From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>
In the process of changing the API for libtracefs before it becomes live,
add LOCAL_LIBS make command line variable to allow overriding the check if
libtracevent and libtracefs exist. If LOCAL_LIBS=1 is set on the make
command line, then the local versions of the libraries are built.
This is mostly for debug purposes, so it does not need to be documented.
Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
Makefile | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/Makefile b/Makefile
index 7aef50b3..eb833f67 100644
--- a/Makefile
+++ b/Makefile
@@ -232,7 +232,15 @@ LIBTRACEFS=libtracefs
LIBTRACEFS_DIR = $(obj)/lib/tracefs
LIBTRACEFS_STATIC = $(LIBTRACEFS_DIR)/libtracefs.a
-ifeq ($(shell sh -c "$(PKG_CONFIG) --cflags $(LIBTRACEEVENT) > /dev/null 2>&1 && echo y"), y)
+# In the special case (debugging), that the local versions of the
+# libraries need to be built, adding "LOCAL_LIBS=1" to the make
+# command line will skip the check if they are installed.
+ifneq ("$(origin LOCAL_LIBS)", "command line")
+TEST_LIBTRACEEVENT = $(shell sh -c "$(PKG_CONFIG) --cflags $(LIBTRACEEVENT) > /dev/null 2>&1 && echo y")
+TEST_LIBTRACEFS = $(shell sh -c "$(PKG_CONFIG) --cflags $(LIBTRACEFS) > /dev/null 2>&1 && echo y")
+endif
+
+ifeq ("$(TEST_LIBTRACEEVENT)", "y")
LIBTRACEEVENT_CFLAGS = $(shell sh -c "$(PKG_CONFIG) --cflags $(LIBTRACEEVENT)")
LIBTRACEEVENT_LDLAGS = $(shell sh -c "$(PKG_CONFIG) --libs $(LIBTRACEEVENT)")
else
@@ -243,7 +251,7 @@ endif
export LIBTRACEEVENT_CFLAGS LIBTRACEEVENT_LDLAGS
-ifeq ($(shell sh -c "$(PKG_CONFIG) --cflags $(LIBTRACEFS) > /dev/null 2>&1 && echo y"), y)
+ifeq ("$(TEST_LIBTRACEFS)", "y")
LIBTRACEFS_CFLAGS = $(shell sh -c "$(PKG_CONFIG) --cflags $(LIBTRACEFS)")
LIBTRACEFS_LDLAGS = $(shell sh -c "$(PKG_CONFIG) --libs $(LIBTRACEFS)")
else
--
2.25.4
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