From fde498904f0a4b9fc51902d687b4590c99870e6b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20B=C3=BCsch?= <mb@bu3sch.de>
Date: Fri, 20 Aug 2010 14:48:59 +0000
Subject: [PATCH] Add an option to default the default build rule to parallel
 build.

SVN-Revision: 22737
---
 Config.in             | 14 ++++++++++++++
 include/host-build.mk |  2 +-
 include/package.mk    |  2 +-
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/Config.in b/Config.in
index 85d3adf9fd..c750a25330 100644
--- a/Config.in
+++ b/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
diff --git a/include/host-build.mk b/include/host-build.mk
index acb7f6bbdf..4fd6587aec 100644
--- a/include/host-build.mk
+++ b/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
diff --git a/include/package.mk b/include/package.mk
index fd53123f61..a07d875f8c 100644
--- a/include/package.mk
+++ b/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