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selftests/bpf: Add a default $(CXX) value

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When using make kselftest TARGETS=bpf, tools/bpf is built with
MAKEFLAGS=rR, which causes $(CXX) to be undefined, which in turn causes
the build to fail with

  CXX      test_cpp
/bin/sh: 2: g: not found

Fix by adding a default $(CXX) value, like tools/build/feature/Makefile
already does.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200602175649.2501580-3-iii@linux.ibm.com
This commit is contained in:
Ilya Leoshkevich 2020-06-02 19:56:49 +02:00 committed by Daniel Borkmann
parent d70a6be1e2
commit e7ad28e6fd
1 changed files with 2 additions and 0 deletions
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2
tools/testing/selftests/bpf/Makefile
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@ -2,6 +2,8 @@
include ../../../../scripts/Kbuild.include
include ../../../scripts/Makefile.arch
CXX ?= $(CROSS_COMPILE)g++
CURDIR := $(abspath .)
TOOLSDIR := $(abspath ../../..)
LIBDIR := $(TOOLSDIR)/lib