[Buildroot] [PATCH 2 of 3 v2] uclibc: menuconfig: take into account initial settings from config file

[Thomas De Schampheleire]

When executing the sequence 'make clean uclibc-menuconfig', the configured
config file is not taken into account and one starts from the default
settings.

This patch adds an explicit target for the config file and lets the
configure and menuconfig steps depend on it, fixing the problem.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire at gmail.com>

---
v2:
- use UCLIBC_TARGET_CONFIGURE instead of specifying the stamp path in full
  (Arnout)
rfc->patch:
- add target for .config to avoid menuconfig copying the config file
  every time (ThomasP, Arnout)
- move dependency on patch step from menuconfig to the .config target

 package/uclibc/uclibc.mk |  12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)

diff -r 9634175cf29d -r a22b18c9a90d package/uclibc/uclibc.mk
--- a/package/uclibc/uclibc.mk	Wed Jul 02 21:31:07 2014 +0200
+++ b/package/uclibc/uclibc.mk	Sun Jun 22 10:37:22 2014 +0200
@@ -394,7 +394,6 @@
 	HOSTCC="$(HOSTCC)"
 
 define UCLIBC_FIXUP_DOT_CONFIG
-	$(INSTALL) -m 0644 $(UCLIBC_CONFIG_FILE) $(@D)/.config
 	$(call KCONFIG_SET_OPT,CROSS_COMPILER_PREFIX,"$(TARGET_CROSS)",$(@D)/.config)
 	$(call KCONFIG_ENABLE_OPT,TARGET_$(UCLIBC_TARGET_ARCH),$(@D)/.config)
 	$(call KCONFIG_SET_OPT,TARGET_ARCH,"$(UCLIBC_TARGET_ARCH)",$(@D)/.config)
@@ -533,7 +532,14 @@
 	$(UCLIBC_INSTALL_UTILS_STAGING)
 endef
 
-uclibc-menuconfig: uclibc-patch
+$(eval $(generic-package))
+
+$(UCLIBC_DIR)/.config: $(UCLIBC_CONFIG_FILE) | uclibc-patch
+	$(INSTALL) -m 0644 $(UCLIBC_CONFIG_FILE) $(UCLIBC_DIR)/.config
+
+$(UCLIBC_TARGET_CONFIGURE): $(UCLIBC_DIR)/.config
+
+uclibc-menuconfig: $(UCLIBC_DIR)/.config
 	$(MAKE1) -C $(UCLIBC_DIR) \
 		$(UCLIBC_MAKE_FLAGS) \
 		PREFIX=$(STAGING_DIR) \
@@ -542,8 +548,6 @@
 		menuconfig
 	rm -f $(UCLIBC_DIR)/.stamp_{configured,built,target_installed,staging_installed}
 
-$(eval $(generic-package))
-
 uclibc-update-config: $(UCLIBC_DIR)/.stamp_configured
 	cp -f $(UCLIBC_DIR)/.config $(UCLIBC_CONFIG_FILE)