From patchwork Thu Dec 16 16:38:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 12682143 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BA31C43217 for ; Thu, 16 Dec 2021 16:50:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239688AbhLPQuz (ORCPT ); Thu, 16 Dec 2021 11:50:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239753AbhLPQuy (ORCPT ); Thu, 16 Dec 2021 11:50:54 -0500 Received: from mail-wm1-x32d.google.com (mail-wm1-x32d.google.com [IPv6:2a00:1450:4864:20::32d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8D3CEC061574 for ; Thu, 16 Dec 2021 08:50:53 -0800 (PST) Received: by mail-wm1-x32d.google.com with SMTP id z206so5087265wmc.1 for ; Thu, 16 Dec 2021 08:50:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=sT7c6xsY79+p4VjCJ0GuWfCfN2sZ5xBnIoxrf7S6ddA=; b=zXJ8r9ZL0HMuqNYJiTcdyKwaAcd2Hm/hnU26Go6jzk3Hiqo6X0i9NLN9p6AspDCY0V DnjMCTaUmWGj8gTU4jp+mH45CQeZtiarFsCe+yc/f0nDOdAnPxjQC70VaJKYtLnLRShG PfSJ2EX7Nbd5fP3chAm3iaKeLZkRETpU0Ch5pbTy9u16mVSub4HJUIj7TwAybF5baBVB aXLVkPwjApwqDmEmqo9gMgPyBsB+4+3BjQeNQZ7QmKQ6kHmoEpzrgXUATJf+2OTny8zg HYP2jb9qpyT3+5zqx7mRL6VNvRtyMVnbb4ZHIkWgaGVJckVXv43kTDFrMfYDkPpU0rUj fK+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=sT7c6xsY79+p4VjCJ0GuWfCfN2sZ5xBnIoxrf7S6ddA=; b=MJOmMVq/3mrlXTM0EplYjx4sEGn/wUujx6UmrogiSeOCcmZDD43HiDI914xvM66j70 wGuM4LEBuKGbU2mIdX/N9qm2tHjfaoMNGy79resFqPdHxvt22Oa77ycRsBRxVtrebwUX X9/bhwASaSjbUjc0csObOpLOUQ29LASB8ZP0q9qvfb1MJGBoex38LMYocTILKoQie21p za3B0w71WX5fYAPMyA4IvnHmszxcmidr9VUzuJ/Wr44YWe1hiVANVLF2ByZ7lzDemS6W VLYLWHMlKtWPkZbQMrwcCWFdJujMsHCz4cATfwtoBsJzP2CvNqG8FFiHyB6GekU2SrKc mMww== X-Gm-Message-State: AOAM532bgZyXNbitxjxL50d+ClviPtw9bY0u+yOiw1V20iRWQg2RUR6j ZdS1xTOuE8dJa5mdE3iDb/rjFw== X-Google-Smtp-Source: ABdhPJyYw/JR5XWgtcqwAnuLqgpwIaezx+JHl1pGQ/V7SoktSGt0KL2b9TPIMm6Wy/etnCFJyiPINw== X-Received: by 2002:a05:600c:6d2:: with SMTP id b18mr5873052wmn.98.1639673452137; Thu, 16 Dec 2021 08:50:52 -0800 (PST) Received: from localhost.localdomain (cpc92880-cmbg19-2-0-cust679.5-4.cable.virginm.net. [82.27.106.168]) by smtp.gmail.com with ESMTPSA id y15sm7438906wry.72.2021.12.16.08.50.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Dec 2021 08:50:51 -0800 (PST) From: Jean-Philippe Brucker To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, shuah@kernel.org, nathan@kernel.org, ndesaulniers@google.com Cc: kafai@fb.com, songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com, kpsingh@kernel.org, quentin@isovalent.com, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, llvm@lists.linux.dev, Jean-Philippe Brucker Subject: [PATCH bpf-next v2 6/6] selftests/bpf: Enable cross-building with clang Date: Thu, 16 Dec 2021 16:38:43 +0000 Message-Id: <20211216163842.829836-7-jean-philippe@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20211216163842.829836-1-jean-philippe@linaro.org> References: <20211216163842.829836-1-jean-philippe@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org X-Patchwork-Delegate: bpf@iogearbox.net Cross building using clang requires passing the "-target" flag rather than using the CROSS_COMPILE prefix. Makefile.include transforms CROSS_COMPILE into CLANG_CROSS_FLAGS. Clear CROSS_COMPILE for bpftool and the host libbpf, and use the clang flags for urandom_read and bench. Acked-by: Quentin Monnet Signed-off-by: Jean-Philippe Brucker --- tools/testing/selftests/bpf/Makefile | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 43f6f3159431..42ffc24e9e71 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -170,7 +170,7 @@ $(OUTPUT)/%:%.c $(OUTPUT)/urandom_read: urandom_read.c $(call msg,BINARY,,$@) - $(Q)$(CC) $(LDFLAGS) $< $(LDLIBS) -Wl,--build-id=sha1 -o $@ + $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $< $(LDLIBS) -Wl,--build-id=sha1 -o $@ $(OUTPUT)/bpf_testmod.ko: $(VMLINUX_BTF) $(wildcard bpf_testmod/Makefile bpf_testmod/*.[ch]) $(call msg,MOD,,$@) @@ -217,7 +217,7 @@ BPFTOOL ?= $(DEFAULT_BPFTOOL) $(DEFAULT_BPFTOOL): $(wildcard $(BPFTOOLDIR)/*.[ch] $(BPFTOOLDIR)/Makefile) \ $(HOST_BPFOBJ) | $(HOST_BUILD_DIR)/bpftool $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOLDIR) \ - CC=$(HOSTCC) LD=$(HOSTLD) \ + ARCH= CROSS_COMPILE= CC=$(HOSTCC) LD=$(HOSTLD) \ EXTRA_CFLAGS='-g -O0' \ OUTPUT=$(HOST_BUILD_DIR)/bpftool/ \ LIBBPF_OUTPUT=$(HOST_BUILD_DIR)/libbpf/ \ @@ -248,7 +248,7 @@ $(HOST_BPFOBJ): $(wildcard $(BPFDIR)/*.[ch] $(BPFDIR)/Makefile) \ $(APIDIR)/linux/bpf.h \ | $(HOST_BUILD_DIR)/libbpf $(Q)$(MAKE) $(submake_extras) -C $(BPFDIR) \ - EXTRA_CFLAGS='-g -O0' \ + EXTRA_CFLAGS='-g -O0' ARCH= CROSS_COMPILE= \ OUTPUT=$(HOST_BUILD_DIR)/libbpf/ CC=$(HOSTCC) LD=$(HOSTLD) \ DESTDIR=$(HOST_SCRATCH_DIR)/ prefix= all install_headers endif @@ -551,7 +551,7 @@ $(OUTPUT)/bench: $(OUTPUT)/bench.o \ $(OUTPUT)/bench_bpf_loop.o \ $(OUTPUT)/bench_strncmp.o $(call msg,BINARY,,$@) - $(Q)$(CC) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ + $(Q)$(CC) $(CFLAGS) $(LDFLAGS) $(filter %.a %.o,$^) $(LDLIBS) -o $@ EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \ prog_tests/tests.h map_tests/tests.h verifier/tests.h \