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[PATCH 15/16] perf tools: Update android build documentation

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From: Chris Phlipot <cphlipot0@gmail.com>

Update the android build documentation according to recent android build
fixes. The instructions for step 1a and step 2 were updated to work with
NDK version 11(oldest supported version) and NDK version 12(current
version).

Signed-off-by: Chris Phlipot <cphlipot0@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1467349955-1135-5-git-send-email-cphlipot0@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Documentation/android.txt | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/tools/perf/Documentation/android.txt b/tools/perf/Documentation/android.txt
index 8484c3a04a6a..24a59998fc91 100644
--- a/tools/perf/Documentation/android.txt
+++ b/tools/perf/Documentation/android.txt
@@ -12,14 +12,14 @@ Set the NDK variable to point to the path where you installed the NDK:
 
 2. Set cross-compiling environment variables for NDK toolchain and sysroot.
 For arm:
-  export NDK_TOOLCHAIN=${NDK}/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/arm-linux-androideabi-
-  export NDK_SYSROOT=${NDK}/platforms/android-9/arch-arm
+  export NDK_TOOLCHAIN=${NDK}/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-
+  export NDK_SYSROOT=${NDK}/platforms/android-24/arch-arm
 For x86:
-  export NDK_TOOLCHAIN=${NDK}/toolchains/x86-4.6/prebuilt/linux-x86/bin/i686-linux-android-
-  export NDK_SYSROOT=${NDK}/platforms/android-9/arch-x86
+  export NDK_TOOLCHAIN=${NDK}/toolchains/x86-4.9/prebuilt/linux-x86_64/bin/i686-linux-android-
+  export NDK_SYSROOT=${NDK}/platforms/android-24/arch-x86
 
-This method is not working for Android NDK versions up to Revision 8b.
-perf uses some bionic enhancements that are not included in these NDK versions.
+This method is only tested for Android NDK versions Revision 11b and later.
+perf uses some bionic enhancements that are not included in prior NDK versions.
 You can use method (b) described below instead.
 
 (b). Use the Android source tree
@@ -49,9 +49,9 @@ II. Compile perf for Android
 ------------------------------------------------
 You need to run make with the NDK toolchain and sysroot defined above:
 For arm:
-  make ARCH=arm CROSS_COMPILE=${NDK_TOOLCHAIN} CFLAGS="--sysroot=${NDK_SYSROOT}"
+  make WERROR=0 ARCH=arm CROSS_COMPILE=${NDK_TOOLCHAIN} EXTRA_CFLAGS="-pie --sysroot=${NDK_SYSROOT}"
 For x86:
-  make ARCH=x86 CROSS_COMPILE=${NDK_TOOLCHAIN} CFLAGS="--sysroot=${NDK_SYSROOT}"
+  make WERROR=0 ARCH=x86 CROSS_COMPILE=${NDK_TOOLCHAIN} EXTRA_CFLAGS="-pie --sysroot=${NDK_SYSROOT}"
 
 III. Install perf
 -----------------------------------------------
-- 
2.7.4

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[GIT PULL 00/16] perf/core improvements and fixes Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:40 +0200
  [PATCH 10/16] perf unwind: Add initialized arg into unwind__prepare_access Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:40 +0200
  [PATCH 07/16] perf buildid-cache: Scan and import user SDT events to probe cache Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:40 +0200
  [PATCH 14/16] tools lib subcmd: Respect WERROR=0 for build Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  [PATCH 01/16] perf probe: Use cache entry if possible Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  [PATCH 05/16] perf sdt: ELF support for SDT Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  [PATCH 13/16] tools lib api: Respect WERROR=0 for build Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  [PATCH 08/16] perf header: Transform nodes string info to struct Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  [PATCH 09/16] perf tests: Fix hist accumulation test Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  [PATCH 16/16] perf tools: Sync copy of syscall_64.tbl with the kernel Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  [PATCH 15/16] perf tools: Update android build documentation Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  [PATCH 12/16] tools lib bpf: Add license header Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-07-05 02:50 +0200
  Re: [GIT PULL 00/16] perf/core improvements and fixes Ingo Molnar <mingo@kernel.org> - 2016-07-05 12:20 +0200

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