summaryrefslogtreecommitdiff
path: root/tools/perf/Makefile.config
diff options
context:
space:
mode:
Diffstat (limited to 'tools/perf/Makefile.config')
-rw-r--r--tools/perf/Makefile.config49
1 files changed, 37 insertions, 12 deletions
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index f3bf9297bcc0..e0304e70f182 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -239,18 +239,33 @@ ifdef PARSER_DEBUG
endif
# Try different combinations to accommodate systems that only have
-# python[2][-config] in weird combinations but always preferring
-# python2 and python2-config as per pep-0394. If python2 or python
-# aren't found, then python3 is used.
-PYTHON_AUTO := python
-PYTHON_AUTO := $(if $(call get-executable,python3),python3,$(PYTHON_AUTO))
-PYTHON_AUTO := $(if $(call get-executable,python),python,$(PYTHON_AUTO))
-PYTHON_AUTO := $(if $(call get-executable,python2),python2,$(PYTHON_AUTO))
-override PYTHON := $(call get-executable-or-default,PYTHON,$(PYTHON_AUTO))
-PYTHON_AUTO_CONFIG := \
- $(if $(call get-executable,$(PYTHON)-config),$(PYTHON)-config,python-config)
-override PYTHON_CONFIG := \
- $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO_CONFIG))
+# python[2][3]-config in weird combinations in the following order of
+# priority from lowest to highest:
+# * python3-config
+# * python-config
+# * python2-config as per pep-0394.
+# * $(PYTHON)-config (If PYTHON is user supplied but PYTHON_CONFIG isn't)
+#
+PYTHON_AUTO := python-config
+PYTHON_AUTO := $(if $(call get-executable,python3-config),python3-config,$(PYTHON_AUTO))
+PYTHON_AUTO := $(if $(call get-executable,python-config),python-config,$(PYTHON_AUTO))
+PYTHON_AUTO := $(if $(call get-executable,python2-config),python2-config,$(PYTHON_AUTO))
+
+# If PYTHON is defined but PYTHON_CONFIG isn't, then take $(PYTHON)-config as if it was the user
+# supplied value for PYTHON_CONFIG. Because it's "user supplied", error out if it doesn't exist.
+ifdef PYTHON
+ ifndef PYTHON_CONFIG
+ PYTHON_CONFIG_AUTO := $(call get-executable,$(PYTHON)-config)
+ PYTHON_CONFIG := $(if $(PYTHON_CONFIG_AUTO),$(PYTHON_CONFIG_AUTO),\
+ $(call $(error $(PYTHON)-config not found)))
+ endif
+endif
+
+# Select either auto detected python and python-config or use user supplied values if they are
+# defined. get-executable-or-default fails with an error if the first argument is supplied but
+# doesn't exist.
+override PYTHON_CONFIG := $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON_AUTO))
+override PYTHON := $(call get-executable-or-default,PYTHON,$(subst -config,,$(PYTHON_AUTO)))
grep-libs = $(filter -l%,$(1))
strip-libs = $(filter-out -l%,$(1))
@@ -553,9 +568,16 @@ ifndef NO_LIBELF
ifeq ($(feature-libbpf), 1)
EXTLIBS += -lbpf
$(call detected,CONFIG_LIBBPF_DYNAMIC)
+
+ $(call feature_check,libbpf-btf__load_from_kernel_by_id)
+ ifeq ($(feature-libbpf-btf__load_from_kernel_by_id), 1)
+ CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID
+ endif
else
dummy := $(error Error: No libbpf devel library found, please install libbpf-devel);
endif
+ else
+ CFLAGS += -DHAVE_LIBBPF_BTF__LOAD_FROM_KERNEL_BY_ID
endif
endif
@@ -649,6 +671,9 @@ ifdef BUILD_BPF_SKEL
ifeq ($(feature-clang-bpf-co-re), 0)
dummy := $(error Error: clang too old/not installed. Please install recent clang to build with BUILD_BPF_SKEL)
endif
+ ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
+ dummy := $(error Error: BPF skeleton support requires libbpf)
+ endif
$(call detected,CONFIG_PERF_BPF_SKEL)
CFLAGS += -DHAVE_BPF_SKEL
endif