4 files changed, 12 insertions, 0 deletions
diff --git a/tools/build/.gitignore b/tools/build/.gitignore
index a776371a3502..98ae1f509592 100644
--- a/tools/build/.gitignore
+++ b/tools/build/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
 fixdep
diff --git a/tools/build/feature/.gitignore b/tools/build/feature/.gitignore
index 09b335b98842..15fcd34acdb9 100644
--- a/tools/build/feature/.gitignore
+++ b/tools/build/feature/.gitignore
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
 *.d
 *.bin
 *.output
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 621f528f7822..92012381393a 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -68,6 +68,7 @@ FILES=                                          \
          test-llvm-version.bin			\
          test-libaio.bin			\
          test-libzstd.bin			\
+         test-clang-bpf-global-var.bin		\
          test-file-handle.bin
 
 FILES := $(addprefix $(OUTPUT),$(FILES))
@@ -76,6 +77,7 @@ CC ?= $(CROSS_COMPILE)gcc
 CXX ?= $(CROSS_COMPILE)g++
 PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config
 LLVM_CONFIG ?= llvm-config
+CLANG ?= clang
 
 all: $(FILES)
 
@@ -322,6 +324,10 @@ $(OUTPUT)test-libaio.bin:
 $(OUTPUT)test-libzstd.bin:
 	$(BUILD) -lzstd
 
+$(OUTPUT)test-clang-bpf-global-var.bin:
+	$(CLANG) -S -g -target bpf -o - $(patsubst %.bin,%.c,$(@F)) |	\
+		grep BTF_KIND_VAR
+
 $(OUTPUT)test-file-handle.bin:
 	$(BUILD)
 
diff --git a/tools/build/feature/test-clang-bpf-global-var.c b/tools/build/feature/test-clang-bpf-global-var.c
new file mode 100644
index 000000000000..221f1481d52e
--- /dev/null
+++ b/tools/build/feature/test-clang-bpf-global-var.c
@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2020 Facebook
+
+volatile int global_value_for_test = 1;