[PATCH 09/10] btrfs-progs: add --disable-backtrace

[Karel Zak <kzak@redhat.com>]

It's better to use ./configure than manually edit Makefile.

Signed-off-by: Karel Zak <kzak@redhat.com>
---
 Makefile.in  |  4 ----
 configure.ac | 10 ++++++++++
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/Makefile.in b/Makefile.in
index df752d3..bdd7683 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -82,10 +82,6 @@ BUILDDIRS = $(patsubst %,build-%,$(SUBDIRS))
 INSTALLDIRS = $(patsubst %,install-%,$(SUBDIRS))
 CLEANDIRS = $(patsubst %,clean-%,$(SUBDIRS))
 
-ifeq ($(DISABLE_BACKTRACE),1)
-CFLAGS += -DBTRFS_DISABLE_BACKTRACE
-endif
-
 ifneq ($(DISABLE_DOCUMENTATION),1)
 BUILDDIRS += build-Documentation
 INSTALLDIRS += install-Documentation
diff --git a/configure.ac b/configure.ac
index f6adefb..290d022 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,16 @@ AC_DEFUN([PKG_STATIC], [
   fi
 ])
 
+
+AC_ARG_ENABLE([backtrace],
+  AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]),
+  [], [enable_backtrace=yes]
+)
+
+AS_IF([test "x$enable_backtrace" = xno], [
+  AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ])
+])
+
 dnl Define <NAME>_LIBS= and <NAME>_CFLAGS= by pkg-config
 dnl
 dnl The default PKG_CHECK_MODULES() action-if-not-found is end the
-- 
1.9.3