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Since3341ceb1e5(package/gdb: zlib is mandatory, not optional), zlib has become a mandatory dependencies of the gdb package. However, zlib is only needed for the debugger, gdb itself, while the server, gdbserver, does not use it. This means that, when building an SDK to be later reused as an external toolchain, the zlib headers and libraries are present in the sysroot of the toolchain, tainting the toolchain and making it unsuitable to be reused. As Julien noticed, for example, tcl will try and link with zlib if available, and at build time it is. But at runtime, it is not, and thus tclsh fails to run; see7af8dee3a8(package/tcl: add mandatory dependency to zlib) When we only need to build gdbserver, we still need to configure and build the whole gdb distribution, which means we call the top-level configure script; that script has no option to disable the detection of zlib: it wants to either use a system one, or it will build the bundled one. So, when we only build gdbserver, we tell configure to not use a system zlib. This triggers the build of the bundled one, but it is not linked with gdbserver so in the end it is not used on the target. Reported-by: Julien Olivain <ju.o@free.fr> Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr> Cc: Fabrice Fontaine <fontaine.fabrice@gmail.com> Signed-off-by: Arnout Vandecappelle <arnout@mind.be> (cherry picked from commit8ce33fed49) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches