config TARGET_ROOTFS_ISO
bool "iso"
default n
- depends TARGET_ROOTFS_INITRAMFS && TARGET_x86
+ depends on TARGET_x86_generic
+ depends !TARGET_ROOTFS_INITRAMFS
help
Create some bootable ISO image
When this option is enabled, packages are built with the full versions of iconv and GNU gettext
instead of the default OpenWrt stubs. If uClibc is used, it is also built with locale support.
+ config BUILD_STATIC_TOOLS
+ default n
+ bool "Attempt to link host utilities statically"
+ help
+ Linking host utilities like sed or firmware-utils statically increases the portability of the
+ generated ImageBuilder and SDK tarballs, however it may fail on some Linux distributions.
+
config SHADOW_PASSWORDS
bool
prompt "Enable shadow password support"
debugging files into. Enable this option to be able to read and
write to these files.
+ config KERNEL_PERF_EVENTS
+ bool
+ default n
+
config KERNEL_PROFILING
bool "Compile the kernel with profiling enabled"
default n
+ select KERNEL_PERF_EVENTS
help
Enable the extended profiling support mechanisms used by profilers such
as OProfile.
config PKG_BUILD_PARALLEL
bool
prompt "Compile certain packages parallelized"
- default n
+ default y
help
This adds a -jX option to certain packages that are known to
- behave well for parallel build.
+ 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 this may overcommit CPU resources depending on the
+ 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.
- You get maximum build performance, if you set the package build
- jobs to the number of CPUs (cores) available and also start the main
- make process with -jX, where X is the number of CPUs (cores).
- However, make sure you have enough RAM available for
- NR_CPUS to the power of two (NR_CPUS^2) make jobs.
-
- If you are unsure, select N.
config PKG_BUILD_JOBS
int
prompt "Number of package submake jobs (2-512)"
range 2 512
default 2
- depends on PKG_BUILD_PARALLEL
+ depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
help
The number of jobs (-jX) to pass to packages submake.
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.
bool
prompt "Parallelize the toolchain build (May break build)"
depends on PKG_BUILD_PARALLEL
+ depends on BROKEN
default n
help
Build the toolchain with parallel make jobs.
Note that this will make the system libraries incompatible with most of the packages
that are not selected during the build process
+ choice
+ prompt "Preferred standard C++ library"
+ default USE_LIBSTDCXX if USE_EGLIBC
+ default USE_UCLIBCXX
+ help
+ Select the preferred standard C++ library for all packages that support this.
+
+ config USE_UCLIBCXX
+ bool "uClibc++"
+
+ config USE_LIBSTDCXX
+ bool "libstdc++"
+
+ endchoice
+
endmenu
menuconfig DEVEL