install-thread_stack_pcs_helper: thread_stack_pcs_helper
-	mkdir -p $(INSTALLDIR)
-	cp $(SYMROOT)/thread_stack_pcs_helper $(INSTALLDIR)/
-ifeq ($(DWARF_DSYM_FILE_SHOULD_ACCOMPANY_PRODUCT),YES)
-	cp -R $(SYMROOT)/thread_stack_pcs_helper.dSYM $(INSTALLDIR)/
-endif
-
-install-locales:
-	mkdir -p $(INSTALLDIR)
-	cp -R $(SRCROOT)/locales $(INSTALLDIR)/