Em Mon, Oct 08, 2012 at 09:43:27AM +0300, Irina Tirdea escreveu:
> From: Irina Tirdea <irina.tir...@intel.com>
>
> 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.
If this is a rewrite, I'm dropping Bernhard's SOB, leaving just him in
the CC list.
- Arnaldo
>
> Changes:
> () support bionic in addition to glibc
> () remove rt and pthread libraries that do not exist in Android
> () use $(CFLAGS) when detecting initial compiler flags. This is needed
> when setting CFLAGS as an argument of make (e.g. for setting --sysroot).
> () include perf's local directory when building for Android to be able to find
> relative paths if using --sysroot (e.g.: ../../include/linux/perf_event.h)
>
> Signed-off-by: Bernhard Rosenkraenzer <bernhard.rosenkran...@linaro.org>
> Signed-off-by: Irina Tirdea <irina.tir...@intel.com>
> ---
> tools/perf/Makefile | 25 +++++++++++++++++++------
> tools/perf/config/feature-tests.mak | 9 +++++++++
> 2 files changed, 28 insertions(+), 6 deletions(-)
>
> diff --git a/tools/perf/Makefile b/tools/perf/Makefile
> index 0e468b5..1a23118 100644
> --- a/tools/perf/Makefile
> +++ b/tools/perf/Makefile
> @@ -155,15 +155,15 @@ SPARSE_FLAGS = -D__BIG_ENDIAN__ -D__powerpc__
>
> -include config/feature-tests.mak
>
> -ifeq ($(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 =
> @@ -467,12 +474,18 @@ 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)
> --
> 1.7.9.5
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