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The current popt build system tests the existence of <glob.h>, and then assumes that if __GLIBC__ is defined, then glob_pattern_p() must be available. Unfortunately, that's not true with uClibc: <glob.h> may be installed, but not necessarily the GNU glob extensions... and uClibc defines __GLIBC__. This is causing build issues with certain uClibc toolchains that do not have GNU glob extensions enabled. To fix this, we introduce a patch called popt-03-glob-detection.patch which adds a new AC_CHECK_FUNCS() test for glob_pattern_p() and uses the result to know if this function is available, instead of testing __GLIBC__. In order for this patch to work, the popt package must be autoreconfigured, so another patch, popt-02-fix-autoreconf.patch, is needed to make the package autoreconfigure properly. And also POPT_AUTORECONF = YES is added to popt.mk. Finally, this change avoids the need for the Blackfin toolchain specific testing, which we forgot to update when introducing the 2014R1 version of the Blackfin toolchain. With this new solution, there will be no need to update the popt.mk file when new Blackfin toolchains are added. Fixes: http://autobuild.buildroot.org/results/e09/e09e24fec240382a3197fef3e98eb9a22f76420a/ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Yuvaraj Patil <yuvaraj.patil@wipro.com> Cc: Sonic Zhang <sonic.zhang@analog.com>
To build and use the buildroot stuff, do the following:
1) run 'make menuconfig'
2) select the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) Use your shiny new root filesystem. Depending on which sort of
root filesystem you selected, you may want to loop mount it,
chroot into it, nfs mount it on your target device, burn it
to flash, or whatever is appropriate for your target system.
You do not need to be root to build or run buildroot. Have fun!
Offline build:
==============
In order to do an offline-build (not connected to the net), fetch all
selected source by issuing a
$ make source
before you disconnect.
If your build-host is never connected, then you have to copy buildroot
and your toplevel .config to a machine that has an internet-connection
and issue "make source" there, then copy the content of your dl/ dir to
the build-host.
Building out-of-tree:
=====================
Buildroot supports building out of tree with a syntax similar
to the Linux kernel. To use it, add O=<directory> to the
make command line, E.G.:
$ make O=/tmp/build
And all the output files (including .config) will be located under /tmp/build.
More finegrained configuration:
===============================
You can specify a config-file for uClibc:
$ make UCLIBC_CONFIG_FILE=/my/uClibc.config
And you can specify a config-file for busybox:
$ make BUSYBOX_CONFIG_FILE=/my/busybox.config
To use a non-standard host-compiler (if you do not have 'gcc'),
make sure that the compiler is in your PATH and that the library paths are
setup properly, if your compiler is built dynamically:
$ make HOSTCC=gcc-4.3.orig HOSTCXX=gcc-4.3-mine
Depending on your configuration, there are some targets you can use to
use menuconfig of certain packages. This includes:
$ make HOSTCC=gcc-4.3 linux-menuconfig
$ make HOSTCC=gcc-4.3 uclibc-menuconfig
$ make HOSTCC=gcc-4.3 busybox-menuconfig
Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: buildroot@buildroot.org