[ltt-dev] [PATCH 02/11] use autoconf symbolic linking

[Paolo Bonzini]

Instead of copying.  This is less error-prone while developing and
lets Automake handle more stuff.  The definition of the two variables
in configure.ac is changed later.

Signed-off-by: Paolo Bonzini <pbonzini at redhat.com>
---
 Makefile.am  |    8 --------
 configure.ac |    6 ++++++
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 4f915e1..3e0e164 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -38,16 +38,3 @@ liburcu_signal_la_CFLAGS = -DRCU_SIGNAL
 liburcu_bp_la_SOURCES = urcu-bp.c urcu-pointer.c $(COMPAT)
 
 liburcu_defer_la_SOURCES = urcu-defer.c $(COMPAT)
-
-$(top_srcdir)/*.h $(top_srcdir)/*.c: urcu/arch.h urcu/uatomic_arch.h
-
-urcu/arch.h: $(top_srcdir)/urcu/arch_ at ARCHTYPE@.h
-	$(mkdir_p) $(top_builddir)/urcu
-	cp -f $(top_srcdir)/urcu/arch_ at ARCHTYPE@.h $(top_builddir)/urcu/arch.h
-
-urcu/uatomic_arch.h: $(top_srcdir)/urcu/uatomic_arch_ at ARCHTYPE@.h
-	$(mkdir_p) $(top_builddir)/urcu
-	cp -f $(top_srcdir)/urcu/uatomic_arch_ at ARCHTYPE@.h $(top_builddir)/urcu/uatomic_arch.h
-
-clean-local:
-	rm -f urcu/arch.h urcu/uatomic_arch.h
diff --git a/configure.ac b/configure.ac
index c797831..4580f38 100644
--- a/configure.ac
+++ b/configure.ac
@@ -56,6 +56,8 @@ esac
 if test "$ARCHTYPE" = "unknown"; then
 	AC_MSG_ERROR([Unable to detect the architecture.])
 fi
+UATOMICSRC=urcu/uatomic_arch_$ARCHTYPE.h
+ARCHSRC=urcu/arch_$ARCHTYPE.h
 AC_SUBST(ARCHTYPE)
 AC_SUBST(SUBARCHTYPE)
 
@@ -204,6 +206,10 @@ AC_CHECK_FUNCS(
 
 CFLAGS=$saved_CFLAGS
 
+AC_CONFIG_LINKS([
+	urcu/arch.h:$ARCHSRC
+	urcu/uatomic_arch.h:$UATOMICSRC
+])
 AC_CONFIG_FILES([
 	Makefile
 	tests/Makefile
-- 
1.6.6