linux-kernel - Re: [GIT PULL] tools/perf/build: Speed up the perf build system

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Date:	Thu, 10 Oct 2013 16:26:08 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: Re: [GIT PULL] tools/perf/build: Speed up the perf build system

Two problems:

the message:

  BUILD:   Doing 'make -j1' parallel build

Looks funny: 'parallel' && -j1? :-)

This is on fedora12, on a kvm guest, nfs mounting /home/acme/git, all works
well up to the liblk.a part, cloning it to do it without NFS to continue
testing the integration of acme/perf/core with the build speedup patches.

- Arnaldo

----------------------

[acme@...ora12 linux]$ make O=/tmp/build/perf/ -C tools/perf install
make: Entering directory `/home/acme/git/linux/tools/perf'
  BUILD:   Doing 'make -j1' parallel build

Auto-detecting system features:
...                     backtrace: [ on  ]
...                         dwarf: [ OFF ]
...                fortify-source: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                  gtk2-infobar: [ on  ]
...                      libaudit: [ OFF ]
...                        libbfd: [ on  ]
...                        libelf: [ on  ]
...             libelf-getphdrnum: [ OFF ]
...                   libelf-mmap: [ on  ]
...                       libnuma: [ OFF ]
...                       libperl: [ OFF ]
...                     libpython: [ on  ]
...             libpython-version: [ on  ]
...                      libslang: [ on  ]
...                     libunwind: [ OFF ]
...                       on-exit: [ on  ]
...                stackprotector: [ on  ]
...            stackprotector-all: [ on  ]
...         volatile-register-var: [ on  ]

config/Makefile:278: No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev
config/Makefile:335: No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 0.99
config/Makefile:349: No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev
config/Makefile:519: No numa.h found, disables 'perf bench numa mem' benchmark, please install numa-libs-devel or libnuma-dev
  SUBDIR   /home/acme/git/linux/tools/lib/lk/
  AR       liblk.a
rm: cannot remove `liblk.a': Permission denied
make[2]: *** [liblk.a] Error 1
make[1]: *** [/tmp/build/perf/liblk.a] Error 2
make: *** [install] Error 2
make: Leaving directory `/home/acme/git/linux/tools/perf'
[acme@...ora12 linux]$ fg
-bash: fg: current: no such job
[acme@...ora12 linux]$ vim tools/perf/Makefile.perf 
[acme@...ora
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