Moving libelf check config into config/Makefile.

Signed-off-by: Jiri Olsa <jo...@redhat.com>
Cc: Arnaldo Carvalho de Melo <a...@ghostprotocols.net>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Cc: Ingo Molnar <mi...@elte.hu>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Corey Ashford <cjash...@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Borislav Petkov <b...@alien8.de>
Cc: Stephane Eranian <eran...@google.com>
---
 tools/perf/Makefile        | 46 ---------------------------------------------
 tools/perf/config/Makefile | 47 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+), 46 deletions(-)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index dcae71b..0ea3359 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -461,45 +461,6 @@ ifneq ($(MAKECMDGOALS),tags)
 # because maintaining the nesting to match is a pain.  If
 # we had "elif" things would have been much nicer...
 
-ifdef NO_LIBELF
-       NO_DWARF := 1
-       NO_DEMANGLE := 1
-       NO_LIBUNWIND := 1
-else
-FLAGS_LIBELF=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)
-ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF),libelf),y)
-       FLAGS_GLIBC=$(ALL_CFLAGS) $(ALL_LDFLAGS)
-       ifeq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC),glibc),y)
-               LIBC_SUPPORT := 1
-       endif
-       ifeq ($(BIONIC),1)
-               LIBC_SUPPORT := 1
-       endif
-       ifeq ($(LIBC_SUPPORT),1)
-               msg := $(warning No libelf found, disables 'probe' tool, please 
install elfutils-libelf-devel/libelf-dev);
-
-               NO_LIBELF := 1
-               NO_DWARF := 1
-               NO_DEMANGLE := 1
-       else
-               msg := $(error No gnu/libc-version.h found, please install 
glibc-dev[el]/glibc-static);
-       endif
-else
-       # for linking with debug library, run like:
-       # make DEBUG=1 LIBDW_DIR=/opt/libdw/
-       ifdef LIBDW_DIR
-               LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
-               LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
-       endif
-
-       FLAGS_DWARF=$(ALL_CFLAGS) $(LIBDW_CFLAGS) -ldw -lelf $(LIBDW_LDFLAGS) 
$(ALL_LDFLAGS) $(EXTLIBS)
-       ifneq ($(call try-cc,$(SOURCE_DWARF),$(FLAGS_DWARF),libdw),y)
-               msg := $(warning No libdw.h found or old libdw.h found or 
elfutils is older than 0.138, disables dwarf support. Please install new 
elfutils-devel/libdw-dev);
-               NO_DWARF := 1
-       endif # Dwarf support
-endif # SOURCE_LIBELF
-endif # NO_LIBELF
-
 # There's only x86 (both 32 and 64) support for CFI unwind so far
 ifneq ($(ARCH),x86)
        NO_LIBUNWIND := 1
@@ -541,13 +502,6 @@ BUILTIN_OBJS := $(filter-out 
$(OUTPUT)builtin-probe.o,$(BUILTIN_OBJS))
 LIB_OBJS += $(OUTPUT)util/symbol-minimal.o
 
 else # NO_LIBELF
-BASIC_CFLAGS += -DLIBELF_SUPPORT
-
-FLAGS_LIBELF=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)
-ifeq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_LIBELF),-DLIBELF_MMAP),y)
-       BASIC_CFLAGS += -DLIBELF_MMAP
-endif
-
 ifndef NO_DWARF
 ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
        msg := $(warning DWARF register mappings have not been defined for 
architecture $(ARCH), DWARF support disabled);
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 9ce522a..ef09d6c 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -108,3 +108,50 @@ ifeq ($(call try-cc,$(SOURCE_BIONIC),$(CFLAGS),bionic),y)
        EXTLIBS := $(filter-out -lpthread,$(EXTLIBS))
        BASIC_CFLAGS += -I.
 endif
+
+ifdef NO_LIBELF
+       NO_DWARF := 1
+       NO_DEMANGLE := 1
+       NO_LIBUNWIND := 1
+else
+FLAGS_LIBELF=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)
+ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF),libelf),y)
+       FLAGS_GLIBC=$(ALL_CFLAGS) $(ALL_LDFLAGS)
+       ifeq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC),glibc),y)
+               LIBC_SUPPORT := 1
+       endif
+       ifeq ($(BIONIC),1)
+               LIBC_SUPPORT := 1
+       endif
+       ifeq ($(LIBC_SUPPORT),1)
+               msg := $(warning No libelf found, disables 'probe' tool, please 
install elfutils-libelf-devel/libelf-dev);
+
+               NO_LIBELF := 1
+               NO_DWARF := 1
+               NO_DEMANGLE := 1
+       else
+               msg := $(error No gnu/libc-version.h found, please install 
glibc-dev[el]/glibc-static);
+       endif
+else
+       # for linking with debug library, run like:
+       # make DEBUG=1 LIBDW_DIR=/opt/libdw/
+       ifdef LIBDW_DIR
+               LIBDW_CFLAGS  := -I$(LIBDW_DIR)/include
+               LIBDW_LDFLAGS := -L$(LIBDW_DIR)/lib
+       endif
+
+       FLAGS_DWARF=$(ALL_CFLAGS) $(LIBDW_CFLAGS) -ldw -lelf $(LIBDW_LDFLAGS) 
$(ALL_LDFLAGS) $(EXTLIBS)
+       ifneq ($(call try-cc,$(SOURCE_DWARF),$(FLAGS_DWARF),libdw),y)
+               msg := $(warning No libdw.h found or old libdw.h found or 
elfutils is older than 0.138, disables dwarf support. Please install new 
elfutils-devel/libdw-dev);
+               NO_DWARF := 1
+       endif # Dwarf support
+endif # SOURCE_LIBELF
+endif # NO_LIBELF
+
+ifndef NO_LIBELF
+BASIC_CFLAGS += -DLIBELF_SUPPORT
+FLAGS_LIBELF=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)
+ifeq ($(call try-cc,$(SOURCE_ELF_MMAP),$(FLAGS_LIBELF),-DLIBELF_MMAP),y)
+       BASIC_CFLAGS += -DLIBELF_MMAP
+endif
+endif # NO_LIBELF
-- 
1.7.11.7

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