Add an option to default the default build rule to parallel build.

SVN-Revision: 22737

Config.in

@@ -247,6 +247,20 @@ menu "Global build settings"
 		help
 		  The number of jobs (-jX) to pass to packages submake.
 
+	config PKG_DEFAULT_PARALLEL
+		bool
+		prompt "Always parallelize the default package build rule (Dangerous)"
+		depends on PKG_BUILD_PARALLEL
+		default n
+		help
+		  Always set the default package build rules to parallel build.
+
+		  WARNING: This may break build or kill your cat, as it builds
+		  packages with multiple jobs that are probably not tested in
+		  a parallel build environment.
+
+		  Say N. Only say Y for testing.
+
 	comment "Stripping options"
 
 	choice

include/host-build.mk

@@ -8,7 +8,7 @@
 HOST_BUILD_DIR ?= $(BUILD_DIR_HOST)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
 HOST_INSTALL_DIR ?= $(HOST_BUILD_DIR)/host-install
 HOST_BUILD_PARALLEL ?=
-HOST_JOBS ?= $(if $(HOST_BUILD_PARALLEL),$(if $(CONFIG_PKG_BUILD_PARALLEL),-j$(CONFIG_PKG_BUILD_JOBS)))
+HOST_JOBS ?= $(if $(HOST_BUILD_PARALLEL)$(CONFIG_PKG_DEFAULT_PARALLEL),$(if $(CONFIG_PKG_BUILD_PARALLEL),-j$(CONFIG_PKG_BUILD_JOBS)))
 
 include $(INCLUDE_DIR)/host.mk
 include $(INCLUDE_DIR)/unpack.mk

include/package.mk

@@ -11,7 +11,7 @@ PKG_BUILD_DIR ?= $(BUILD_DIR)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSION))
 PKG_INSTALL_DIR ?= $(PKG_BUILD_DIR)/ipkg-install
 PKG_MD5SUM ?= unknown
 PKG_BUILD_PARALLEL ?=
-PKG_JOBS ?= $(if $(PKG_BUILD_PARALLEL),$(if $(CONFIG_PKG_BUILD_PARALLEL),-j$(CONFIG_PKG_BUILD_JOBS)))
+PKG_JOBS ?= $(if $(PKG_BUILD_PARALLEL)$(CONFIG_PKG_DEFAULT_PARALLEL),$(if $(CONFIG_PKG_BUILD_PARALLEL),-j$(CONFIG_PKG_BUILD_JOBS)))
 
 include $(INCLUDE_DIR)/prereq.mk
 include $(INCLUDE_DIR)/host.mk