linux-kernel - [PATCH] perf: Don't hardcode host include path for libslang

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Date:   Fri, 14 Jun 2019 11:39:47 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     bcm-kernel-feedback-list@...adcom.com,
        Florian Fainelli <f.fainelli@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Quentin Monnet <quentin.monnet@...ronome.com>,
        Stanislav Fomichev <sdf@...gle.com>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH] perf: Don't hardcode host include path for libslang

Hardcoding /usr/include/slang is fundamentally incompatible with cross
compilation and will lead to the inability for a cross-compiled
environment to properly detect whether slang is available or not.

If /usr/include/slang is necessary that is a distribution specific
knowledge that could be solved with either a standard pkg-config .pc
file (which slang has) or simply overriding CFLAGS accordingly, but the
default perf Makefile should be clean of all of that.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 tools/build/feature/Makefile | 2 +-
 tools/perf/Makefile.config   | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 4b8244ee65ce..f9432d21eff9 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -181,7 +181,7 @@ $(OUTPUT)test-libaudit.bin:
 	$(BUILD) -laudit
 
 $(OUTPUT)test-libslang.bin:
-	$(BUILD) -I/usr/include/slang -lslang
+	$(BUILD) -lslang
 
 $(OUTPUT)test-libcrypto.bin:
 	$(BUILD) -lcrypto
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 85fbcd265351..b11134fdf59f 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -641,7 +641,6 @@ ifndef NO_SLANG
     NO_SLANG := 1
   else
     # Fedora has /usr/include/slang/slang.h, but ubuntu /usr/include/slang.h
-    CFLAGS += -I/usr/include/slang
     CFLAGS += -DHAVE_SLANG_SUPPORT
     EXTLIBS += -lslang
     $(call detected,CONFIG_SLANG)
-- 
2.17.1