[source] build: remove obsolete parallel build related options

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/1e1d735e5213dac7c582304f58da674714f6aade

commit 1e1d735e5213dac7c582304f58da674714f6aade
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Fri Jan 6 00:28:51 2017 +0100

    build: remove obsolete parallel build related options
    
    Always use the main make jobserver, which has been the default for ages
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 config/Config-build.in | 53 --------------------------------------------------
 include/host-build.mk  |  9 ++-------
 include/image.mk       |  2 +-
 include/package.mk     |  9 ++-------
 4 files changed, 5 insertions(+), 68 deletions(-)

diff --git a/config/Config-build.in b/config/Config-build.in
index 7c82e8b..9b8e4b2 100644
--- a/config/Config-build.in
+++ b/config/Config-build.in
@@ -87,59 +87,6 @@ menu "Global build settings"
 		help
 		  Enables IPv6 support in kernel (builtin) and packages.
 
-	config PKG_BUILD_PARALLEL
-		bool
-		prompt "Compile certain packages parallelized"
-		default y
-		help
-		  This adds a -jX option to certain packages that are known to behave well
-		  for parallel build. By default, the package make processes use the main
-		  jobserver, in which case this option only takes effect when you add -jX
-		  to the make command.
-
-		  If you are unsure, select N.
-
-	config PKG_BUILD_USE_JOBSERVER
-		bool
-		prompt "Use top-level make jobserver for packages"
-		depends on PKG_BUILD_PARALLEL
-		default y
-		help
-		  This passes the main make process jobserver fds to package builds,
-		  enabling full parallelization across different packages.
-
-		  Note that disabling this may overcommit CPU resources depending on the
-		  -j level of the main make process, the number of package submake jobs
-		  selected below and the number of actual CPUs present.
-		  Example: If the main make is passed a -j4 and the submake -j
-		  is also set to 4, we may end up with 16 parallel make processes
-		  in the worst case.
-
-	config PKG_BUILD_JOBS
-		int
-		prompt "Number of package submake jobs (2-512)"
-		range 2 512
-		default 2
-		depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
-		help
-		  The number of jobs (-jX) to pass to packages submake.
-
-	config PKG_DEFAULT_PARALLEL
-		bool
-		prompt "Parallelize the default package build rule (May break build)"
-		depends on PKG_BUILD_PARALLEL
-		depends on BROKEN
-		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.
-
-		  Only say Y if you don't mind fixing broken packages.  Before reporting
-		  build bugs, set this to N and re-run the build.
-
 	comment "Stripping options"
 
 	choice
diff --git a/include/host-build.mk b/include/host-build.mk
index b2f017b..4b4ffe4 100644
--- a/include/host-build.mk
+++ b/include/host-build.mk
@@ -11,17 +11,12 @@ HOST_BUILD_DIR ?= $(BUILD_DIR_HOST)/$(PKG_NAME)$(if $(PKG_VERSION),-$(PKG_VERSIO
 HOST_INSTALL_DIR ?= $(HOST_BUILD_DIR)/host-install
 HOST_BUILD_PARALLEL ?=
 
-ifneq ($(CONFIG_PKG_BUILD_USE_JOBSERVER),)
-  HOST_MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j))
-else
-  HOST_MAKE_J:=-j$(CONFIG_PKG_BUILD_JOBS)
-endif
+HOST_MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j))
 
 ifeq ($(strip $(HOST_BUILD_PARALLEL)),0)
 HOST_JOBS?=-j1
 else
-HOST_JOBS?=$(if $(HOST_BUILD_PARALLEL)$(CONFIG_PKG_DEFAULT_PARALLEL),\
-	$(if $(CONFIG_PKG_BUILD_PARALLEL),$(HOST_MAKE_J),-j1),-j1)
+HOST_JOBS?=$(if $(HOST_BUILD_PARALLEL),$(HOST_MAKE_J),-j1)
 endif
 
 include $(INCLUDE_DIR)/host.mk
diff --git a/include/image.mk b/include/image.mk
index ed96851..3daee35 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -197,7 +197,7 @@ define Image/mkfs/squashfs
 	$(STAGING_DIR_HOST)/bin/mksquashfs4 $(call mkfs_target_dir,$(1)) $@ \
 		-nopad -noappend -root-owned \
 		-comp $(SQUASHFSCOMP) $(SQUASHFSOPT) \
-		-processors $(if $(CONFIG_PKG_BUILD_JOBS),$(CONFIG_PKG_BUILD_JOBS),1) \
+		-processors 1 \
 		$(if $(SOURCE_DATE_EPOCH),-fixed-time $(SOURCE_DATE_EPOCH))
 endef
 
diff --git a/include/package.mk b/include/package.mk
index 41401dd..3248517 100644
--- a/include/package.mk
+++ b/include/package.mk
@@ -17,17 +17,12 @@ PKG_BUILD_PARALLEL ?=
 PKG_USE_MIPS16 ?= 1
 PKG_IREMAP ?= 1
 
-ifneq ($(CONFIG_PKG_BUILD_USE_JOBSERVER),)
-  MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j))
-else
-  MAKE_J:=-j$(CONFIG_PKG_BUILD_JOBS)
-endif
+MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j))
 
 ifeq ($(strip $(PKG_BUILD_PARALLEL)),0)
 PKG_JOBS?=-j1
 else
-PKG_JOBS?=$(if $(PKG_BUILD_PARALLEL)$(CONFIG_PKG_DEFAULT_PARALLEL),\
-	$(if $(CONFIG_PKG_BUILD_PARALLEL),$(MAKE_J),-j1),-j1)
+PKG_JOBS?=$(if $(PKG_BUILD_PARALLEL),$(MAKE_J),-j1)
 endif
 ifdef CONFIG_USE_MIPS16
   ifeq ($(strip $(PKG_USE_MIPS16)),1)