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From: Ian Rogers <irogers@google.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
	 Ian Rogers <irogers@google.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	 James Clark <james.clark@linaro.org>,
	linux-perf-users@vger.kernel.org,  linux-kernel@vger.kernel.org
Cc: sashiko-bot@kernel.org
Subject: [PATCH v1 10/11] perf config: undeclared PATH_MAX due to missing <limits.h> inclusion
Date: Wed, 16 Sep 2026 21:53:25 -0700	[thread overview]
Message-ID: <20260917045326.63601-10-irogers@google.com> (raw)
In-Reply-To: <20260917045326.63601-1-irogers@google.com>

Sashiko reported:

  When compiling the perf tool against a strict C library such as musl
  libc, a build failure occurs in home_perfconfig() and
  perf_config__set_variable() due to an undeclared PATH_MAX
  identifier.

  The PATH_MAX macro is defined in the standard POSIX <limits.h>
  header.  Because tools/perf/util/config.c does not explicitly
  include this header, build environments that lack implicit header
  inclusion fail to resolve the identifier. This causes a compiler
  error when evaluating the size of stack-allocated path arrays,
  stopping the build.

Add the header file.

Reported-by: sashiko-bot@kernel.org
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/config.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index b2972c35c1ec..5d0cfd86ede6 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -12,6 +12,7 @@
 #include "config.h"
 
 #include <errno.h>
+#include <limits.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
-- 
2.55.0.1082.g2b9226bbc0-goog


  parent reply	other threads:[~2026-09-17  4:53 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-17  4:53 [PATCH v1 01/11] perf aslr: Add missing includes and sort headers Ian Rogers
2026-09-17  4:53 ` [PATCH v1 02/11] perf bench messaging: " Ian Rogers
2026-09-17  4:59   ` sashiko-bot
2026-09-17  4:53 ` [PATCH v1 03/11] perf unwind-libdw: missing <stdlib.h> in libdw_set_initial_registers() Ian Rogers
2026-09-17  4:59   ` sashiko-bot
2026-09-17  4:53 ` [PATCH v1 04/11] perf llvm: missing explicit POSIX headers in symbol__disassemble_llvm() Ian Rogers
2026-09-17  5:00   ` sashiko-bot
2026-09-17  4:53 ` [PATCH v1 05/11] perf dso: missing POSIX headers string.h and limits.h Ian Rogers
2026-09-17  4:59   ` sashiko-bot
2026-09-17  4:53 ` [PATCH v1 06/11] perf test: missing stdio.h and signal.h inclusions in cmd_test() Ian Rogers
2026-09-17  4:58   ` sashiko-bot
2026-09-17  4:53 ` [PATCH v1 07/11] perf ui annotate-data: missing explicit inclusion of stdlib.h and stdio.h Ian Rogers
2026-09-17  5:00   ` sashiko-bot
2026-09-17  4:53 ` [PATCH v1 08/11] perf annotate-data: missing <string.h> inclusion for libc string functions Ian Rogers
2026-09-17  4:59   ` sashiko-bot
2026-09-17  4:53 ` [PATCH v1 09/11] perf mem: missing stdio.h and limits.h in mem-events.c Ian Rogers
2026-09-17  4:59   ` sashiko-bot
2026-09-17  4:53 ` Ian Rogers [this message]
2026-09-17  5:01   ` [PATCH v1 10/11] perf config: undeclared PATH_MAX due to missing <limits.h> inclusion sashiko-bot
2026-09-17  4:53 ` [PATCH v1 11/11] perf mem: missing standard POSIX headers in builtin-mem.c Ian Rogers
2026-09-17  5:02   ` sashiko-bot
2026-09-17  5:00 ` [PATCH v1 01/11] perf aslr: Add missing includes and sort headers sashiko-bot

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