add conditional build of lket-b2a. If glib2-devel is not found, just skips

and gives a warning

deleted runtime/lket/b2a/Makefile since it should be generated by configure

7 files changed, 187 insertions, 47 deletions

diff --git a/ChangeLog b/ChangeLog
index d8efa455..7fd03c98 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2006-05-27  Li Guanglei <guanglei@cn.ibm.com>
+
+	* configure.ac: add conditional build of lket-b2a
+	if glib2-devel is not found, just skips and gives
+	a warning
+	* Makefile.am:  add conditional build of lket-b2a
+	* Makefile.in, configure: regenerated
+	* runtime/lket/b2a/Makefile: deleted. Should be
+	generated by configure
+
 2006-05-26  Josh Stone  <joshua.i.stone@intel.com>
 
 	* tapsets.cxx (build_blacklist): build the sets of blacklisted
diff --git a/Makefile.am b/Makefile.am
index b8bd008b..9ab51d1e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -123,4 +123,6 @@ uninstall-local:
 	rm -rf $(DESTDIR)$(libexecdir)/$(PACKAGE)
 	-rm -rf $(DESTDIR)$(localstatedir)/cache/$(PACKAGE)
 
-#SUBDIRS = runtime/lket/b2a
+if BUILD_LKET_B2A
+  SUBDIRS = runtime/lket/b2a
+endif
diff --git a/Makefile.in b/Makefile.in
index e403d666..eea4aaef 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -102,12 +102,19 @@ CXXLINK = $(CXXLD) $(AM_CXXFLAGS) $(CXXFLAGS) $(AM_LDFLAGS) $(LDFLAGS) \
 	-o $@
 SOURCES = $(loc2c_test_SOURCES) $(stap_SOURCES) $(stpd_SOURCES)
 DIST_SOURCES = $(loc2c_test_SOURCES) $(stap_SOURCES) $(stpd_SOURCES)
+RECURSIVE_TARGETS = all-recursive check-recursive dvi-recursive \
+	html-recursive info-recursive install-data-recursive \
+	install-exec-recursive install-info-recursive \
+	install-recursive installcheck-recursive installdirs-recursive \
+	pdf-recursive ps-recursive uninstall-info-recursive \
+	uninstall-recursive
 man1dir = $(mandir)/man1
 man5dir = $(mandir)/man5
 NROFF = nroff
 MANS = $(dist_man_MANS)
 ETAGS = etags
 CTAGS = ctags
+DIST_SUBDIRS = runtime/lket/b2a
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)
 top_distdir = $(distdir)
@@ -129,6 +136,8 @@ AUTOMAKE = @AUTOMAKE@
 AWK = @AWK@
 BUILD_ELFUTILS_FALSE = @BUILD_ELFUTILS_FALSE@
 BUILD_ELFUTILS_TRUE = @BUILD_ELFUTILS_TRUE@
+BUILD_LKET_B2A_FALSE = @BUILD_LKET_B2A_FALSE@
+BUILD_LKET_B2A_TRUE = @BUILD_LKET_B2A_TRUE@
 CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
@@ -256,8 +265,9 @@ XFAIL_TESTS = $(wildcard $(p)ko/*.stp) \
 
 TESTS_ENVIRONMENT = $(srcdir)/runtest.sh
 TEST_COV_DIR = coverage
+@BUILD_LKET_B2A_TRUE@SUBDIRS = runtime/lket/b2a
 all: $(BUILT_SOURCES) config.h
-	$(MAKE) $(AM_MAKEFLAGS) all-am
+	$(MAKE) $(AM_MAKEFLAGS) all-recursive
 
 .SUFFIXES:
 .SUFFIXES: .c .cxx .o .obj
@@ -709,6 +719,65 @@ uninstall-man5:
 	  rm -f "$(DESTDIR)$(man5dir)/$$inst"; \
 	done
 
+# This directory's subdirectories are mostly independent; you can cd
+# into them and run `make' without going through this Makefile.
+# To change the values of `make' variables: instead of editing Makefiles,
+# (1) if the variable is set in `config.status', edit `config.status'
+#     (which will cause the Makefiles to be regenerated when you run `make');
+# (2) otherwise, pass the desired values on the `make' command line.
+$(RECURSIVE_TARGETS):
+	@set fnord $$MAKEFLAGS; amf=$$2; \
+	dot_seen=no; \
+	target=`echo $@ | sed s/-recursive//`; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	   || case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; esac; \
+	done; \
+	if test "$$dot_seen" = "no"; then \
+	  $(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
+	fi; test -z "$$fail"
+
+mostlyclean-recursive clean-recursive distclean-recursive \
+maintainer-clean-recursive:
+	@set fnord $$MAKEFLAGS; amf=$$2; \
+	dot_seen=no; \
+	case "$@" in \
+	  distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
+	  *) list='$(SUBDIRS)' ;; \
+	esac; \
+	rev=''; for subdir in $$list; do \
+	  if test "$$subdir" = "."; then :; else \
+	    rev="$$subdir $$rev"; \
+	  fi; \
+	done; \
+	rev="$$rev ."; \
+	target=`echo $@ | sed s/-recursive//`; \
+	for subdir in $$rev; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	   || case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; esac; \
+	done && test -z "$$fail"
+tags-recursive:
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  test "$$subdir" = . || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) tags); \
+	done
+ctags-recursive:
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  test "$$subdir" = . || (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) ctags); \
+	done
+
 ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
 	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
 	unique=`for i in $$list; do \
@@ -719,10 +788,23 @@ ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
 	mkid -fID $$unique
 tags: TAGS
 
-TAGS:  $(HEADERS) $(SOURCES) config.in $(TAGS_DEPENDENCIES) \
+TAGS: tags-recursive $(HEADERS) $(SOURCES) config.in $(TAGS_DEPENDENCIES) \
 		$(TAGS_FILES) $(LISP)
 	tags=; \
 	here=`pwd`; \
+	if ($(ETAGS) --etags-include --version) >/dev/null 2>&1; then \
+	  include_option=--etags-include; \
+	  empty_fix=.; \
+	else \
+	  include_option=--include; \
+	  empty_fix=; \
+	fi; \
+	list='$(SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test ! -f $$subdir/TAGS || \
+	      tags="$$tags $$include_option=$$here/$$subdir/TAGS"; \
+	  fi; \
+	done; \
 	list='$(SOURCES) $(HEADERS) config.in $(LISP) $(TAGS_FILES)'; \
 	unique=`for i in $$list; do \
 	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
@@ -735,7 +817,7 @@ TAGS:  $(HEADERS) $(SOURCES) config.in $(TAGS_DEPENDENCIES) \
 	    $$tags $$unique; \
 	fi
 ctags: CTAGS
-CTAGS:  $(HEADERS) $(SOURCES) config.in $(TAGS_DEPENDENCIES) \
+CTAGS: ctags-recursive $(HEADERS) $(SOURCES) config.in $(TAGS_DEPENDENCIES) \
 		$(TAGS_FILES) $(LISP)
 	tags=; \
 	here=`pwd`; \
@@ -860,6 +942,21 @@ distdir: $(DISTFILES)
 	    || exit 1; \
 	  fi; \
 	done
+	list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    test -d "$(distdir)/$$subdir" \
+	    || $(mkdir_p) "$(distdir)/$$subdir" \
+	    || exit 1; \
+	    distdir=`$(am__cd) $(distdir) && pwd`; \
+	    top_distdir=`$(am__cd) $(top_distdir) && pwd`; \
+	    (cd $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$top_distdir" \
+	        distdir="$$distdir/$$subdir" \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
 	$(MAKE) $(AM_MAKEFLAGS) \
 	  top_distdir="$(top_distdir)" distdir="$(distdir)" \
 	  dist-hook
@@ -963,22 +1060,23 @@ distcleancheck: distclean
 check-am: all-am
 	$(MAKE) $(AM_MAKEFLAGS) check-TESTS
 check: $(BUILT_SOURCES)
-	$(MAKE) $(AM_MAKEFLAGS) check-am
+	$(MAKE) $(AM_MAKEFLAGS) check-recursive
 all-am: Makefile $(PROGRAMS) $(SCRIPTS) $(MANS) config.h
-installdirs:
+installdirs: installdirs-recursive
+installdirs-am:
 	for dir in "$(DESTDIR)$(bindir)" "$(DESTDIR)$(pkglibexecdir)" "$(DESTDIR)$(pkglibexecdir)" "$(DESTDIR)$(man1dir)" "$(DESTDIR)$(man5dir)"; do \
 	  test -z "$$dir" || $(mkdir_p) "$$dir"; \
 	done
 install: $(BUILT_SOURCES)
-	$(MAKE) $(AM_MAKEFLAGS) install-am
-install-exec: install-exec-am
-install-data: install-data-am
-uninstall: uninstall-am
+	$(MAKE) $(AM_MAKEFLAGS) install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
 
 install-am: all-am
 	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
 
-installcheck: installcheck-am
+installcheck: installcheck-recursive
 install-strip:
 	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
 	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
@@ -997,25 +1095,25 @@ maintainer-clean-generic:
 	@echo "it deletes files that may require special tools to rebuild."
 	-test -z "$(BUILT_SOURCES)" || rm -f $(BUILT_SOURCES)
 @BUILD_ELFUTILS_FALSE@install-exec-local:
-clean: clean-am
+clean: clean-recursive
 
 clean-am: clean-binPROGRAMS clean-generic clean-local \
 	clean-noinstPROGRAMS clean-pkglibexecPROGRAMS mostlyclean-am
 
-distclean: distclean-am
+distclean: distclean-recursive
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
 	-rm -rf ./$(DEPDIR)
 	-rm -f Makefile
 distclean-am: clean-am distclean-compile distclean-generic \
 	distclean-hdr distclean-tags
 
-dvi: dvi-am
+dvi: dvi-recursive
 
 dvi-am:
 
-html: html-am
+html: html-recursive
 
-info: info-am
+info: info-recursive
 
 info-am:
 
@@ -1024,28 +1122,28 @@ install-data-am: install-data-local install-man
 install-exec-am: install-binPROGRAMS install-exec-local \
 	install-pkglibexecPROGRAMS install-pkglibexecSCRIPTS
 
-install-info: install-info-am
+install-info: install-info-recursive
 
 install-man: install-man1 install-man5
 
 installcheck-am:
 
-maintainer-clean: maintainer-clean-am
+maintainer-clean: maintainer-clean-recursive
 	-rm -f $(am__CONFIG_DISTCLEAN_FILES)
 	-rm -rf $(top_srcdir)/autom4te.cache
 	-rm -rf ./$(DEPDIR)
 	-rm -f Makefile
 maintainer-clean-am: distclean-am maintainer-clean-generic
 
-mostlyclean: mostlyclean-am
+mostlyclean: mostlyclean-recursive
 
 mostlyclean-am: mostlyclean-compile mostlyclean-generic
 
-pdf: pdf-am
+pdf: pdf-recursive
 
 pdf-am:
 
-ps: ps-am
+ps: ps-recursive
 
 ps-am:
 
@@ -1053,27 +1151,31 @@ uninstall-am: uninstall-binPROGRAMS uninstall-info-am uninstall-local \
 	uninstall-man uninstall-pkglibexecPROGRAMS \
 	uninstall-pkglibexecSCRIPTS
 
+uninstall-info: uninstall-info-recursive
+
 uninstall-man: uninstall-man1 uninstall-man5
 
-.PHONY: CTAGS GTAGS all all-am am--refresh check check-TESTS check-am \
-	clean clean-binPROGRAMS clean-generic clean-local \
-	clean-noinstPROGRAMS clean-pkglibexecPROGRAMS ctags dist \
-	dist-all dist-bzip2 dist-gzip dist-hook dist-shar dist-tarZ \
-	dist-zip distcheck distclean distclean-compile \
-	distclean-generic distclean-hdr distclean-tags distcleancheck \
-	distdir distuninstallcheck dvi dvi-am html html-am info \
-	info-am install install-am install-binPROGRAMS install-data \
+.PHONY: $(RECURSIVE_TARGETS) CTAGS GTAGS all all-am am--refresh check \
+	check-TESTS check-am clean clean-binPROGRAMS clean-generic \
+	clean-local clean-noinstPROGRAMS clean-pkglibexecPROGRAMS \
+	clean-recursive ctags ctags-recursive dist dist-all dist-bzip2 \
+	dist-gzip dist-hook dist-shar dist-tarZ dist-zip distcheck \
+	distclean distclean-compile distclean-generic distclean-hdr \
+	distclean-recursive distclean-tags distcleancheck distdir \
+	distuninstallcheck dvi dvi-am html html-am info info-am \
+	install install-am install-binPROGRAMS install-data \
 	install-data-am install-data-local install-exec \
 	install-exec-am install-exec-local install-info \
 	install-info-am install-man install-man1 install-man5 \
 	install-pkglibexecPROGRAMS install-pkglibexecSCRIPTS \
 	install-strip installcheck installcheck-am installdirs \
-	maintainer-clean maintainer-clean-generic mostlyclean \
-	mostlyclean-compile mostlyclean-generic pdf pdf-am ps ps-am \
-	tags uninstall uninstall-am uninstall-binPROGRAMS \
-	uninstall-info-am uninstall-local uninstall-man uninstall-man1 \
-	uninstall-man5 uninstall-pkglibexecPROGRAMS \
-	uninstall-pkglibexecSCRIPTS
+	installdirs-am maintainer-clean maintainer-clean-generic \
+	maintainer-clean-recursive mostlyclean mostlyclean-compile \
+	mostlyclean-generic mostlyclean-recursive pdf pdf-am ps ps-am \
+	tags tags-recursive uninstall uninstall-am \
+	uninstall-binPROGRAMS uninstall-info-am uninstall-local \
+	uninstall-man uninstall-man1 uninstall-man5 \
+	uninstall-pkglibexecPROGRAMS uninstall-pkglibexecSCRIPTS
 
 @BUILD_ELFUTILS_TRUE@stamp-elfutils: config.status
 @BUILD_ELFUTILS_TRUE@	$(MAKE) $(AM_MAKEFLAGS) -C build-elfutils all
@@ -1126,8 +1228,6 @@ uninstall-local:
 	rm -rf $(DESTDIR)$(pkgdatadir)
 	rm -rf $(DESTDIR)$(libexecdir)/$(PACKAGE)
 	-rm -rf $(DESTDIR)$(localstatedir)/cache/$(PACKAGE)
-
-#SUBDIRS = runtime/lket/b2a
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT:
diff --git a/configure b/configure
index db18d84d..801d7061 100755
--- a/configure
+++ b/configure
@@ -310,7 +310,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CXX CXXFLAGS ac_ct_CXX CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE CPP EGREP U ANSI2KNR RANLIB ac_ct_RANLIB BUILD_ELFUTILS_TRUE BUILD_ELFUTILS_FALSE stap_LIBS DATE LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT LN_S CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT DEPDIR am__include am__quote AMDEP_TRUE AMDEP_FALSE AMDEPBACKSLASH CCDEPMODE am__fastdepCC_TRUE am__fastdepCC_FALSE CXX CXXFLAGS ac_ct_CXX CXXDEPMODE am__fastdepCXX_TRUE am__fastdepCXX_FALSE CPP EGREP U ANSI2KNR RANLIB ac_ct_RANLIB BUILD_ELFUTILS_TRUE BUILD_ELFUTILS_FALSE BUILD_LKET_B2A_TRUE BUILD_LKET_B2A_FALSE stap_LIBS DATE LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -5103,6 +5103,23 @@ else
 fi
 
 
+
+if pkg-config --atleast-version 2.0.0 glib-2.0; then
+  BUILD_LKET_B2A_TRUE=
+  BUILD_LKET_B2A_FALSE='#'
+else
+  BUILD_LKET_B2A_TRUE='#'
+  BUILD_LKET_B2A_FALSE=
+fi
+
+
+if ! pkg-config --atleast-version 2.0.0 glib-2.0; then
+  { echo "$as_me:$LINENO: WARNING: glib2-devel is required to build lket-b2a.
+  no glib2-devel found, skip building lket-b2a..." >&5
+echo "$as_me: WARNING: glib2-devel is required to build lket-b2a.
+  no glib2-devel found, skip building lket-b2a..." >&2;}
+fi
+
 if test $build_elfutils = no; then
   # Need libdwfl-capable recent elfutils from Fedora
   save_LIBS="$LIBS"
@@ -5205,8 +5222,7 @@ DATE="$date"
 
           ac_config_headers="$ac_config_headers config.h:config.in"
 
-#AC_CONFIG_FILES(Makefile systemtap.spec stp_check stap.1 stapprobes.5 stapfuncs.5 stapex.5 lket.5 runtime/lket/b2a/Makefile)
-                                                                                ac_config_files="$ac_config_files Makefile systemtap.spec stp_check stap.1 stapprobes.5 stapfuncs.5 stapex.5 lket.5"
+                                                                                          ac_config_files="$ac_config_files Makefile systemtap.spec stp_check stap.1 stapprobes.5 stapfuncs.5 stapex.5 lket.5 runtime/lket/b2a/Makefile"
 
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
@@ -5341,6 +5357,13 @@ echo "$as_me: error: conditional \"BUILD_ELFUTILS\" was never defined.
 Usually this means the macro was only invoked conditionally." >&2;}
    { (exit 1); exit 1; }; }
 fi
+if test -z "${BUILD_LKET_B2A_TRUE}" && test -z "${BUILD_LKET_B2A_FALSE}"; then
+  { { echo "$as_me:$LINENO: error: conditional \"BUILD_LKET_B2A\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"BUILD_LKET_B2A\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 
 : ${CONFIG_STATUS=./config.status}
 ac_clean_files_save=$ac_clean_files
@@ -5793,6 +5816,7 @@ do
   "stapfuncs.5" ) CONFIG_FILES="$CONFIG_FILES stapfuncs.5" ;;
   "stapex.5" ) CONFIG_FILES="$CONFIG_FILES stapex.5" ;;
   "lket.5" ) CONFIG_FILES="$CONFIG_FILES lket.5" ;;
+  "runtime/lket/b2a/Makefile" ) CONFIG_FILES="$CONFIG_FILES runtime/lket/b2a/Makefile" ;;
   "depfiles" ) CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
   "config.h" ) CONFIG_HEADERS="$CONFIG_HEADERS config.h:config.in" ;;
   *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
@@ -5936,6 +5960,8 @@ s,@RANLIB@,$RANLIB,;t t
 s,@ac_ct_RANLIB@,$ac_ct_RANLIB,;t t
 s,@BUILD_ELFUTILS_TRUE@,$BUILD_ELFUTILS_TRUE,;t t
 s,@BUILD_ELFUTILS_FALSE@,$BUILD_ELFUTILS_FALSE,;t t
+s,@BUILD_LKET_B2A_TRUE@,$BUILD_LKET_B2A_TRUE,;t t
+s,@BUILD_LKET_B2A_FALSE@,$BUILD_LKET_B2A_FALSE,;t t
 s,@stap_LIBS@,$stap_LIBS,;t t
 s,@DATE@,$DATE,;t t
 s,@LIBOBJS@,$LIBOBJS,;t t
diff --git a/configure.ac b/configure.ac
index 37a42ed6..178187bc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -33,6 +33,12 @@ yes) AC_MSG_ERROR([--with-elfutils requires an argument]) ;;
 *) build_elfutils=yes ;;
 esac])
 AM_CONDITIONAL(BUILD_ELFUTILS, test $build_elfutils = yes)
+AM_CONDITIONAL(BUILD_LKET_B2A, pkg-config --atleast-version 2.0.0 glib-2.0)
+
+if ! pkg-config --atleast-version 2.0.0 glib-2.0; then
+  AC_MSG_WARN([glib2-devel is required to build lket-b2a.
+  no glib2-devel found, skip building lket-b2a...])
+fi
 
 if test $build_elfutils = no; then
   # Need libdwfl-capable recent elfutils from Fedora
@@ -53,8 +59,7 @@ AC_DEFINE_UNQUOTED(DATE, "$date", [Configuration/build date])
 AC_SUBST(DATE, "$date")
 
 AC_CONFIG_HEADERS([config.h:config.in])
-#AC_CONFIG_FILES(Makefile systemtap.spec stp_check stap.1 stapprobes.5 stapfuncs.5 stapex.5 lket.5 runtime/lket/b2a/Makefile)
-AC_CONFIG_FILES(Makefile systemtap.spec stp_check stap.1 stapprobes.5 stapfuncs.5 stapex.5 lket.5 )
+AC_CONFIG_FILES(Makefile systemtap.spec stp_check stap.1 stapprobes.5 stapfuncs.5 stapex.5 lket.5 runtime/lket/b2a/Makefile)
 AC_OUTPUT
 
 if test $build_elfutils = yes; then
diff --git a/runtime/lket/b2a/Makefile b/runtime/lket/b2a/Makefile
deleted file mode 100644
index 1e3780c7..00000000
--- a/runtime/lket/b2a/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-all:
-	gcc -O2 -D_GNU_SOURCE -Wall lket_b2a.c -o lket-b2a `pkg-config --cflags --libs glib-2.0`
-clean:
-	rm -f lket-b2a
-	
diff --git a/runtime/lket/b2a/Makefile.in b/runtime/lket/b2a/Makefile.in
index 4ea748cb..55a33959 100644
--- a/runtime/lket/b2a/Makefile.in
+++ b/runtime/lket/b2a/Makefile.in
@@ -74,6 +74,8 @@ AUTOMAKE = @AUTOMAKE@
 AWK = @AWK@
 BUILD_ELFUTILS_FALSE = @BUILD_ELFUTILS_FALSE@
 BUILD_ELFUTILS_TRUE = @BUILD_ELFUTILS_TRUE@
+BUILD_LKET_B2A_FALSE = @BUILD_LKET_B2A_FALSE@
+BUILD_LKET_B2A_TRUE = @BUILD_LKET_B2A_TRUE@
 CC = @CC@
 CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@