From aa59dfc6dfcb3a52a1f64c97f75b9827261be25b Mon Sep 17 00:00:00 2001
From: Abhishek Vijeev <abhishek.vijeev@gmail.com>
Date: Sat, 15 Aug 2020 13:37:56 +0530
Subject: [PATCH] Set Makefile config variables for libbpf

Source files modified:

* Makefile.config - Checks whether libbpf is installed on the system.
If so, we add -lbpf to LIBS_FEATURES, -DCONFIG_HAS_LIBBPF to
FEATURE_DEFINES and set CONFIG_HAS_LIBBPF. This allows us to check for
the presence of libbpf before compiling or executing BPF c/r code and
ZDTM tests.

* Makefile - Set CONFIG_HAS_LIBBPF to clean all files.

Signed-off-by: Abhishek Vijeev <abhishek.vijeev@gmail.com>
---
 Makefile        | 1 +
 Makefile.config | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/Makefile b/Makefile
index e72dd1428..5ac4cbacd 100644
--- a/Makefile
+++ b/Makefile
@@ -208,6 +208,7 @@ else
 # To clean all files, enable make/build options here
 export CONFIG_COMPAT := y
 export CONFIG_GNUTLS := y
+export CONFIG_HAS_LIBBPF := y
 endif
 
 #
diff --git a/Makefile.config b/Makefile.config
index 98ba5d892..3d99e680b 100644
--- a/Makefile.config
+++ b/Makefile.config
@@ -15,6 +15,12 @@ ifeq ($(call pkg-config-check,libselinux),y)
         FEATURE_DEFINES	+= -DCONFIG_HAS_SELINUX
 endif
 
+ifeq ($(call pkg-config-check,libbpf),y)
+        LIBS_FEATURES	+= -lbpf
+        FEATURE_DEFINES	+= -DCONFIG_HAS_LIBBPF
+        export CONFIG_HAS_LIBBPF := y
+endif
+
 ifeq ($(NO_GNUTLS)x$(call pkg-config-check,gnutls),xy)
         LIBS_FEATURES	+= -lgnutls
         export CONFIG_GNUTLS := y