linux-kernel - [PATCH] perf tools: better error messages on missing packages

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Date:	Sun, 18 Oct 2009 19:20:24 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Arnaldo Carvalho de Melo <acme@...hat.com>
CC:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	mingo@...hat.com, hpa@...or.com, paulus@...ba.org,
	a.p.zijlstra@...llo.nl, efault@....de, fweisbec@...il.com,
	tglx@...utronix.de
Subject: [PATCH] perf tools: better error messages on missing packages

From: Randy Dunlap <randy.dunlap@...cle.com>

Check for libelf headers and glibc headers separately so that
the error message correctly identifies which package
installation is missing/needed.

Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
---
 tools/perf/Makefile |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- lnx-2632-rc5.orig/tools/perf/Makefile
+++ lnx-2632-rc5/tools/perf/Makefile
@@ -422,8 +422,12 @@ ifeq ($(uname_S),Darwin)
 	PTHREAD_LIBS =
 endif
 
+ifneq ($(shell sh -c "(echo '\#include <gnu/libc-version.h>'; echo 'int main(void) { const char * version = gnu_get_libc_version(); return (long)version; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y)
+	msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
+endif
+
 ifneq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ_MMAP, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y)
-	msg := $(error No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel and glibc-dev[el]);
+	msg := $(error No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel);
 endif
 
 ifdef NO_DEMANGLE
--
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