[Qemu-devel] [PATCH] Makefile: Add missing rule for config-devices.mak

[Stefan Weil]

All files config-devices.mak are copies from files in
directory default-configs.

Creating these copies during configuration ignores these
dependencies and may result in unresolved externals
from incremental builds when files in default-configs
are modified.

By adding a dependency rule to Makefile and executing
the copy commands there it is possible to run incremental
builds even with modified default-configs.

This is especially useful for git bisect.

Signed-off-by: Stefan Weil <address@hidden>
---
 Makefile  |    3 +++
 configure |    4 ----
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index d770e2a..fdb47fb 100644
--- a/Makefile
+++ b/Makefile
@@ -41,6 +41,9 @@ SUBDIR_DEVICES_MAK=$(patsubst %, %/config-devices.mak, 
$(TARGET_DIRS))
 config-all-devices.mak: $(SUBDIR_DEVICES_MAK)
        $(call quiet-command,cat $(SUBDIR_DEVICES_MAK) | grep "=y$$" | sort -u 
> $@,"  GEN   $@")
 
+%/config-devices.mak: default-configs/%.mak
+       $(call quiet-command,cp -p $< $@, "  GEN   $@")
+
 -include config-all-devices.mak
 
 build-all: $(DOCS) $(TOOLS) recurse-all
diff --git a/configure b/configure
index b65c11c..1223fc8 100755
--- a/configure
+++ b/configure
@@ -2209,10 +2209,6 @@ if test "$target" = "arm-linux-user" -o "$target" = 
"armeb-linux-user" -o "$targ
   mkdir -p $target_dir/nwfpe
 fi
 
-if test ! -f $target_dir/config-devices.mak ; then
-  cp $source_path/default-configs/${target}.mak $target_dir/config-devices.mak
-fi
-
 #
 # don't use ln -sf as not all "ln -sf" over write the file/link
 #
-- 
1.5.6.5