linux-kernel - [tip: perf/urgent] perf: Normalize gcc parameter when generating arch errno table

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Date:   Sat, 04 Apr 2020 08:41:51 -0000
From:   "tip-bot2 for He Zhe" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     He Zhe <zhe.he@...driver.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        x86 <x86@...nel.org>, LKML <linux-kernel@...r.kernel.org>
Subject: [tip: perf/urgent] perf: Normalize gcc parameter when generating arch
 errno table

The following commit has been merged into the perf/urgent branch of tip:

Commit-ID:     e4ffd066ff440a57097e9140fa9e16ceef905de8
Gitweb:        https://git.kernel.org/tip/e4ffd066ff440a57097e9140fa9e16ceef905de8
Author:        He Zhe <zhe.he@...driver.com>
AuthorDate:    Fri, 14 Feb 2020 02:21:06 +08:00
Committer:     Arnaldo Carvalho de Melo <acme@...hat.com>
CommitterDate: Thu, 26 Mar 2020 11:04:01 -03:00

perf: Normalize gcc parameter when generating arch errno table

The $(CC) passed to arch_errno_names.sh may include a series of parameters
along with gcc itself. To avoid overwriting the following parameters of
arch_errno_names.sh and break the build like below, we just pick up the
first word of the $(CC).

  find: unknown predicate `-m64/arch'
  x86_64-wrs-linux-gcc: warning: '-x c' after last input file has no effect
  x86_64-wrs-linux-gcc: error: unrecognized command line option '-m64/include/uapi/asm-generic/errno.h'
  x86_64-wrs-linux-gcc: fatal error: no input files

Signed-off-by: He Zhe <zhe.he@...driver.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lore.kernel.org/lkml/1581618066-187262-2-git-send-email-zhe.he@windriver.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/Makefile.perf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index a02aca9..d15a311 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -574,7 +574,7 @@ arch_errno_hdr_dir := $(srctree)/tools
 arch_errno_tbl := $(srctree)/tools/perf/trace/beauty/arch_errno_names.sh
 
 $(arch_errno_name_array): $(arch_errno_tbl)
-	$(Q)$(SHELL) '$(arch_errno_tbl)' $(CC) $(arch_errno_hdr_dir) > $@
+	$(Q)$(SHELL) '$(arch_errno_tbl)' $(firstword $(CC)) $(arch_errno_hdr_dir) > $@
 
 sync_file_range_arrays := $(beauty_outdir)/sync_file_range_arrays.c
 sync_file_range_tbls := $(srctree)/tools/perf/trace/beauty/sync_file_range.sh