Adding upstream version 5.10.209.upstream/5.10.209

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

70 files changed, 1488 insertions, 0 deletions

diff --git a/tools/build/feature/.gitignore b/tools/build/feature/.gitignore
new file mode 100644
index 000000000..15fcd34ac
--- /dev/null
+++ b/tools/build/feature/.gitignore
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+*.d
+*.bin
+*.output
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
new file mode 100644
index 000000000..221250973
--- /dev/null
+++ b/tools/build/feature/Makefile
@@ -0,0 +1,346 @@
+# SPDX-License-Identifier: GPL-2.0
+FILES=                                          \
+         test-all.bin                           \
+         test-backtrace.bin                     \
+         test-bionic.bin                        \
+         test-dwarf.bin                         \
+         test-dwarf_getlocations.bin            \
+         test-eventfd.bin                       \
+         test-fortify-source.bin                \
+         test-sync-compare-and-swap.bin         \
+         test-get_current_dir_name.bin          \
+         test-glibc.bin                         \
+         test-gtk2.bin                          \
+         test-gtk2-infobar.bin                  \
+         test-hello.bin                         \
+         test-libaudit.bin                      \
+         test-libbfd.bin                        \
+         test-libbfd-buildid.bin		\
+         test-disassembler-four-args.bin        \
+         test-reallocarray.bin			\
+         test-libbfd-liberty.bin                \
+         test-libbfd-liberty-z.bin              \
+         test-cplus-demangle.bin                \
+         test-libcap.bin			\
+         test-libelf.bin                        \
+         test-libelf-getphdrnum.bin             \
+         test-libelf-gelf_getnote.bin           \
+         test-libelf-getshdrstrndx.bin          \
+         test-libdebuginfod.bin                 \
+         test-libnuma.bin                       \
+         test-numa_num_possible_cpus.bin        \
+         test-libperl.bin                       \
+         test-libpython.bin                     \
+         test-libslang.bin                      \
+         test-libslang-include-subdir.bin       \
+         test-libcrypto.bin                     \
+         test-libunwind.bin                     \
+         test-libunwind-debug-frame.bin         \
+         test-libunwind-x86.bin                 \
+         test-libunwind-x86_64.bin              \
+         test-libunwind-arm.bin                 \
+         test-libunwind-aarch64.bin             \
+         test-libunwind-debug-frame-arm.bin     \
+         test-libunwind-debug-frame-aarch64.bin \
+         test-pthread-attr-setaffinity-np.bin   \
+         test-pthread-barrier.bin		\
+         test-stackprotector-all.bin            \
+         test-timerfd.bin                       \
+         test-libdw-dwarf-unwind.bin            \
+         test-libbabeltrace.bin                 \
+         test-compile-32.bin                    \
+         test-compile-x32.bin                   \
+         test-zlib.bin                          \
+         test-lzma.bin                          \
+         test-bpf.bin                           \
+         test-libbpf.bin                        \
+         test-get_cpuid.bin                     \
+         test-sdt.bin                           \
+         test-cxx.bin                           \
+         test-gettid.bin			\
+         test-jvmti.bin				\
+         test-jvmti-cmlr.bin			\
+         test-sched_getcpu.bin			\
+         test-setns.bin				\
+         test-libopencsd.bin			\
+         test-clang.bin				\
+         test-llvm.bin				\
+         test-llvm-version.bin			\
+         test-libaio.bin			\
+         test-libzstd.bin			\
+         test-clang-bpf-co-re.bin		\
+         test-file-handle.bin			\
+         test-libpfm4.bin
+
+FILES := $(addprefix $(OUTPUT),$(FILES))
+
+PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
+LLVM_CONFIG ?= llvm-config
+CLANG ?= clang
+
+all: $(FILES)
+
+__BUILD = $(CC) $(CFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.c,$(@F)) $(LDFLAGS)
+  BUILD = $(__BUILD) > $(@:.bin=.make.output) 2>&1
+
+__BUILDXX = $(CXX) $(CXXFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(@F)) $(LDFLAGS)
+  BUILDXX = $(__BUILDXX) > $(@:.bin=.make.output) 2>&1
+
+###############################
+
+$(OUTPUT)test-all.bin:
+	$(BUILD) -fstack-protector-all -O2 -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -I/usr/include/slang -lslang $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz -llzma -lzstd -lcap
+
+$(OUTPUT)test-hello.bin:
+	$(BUILD)
+
+$(OUTPUT)test-pthread-attr-setaffinity-np.bin:
+	$(BUILD) -D_GNU_SOURCE -lpthread
+
+$(OUTPUT)test-pthread-barrier.bin:
+	$(BUILD) -lpthread
+
+$(OUTPUT)test-stackprotector-all.bin:
+	$(BUILD) -fstack-protector-all
+
+$(OUTPUT)test-fortify-source.bin:
+	$(BUILD) -O2 -D_FORTIFY_SOURCE=2
+
+$(OUTPUT)test-bionic.bin:
+	$(BUILD)
+
+$(OUTPUT)test-libcap.bin:
+	$(BUILD) -lcap
+
+$(OUTPUT)test-libelf.bin:
+	$(BUILD) -lelf
+
+$(OUTPUT)test-eventfd.bin:
+	$(BUILD)
+
+$(OUTPUT)test-get_current_dir_name.bin:
+	$(BUILD)
+
+$(OUTPUT)test-glibc.bin:
+	$(BUILD)
+
+$(OUTPUT)test-sched_getcpu.bin:
+	$(BUILD)
+
+$(OUTPUT)test-setns.bin:
+	$(BUILD)
+
+$(OUTPUT)test-libopencsd.bin:
+	$(BUILD) # -lopencsd_c_api -lopencsd provided by
+		 # $(FEATURE_CHECK_LDFLAGS-libopencsd)
+
+DWARFLIBS := -ldw
+ifeq ($(findstring -static,${LDFLAGS}),-static)
+DWARFLIBS += -lelf -lebl -lz -llzma -lbz2
+endif
+
+$(OUTPUT)test-dwarf.bin:
+	$(BUILD) $(DWARFLIBS)
+
+$(OUTPUT)test-dwarf_getlocations.bin:
+	$(BUILD) $(DWARFLIBS)
+
+$(OUTPUT)test-libelf-getphdrnum.bin:
+	$(BUILD) -lelf
+
+$(OUTPUT)test-libelf-gelf_getnote.bin:
+	$(BUILD) -lelf
+
+$(OUTPUT)test-libelf-getshdrstrndx.bin:
+	$(BUILD) -lelf
+
+$(OUTPUT)test-libdebuginfod.bin:
+	$(BUILD) -ldebuginfod
+
+$(OUTPUT)test-libnuma.bin:
+	$(BUILD) -lnuma
+
+$(OUTPUT)test-numa_num_possible_cpus.bin:
+	$(BUILD) -lnuma
+
+$(OUTPUT)test-libunwind.bin:
+	$(BUILD) -lelf
+
+$(OUTPUT)test-libunwind-debug-frame.bin:
+	$(BUILD) -lelf
+$(OUTPUT)test-libunwind-x86.bin:
+	$(BUILD) -lelf -lunwind-x86
+
+$(OUTPUT)test-libunwind-x86_64.bin:
+	$(BUILD) -lelf -lunwind-x86_64
+
+$(OUTPUT)test-libunwind-arm.bin:
+	$(BUILD) -lelf -lunwind-arm
+
+$(OUTPUT)test-libunwind-aarch64.bin:
+	$(BUILD) -lelf -lunwind-aarch64
+
+$(OUTPUT)test-libunwind-debug-frame-arm.bin:
+	$(BUILD) -lelf -lunwind-arm
+
+$(OUTPUT)test-libunwind-debug-frame-aarch64.bin:
+	$(BUILD) -lelf -lunwind-aarch64
+
+$(OUTPUT)test-libaudit.bin:
+	$(BUILD) -laudit
+
+$(OUTPUT)test-libslang.bin:
+	$(BUILD) -lslang
+
+$(OUTPUT)test-libslang-include-subdir.bin:
+	$(BUILD) -lslang
+
+$(OUTPUT)test-libcrypto.bin:
+	$(BUILD) -lcrypto
+
+$(OUTPUT)test-gtk2.bin:
+	$(BUILD) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null) -Wno-deprecated-declarations
+
+$(OUTPUT)test-gtk2-infobar.bin:
+	$(BUILD) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
+
+grep-libs  = $(filter -l%,$(1))
+strip-libs = $(filter-out -l%,$(1))
+
+PERL_EMBED_LDOPTS = $(shell perl -MExtUtils::Embed -e ldopts 2>/dev/null)
+PERL_EMBED_LDFLAGS = $(call strip-libs,$(PERL_EMBED_LDOPTS))
+PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
+PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
+FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
+
+ifeq ($(CC_NO_CLANG), 0)
+  PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
+  PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
+  PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
+  FLAGS_PERL_EMBED += -Wno-compound-token-split-by-macro
+endif
+
+$(OUTPUT)test-libperl.bin:
+	$(BUILD) $(FLAGS_PERL_EMBED)
+
+$(OUTPUT)test-libpython.bin:
+	$(BUILD) $(FLAGS_PYTHON_EMBED)
+
+$(OUTPUT)test-libbfd.bin:
+	$(BUILD) -DPACKAGE='"perf"' -lbfd -ldl
+
+$(OUTPUT)test-libbfd-buildid.bin:
+	$(BUILD) -DPACKAGE='"perf"' -lbfd -ldl
+
+$(OUTPUT)test-disassembler-four-args.bin:
+	$(BUILD) -DPACKAGE='"perf"' -lbfd -lopcodes
+
+$(OUTPUT)test-reallocarray.bin:
+	$(BUILD)
+
+$(OUTPUT)test-libbfd-liberty.bin:
+	$(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty
+
+$(OUTPUT)test-libbfd-liberty-z.bin:
+	$(CC) $(CFLAGS) -Wall -Werror -o $@ test-libbfd.c -DPACKAGE='"perf"' $(LDFLAGS) -lbfd -ldl -liberty -lz
+
+$(OUTPUT)test-cplus-demangle.bin:
+	$(BUILD) -liberty
+
+$(OUTPUT)test-backtrace.bin:
+	$(BUILD)
+
+$(OUTPUT)test-timerfd.bin:
+	$(BUILD)
+
+$(OUTPUT)test-libdw-dwarf-unwind.bin:
+	$(BUILD) # -ldw provided by $(FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind)
+
+$(OUTPUT)test-libbabeltrace.bin:
+	$(BUILD) # -lbabeltrace provided by $(FEATURE_CHECK_LDFLAGS-libbabeltrace)
+
+$(OUTPUT)test-sync-compare-and-swap.bin:
+	$(BUILD)
+
+$(OUTPUT)test-compile-32.bin:
+	$(CC) -m32 -o $@ test-compile.c
+
+$(OUTPUT)test-compile-x32.bin:
+	$(CC) -mx32 -o $@ test-compile.c
+
+$(OUTPUT)test-zlib.bin:
+	$(BUILD) -lz
+
+$(OUTPUT)test-lzma.bin:
+	$(BUILD) -llzma
+
+$(OUTPUT)test-get_cpuid.bin:
+	$(BUILD)
+
+$(OUTPUT)test-bpf.bin:
+	$(BUILD)
+
+$(OUTPUT)test-libbpf.bin:
+	$(BUILD) -lbpf
+
+$(OUTPUT)test-sdt.bin:
+	$(BUILD)
+
+$(OUTPUT)test-cxx.bin:
+	$(BUILDXX) -std=gnu++11
+
+$(OUTPUT)test-gettid.bin:
+	$(BUILD)
+
+$(OUTPUT)test-jvmti.bin:
+	$(BUILD)
+
+$(OUTPUT)test-jvmti-cmlr.bin:
+	$(BUILD)
+
+$(OUTPUT)test-llvm.bin:
+	$(BUILDXX) -std=gnu++11 				\
+		-I$(shell $(LLVM_CONFIG) --includedir) 		\
+		-L$(shell $(LLVM_CONFIG) --libdir)		\
+		$(shell $(LLVM_CONFIG) --libs Core BPF)		\
+		$(shell $(LLVM_CONFIG) --system-libs)		\
+		> $(@:.bin=.make.output) 2>&1
+
+$(OUTPUT)test-llvm-version.bin:
+	$(BUILDXX) -std=gnu++11 				\
+		-I$(shell $(LLVM_CONFIG) --includedir)		\
+		> $(@:.bin=.make.output) 2>&1
+
+$(OUTPUT)test-clang.bin:
+	$(BUILDXX) -std=gnu++11 				\
+		-I$(shell $(LLVM_CONFIG) --includedir) 		\
+		-L$(shell $(LLVM_CONFIG) --libdir)		\
+		-Wl,--start-group -lclangBasic -lclangDriver	\
+		  -lclangFrontend -lclangEdit -lclangLex	\
+		  -lclangAST -Wl,--end-group 			\
+		$(shell $(LLVM_CONFIG) --libs Core option)	\
+		$(shell $(LLVM_CONFIG) --system-libs)		\
+		> $(@:.bin=.make.output) 2>&1
+
+-include $(OUTPUT)*.d
+
+$(OUTPUT)test-libaio.bin:
+	$(BUILD) -lrt
+
+$(OUTPUT)test-libzstd.bin:
+	$(BUILD) -lzstd
+
+$(OUTPUT)test-clang-bpf-co-re.bin:
+	$(CLANG) -S -g -target bpf -o - $(patsubst %.bin,%.c,$(@F)) |	\
+		grep BTF_KIND_VAR
+
+$(OUTPUT)test-file-handle.bin:
+	$(BUILD)
+
+$(OUTPUT)test-libpfm4.bin:
+	$(BUILD) -lpfm
+
+###############################
+
+clean:
+	rm -f $(FILES) $(OUTPUT)*.d $(FILES:.bin=.make.output)
diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c
new file mode 100644
index 000000000..09517ff2f
--- /dev/null
+++ b/tools/build/feature/test-all.c
@@ -0,0 +1,219 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * test-all.c: Try to build all the main testcases at once.
+ *
+ * A well-configured system will have all the prereqs installed, so we can speed
+ * up auto-detection on such systems.
+ */
+
+/*
+ * Quirk: Python and Perl headers cannot be in arbitrary places, so keep
+ * these 3 testcases at the top:
+ */
+#define main main_test_libpython
+# include "test-libpython.c"
+#undef main
+
+#define main main_test_libperl
+# include "test-libperl.c"
+#undef main
+
+#define main main_test_hello
+# include "test-hello.c"
+#undef main
+
+#define main main_test_libelf
+# include "test-libelf.c"
+#undef main
+
+#define main main_test_get_current_dir_name
+# include "test-get_current_dir_name.c"
+#undef main
+
+#define main main_test_gettid
+# include "test-gettid.c"
+#undef main
+
+#define main main_test_glibc
+# include "test-glibc.c"
+#undef main
+
+#define main main_test_dwarf
+# include "test-dwarf.c"
+#undef main
+
+#define main main_test_dwarf_getlocations
+# include "test-dwarf_getlocations.c"
+#undef main
+
+#define main main_test_eventfd
+# include "test-eventfd.c"
+#undef main
+
+#define main main_test_libelf_getphdrnum
+# include "test-libelf-getphdrnum.c"
+#undef main
+
+#define main main_test_libelf_gelf_getnote
+# include "test-libelf-gelf_getnote.c"
+#undef main
+
+#define main main_test_libelf_getshdrstrndx
+# include "test-libelf-getshdrstrndx.c"
+#undef main
+
+#define main main_test_libunwind
+# include "test-libunwind.c"
+#undef main
+
+#define main main_test_libslang
+# include "test-libslang.c"
+#undef main
+
+#define main main_test_libbfd
+# include "test-libbfd.c"
+#undef main
+
+#define main main_test_libbfd_buildid
+# include "test-libbfd-buildid.c"
+#undef main
+
+#define main main_test_backtrace
+# include "test-backtrace.c"
+#undef main
+
+#define main main_test_libnuma
+# include "test-libnuma.c"
+#undef main
+
+#define main main_test_numa_num_possible_cpus
+# include "test-numa_num_possible_cpus.c"
+#undef main
+
+#define main main_test_timerfd
+# include "test-timerfd.c"
+#undef main
+
+#define main main_test_stackprotector_all
+# include "test-stackprotector-all.c"
+#undef main
+
+#define main main_test_libdw_dwarf_unwind
+# include "test-libdw-dwarf-unwind.c"
+#undef main
+
+#define main main_test_sync_compare_and_swap
+# include "test-sync-compare-and-swap.c"
+#undef main
+
+#define main main_test_zlib
+# include "test-zlib.c"
+#undef main
+
+#define main main_test_pthread_attr_setaffinity_np
+# include "test-pthread-attr-setaffinity-np.c"
+#undef main
+
+#define main main_test_pthread_barrier
+# include "test-pthread-barrier.c"
+#undef main
+
+#define main main_test_sched_getcpu
+# include "test-sched_getcpu.c"
+#undef main
+
+# if 0
+/*
+ * Disable libbabeltrace check for test-all, because the requested
+ * library version is not released yet in most distributions. Will
+ * reenable later.
+ */
+
+#define main main_test_libbabeltrace
+# include "test-libbabeltrace.c"
+#undef main
+#endif
+
+#define main main_test_lzma
+# include "test-lzma.c"
+#undef main
+
+#define main main_test_get_cpuid
+# include "test-get_cpuid.c"
+#undef main
+
+#define main main_test_bpf
+# include "test-bpf.c"
+#undef main
+
+#define main main_test_libcrypto
+# include "test-libcrypto.c"
+#undef main
+
+#define main main_test_sdt
+# include "test-sdt.c"
+#undef main
+
+#define main main_test_setns
+# include "test-setns.c"
+#undef main
+
+#define main main_test_libaio
+# include "test-libaio.c"
+#undef main
+
+#define main main_test_reallocarray
+# include "test-reallocarray.c"
+#undef main
+
+#define main main_test_disassembler_four_args
+# include "test-disassembler-four-args.c"
+#undef main
+
+#define main main_test_libzstd
+# include "test-libzstd.c"
+#undef main
+
+int main(int argc, char *argv[])
+{
+	main_test_libpython();
+	main_test_libperl();
+	main_test_hello();
+	main_test_libelf();
+	main_test_get_current_dir_name();
+	main_test_gettid();
+	main_test_glibc();
+	main_test_dwarf();
+	main_test_dwarf_getlocations();
+	main_test_eventfd();
+	main_test_libelf_getphdrnum();
+	main_test_libelf_gelf_getnote();
+	main_test_libelf_getshdrstrndx();
+	main_test_libunwind();
+	main_test_libslang();
+	main_test_libbfd();
+	main_test_libbfd_buildid();
+	main_test_backtrace();
+	main_test_libnuma();
+	main_test_numa_num_possible_cpus();
+	main_test_timerfd();
+	main_test_stackprotector_all();
+	main_test_libdw_dwarf_unwind();
+	main_test_sync_compare_and_swap(argc, argv);
+	main_test_zlib();
+	main_test_pthread_attr_setaffinity_np();
+	main_test_pthread_barrier();
+	main_test_lzma();
+	main_test_get_cpuid();
+	main_test_bpf();
+	main_test_libcrypto();
+	main_test_sched_getcpu();
+	main_test_sdt();
+	main_test_setns();
+	main_test_libaio();
+	main_test_reallocarray();
+	main_test_disassembler_four_args();
+	main_test_libzstd();
+
+	return 0;
+}
diff --git a/tools/build/feature/test-backtrace.c b/tools/build/feature/test-backtrace.c
new file mode 100644
index 000000000..e9ddd27c6
--- /dev/null
+++ b/tools/build/feature/test-backtrace.c
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <execinfo.h>
+#include <stdio.h>
+
+int main(void)
+{
+	void *backtrace_fns[10];
+	size_t entries;
+
+	entries = backtrace(backtrace_fns, 10);
+	backtrace_symbols_fd(backtrace_fns, entries, 1);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-bionic.c b/tools/build/feature/test-bionic.c
new file mode 100644
index 000000000..4bcc97765
--- /dev/null
+++ b/tools/build/feature/test-bionic.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <android/api-level.h>
+
+int main(void)
+{
+	return __ANDROID_API__;
+}
diff --git a/tools/build/feature/test-bpf.c b/tools/build/feature/test-bpf.c
new file mode 100644
index 000000000..82070eadf
--- /dev/null
+++ b/tools/build/feature/test-bpf.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <asm/unistd.h>
+#include <linux/bpf.h>
+#include <unistd.h>
+
+#ifndef __NR_bpf
+# if defined(__i386__)
+#  define __NR_bpf 357
+# elif defined(__x86_64__)
+#  define __NR_bpf 321
+# elif defined(__aarch64__)
+#  define __NR_bpf 280
+# elif defined(__sparc__)
+#  define __NR_bpf 349
+# elif defined(__s390__)
+#  define __NR_bpf 351
+# else
+#  error __NR_bpf not defined. libbpf does not support your arch.
+# endif
+#endif
+
+int main(void)
+{
+	union bpf_attr attr;
+
+	/* Check fields in attr */
+	attr.prog_type = BPF_PROG_TYPE_KPROBE;
+	attr.insn_cnt = 0;
+	attr.insns = 0;
+	attr.license = 0;
+	attr.log_buf = 0;
+	attr.log_size = 0;
+	attr.log_level = 0;
+	attr.kern_version = 0;
+	attr.prog_flags = 0;
+
+	/*
+	 * Test existence of __NR_bpf and BPF_PROG_LOAD.
+	 * This call should fail if we run the testcase.
+	 */
+	return syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
+}
diff --git a/tools/build/feature/test-clang-bpf-co-re.c b/tools/build/feature/test-clang-bpf-co-re.c
new file mode 100644
index 000000000..cb5265bfd
--- /dev/null
+++ b/tools/build/feature/test-clang-bpf-co-re.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2020 Facebook
+
+struct test {
+	int a;
+	int b;
+} __attribute__((preserve_access_index));
+
+volatile struct test global_value_for_test = {};
diff --git a/tools/build/feature/test-clang.cpp b/tools/build/feature/test-clang.cpp
new file mode 100644
index 000000000..7d87075cd
--- /dev/null
+++ b/tools/build/feature/test-clang.cpp
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "clang/Basic/Version.h"
+#if CLANG_VERSION_MAJOR < 8
+#include "clang/Basic/VirtualFileSystem.h"
+#endif
+#include "clang/Driver/Driver.h"
+#include "clang/Frontend/TextDiagnosticPrinter.h"
+#include "llvm/ADT/IntrusiveRefCntPtr.h"
+#include "llvm/Support/ManagedStatic.h"
+#if CLANG_VERSION_MAJOR >= 8
+#include "llvm/Support/VirtualFileSystem.h"
+#endif
+#include "llvm/Support/raw_ostream.h"
+
+using namespace clang;
+using namespace clang::driver;
+
+int main()
+{
+	IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
+	IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
+
+	DiagnosticsEngine Diags(DiagID, &*DiagOpts);
+	Driver TheDriver("test", "bpf-pc-linux", Diags);
+
+	llvm::llvm_shutdown();
+	return 0;
+}
diff --git a/tools/build/feature/test-compile.c b/tools/build/feature/test-compile.c
new file mode 100644
index 000000000..9821b8271
--- /dev/null
+++ b/tools/build/feature/test-compile.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+int main(void)
+{
+	printf("Hello World!\n");
+	return 0;
+}
diff --git a/tools/build/feature/test-cplus-demangle.c b/tools/build/feature/test-cplus-demangle.c
new file mode 100644
index 000000000..2ba56474a
--- /dev/null
+++ b/tools/build/feature/test-cplus-demangle.c
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+extern int printf(const char *format, ...);
+extern char *cplus_demangle(const char *, int);
+
+int main(void)
+{
+	char symbol[4096] = "FieldName__9ClassNameFd";
+	char *tmp;
+
+	tmp = cplus_demangle(symbol, 0);
+
+	printf("demangled symbol: {%s}\n", tmp);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-cxx.cpp b/tools/build/feature/test-cxx.cpp
new file mode 100644
index 000000000..396aaedd2
--- /dev/null
+++ b/tools/build/feature/test-cxx.cpp
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <iostream>
+#include <memory>
+
+static void print_str(std::string s)
+{
+	std::cout << s << std::endl;
+}
+
+int main()
+{
+	std::string s("Hello World!");
+	print_str(std::move(s));
+	std::cout << "|" << s << "|" << std::endl;
+	return 0;
+}
diff --git a/tools/build/feature/test-disassembler-four-args.c b/tools/build/feature/test-disassembler-four-args.c
new file mode 100644
index 000000000..45ce65cfd
--- /dev/null
+++ b/tools/build/feature/test-disassembler-four-args.c
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <bfd.h>
+#include <dis-asm.h>
+
+int main(void)
+{
+	bfd *abfd = bfd_openr(NULL, NULL);
+
+	disassembler(bfd_get_arch(abfd),
+		     bfd_big_endian(abfd),
+		     bfd_get_mach(abfd),
+		     abfd);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-dwarf.c b/tools/build/feature/test-dwarf.c
new file mode 100644
index 000000000..8d474bd73
--- /dev/null
+++ b/tools/build/feature/test-dwarf.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <dwarf.h>
+#include <elfutils/libdw.h>
+#include <elfutils/version.h>
+
+int main(void)
+{
+	Dwarf *dbg = dwarf_begin(0, DWARF_C_READ);
+
+	return (long)dbg;
+}
diff --git a/tools/build/feature/test-dwarf_getlocations.c b/tools/build/feature/test-dwarf_getlocations.c
new file mode 100644
index 000000000..78fb4a1fa
--- /dev/null
+++ b/tools/build/feature/test-dwarf_getlocations.c
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdlib.h>
+#include <elfutils/libdw.h>
+
+int main(void)
+{
+	Dwarf_Addr base, start, end;
+	Dwarf_Attribute attr;
+	Dwarf_Op *op;
+        size_t nops;
+	ptrdiff_t offset = 0;
+        return (int)dwarf_getlocations(&attr, offset, &base, &start, &end, &op, &nops);
+}
diff --git a/tools/build/feature/test-eventfd.c b/tools/build/feature/test-eventfd.c
new file mode 100644
index 000000000..f4de7ef00
--- /dev/null
+++ b/tools/build/feature/test-eventfd.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+
+#include <sys/eventfd.h>
+
+int main(void)
+{
+	return eventfd(0, EFD_NONBLOCK);
+}
diff --git a/tools/build/feature/test-file-handle.c b/tools/build/feature/test-file-handle.c
new file mode 100644
index 000000000..4d3b03b27
--- /dev/null
+++ b/tools/build/feature/test-file-handle.c
@@ -0,0 +1,17 @@
+#define _GNU_SOURCE
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <inttypes.h>
+
+int main(void)
+{
+	struct {
+		struct file_handle fh;
+		uint64_t cgroup_id;
+	} handle;
+	int mount_id;
+
+	name_to_handle_at(AT_FDCWD, "/", &handle.fh, &mount_id, 0);
+	return 0;
+}
diff --git a/tools/build/feature/test-fortify-source.c b/tools/build/feature/test-fortify-source.c
new file mode 100644
index 000000000..c8a57194f
--- /dev/null
+++ b/tools/build/feature/test-fortify-source.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+
+int main(void)
+{
+	return puts("hi");
+}
diff --git a/tools/build/feature/test-get_cpuid.c b/tools/build/feature/test-get_cpuid.c
new file mode 100644
index 000000000..bb4f065f2
--- /dev/null
+++ b/tools/build/feature/test-get_cpuid.c
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <cpuid.h>
+
+int main(void)
+{
+	unsigned int eax = 0, ebx = 0, ecx = 0, edx = 0;
+	return __get_cpuid(0x15, &eax, &ebx, &ecx, &edx);
+}
diff --git a/tools/build/feature/test-get_current_dir_name.c b/tools/build/feature/test-get_current_dir_name.c
new file mode 100644
index 000000000..c3c201691
--- /dev/null
+++ b/tools/build/feature/test-get_current_dir_name.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+#define _GNU_SOURCE
+#include <unistd.h>
+#include <stdlib.h>
+
+int main(void)
+{
+	free(get_current_dir_name());
+	return 0;
+}
+#undef _GNU_SOURCE
diff --git a/tools/build/feature/test-gettid.c b/tools/build/feature/test-gettid.c
new file mode 100644
index 000000000..ef24e42d3
--- /dev/null
+++ b/tools/build/feature/test-gettid.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+#define _GNU_SOURCE
+#include <unistd.h>
+
+int main(void)
+{
+	return gettid();
+}
+
+#undef _GNU_SOURCE
diff --git a/tools/build/feature/test-glibc.c b/tools/build/feature/test-glibc.c
new file mode 100644
index 000000000..9ab8e90e7
--- /dev/null
+++ b/tools/build/feature/test-glibc.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdlib.h>
+
+#if !defined(__UCLIBC__)
+#include <gnu/libc-version.h>
+#else
+#define XSTR(s) STR(s)
+#define STR(s) #s
+#endif
+
+int main(void)
+{
+#if !defined(__UCLIBC__)
+	const char *version = gnu_get_libc_version();
+#else
+	const char *version = XSTR(__GLIBC__) "." XSTR(__GLIBC_MINOR__);
+#endif
+
+	return (long)version;
+}
diff --git a/tools/build/feature/test-gtk2-infobar.c b/tools/build/feature/test-gtk2-infobar.c
new file mode 100644
index 000000000..b1b716dd5
--- /dev/null
+++ b/tools/build/feature/test-gtk2-infobar.c
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+#pragma GCC diagnostic ignored "-Wstrict-prototypes"
+#include <gtk/gtk.h>
+#pragma GCC diagnostic error "-Wstrict-prototypes"
+
+int main(int argc, char *argv[])
+{
+	gtk_init(&argc, &argv);
+	gtk_info_bar_new();
+
+	return 0;
+}
diff --git a/tools/build/feature/test-gtk2.c b/tools/build/feature/test-gtk2.c
new file mode 100644
index 000000000..2aaf4bfc2
--- /dev/null
+++ b/tools/build/feature/test-gtk2.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+#pragma GCC diagnostic ignored "-Wstrict-prototypes"
+#include <gtk/gtk.h>
+#pragma GCC diagnostic error "-Wstrict-prototypes"
+
+int main(int argc, char *argv[])
+{
+	gtk_init(&argc, &argv);
+
+        return 0;
+}
diff --git a/tools/build/feature/test-hello.c b/tools/build/feature/test-hello.c
new file mode 100644
index 000000000..c8a57194f
--- /dev/null
+++ b/tools/build/feature/test-hello.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+
+int main(void)
+{
+	return puts("hi");
+}
diff --git a/tools/build/feature/test-jvmti-cmlr.c b/tools/build/feature/test-jvmti-cmlr.c
new file mode 100644
index 000000000..c27b5b71a
--- /dev/null
+++ b/tools/build/feature/test-jvmti-cmlr.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <jvmti.h>
+#include <jvmticmlr.h>
+
+int main(void)
+{
+	jvmtiCompiledMethodLoadInlineRecord	rec __attribute__((unused));
+	jvmtiCompiledMethodLoadRecordHeader	hdr __attribute__((unused));
+	PCStackInfo				p   __attribute__((unused));
+	return 0;
+}
diff --git a/tools/build/feature/test-jvmti.c b/tools/build/feature/test-jvmti.c
new file mode 100644
index 000000000..799916d2e
--- /dev/null
+++ b/tools/build/feature/test-jvmti.c
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <jvmti.h>
+
+int main(void)
+{
+	JavaVM			jvm	__attribute__((unused));
+	jvmtiEventCallbacks	cb	__attribute__((unused));
+	jvmtiCapabilities	caps	__attribute__((unused));
+	jvmtiJlocationFormat	format	__attribute__((unused));
+	jvmtiEnv		jvmti	__attribute__((unused));
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libaio.c b/tools/build/feature/test-libaio.c
new file mode 100644
index 000000000..932133c9a
--- /dev/null
+++ b/tools/build/feature/test-libaio.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <aio.h>
+
+int main(void)
+{
+	struct aiocb aiocb;
+
+	aiocb.aio_fildes  = 0;
+	aiocb.aio_offset  = 0;
+	aiocb.aio_buf     = 0;
+	aiocb.aio_nbytes  = 0;
+	aiocb.aio_reqprio = 0;
+	aiocb.aio_sigevent.sigev_notify = 1 /*SIGEV_NONE*/;
+
+	return (int)aio_return(&aiocb);
+}
diff --git a/tools/build/feature/test-libaudit.c b/tools/build/feature/test-libaudit.c
new file mode 100644
index 000000000..f5b0863fa
--- /dev/null
+++ b/tools/build/feature/test-libaudit.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libaudit.h>
+
+extern int printf(const char *format, ...);
+
+int main(void)
+{
+	printf("error message: %s\n", audit_errno_to_name(0));
+
+	return audit_open();
+}
diff --git a/tools/build/feature/test-libbabeltrace.c b/tools/build/feature/test-libbabeltrace.c
new file mode 100644
index 000000000..10bb69d55
--- /dev/null
+++ b/tools/build/feature/test-libbabeltrace.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <babeltrace/ctf-writer/writer.h>
+#include <babeltrace/ctf-ir/stream-class.h>
+
+int main(void)
+{
+	bt_ctf_stream_class_get_packet_context_type((void *) 0);
+	return 0;
+}
diff --git a/tools/build/feature/test-libbfd-buildid.c b/tools/build/feature/test-libbfd-buildid.c
new file mode 100644
index 000000000..157644b04
--- /dev/null
+++ b/tools/build/feature/test-libbfd-buildid.c
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <bfd.h>
+
+int main(void)
+{
+	bfd *abfd = bfd_openr("Pedro", 0);
+	return abfd && (!abfd->build_id || abfd->build_id->size > 0x506564726f);
+}
diff --git a/tools/build/feature/test-libbfd.c b/tools/build/feature/test-libbfd.c
new file mode 100644
index 000000000..afa46b046
--- /dev/null
+++ b/tools/build/feature/test-libbfd.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <bfd.h>
+
+extern int printf(const char *format, ...);
+
+int main(void)
+{
+	char symbol[4096] = "FieldName__9ClassNameFd";
+	char *tmp;
+
+	tmp = bfd_demangle(0, symbol, 0);
+
+	printf("demangled symbol: {%s}\n", tmp);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libbpf.c b/tools/build/feature/test-libbpf.c
new file mode 100644
index 000000000..a508756cf
--- /dev/null
+++ b/tools/build/feature/test-libbpf.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <bpf/libbpf.h>
+
+int main(void)
+{
+	return bpf_object__open("test") ? 0 : -1;
+}
diff --git a/tools/build/feature/test-libcap.c b/tools/build/feature/test-libcap.c
new file mode 100644
index 000000000..d2a2e1521
--- /dev/null
+++ b/tools/build/feature/test-libcap.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <sys/capability.h>
+#include <linux/capability.h>
+
+int main(void)
+{
+	cap_flag_value_t val;
+	cap_t caps = cap_get_proc();
+
+	if (!caps)
+		return 1;
+
+	if (cap_get_flag(caps, CAP_SYS_ADMIN, CAP_EFFECTIVE, &val) != 0)
+		return 1;
+
+	if (cap_free(caps) != 0)
+		return 1;
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libcrypto.c b/tools/build/feature/test-libcrypto.c
new file mode 100644
index 000000000..bc34a5bbb
--- /dev/null
+++ b/tools/build/feature/test-libcrypto.c
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <openssl/evp.h>
+#include <openssl/sha.h>
+#include <openssl/md5.h>
+
+int main(void)
+{
+	EVP_MD_CTX *mdctx;
+	unsigned char md[MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH];
+	unsigned char dat[] = "12345";
+	unsigned int digest_len;
+
+	mdctx = EVP_MD_CTX_new();
+	if (!mdctx)
+		return 0;
+
+	EVP_DigestInit_ex(mdctx, EVP_md5(), NULL);
+	EVP_DigestUpdate(mdctx, &dat[0], sizeof(dat));
+	EVP_DigestFinal_ex(mdctx, &md[0], &digest_len);
+	EVP_MD_CTX_free(mdctx);
+
+	SHA1(&dat[0], sizeof(dat), &md[0]);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libdebuginfod.c b/tools/build/feature/test-libdebuginfod.c
new file mode 100644
index 000000000..da22548b8
--- /dev/null
+++ b/tools/build/feature/test-libdebuginfod.c
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <elfutils/debuginfod.h>
+
+int main(void)
+{
+	debuginfod_client* c = debuginfod_begin();
+	return (long)c;
+}
diff --git a/tools/build/feature/test-libdw-dwarf-unwind.c b/tools/build/feature/test-libdw-dwarf-unwind.c
new file mode 100644
index 000000000..ed03d9505
--- /dev/null
+++ b/tools/build/feature/test-libdw-dwarf-unwind.c
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <elfutils/libdwfl.h>
+
+int main(void)
+{
+	/*
+	 * This function is guarded via: __nonnull_attribute__ (1, 2).
+	 * Passing '1' as arguments value. This code is never executed,
+	 * only compiled.
+	 */
+	dwfl_thread_getframes((void *) 1, (void *) 1, NULL);
+	return 0;
+}
diff --git a/tools/build/feature/test-libelf-gelf_getnote.c b/tools/build/feature/test-libelf-gelf_getnote.c
new file mode 100644
index 000000000..075d062fe
--- /dev/null
+++ b/tools/build/feature/test-libelf-gelf_getnote.c
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdlib.h>
+#include <gelf.h>
+
+int main(void)
+{
+	return gelf_getnote(NULL, 0, NULL, NULL, NULL);
+}
diff --git a/tools/build/feature/test-libelf-getphdrnum.c b/tools/build/feature/test-libelf-getphdrnum.c
new file mode 100644
index 000000000..96a7f8d30
--- /dev/null
+++ b/tools/build/feature/test-libelf-getphdrnum.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libelf.h>
+
+int main(void)
+{
+	size_t dst;
+
+	return elf_getphdrnum(0, &dst);
+}
diff --git a/tools/build/feature/test-libelf-getshdrstrndx.c b/tools/build/feature/test-libelf-getshdrstrndx.c
new file mode 100644
index 000000000..ae9f2fff5
--- /dev/null
+++ b/tools/build/feature/test-libelf-getshdrstrndx.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libelf.h>
+
+int main(void)
+{
+	size_t dst;
+
+	return elf_getshdrstrndx(0, &dst);
+}
diff --git a/tools/build/feature/test-libelf.c b/tools/build/feature/test-libelf.c
new file mode 100644
index 000000000..905044127
--- /dev/null
+++ b/tools/build/feature/test-libelf.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libelf.h>
+
+int main(void)
+{
+	Elf *elf = elf_begin(0, ELF_C_READ, 0);
+
+	return (long)elf;
+}
diff --git a/tools/build/feature/test-libnuma.c b/tools/build/feature/test-libnuma.c
new file mode 100644
index 000000000..b3aa59f8b
--- /dev/null
+++ b/tools/build/feature/test-libnuma.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <numa.h>
+#include <numaif.h>
+
+int main(void)
+{
+	numa_available();
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libopencsd.c b/tools/build/feature/test-libopencsd.c
new file mode 100644
index 000000000..1547bc2c0
--- /dev/null
+++ b/tools/build/feature/test-libopencsd.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <opencsd/c_api/opencsd_c_api.h>
+
+/*
+ * Check OpenCSD library version is sufficient to provide required features
+ */
+#define OCSD_MIN_VER ((0 << 16) | (14 << 8) | (0))
+#if !defined(OCSD_VER_NUM) || (OCSD_VER_NUM < OCSD_MIN_VER)
+#error "OpenCSD >= 0.14.0 is required"
+#endif
+
+int main(void)
+{
+	(void)ocsd_get_version();
+	return 0;
+}
diff --git a/tools/build/feature/test-libperl.c b/tools/build/feature/test-libperl.c
new file mode 100644
index 000000000..0415f437e
--- /dev/null
+++ b/tools/build/feature/test-libperl.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <EXTERN.h>
+#include <perl.h>
+
+int main(void)
+{
+	perl_alloc();
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libpfm4.c b/tools/build/feature/test-libpfm4.c
new file mode 100644
index 000000000..af49b2594
--- /dev/null
+++ b/tools/build/feature/test-libpfm4.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <sys/types.h>
+#include <perfmon/pfmlib.h>
+
+int main(void)
+{
+	pfm_initialize();
+	return 0;
+}
diff --git a/tools/build/feature/test-libpython.c b/tools/build/feature/test-libpython.c
new file mode 100644
index 000000000..371c9113e
--- /dev/null
+++ b/tools/build/feature/test-libpython.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <Python.h>
+
+int main(void)
+{
+	Py_Initialize();
+
+	return 0;
+}
+#undef _GNU_SOURCE
diff --git a/tools/build/feature/test-libslang-include-subdir.c b/tools/build/feature/test-libslang-include-subdir.c
new file mode 100644
index 000000000..3ea47ec75
--- /dev/null
+++ b/tools/build/feature/test-libslang-include-subdir.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <slang/slang.h>
+
+int main(void)
+{
+	return SLsmg_init_smg();
+}
diff --git a/tools/build/feature/test-libslang.c b/tools/build/feature/test-libslang.c
new file mode 100644
index 000000000..9cbff8d1d
--- /dev/null
+++ b/tools/build/feature/test-libslang.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <slang.h>
+
+int main(void)
+{
+	return SLsmg_init_smg();
+}
diff --git a/tools/build/feature/test-libunwind-aarch64.c b/tools/build/feature/test-libunwind-aarch64.c
new file mode 100644
index 000000000..323803f49
--- /dev/null
+++ b/tools/build/feature/test-libunwind-aarch64.c
@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libunwind-aarch64.h>
+#include <stdlib.h>
+
+extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,
+					       unw_word_t ip,
+					       unw_dyn_info_t *di,
+					       unw_proc_info_t *pi,
+					       int need_unwind_info, void *arg);
+
+#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table)
+
+static unw_accessors_t accessors;
+
+int main(void)
+{
+	unw_addr_space_t addr_space;
+
+	addr_space = unw_create_addr_space(&accessors, 0);
+	if (addr_space)
+		return 0;
+
+	unw_init_remote(NULL, addr_space, NULL);
+	dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libunwind-arm.c b/tools/build/feature/test-libunwind-arm.c
new file mode 100644
index 000000000..cb378b7d6
--- /dev/null
+++ b/tools/build/feature/test-libunwind-arm.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libunwind-arm.h>
+#include <stdlib.h>
+
+extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,
+					       unw_word_t ip,
+					       unw_dyn_info_t *di,
+					       unw_proc_info_t *pi,
+					       int need_unwind_info, void *arg);
+
+
+#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table)
+
+static unw_accessors_t accessors;
+
+int main(void)
+{
+	unw_addr_space_t addr_space;
+
+	addr_space = unw_create_addr_space(&accessors, 0);
+	if (addr_space)
+		return 0;
+
+	unw_init_remote(NULL, addr_space, NULL);
+	dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libunwind-debug-frame-aarch64.c b/tools/build/feature/test-libunwind-debug-frame-aarch64.c
new file mode 100644
index 000000000..36d6646c1
--- /dev/null
+++ b/tools/build/feature/test-libunwind-debug-frame-aarch64.c
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libunwind-aarch64.h>
+#include <stdlib.h>
+
+extern int
+UNW_OBJ(dwarf_find_debug_frame) (int found, unw_dyn_info_t *di_debug,
+				 unw_word_t ip, unw_word_t segbase,
+				 const char *obj_name, unw_word_t start,
+				 unw_word_t end);
+
+#define dwarf_find_debug_frame UNW_OBJ(dwarf_find_debug_frame)
+
+int main(void)
+{
+	dwarf_find_debug_frame(0, NULL, 0, 0, NULL, 0, 0);
+	return 0;
+}
diff --git a/tools/build/feature/test-libunwind-debug-frame-arm.c b/tools/build/feature/test-libunwind-debug-frame-arm.c
new file mode 100644
index 000000000..8696e48e1
--- /dev/null
+++ b/tools/build/feature/test-libunwind-debug-frame-arm.c
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libunwind-arm.h>
+#include <stdlib.h>
+
+extern int
+UNW_OBJ(dwarf_find_debug_frame) (int found, unw_dyn_info_t *di_debug,
+				 unw_word_t ip, unw_word_t segbase,
+				 const char *obj_name, unw_word_t start,
+				 unw_word_t end);
+
+#define dwarf_find_debug_frame UNW_OBJ(dwarf_find_debug_frame)
+
+int main(void)
+{
+	dwarf_find_debug_frame(0, NULL, 0, 0, NULL, 0, 0);
+	return 0;
+}
diff --git a/tools/build/feature/test-libunwind-debug-frame.c b/tools/build/feature/test-libunwind-debug-frame.c
new file mode 100644
index 000000000..efb55cdd8
--- /dev/null
+++ b/tools/build/feature/test-libunwind-debug-frame.c
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libunwind.h>
+#include <stdlib.h>
+
+extern int
+UNW_OBJ(dwarf_find_debug_frame) (int found, unw_dyn_info_t *di_debug,
+				 unw_word_t ip, unw_word_t segbase,
+				 const char *obj_name, unw_word_t start,
+				 unw_word_t end);
+
+#define dwarf_find_debug_frame UNW_OBJ(dwarf_find_debug_frame)
+
+int main(void)
+{
+	dwarf_find_debug_frame(0, NULL, 0, 0, NULL, 0, 0);
+	return 0;
+}
diff --git a/tools/build/feature/test-libunwind-x86.c b/tools/build/feature/test-libunwind-x86.c
new file mode 100644
index 000000000..e5e0f6c89
--- /dev/null
+++ b/tools/build/feature/test-libunwind-x86.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libunwind-x86.h>
+#include <stdlib.h>
+
+extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,
+					       unw_word_t ip,
+					       unw_dyn_info_t *di,
+					       unw_proc_info_t *pi,
+					       int need_unwind_info, void *arg);
+
+
+#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table)
+
+static unw_accessors_t accessors;
+
+int main(void)
+{
+	unw_addr_space_t addr_space;
+
+	addr_space = unw_create_addr_space(&accessors, 0);
+	if (addr_space)
+		return 0;
+
+	unw_init_remote(NULL, addr_space, NULL);
+	dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libunwind-x86_64.c b/tools/build/feature/test-libunwind-x86_64.c
new file mode 100644
index 000000000..62ae4db59
--- /dev/null
+++ b/tools/build/feature/test-libunwind-x86_64.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libunwind-x86_64.h>
+#include <stdlib.h>
+
+extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,
+					       unw_word_t ip,
+					       unw_dyn_info_t *di,
+					       unw_proc_info_t *pi,
+					       int need_unwind_info, void *arg);
+
+
+#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table)
+
+static unw_accessors_t accessors;
+
+int main(void)
+{
+	unw_addr_space_t addr_space;
+
+	addr_space = unw_create_addr_space(&accessors, 0);
+	if (addr_space)
+		return 0;
+
+	unw_init_remote(NULL, addr_space, NULL);
+	dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libunwind.c b/tools/build/feature/test-libunwind.c
new file mode 100644
index 000000000..53fd26614
--- /dev/null
+++ b/tools/build/feature/test-libunwind.c
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <libunwind.h>
+#include <stdlib.h>
+
+extern int UNW_OBJ(dwarf_search_unwind_table) (unw_addr_space_t as,
+                                      unw_word_t ip,
+                                      unw_dyn_info_t *di,
+                                      unw_proc_info_t *pi,
+                                      int need_unwind_info, void *arg);
+
+
+#define dwarf_search_unwind_table UNW_OBJ(dwarf_search_unwind_table)
+
+static unw_accessors_t accessors;
+
+int main(void)
+{
+	unw_addr_space_t addr_space;
+
+	addr_space = unw_create_addr_space(&accessors, 0);
+	if (addr_space)
+		return 0;
+
+	unw_init_remote(NULL, addr_space, NULL);
+	dwarf_search_unwind_table(addr_space, 0, NULL, NULL, 0, NULL);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-libzstd.c b/tools/build/feature/test-libzstd.c
new file mode 100644
index 000000000..55268c01b
--- /dev/null
+++ b/tools/build/feature/test-libzstd.c
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <zstd.h>
+
+int main(void)
+{
+	ZSTD_CStream	*cstream;
+
+	cstream = ZSTD_createCStream();
+	ZSTD_freeCStream(cstream);
+
+	return 0;
+}
diff --git a/tools/build/feature/test-llvm-version.cpp b/tools/build/feature/test-llvm-version.cpp
new file mode 100644
index 000000000..8a0916254
--- /dev/null
+++ b/tools/build/feature/test-llvm-version.cpp
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <cstdio>
+#include "llvm/Config/llvm-config.h"
+
+#define NUM_VERSION (((LLVM_VERSION_MAJOR) << 16) + (LLVM_VERSION_MINOR << 8) + LLVM_VERSION_PATCH)
+#define pass int main() {printf("%x\n", NUM_VERSION); return 0;}
+
+#if NUM_VERSION >= 0x030900
+pass
+#else
+# error This LLVM is not tested yet.
+#endif
diff --git a/tools/build/feature/test-llvm.cpp b/tools/build/feature/test-llvm.cpp
new file mode 100644
index 000000000..88a3d1bdd
--- /dev/null
+++ b/tools/build/feature/test-llvm.cpp
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/raw_ostream.h"
+#define NUM_VERSION (((LLVM_VERSION_MAJOR) << 16) + (LLVM_VERSION_MINOR << 8) + LLVM_VERSION_PATCH)
+
+#if NUM_VERSION < 0x030900
+# error "LLVM version too low"
+#endif
+int main()
+{
+	llvm::errs() << "Hello World!\n";
+	llvm::llvm_shutdown();
+	return 0;
+}
diff --git a/tools/build/feature/test-lzma.c b/tools/build/feature/test-lzma.c
new file mode 100644
index 000000000..78682bb01
--- /dev/null
+++ b/tools/build/feature/test-lzma.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <lzma.h>
+
+int main(void)
+{
+	lzma_stream strm = LZMA_STREAM_INIT;
+	int ret;
+
+	ret = lzma_stream_decoder(&strm, UINT64_MAX, LZMA_CONCATENATED);
+	return ret ? -1 : 0;
+}
diff --git a/tools/build/feature/test-numa_num_possible_cpus.c b/tools/build/feature/test-numa_num_possible_cpus.c
new file mode 100644
index 000000000..573d07b9c
--- /dev/null
+++ b/tools/build/feature/test-numa_num_possible_cpus.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <numa.h>
+
+int main(void)
+{
+	return numa_num_possible_cpus();
+}
diff --git a/tools/build/feature/test-pthread-attr-setaffinity-np.c b/tools/build/feature/test-pthread-attr-setaffinity-np.c
new file mode 100644
index 000000000..38c71131c
--- /dev/null
+++ b/tools/build/feature/test-pthread-attr-setaffinity-np.c
@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdint.h>
+#include <pthread.h>
+#include <sched.h>
+
+int main(void)
+{
+	int ret = 0;
+	pthread_attr_t thread_attr;
+	cpu_set_t cs;
+
+	pthread_attr_init(&thread_attr);
+	CPU_ZERO(&cs);
+
+	ret = pthread_attr_setaffinity_np(&thread_attr, sizeof(cs), &cs);
+
+	return ret;
+}
diff --git a/tools/build/feature/test-pthread-barrier.c b/tools/build/feature/test-pthread-barrier.c
new file mode 100644
index 000000000..0558d9334
--- /dev/null
+++ b/tools/build/feature/test-pthread-barrier.c
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdint.h>
+#include <pthread.h>
+
+int main(void)
+{
+	pthread_barrier_t barrier;
+
+	pthread_barrier_init(&barrier, NULL, 1);
+	pthread_barrier_wait(&barrier);
+	return pthread_barrier_destroy(&barrier);
+}
diff --git a/tools/build/feature/test-reallocarray.c b/tools/build/feature/test-reallocarray.c
new file mode 100644
index 000000000..8f6743e31
--- /dev/null
+++ b/tools/build/feature/test-reallocarray.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+#define _GNU_SOURCE
+#include <stdlib.h>
+
+int main(void)
+{
+	return !!reallocarray(NULL, 1, 1);
+}
+
+#undef _GNU_SOURCE
diff --git a/tools/build/feature/test-sched_getcpu.c b/tools/build/feature/test-sched_getcpu.c
new file mode 100644
index 000000000..48995ac79
--- /dev/null
+++ b/tools/build/feature/test-sched_getcpu.c
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <sched.h>
+
+int main(void)
+{
+	return sched_getcpu();
+}
+
+#undef _GNU_SOURCE
diff --git a/tools/build/feature/test-sdt.c b/tools/build/feature/test-sdt.c
new file mode 100644
index 000000000..22737b0da
--- /dev/null
+++ b/tools/build/feature/test-sdt.c
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <sys/sdt.h>
+
+int main(void)
+{
+	DTRACE_PROBE(provider, name);
+	return 0;
+}
diff --git a/tools/build/feature/test-setns.c b/tools/build/feature/test-setns.c
new file mode 100644
index 000000000..2757c201e
--- /dev/null
+++ b/tools/build/feature/test-setns.c
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+#define _GNU_SOURCE
+#include <sched.h>
+
+int main(void)
+{
+	return setns(0, 0);
+}
+#undef _GNU_SOURCE
diff --git a/tools/build/feature/test-stackprotector-all.c b/tools/build/feature/test-stackprotector-all.c
new file mode 100644
index 000000000..c8a57194f
--- /dev/null
+++ b/tools/build/feature/test-stackprotector-all.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+
+int main(void)
+{
+	return puts("hi");
+}
diff --git a/tools/build/feature/test-sync-compare-and-swap.c b/tools/build/feature/test-sync-compare-and-swap.c
new file mode 100644
index 000000000..3bc6b0768
--- /dev/null
+++ b/tools/build/feature/test-sync-compare-and-swap.c
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdint.h>
+
+volatile uint64_t x;
+
+int main(int argc, char *argv[])
+{
+	uint64_t old, new = argc;
+
+	(void)argv;
+	do {
+		old = __sync_val_compare_and_swap(&x, 0, 0);
+	} while (!__sync_bool_compare_and_swap(&x, old, new));
+	return old == new;
+}
diff --git a/tools/build/feature/test-timerfd.c b/tools/build/feature/test-timerfd.c
new file mode 100644
index 000000000..9c72c697a
--- /dev/null
+++ b/tools/build/feature/test-timerfd.c
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * test for timerfd functions used by perf-kvm-stat-live
+ */
+#include <sys/timerfd.h>
+
+int main(void)
+{
+	struct itimerspec new_value;
+
+	int fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
+	if (fd < 0)
+		return 1;
+
+	if (timerfd_settime(fd, 0, &new_value, NULL) != 0)
+		return 1;
+
+	return 0;
+}
diff --git a/tools/build/feature/test-zlib.c b/tools/build/feature/test-zlib.c
new file mode 100644
index 000000000..da6c35794
--- /dev/null
+++ b/tools/build/feature/test-zlib.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <zlib.h>
+
+int main(void)
+{
+	z_stream zs;
+
+	inflateInit(&zs);
+	return 0;
+}