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Tue, 5 Aug 2025 12:11:48 +0000 (GMT) From: Ilya Leoshkevich To: Arnaldo Carvalho de Melo Cc: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Thomas Richter , Ilya Leoshkevich Subject: [PATCH] perf build: Allow using compiler wrappers with CLANG Date: Tue, 5 Aug 2025 14:09:34 +0200 Message-ID: <20250805121143.1224807-1-iii@linux.ibm.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: QLWhg2QJPhkya_LMW8ImXwhHfdlNp570 X-Proofpoint-ORIG-GUID: QLWhg2QJPhkya_LMW8ImXwhHfdlNp570 X-Authority-Analysis: v=2.4 cv=GNoIEvNK c=1 sm=1 tr=0 ts=6891f50a cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=2OwXVqhp2XgA:10 a=VnNF1IyMAAAA:8 a=uRFscEWZ48GPqj20UDoA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODA1MDA4NiBTYWx0ZWRfXy7PBNkTOLGmh TrmcZ986RVQrUe7xavXUJ8X6cGgnzUNiaPjAjP6Eg7Wgv/fgchqpZcMH87Br+LVWogSGT0rPY75 oOdUchdk/R5VPJ+y8r9TkAg9EtvpWXE/Wv8DRAcXbkcSxNf+fJYnVKgkklvciRkrE8ZSKH4C4LT 711+0cZnfxyOnFsAIbIuxYVFDAakgaoumZiA+b2wSVYy6YjLkAv+xhN4ikdWKTzDtyELb4JLf9B QLNGTZxgt1DpH5DGU5napoa9vJYK6iDTxOt0TkNNNsOw5VLRQxXj1mqQj/1uar9LdN4LLId9CPU hfnJT1OdMAkCRVcBQKbyOY4dP++9jo6BGXsiVYHWDRHjAhOxYTdBRPVRxwzyZbRytM901QAXgqP N9HxQSd41QblD1W2cE5bkl59rkdmT+9S69WzCCeiME/GgBNAUwn+WuYwfQ84yOw8rj8mB5QQ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-05_03,2025-08-04_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 adultscore=0 spamscore=0 bulkscore=0 mlxscore=0 mlxlogscore=999 impostorscore=0 priorityscore=1501 suspectscore=0 lowpriorityscore=0 clxscore=1015 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2508050086 It is useful to specify CLANG="ccache clang" in order to speed up builds. Unfortunately perf's compiler detection logic does not like this: Makefile.config:704: Warning: Disabled BPF skeletons as clang (ccache clang) is missing We don't need to know the full path to $(CLANG), so using get-executable is not necessary. Fix by trying to run `$(CLANG) --version` instead. Signed-off-by: Ilya Leoshkevich --- tools/perf/Makefile.config | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 5a5832ee7b53..4bc11db5aa4d 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -700,7 +700,7 @@ ifeq ($(BUILD_BPF_SKEL),1) else ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),) $(warning Warning: Disabled BPF skeletons as libbpf is required) BUILD_BPF_SKEL := 0 - else ifeq ($(call get-executable,$(CLANG)),) + else ifneq ($(shell $(CLANG) --version >/dev/null 2>&1; echo $$?),0) $(warning Warning: Disabled BPF skeletons as clang ($(CLANG)) is missing) BUILD_BPF_SKEL := 0 else -- 2.50.1