svn commit: trunk/busybox/e2fsprogs

[aldot at busybox.net]

Author: aldot
Date: 2005-10-05 03:06:11 -0700 (Wed, 05 Oct 2005)
New Revision: 11764

Log:
- Fix spurious rebuilds for (parallel) out-of-tree builds.
  Make sure that the directories are order-only prerequisites. Otherwise we
  may have object files created after the timestamp of the directory was
  updated which would lead to spurious rebuilds (as some of the dentries
  may be older than the dir itself).


Modified:
   trunk/busybox/e2fsprogs/Makefile.in


Changeset:
Modified: trunk/busybox/e2fsprogs/Makefile.in
===================================================================
--- trunk/busybox/e2fsprogs/Makefile.in	2005-10-05 08:08:07 UTC (rev 11763)
+++ trunk/busybox/e2fsprogs/Makefile.in	2005-10-05 10:06:11 UTC (rev 11764)
@@ -7,9 +7,9 @@
 E2FSPROGS_AR:=e2fsprogs.a
 
 E2FSPROGS_DIR:=$(top_builddir)/e2fsprogs
-E2FSPROGS_INC:=$(top_srcdir)/e2fsprogs
+E2FSPROGS_SRC:=$(top_srcdir)/e2fsprogs
 
-E2FSPROGS_CFLAGS := -I$(E2FSPROGS_INC) -include $(E2FSPROGS_INC)/e2fsbb.h
+E2FSPROGS_CFLAGS := -I$(E2FSPROGS_SRC) -include $(E2FSPROGS_SRC)/e2fsbb.h
 
 BLKID_SRC   := cache.c dev.c devname.c devno.c blkid_getsize.c \
 	       probe.c read.c resolve.c save.c tag.c
@@ -42,13 +42,17 @@
 # for building out-of-tree we need to make sure that the directories to hold
 # the object tree are created
 $(patsubst %,$(E2FSPROGS_DIR)/%, blkid e2fsck e2p ext2fs uuid):
-	mkdir -p "$@"
+	@mkdir -p "$@"
 
-$(patsubst %,$(E2FSPROGS_DIR)/%, $(BLKID_OBJS)):$(E2FSPROGS_DIR)/blkid
-$(patsubst %,$(E2FSPROGS_DIR)/%, $(E2FSCK_OBJS)):$(E2FSPROGS_DIR)/e2fsck
-$(patsubst %,$(E2FSPROGS_DIR)/%, $(E2P_OBJS)):$(E2FSPROGS_DIR)/e2p
-$(patsubst %,$(E2FSPROGS_DIR)/%, $(EXT2FS_OBJS)):$(E2FSPROGS_DIR)/ext2fs
-$(patsubst %,$(E2FSPROGS_DIR)/%, $(UUID_OBJS)):$(E2FSPROGS_DIR)/uuid
+# make sure that the directories are order-only prerequisites. Otherwise we
+# may have object files created after the timestamp of the directory was
+# updated which would lead to spurious rebuilds (as some of the dentries
+# may be older than the dir itself).
+$(patsubst %,$(E2FSPROGS_DIR)/%, $(BLKID_OBJS)):|$(E2FSPROGS_DIR)/blkid
+$(patsubst %,$(E2FSPROGS_DIR)/%, $(E2FSCK_OBJS)):|$(E2FSPROGS_DIR)/e2fsck
+$(patsubst %,$(E2FSPROGS_DIR)/%, $(E2P_OBJS)):|$(E2FSPROGS_DIR)/e2p
+$(patsubst %,$(E2FSPROGS_DIR)/%, $(EXT2FS_OBJS)):|$(E2FSPROGS_DIR)/ext2fs
+$(patsubst %,$(E2FSPROGS_DIR)/%, $(UUID_OBJS)):|$(E2FSPROGS_DIR)/uuid
 
 E2FSPROGS-y:=
 E2FSPROGS-$(CONFIG_CHATTR)     += chattr.o $(E2P_OBJS)