Commit-ID:  d816ec2d1bea55cfeac373f0ab0ab8a3105e49b4
Gitweb:     http://git.kernel.org/tip/d816ec2d1bea55cfeac373f0ab0ab8a3105e49b4
Author:     Irina Tirdea <irina.tir...@intel.com>
AuthorDate: Mon, 8 Oct 2012 09:43:27 +0300
Committer:  Arnaldo Carvalho de Melo <a...@redhat.com>
CommitDate: Mon, 8 Oct 2012 17:42:16 -0300

perf tools: Update Makefile for Android

For cross-compiling on Android, some specific changes are needed in
the Makefile.

Update the Makefile to support cross-compiling for Android.
The original ideea for this was send by Bernhard Rosenkraenzer in
https://lkml.org/lkml/2012/8/23/316, but this is a rewrite.

Changes:
() support bionic in addition to glibc
() remove rt and pthread libraries that do not exist in Android
() use $(CFLAGS) when detecting initial compiler flags. This is needed
when setting CFLAGS as an argument of make (e.g. for setting --sysroot).
() include perf's local directory when building for Android to be able to find
relative paths if using --sysroot (e.g.: ../../include/linux/perf_event.h)

Signed-off-by: Irina Tirdea <irina.tir...@intel.com>
Cc: Bernhard Rosenkraenzer <bernhard.rosenkran...@linaro.org>
Cc: David Ahern <dsah...@gmail.com>
Cc: Ingo Molnar <mi...@kernel.org>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Pekka Enberg <penb...@kernel.org>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Steven Rostedt <rost...@goodmis.org>
Link: 
http://lkml.kernel.org/r/1349678613-7045-3-git-send-email-irina.tir...@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/perf/Makefile                 |   25 +++++++++++++++++++------
 tools/perf/config/feature-tests.mak |    9 +++++++++
 2 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index a7d8745..318bec8 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -155,15 +155,15 @@ SPARSE_FLAGS = -D__BIG_ENDIAN__ -D__powerpc__
 
 -include config/feature-tests.mak
 
-ifeq ($(call try-cc,$(SOURCE_HELLO),-Werror -fstack-protector-all),y)
+ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -fstack-protector-all),y)
        CFLAGS := $(CFLAGS) -fstack-protector-all
 endif
 
-ifeq ($(call try-cc,$(SOURCE_HELLO),-Werror -Wstack-protector),y)
+ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -Wstack-protector),y)
        CFLAGS := $(CFLAGS) -Wstack-protector
 endif
 
-ifeq ($(call try-cc,$(SOURCE_HELLO),-Werror -Wvolatile-register-var),y)
+ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror 
-Wvolatile-register-var),y)
        CFLAGS := $(CFLAGS) -Wvolatile-register-var
 endif
 
@@ -172,6 +172,13 @@ endif
 BASIC_CFLAGS = -Iutil/include -Iarch/$(ARCH)/include -I$(OUTPUT)util 
-I$(TRACE_EVENT_DIR) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE
 BASIC_LDFLAGS =
 
+ifeq ($(call try-cc,$(SOURCE_BIONIC),$(CFLAGS)),y)
+       BIONIC := 1
+       EXTLIBS := $(filter-out -lrt,$(EXTLIBS))
+       EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
+       BASIC_CFLAGS += -I.
+endif
+
 # Guard against environment variables
 BUILTIN_OBJS =
 LIB_H =
@@ -469,12 +476,18 @@ else
 FLAGS_LIBELF=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)
 ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF)),y)
        FLAGS_GLIBC=$(ALL_CFLAGS) $(ALL_LDFLAGS)
-       ifneq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC)),y)
-               msg := $(error No gnu/libc-version.h found, please install 
glibc-dev[el]/glibc-static);
-       else
+       ifeq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC)),y)
+               LIBC_SUPPORT := 1
+       endif
+       ifeq ($(BIONIC),1)
+               LIBC_SUPPORT := 1
+       endif
+       ifeq ($(LIBC_SUPPORT),1)
                NO_LIBELF := 1
                NO_DWARF := 1
                NO_DEMANGLE := 1
+       else
+               msg := $(error No gnu/libc-version.h found, please install 
glibc-dev[el]/glibc-static);
        endif
 else
        FLAGS_DWARF=$(ALL_CFLAGS) -ldw -lelf $(ALL_LDFLAGS) $(EXTLIBS)
diff --git a/tools/perf/config/feature-tests.mak 
b/tools/perf/config/feature-tests.mak
index eaeb0fd..3ef5ec9 100644
--- a/tools/perf/config/feature-tests.mak
+++ b/tools/perf/config/feature-tests.mak
@@ -43,6 +43,15 @@ int main(void)
 }
 endef
 
+define SOURCE_BIONIC
+#include <android/api-level.h>
+
+int main(void)
+{
+       return __ANDROID_API__;
+}
+endef
+
 define SOURCE_ELF_MMAP
 #include <libelf.h>
 int main(void)
--
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