Rename the output directories

In the output directory, we now have

 - build/    where all the packages are built
 - images/   where the final kernel and rootfs images are stored
 - staging/  the staging directory (containing the development files
             and libraries compiled for the target)
 - target/   which contains the target root filesystem
 - host/     which contains all the host programs
 - stamps/   which contains the stamps files

Therefore, the build_ARCH and toolchain_build_ARCH have been
removed. People willing to use the same Buildroot sources to compile
for different architectures are invited to use the O= command line
option for out-of-tree compilation.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Config.in

@@ -88,7 +88,7 @@ source	"target/device/Config.in.mirrors"
 
 config BR2_STAGING_DIR
 	string "Toolchain and header file location?"
-	default "$(BUILD_DIR)/staging_dir"
+	default "$(BASE_DIR)/staging"
 	help
 	  This is the location where the toolchain will be installed.  The
 	  toolchain will not work if it is moved from this location.
@@ -97,7 +97,7 @@ config BR2_STAGING_DIR
 	  will be used.
 
 	  Most people will leave this set to the default value of
-	  "$(BUILD_DIR)/staging_dir".
+	  "$(BASE_DIR)/staging".
 
 config BR2_FPU_SUFFIX
 	bool "Add '_nofpu' suffix for softfloat toolchains"

Makefile

@@ -235,20 +235,20 @@ ifeq ($(DL_DIR),)
 DL_DIR:=$(BASE_DIR)/dl
 endif
 
-BUILD_DIR:=$(BASE_DIR)/build_$(ARCH)$(ARCH_FPU_SUFFIX)
+BUILD_DIR:=$(BASE_DIR)/build
 
 GNU_TARGET_SUFFIX:=-$(call qstrip,$(BR2_GNU_TARGET_SUFFIX))
 
 STAGING_DIR:=$(call qstrip,$(BR2_STAGING_DIR))
 
 # packages compiled for the host goes here
-HOST_DIR:=$(BUILD_DIR)/host_dir
+HOST_DIR:=$(BASE_DIR)/host
 
 # stamp (dependency) files go here
-STAMP_DIR:=$(BUILD_DIR)/stamps
+STAMP_DIR:=$(BASE_DIR)/stamps
 
-BINARIES_DIR:=$(BASE_DIR)/binaries/
-TARGET_DIR:=$(BUILD_DIR)/target_dir
+BINARIES_DIR:=$(BASE_DIR)/images
+TARGET_DIR:=$(BASE_DIR)/target
 
 # define values for prepatched source trees for toolchains
 VENDOR_SITE:=$(call qstrip,$(BR2_VENDOR_SITE))

package/Makefile.in

@@ -112,7 +112,7 @@ COND_ARCH_FPU_SUFFIX:=
 endif
 
 ifeq ($(BR2_TOOLCHAIN_SOURCE),y)
-TOOL_BUILD_DIR=$(BASE_DIR)/toolchain_build_$(ARCH)$(COND_ARCH_FPU_SUFFIX)
+TOOL_BUILD_DIR=$(BASE_DIR)/toolchain
 
 # Quotes are needed for spaces et al in path components.
 TARGET_PATH="$(TOOL_BUILD_DIR)/bin:$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(STAGING_DIR)/bin:$(STAGING_DIR)/usr/bin:$(PATH)"
@@ -124,8 +124,7 @@ KERNEL_CROSS=$(TARGET_CROSS)
 else
 TOOLCHAIN_EXTERNAL_PREFIX:=$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX))
 TOOLCHAIN_EXTERNAL_PATH:=$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PATH))
-#TOOL_BUILD_DIR=$(BASE_DIR)/toolchain_build_$(TOOLCHAIN_EXTERNAL_PREFIX)
-TOOL_BUILD_DIR=$(BASE_DIR)/toolchain_build_$(ARCH)$(COND_ARCH_FPU_SUFFIX)
+TOOL_BUILD_DIR=$(BASE_DIR)/toolchain
 TARGET_PATH="$(HOST_DIR)/bin:$(HOST_DIR)/usr/bin:$(TOOL_BUILD_DIR)/bin:$(TOOLCHAIN_EXTERNAL_PATH)/bin:$(PATH)"
 #IMAGE:=$(BINARIES_DIR)/$(BR2_ROOTFS_PREFIX).$(TOOLCHAIN_EXTERNAL_PREFIX)$(ROOTFS_SUFFIX)
 IMAGE:=$(BINARIES_DIR)/$(BR2_ROOTFS_PREFIX).$(ARCH)$(COND_ARCH_FPU_SUFFIX)$(ROOTFS_SUFFIX)