1 files changed, 214 insertions, 209 deletions

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index aa55850fbc21..d1ea7bf44964 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -28,85 +28,59 @@ include $(srctree)/tools/scripts/Makefile.arch
 
 $(call detected_var,SRCARCH)
 
-NO_PERF_REGS := 1
-
-ifneq ($(NO_SYSCALL_TABLE),1)
-  NO_SYSCALL_TABLE := 1
-
-  ifeq ($(SRCARCH),x86)
-    ifeq (${IS_64_BIT}, 1)
-      NO_SYSCALL_TABLE := 0
-    endif
-  else
-    ifeq ($(SRCARCH),$(filter $(SRCARCH),powerpc arm64 s390 mips loongarch))
-      NO_SYSCALL_TABLE := 0
-    endif
-  endif
-
-  ifneq ($(NO_SYSCALL_TABLE),1)
-    CFLAGS += -DHAVE_SYSCALL_TABLE_SUPPORT
-  endif
-endif
+CFLAGS += -I$(OUTPUT)arch/$(SRCARCH)/include/generated
+CFLAGS += -I$(OUTPUT)libperf/arch/$(SRCARCH)/include/generated/uapi
 
 # Additional ARCH settings for ppc
 ifeq ($(SRCARCH),powerpc)
-  NO_PERF_REGS := 0
-  CFLAGS += -I$(OUTPUT)arch/powerpc/include/generated
-  LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
+  ifndef NO_LIBUNWIND
+    LIBUNWIND_LIBS := -lunwind -lunwind-ppc64
+  endif
 endif
 
 # Additional ARCH settings for x86
 ifeq ($(SRCARCH),x86)
   $(call detected,CONFIG_X86)
   ifeq (${IS_64_BIT}, 1)
-    CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT -I$(OUTPUT)arch/x86/include/generated
+    CFLAGS += -DHAVE_ARCH_X86_64_SUPPORT
     ARCH_INCLUDE = ../../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memset_64.S
-    LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
+    ifndef NO_LIBUNWIND
+      LIBUNWIND_LIBS = -lunwind-x86_64 -lunwind -llzma
+    endif
     $(call detected,CONFIG_X86_64)
   else
-    LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
+    ifndef NO_LIBUNWIND
+      LIBUNWIND_LIBS = -lunwind-x86 -llzma -lunwind
+    endif
   endif
-  NO_PERF_REGS := 0
 endif
 
 ifeq ($(SRCARCH),arm)
-  NO_PERF_REGS := 0
-  LIBUNWIND_LIBS = -lunwind -lunwind-arm
+  ifndef NO_LIBUNWIND
+    LIBUNWIND_LIBS = -lunwind -lunwind-arm
+  endif
 endif
 
 ifeq ($(SRCARCH),arm64)
-  NO_PERF_REGS := 0
-  CFLAGS += -I$(OUTPUT)arch/arm64/include/generated
-  LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
+  ifndef NO_LIBUNWIND
+    LIBUNWIND_LIBS = -lunwind -lunwind-aarch64
+  endif
 endif
 
 ifeq ($(SRCARCH),loongarch)
-  NO_PERF_REGS := 0
-  CFLAGS += -I$(OUTPUT)arch/loongarch/include/generated
-  LIBUNWIND_LIBS = -lunwind -lunwind-loongarch64
-endif
-
-ifeq ($(SRCARCH),riscv)
-  NO_PERF_REGS := 0
-endif
-
-ifeq ($(SRCARCH),csky)
-  NO_PERF_REGS := 0
+  ifndef NO_LIBUNWIND
+    LIBUNWIND_LIBS = -lunwind -lunwind-loongarch64
+  endif
 endif
 
 ifeq ($(ARCH),s390)
-  NO_PERF_REGS := 0
-  CFLAGS += -fPIC -I$(OUTPUT)arch/s390/include/generated
+  CFLAGS += -fPIC
 endif
 
 ifeq ($(ARCH),mips)
-  NO_PERF_REGS := 0
-  CFLAGS += -I$(OUTPUT)arch/mips/include/generated
-  LIBUNWIND_LIBS = -lunwind -lunwind-mips
-endif
-
-ifeq ($(NO_PERF_REGS),0)
-  $(call detected,CONFIG_PERF_REGS)
+  ifndef NO_LIBUNWIND
+    LIBUNWIND_LIBS = -lunwind -lunwind-mips
+  endif
 endif
 
 # So far there's only x86 and arm libdw unwind support merged in perf.
@@ -117,6 +91,10 @@ ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390 csky riscv loon
   NO_LIBDW_DWARF_UNWIND := 1
 endif
 
+ifneq ($(LIBUNWIND),1)
+  NO_LIBUNWIND := 1
+endif
+
 ifeq ($(LIBUNWIND_LIBS),)
   NO_LIBUNWIND := 1
 endif
@@ -139,16 +117,18 @@ ifdef LIBUNWIND_DIR
   $(foreach libunwind_arch,$(LIBUNWIND_ARCHS),$(call libunwind_arch_set_flags,$(libunwind_arch)))
 endif
 
-# Set per-feature check compilation flags
-FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
-FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
-FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
-FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
-
-FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
-FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
-FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
-FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
+ifndef NO_LIBUNWIND
+  # Set per-feature check compilation flags
+  FEATURE_CHECK_CFLAGS-libunwind = $(LIBUNWIND_CFLAGS)
+  FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
+  FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)
+  FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)
+  
+  FEATURE_CHECK_LDFLAGS-libunwind-arm += -lunwind -lunwind-arm
+  FEATURE_CHECK_LDFLAGS-libunwind-aarch64 += -lunwind -lunwind-aarch64
+  FEATURE_CHECK_LDFLAGS-libunwind-x86 += -lunwind -llzma -lunwind-x86
+  FEATURE_CHECK_LDFLAGS-libunwind-x86_64 += -lunwind -llzma -lunwind-x86_64
+endif
 
 FEATURE_CHECK_LDFLAGS-libcrypto = -lcrypto
 
@@ -165,10 +145,6 @@ endif
 FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)
 FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)
 
-ifeq ($(NO_PERF_REGS),0)
-  CFLAGS += -DHAVE_PERF_REGS_SUPPORT
-endif
-
 # for linking with debug library, run like:
 # make DEBUG=1 LIBDW_DIR=/opt/libdw/
 ifdef LIBDW_DIR
@@ -177,10 +153,23 @@ ifdef LIBDW_DIR
 endif
 DWARFLIBS := -ldw
 ifeq ($(findstring -static,${LDFLAGS}),-static)
-  DWARFLIBS += -lelf -lebl -ldl -lz -llzma -lbz2
+  DWARFLIBS += -lelf -lz -llzma -lbz2
+
+  LIBDW_VERSION := $(shell $(PKG_CONFIG) --modversion libdw).0.0
+  LIBDW_VERSION_1 := $(word 1, $(subst ., ,$(LIBDW_VERSION)))
+  LIBDW_VERSION_2 := $(word 2, $(subst ., ,$(LIBDW_VERSION)))
+
+  # Elfutils merged libebl.a into libdw.a starting from version 0.177,
+  # Link libebl.a only if libdw is older than this version.
+  ifeq ($(shell test $(LIBDW_VERSION_2) -lt 177; echo $$?),0)
+    DWARFLIBS += -lebl
+  endif
+
+  # Must put -ldl after -lebl for dependency
+  DWARFLIBS += -ldl
 endif
-FEATURE_CHECK_CFLAGS-libdw-dwarf-unwind := $(LIBDW_CFLAGS)
-FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) $(DWARFLIBS)
+FEATURE_CHECK_CFLAGS-libdw := $(LIBDW_CFLAGS)
+FEATURE_CHECK_LDFLAGS-libdw := $(LIBDW_LDFLAGS) $(DWARFLIBS)
 
 # for linking with debug library, run like:
 # make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
@@ -191,6 +180,15 @@ endif
 FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
 FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) -lbabeltrace-ctf
 
+# for linking with debug library, run like:
+# make DEBUG=1 LIBCAPSTONE_DIR=/opt/capstone/
+ifdef LIBCAPSTONE_DIR
+  LIBCAPSTONE_CFLAGS  := -I$(LIBCAPSTONE_DIR)/include
+  LIBCAPSTONE_LDFLAGS := -L$(LIBCAPSTONE_DIR)/
+endif
+FEATURE_CHECK_CFLAGS-libcapstone := $(LIBCAPSTONE_CFLAGS)
+FEATURE_CHECK_LDFLAGS-libcapstone := $(LIBCAPSTONE_LDFLAGS) -lcapstone
+
 ifdef LIBZSTD_DIR
   LIBZSTD_CFLAGS  := -I$(LIBZSTD_DIR)/lib
   LIBZSTD_LDFLAGS := -L$(LIBZSTD_DIR)/lib
@@ -198,22 +196,27 @@ endif
 FEATURE_CHECK_CFLAGS-libzstd := $(LIBZSTD_CFLAGS)
 FEATURE_CHECK_LDFLAGS-libzstd := $(LIBZSTD_LDFLAGS)
 
+# for linking with debug library, run like:
+# make DEBUG=1 PKG_CONFIG_PATH=/opt/libtraceevent/(lib|lib64)/pkgconfig
+
+ifneq ($(NO_LIBTRACEEVENT),1)
+  ifeq ($(call get-executable,$(PKG_CONFIG)),)
+    $(error Error: $(PKG_CONFIG) needed by libtraceevent is missing on this system, please install it)
+  endif
+endif
+
 FEATURE_CHECK_CFLAGS-bpf = -I. -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(SRCARCH)/include/uapi -I$(srctree)/tools/include/uapi
 # include ARCH specific config
 -include $(src-perf)/arch/$(SRCARCH)/Makefile
 
-ifdef PERF_HAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
-  CFLAGS += -DHAVE_ARCH_REGS_QUERY_REGISTER_OFFSET
-endif
-
 include $(srctree)/tools/scripts/utilities.mak
 
 ifeq ($(call get-executable,$(FLEX)),)
-  dummy := $(error Error: $(FLEX) is missing on this system, please install it)
+  $(error Error: $(FLEX) is missing on this system, please install it)
 endif
 
 ifeq ($(call get-executable,$(BISON)),)
-  dummy := $(error Error: $(BISON) is missing on this system, please install it)
+  $(error Error: $(BISON) is missing on this system, please install it)
 endif
 
 ifneq ($(OUTPUT),)
@@ -235,11 +238,7 @@ endif
 
 ifeq ($(DEBUG),0)
 CORE_CFLAGS += -DNDEBUG=1
-ifeq ($(CC_NO_CLANG), 0)
-  CORE_CFLAGS += -O3
-else
-  CORE_CFLAGS += -O6
-endif
+CORE_CFLAGS += -O3
 else
   CORE_CFLAGS += -g
   CXXFLAGS += -g
@@ -303,6 +302,11 @@ endif
 
 ifdef PYTHON_CONFIG
   PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) $(PYTHON_CONFIG_LDFLAGS) 2>/dev/null)
+  # Update the python flags for cross compilation
+  ifdef CROSS_COMPILE
+    PYTHON_NATIVE := $(shell echo $(PYTHON_EMBED_LDOPTS) | sed 's/\(-L.*\/\)\(.*-linux-gnu\).*/\2/')
+    PYTHON_EMBED_LDOPTS := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EMBED_LDOPTS))
+  endif
   PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))
   PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil
   PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --includes 2>/dev/null)
@@ -424,7 +428,7 @@ ifeq ($(feature-file-handle), 1)
 endif
 
 ifdef NO_LIBELF
-  NO_DWARF := 1
+  NO_LIBDW := 1
   NO_LIBUNWIND := 1
   NO_LIBDW_DWARF_UNWIND := 1
   NO_LIBBPF := 1
@@ -438,49 +442,32 @@ else
       LIBC_SUPPORT := 1
     endif
     ifeq ($(LIBC_SUPPORT),1)
-      msg := $(error ERROR: No libelf found. Disables 'probe' tool, jvmti and BPF support. Please install libelf-dev, libelf-devel, elfutils-libelf-devel or build with NO_LIBELF=1.)
+      $(error ERROR: No libelf found. Disables 'probe' tool, jvmti and BPF support. Please install libelf-dev, libelf-devel, elfutils-libelf-devel or build with NO_LIBELF=1.)
     else
       ifneq ($(filter s% -fsanitize=address%,$(EXTRA_CFLAGS),),)
         ifneq ($(shell ldconfig -p | grep libasan >/dev/null 2>&1; echo $$?), 0)
-          msg := $(error No libasan found, please install libasan);
+          $(error No libasan found, please install libasan)
         endif
       endif
 
       ifneq ($(filter s% -fsanitize=undefined%,$(EXTRA_CFLAGS),),)
         ifneq ($(shell ldconfig -p | grep libubsan >/dev/null 2>&1; echo $$?), 0)
-          msg := $(error No libubsan found, please install libubsan);
+          $(error No libubsan found, please install libubsan)
         endif
       endif
 
       ifneq ($(filter s% -static%,$(LDFLAGS),),)
-        msg := $(error No static glibc found, please install glibc-static);
+        $(error No static glibc found, please install glibc-static)
       else
-        msg := $(error No gnu/libc-version.h found, please install glibc-dev[el]);
+        $(error No gnu/libc-version.h found, please install glibc-dev[el])
       endif
     endif
   else
-    ifndef NO_LIBDW_DWARF_UNWIND
-      ifneq ($(feature-libdw-dwarf-unwind),1)
-        NO_LIBDW_DWARF_UNWIND := 1
-        msg := $(warning No libdw DWARF unwind found, Please install elfutils-devel/libdw-dev >= 0.158 and/or set LIBDW_DIR);
-      endif
-    endif
-    ifneq ($(feature-dwarf), 1)
-      ifndef NO_DWARF
-        msg := $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.138, disables dwarf support. Please install new elfutils-devel/libdw-dev);
-        NO_DWARF := 1
+    ifneq ($(feature-libdw), 1)
+      ifndef NO_LIBDW
+        $(warning No libdw.h found or old libdw.h found or elfutils is older than 0.157, disables dwarf support. Please install new elfutils-devel/libdw-dev)
+        NO_LIBDW := 1
       endif
-    else
-      ifneq ($(feature-dwarf_getlocations), 1)
-        msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.157);
-      else
-        CFLAGS += -DHAVE_DWARF_GETLOCATIONS_SUPPORT
-      endif # dwarf_getlocations
-      ifneq ($(feature-dwarf_getcfi), 1)
-        msg := $(warning Old libdw.h, finding variables at given 'perf probe' point will not work, install elfutils-devel/libdw-dev >= 0.142);
-      else
-        CFLAGS += -DHAVE_DWARF_CFI_SUPPORT
-      endif # dwarf_getcfi
     endif # Dwarf support
   endif # libelf support
 endif # NO_LIBELF
@@ -491,12 +478,15 @@ ifeq ($(feature-libaio), 1)
   endif
 endif
 
-ifdef NO_DWARF
+ifdef NO_LIBDW
   NO_LIBDW_DWARF_UNWIND := 1
 endif
 
 ifeq ($(feature-scandirat), 1)
-  CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
+  # Ignore having scandirat with memory sanitizer that lacks an interceptor.
+  ifeq ($(filter s% -fsanitize=memory%,$(EXTRA_CFLAGS),),)
+    CFLAGS += -DHAVE_SCANDIRAT_SUPPORT
+  endif
 endif
 
 ifeq ($(feature-sched_getcpu), 1)
@@ -508,13 +498,14 @@ ifeq ($(feature-setns), 1)
   $(call detected,CONFIG_SETNS)
 endif
 
+ifeq ($(feature-reallocarray), 0)
+  CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
+endif
+
 ifdef CORESIGHT
   $(call feature_check,libopencsd)
   ifeq ($(feature-libopencsd), 1)
     CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)
-    ifeq ($(feature-reallocarray), 0)
-      CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
-    endif
     LDFLAGS += $(LIBOPENCSD_LDFLAGS)
     EXTLIBS += $(OPENCSDLIBS)
     $(call detected,CONFIG_LIBOPENCSD)
@@ -525,7 +516,7 @@ ifdef CORESIGHT
       endif
     endif
   else
-    dummy := $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
+    $(error Error: No libopencsd library found or the version is not up-to-date. Please install recent libopencsd to build with CORESIGHT=1)
   endif
 endif
 
@@ -551,32 +542,35 @@ ifndef NO_LIBELF
   ifeq ($(feature-libelf-gelf_getnote), 1)
     CFLAGS += -DHAVE_GELF_GETNOTE_SUPPORT
   else
-    msg := $(warning gelf_getnote() not found on libelf, SDT support disabled);
+    $(warning gelf_getnote() not found on libelf, SDT support disabled)
   endif
 
   ifeq ($(feature-libelf-getshdrstrndx), 1)
     CFLAGS += -DHAVE_ELF_GETSHDRSTRNDX_SUPPORT
   endif
 
+  ifeq ($(feature-libelf-zstd), 1)
+    ifdef NO_LIBZSTD
+      $(error Error: libzstd is required by libelf, please do not set NO_LIBZSTD)
+    endif
+  endif
+
   ifndef NO_LIBDEBUGINFOD
     $(call feature_check,libdebuginfod)
     ifeq ($(feature-libdebuginfod), 1)
       CFLAGS += -DHAVE_DEBUGINFOD_SUPPORT
       EXTLIBS += -ldebuginfod
+    else
+      $(warning No elfutils/debuginfod.h found, no debuginfo server support, please install libdebuginfod-dev/elfutils-debuginfod-client-devel or equivalent)
     endif
   endif
 
-  ifndef NO_DWARF
-    ifeq ($(origin PERF_HAVE_DWARF_REGS), undefined)
-      msg := $(warning DWARF register mappings have not been defined for architecture $(SRCARCH), DWARF support disabled);
-      NO_DWARF := 1
-    else
-      CFLAGS += -DHAVE_DWARF_SUPPORT $(LIBDW_CFLAGS)
-      LDFLAGS += $(LIBDW_LDFLAGS)
-      EXTLIBS += ${DWARFLIBS}
-      $(call detected,CONFIG_DWARF)
-    endif # PERF_HAVE_DWARF_REGS
-  endif # NO_DWARF
+  ifndef NO_LIBDW
+    CFLAGS += -DHAVE_LIBDW_SUPPORT $(LIBDW_CFLAGS)
+    LDFLAGS += $(LIBDW_LDFLAGS)
+    EXTLIBS += ${DWARFLIBS}
+    $(call detected,CONFIG_LIBDW)
+  endif # NO_LIBDW
 
   ifndef NO_LIBBPF
     ifeq ($(feature-bpf), 1)
@@ -590,11 +584,11 @@ ifndef NO_LIBELF
           $(call detected,CONFIG_LIBBPF)
           $(call detected,CONFIG_LIBBPF_DYNAMIC)
         else
-          dummy := $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel);
+          $(error Error: No libbpf devel library found or older than v1.0, please install/update libbpf-devel)
         endif
       else
         ifeq ($(NO_ZLIB), 1)
-          dummy := $(warning Warning: Statically building libbpf not possible as zlib is missing)
+          $(warning Warning: Statically building libbpf not possible as zlib is missing)
           NO_LIBBPF := 1
         else
           # Libbpf will be built as a static library from tools/lib/bpf.
@@ -609,7 +603,7 @@ endif # NO_LIBELF
 
 ifndef NO_SDT
   ifneq ($(feature-sdt), 1)
-    msg := $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev);
+    $(warning No sys/sdt.h found, no SDT events are defined, please install systemtap-sdt-devel or systemtap-sdt-dev)
     NO_SDT := 1;
   else
     CFLAGS += -DHAVE_SDT_EVENT
@@ -625,7 +619,7 @@ ifdef PERF_HAVE_JITDUMP
 endif
 
 ifeq ($(SRCARCH),powerpc)
-  ifndef NO_DWARF
+  ifndef NO_LIBDW
     CFLAGS += -DHAVE_SKIP_CALLCHAIN_IDX
   endif
 endif
@@ -633,6 +627,8 @@ endif
 ifndef NO_LIBUNWIND
   have_libunwind :=
 
+  $(call feature_check,libunwind)
+
   $(call feature_check,libunwind-x86)
   ifeq ($(feature-libunwind-x86), 1)
     $(call detected,CONFIG_LIBUNWIND_X86)
@@ -651,13 +647,13 @@ ifndef NO_LIBUNWIND
     have_libunwind = 1
     $(call feature_check,libunwind-debug-frame-aarch64)
     ifneq ($(feature-libunwind-debug-frame-aarch64), 1)
-      msg := $(warning No debug_frame support found in libunwind-aarch64);
+      $(warning No debug_frame support found in libunwind-aarch64)
       CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64
     endif
   endif
 
   ifneq ($(feature-libunwind), 1)
-    msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
+    $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR and set LIBUNWIND=1 in the make command line as it is opt-in now)
     NO_LOCAL_LIBUNWIND := 1
   else
     have_libunwind := 1
@@ -673,7 +669,7 @@ endif
 
 ifndef NO_LIBBPF
   ifneq ($(feature-bpf), 1)
-    msg := $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
+    $(warning BPF API too old. Please install recent kernel headers. BPF support in 'perf record' is disabled.)
     NO_LIBBPF := 1
   endif
 endif
@@ -686,28 +682,28 @@ endif
 
 ifeq ($(BUILD_BPF_SKEL),1)
   ifeq ($(filter -DHAVE_LIBELF_SUPPORT, $(CFLAGS)),)
-    dummy := $(warning Warning: Disabled BPF skeletons as libelf is required by bpftool)
+    $(warning Warning: Disabled BPF skeletons as libelf is required by bpftool)
     BUILD_BPF_SKEL := 0
   else ifeq ($(filter -DHAVE_ZLIB_SUPPORT, $(CFLAGS)),)
-    dummy := $(warning Warning: Disabled BPF skeletons as zlib is required by bpftool)
+    $(warning Warning: Disabled BPF skeletons as zlib is required by bpftool)
     BUILD_BPF_SKEL := 0
   else ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
-    dummy := $(warning Warning: Disabled BPF skeletons as libbpf is required)
+    $(warning Warning: Disabled BPF skeletons as libbpf is required)
     BUILD_BPF_SKEL := 0
   else ifeq ($(call get-executable,$(CLANG)),)
-    dummy := $(warning Warning: Disabled BPF skeletons as clang ($(CLANG)) is missing)
+    $(warning Warning: Disabled BPF skeletons as clang ($(CLANG)) is missing)
     BUILD_BPF_SKEL := 0
   else
     CLANG_VERSION := $(shell $(CLANG) --version | head -1 | sed 's/.*clang version \([[:digit:]]\+.[[:digit:]]\+.[[:digit:]]\+\).*/\1/g')
     ifeq ($(call version-lt3,$(CLANG_VERSION),12.0.1),1)
-      dummy := $(warning Warning: Disabled BPF skeletons as reliable BTF generation needs at least $(CLANG) version 12.0.1)
+      $(warning Warning: Disabled BPF skeletons as reliable BTF generation needs at least $(CLANG) version 12.0.1)
       BUILD_BPF_SKEL := 0
     endif
   endif
   ifeq ($(BUILD_BPF_SKEL),1)
     $(call feature_check,clang-bpf-co-re)
     ifeq ($(feature-clang-bpf-co-re), 0)
-      dummy := $(warning Warning: Disabled BPF skeletons as clang is too old)
+      $(warning Warning: Disabled BPF skeletons as clang is too old)
       BUILD_BPF_SKEL := 0
     endif
   endif
@@ -727,7 +723,7 @@ dwarf-post-unwind-text := BUG
 # setup DWARF post unwinder
 ifdef NO_LIBUNWIND
   ifdef NO_LIBDW_DWARF_UNWIND
-    msg := $(warning Disabling post unwind, no support found.);
+    $(warning Disabling post unwind, no support found.)
     dwarf-post-unwind := 0
   else
     dwarf-post-unwind-text := libdw
@@ -745,30 +741,27 @@ endif
 ifeq ($(dwarf-post-unwind),1)
   CFLAGS += -DHAVE_DWARF_UNWIND_SUPPORT
   $(call detected,CONFIG_DWARF_UNWIND)
-else
-  NO_DWARF_UNWIND := 1
 endif
 
-ifndef NO_LOCAL_LIBUNWIND
-  ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
-    $(call feature_check,libunwind-debug-frame)
-    ifneq ($(feature-libunwind-debug-frame), 1)
-      msg := $(warning No debug_frame support found in libunwind);
+ifndef NO_LIBUNWIND
+  ifndef NO_LOCAL_LIBUNWIND
+    ifeq ($(SRCARCH),$(filter $(SRCARCH),arm arm64))
+      $(call feature_check,libunwind-debug-frame)
+      ifneq ($(feature-libunwind-debug-frame), 1)
+        $(warning No debug_frame support found in libunwind)
+        CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
+      endif
+    else
+      # non-ARM has no dwarf_find_debug_frame() function:
       CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
     endif
-  else
-    # non-ARM has no dwarf_find_debug_frame() function:
-    CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME
+    EXTLIBS += $(LIBUNWIND_LIBS)
+    LDFLAGS += $(LIBUNWIND_LIBS)
+  endif
+  ifeq ($(findstring -static,${LDFLAGS}),-static)
+    # gcc -static links libgcc_eh which contans piece of libunwind
+    LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
   endif
-  EXTLIBS += $(LIBUNWIND_LIBS)
-  LDFLAGS += $(LIBUNWIND_LIBS)
-endif
-ifeq ($(findstring -static,${LDFLAGS}),-static)
-  # gcc -static links libgcc_eh which contans piece of libunwind
-  LIBUNWIND_LDFLAGS += -Wl,--allow-multiple-definition
-endif
-
-ifndef NO_LIBUNWIND
   CFLAGS  += -DHAVE_LIBUNWIND_SUPPORT
   CFLAGS  += $(LIBUNWIND_CFLAGS)
   LDFLAGS += $(LIBUNWIND_LDFLAGS)
@@ -776,26 +769,12 @@ ifndef NO_LIBUNWIND
 endif
 
 ifneq ($(NO_LIBTRACEEVENT),1)
-  ifeq ($(NO_SYSCALL_TABLE),0)
-    $(call detected,CONFIG_TRACE)
-  else
-    ifndef NO_LIBAUDIT
-      $(call feature_check,libaudit)
-      ifneq ($(feature-libaudit), 1)
-        msg := $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev);
-        NO_LIBAUDIT := 1
-      else
-        CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
-        EXTLIBS += -laudit
-        $(call detected,CONFIG_TRACE)
-      endif
-    endif
-  endif
+  $(call detected,CONFIG_TRACE)
 endif
 
 ifndef NO_LIBCRYPTO
   ifneq ($(feature-libcrypto), 1)
-    msg := $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev);
+    $(warning No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev)
     NO_LIBCRYPTO := 1
   else
     CFLAGS += -DHAVE_LIBCRYPTO_SUPPORT
@@ -807,7 +786,7 @@ endif
 ifndef NO_SLANG
   ifneq ($(feature-libslang), 1)
     ifneq ($(feature-libslang-include-subdir), 1)
-      msg := $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev);
+      $(warning slang not found, disables TUI support. Please install slang-devel, libslang-dev or libslang2-dev)
       NO_SLANG := 1
     else
       CFLAGS += -DHAVE_SLANG_INCLUDE_SUBDIR
@@ -825,7 +804,7 @@ ifdef GTK2
   FLAGS_GTK2=$(CFLAGS) $(LDFLAGS) $(EXTLIBS) $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null)
   $(call feature_check,gtk2)
   ifneq ($(feature-gtk2), 1)
-    msg := $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev);
+    $(warning GTK2 not found, disables GTK2 support. Please install gtk2-devel or libgtk2.0-dev)
     NO_GTK2 := 1
   else
     $(call feature_check,gtk2-infobar)
@@ -847,14 +826,14 @@ else
   PERL_EMBED_LIBADD = $(call grep-libs,$(PERL_EMBED_LDOPTS))
   PERL_EMBED_CCOPTS = $(shell perl -MExtUtils::Embed -e ccopts 2>/dev/null)
   PERL_EMBED_CCOPTS := $(filter-out -specs=%,$(PERL_EMBED_CCOPTS))
-  PERL_EMBED_CCOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
+  PERL_EMBED_CCOPTS := $(filter-out -flto% -ffat-lto-objects, $(PERL_EMBED_CCOPTS))
   PERL_EMBED_LDOPTS := $(filter-out -specs=%,$(PERL_EMBED_LDOPTS))
   FLAGS_PERL_EMBED=$(PERL_EMBED_CCOPTS) $(PERL_EMBED_LDOPTS)
 
   ifneq ($(feature-libperl), 1)
     CFLAGS += -DNO_LIBPERL
     NO_LIBPERL := 1
-    msg := $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev);
+    $(warning Missing perl devel files. Disabling perl scripting support, please install perl-ExtUtils-Embed/libperl-dev)
   else
     LDFLAGS += $(PERL_EMBED_LDFLAGS)
     EXTLIBS += $(PERL_EMBED_LIBADD)
@@ -869,7 +848,7 @@ endif
 ifeq ($(feature-timerfd), 1)
   CFLAGS += -DHAVE_TIMERFD_SUPPORT
 else
-  msg := $(warning No timerfd support. Disables 'perf kvm stat live');
+  $(warning No timerfd support. Disables 'perf kvm stat live')
 endif
 
 disable-python = $(eval $(disable-python_code))
@@ -901,12 +880,20 @@ else
          PYTHON_SETUPTOOLS_INSTALLED := $(shell $(PYTHON) -c 'import setuptools;' 2> /dev/null && echo "yes" || echo "no")
          ifeq ($(PYTHON_SETUPTOOLS_INSTALLED), yes)
            PYTHON_EXTENSION_SUFFIX := $(shell $(PYTHON) -c 'from importlib import machinery; print(machinery.EXTENSION_SUFFIXES[0])')
+           ifdef CROSS_COMPILE
+             PYTHON_EXTENSION_SUFFIX := $(subst $(PYTHON_NATIVE),$(shell $(CC) -dumpmachine),$(PYTHON_EXTENSION_SUFFIX))
+           endif
            LANG_BINDINGS += $(obj-perf)python/perf$(PYTHON_EXTENSION_SUFFIX)
 	 else
-           msg := $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent);
+           $(warning Missing python setuptools, the python binding won't be built, please install python3-setuptools or equivalent)
          endif
          CFLAGS += -DHAVE_LIBPYTHON_SUPPORT
          $(call detected,CONFIG_LIBPYTHON)
+         ifeq ($(filter -fPIC,$(CFLAGS)),)
+           # Building a shared library requires position independent code.
+           CFLAGS += -fPIC
+           CXXFLAGS += -fPIC
+         endif
       endif
     endif
   endif
@@ -962,7 +949,24 @@ ifdef BUILD_NONDISTRO
   ifeq ($(feature-libbfd-buildid), 1)
     CFLAGS += -DHAVE_LIBBFD_BUILDID_SUPPORT
   else
-    msg := $(warning Old version of libbfd/binutils things like PE executable profiling will not be available);
+    $(warning Old version of libbfd/binutils things like PE executable profiling will not be available)
+  endif
+endif
+
+ifndef NO_LIBLLVM
+  $(call feature_check,llvm-perf)
+  ifeq ($(feature-llvm-perf), 1)
+    CFLAGS += -DHAVE_LIBLLVM_SUPPORT
+    CFLAGS += $(shell $(LLVM_CONFIG) --cflags)
+    CXXFLAGS += -DHAVE_LIBLLVM_SUPPORT
+    CXXFLAGS += $(shell $(LLVM_CONFIG) --cxxflags)
+    LIBLLVM = $(shell $(LLVM_CONFIG) --libs all) $(shell $(LLVM_CONFIG) --system-libs)
+    EXTLIBS += -L$(shell $(LLVM_CONFIG) --libdir) $(LIBLLVM)
+    EXTLIBS += -lstdc++
+    $(call detected,CONFIG_LIBLLVM)
+  else
+    $(warning No libllvm 13+ found, slower source file resolution, please install llvm-devel/llvm-dev)
+    NO_LIBLLVM := 1
   endif
 endif
 
@@ -994,7 +998,7 @@ ifndef NO_LZMA
     EXTLIBS += -llzma
     $(call detected,CONFIG_LZMA)
   else
-    msg := $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev);
+    $(warning No liblzma found, disables xz kernel module decompression, please install xz-devel/liblzma-dev)
     NO_LZMA := 1
   endif
 endif
@@ -1007,22 +1011,11 @@ ifndef NO_LIBZSTD
     EXTLIBS += -lzstd
     $(call detected,CONFIG_ZSTD)
   else
-    msg := $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR);
+    $(warning No libzstd found, disables trace compression, please install libzstd-dev[el] and/or set LIBZSTD_DIR)
     NO_LIBZSTD := 1
   endif
 endif
 
-ifndef NO_LIBCAP
-  ifeq ($(feature-libcap), 1)
-    CFLAGS += -DHAVE_LIBCAP_SUPPORT
-    EXTLIBS += -lcap
-    $(call detected,CONFIG_LIBCAP)
-  else
-    msg := $(warning No libcap found, disables capability support, please install libcap-devel/libcap-dev);
-    NO_LIBCAP := 1
-  endif
-endif
-
 ifndef NO_BACKTRACE
   ifeq ($(feature-backtrace), 1)
     CFLAGS += -DHAVE_BACKTRACE_SUPPORT
@@ -1031,11 +1024,11 @@ endif
 
 ifndef NO_LIBNUMA
   ifeq ($(feature-libnuma), 0)
-    msg := $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev);
+    $(warning No numa.h found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev)
     NO_LIBNUMA := 1
   else
     ifeq ($(feature-numa_num_possible_cpus), 0)
-      msg := $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8);
+      $(warning Old numa library found, disables 'perf bench numa mem' benchmark, please install numactl-devel/libnuma-devel/libnuma-dev >= 2.0.8)
       NO_LIBNUMA := 1
     else
       CFLAGS += -DHAVE_LIBNUMA_SUPPORT
@@ -1090,23 +1083,32 @@ ifndef NO_LIBBABELTRACE
     EXTLIBS += -lbabeltrace-ctf
     $(call detected,CONFIG_LIBBABELTRACE)
   else
-    msg := $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev);
+    $(warning No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev)
+  endif
+endif
+
+ifndef NO_CAPSTONE
+  $(call feature_check,libcapstone)
+  ifeq ($(feature-libcapstone), 1)
+    CFLAGS += -DHAVE_LIBCAPSTONE_SUPPORT $(LIBCAPSTONE_CFLAGS)
+    LDFLAGS += $(LICAPSTONE_LDFLAGS)
+    EXTLIBS += -lcapstone
+    $(call detected,CONFIG_LIBCAPSTONE)
+  else
+    msg := $(warning No libcapstone found, disables disasm engine support for 'perf script', please install libcapstone-dev/capstone-devel);
   endif
 endif
 
 ifndef NO_AUXTRACE
   ifeq ($(SRCARCH),x86)
     ifeq ($(feature-get_cpuid), 0)
-      msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
+      $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc)
       NO_AUXTRACE := 1
     endif
   endif
   ifndef NO_AUXTRACE
     $(call detected,CONFIG_AUXTRACE)
     CFLAGS += -DHAVE_AUXTRACE_SUPPORT
-    ifeq ($(feature-reallocarray), 0)
-      CFLAGS += -DCOMPAT_NEED_REALLOCARRAY
-    endif
   endif
 endif
 
@@ -1155,17 +1157,17 @@ ifndef NO_LIBPFM4
     ASCIIDOC_EXTRA = -aHAVE_LIBPFM=1
     $(call detected,CONFIG_LIBPFM4)
   else
-    msg := $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev);
+    $(warning libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev)
   endif
 endif
 
 # libtraceevent is a recommended dependency picked up from the system.
 ifneq ($(NO_LIBTRACEEVENT),1)
-  $(call feature_check,libtraceevent)
   ifeq ($(feature-libtraceevent), 1)
-    CFLAGS += -DHAVE_LIBTRACEEVENT
-    EXTLIBS += -ltraceevent
-    LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent)
+    CFLAGS += -DHAVE_LIBTRACEEVENT $(shell $(PKG_CONFIG) --cflags libtraceevent)
+    LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtraceevent)
+    EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtraceevent)
+    LIBTRACEEVENT_VERSION := $(shell $(PKG_CONFIG) --modversion libtraceevent).0.0
     LIBTRACEEVENT_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
     LIBTRACEEVENT_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
     LIBTRACEEVENT_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEEVENT_VERSION)))
@@ -1173,18 +1175,21 @@ ifneq ($(NO_LIBTRACEEVENT),1)
     CFLAGS += -DLIBTRACEEVENT_VERSION=$(LIBTRACEEVENT_VERSION_CPP)
     $(call detected,CONFIG_LIBTRACEEVENT)
   else
-    dummy := $(error ERROR: libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel or build with NO_LIBTRACEEVENT=1)
+    $(error ERROR: libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel and/or set LIBTRACEEVENT_DIR or build with NO_LIBTRACEEVENT=1)
   endif
 
-  $(call feature_check,libtracefs)
   ifeq ($(feature-libtracefs), 1)
-    EXTLIBS += -ltracefs
-    LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs)
+    CFLAGS +=  $(shell $(PKG_CONFIG) --cflags libtracefs)
+    LDFLAGS += $(shell $(PKG_CONFIG) --libs-only-L libtracefs)
+    EXTLIBS += $(shell $(PKG_CONFIG) --libs-only-l libtracefs)
+    LIBTRACEFS_VERSION := $(shell $(PKG_CONFIG) --modversion libtracefs).0.0
     LIBTRACEFS_VERSION_1 := $(word 1, $(subst ., ,$(LIBTRACEFS_VERSION)))
     LIBTRACEFS_VERSION_2 := $(word 2, $(subst ., ,$(LIBTRACEFS_VERSION)))
     LIBTRACEFS_VERSION_3 := $(word 3, $(subst ., ,$(LIBTRACEFS_VERSION)))
     LIBTRACEFS_VERSION_CPP := $(shell expr $(LIBTRACEFS_VERSION_1) \* 255 \* 255 + $(LIBTRACEFS_VERSION_2) \* 255 + $(LIBTRACEFS_VERSION_3))
     CFLAGS += -DLIBTRACEFS_VERSION=$(LIBTRACEFS_VERSION_CPP)
+  else
+    $(warning libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
   endif
 endif