Some toolchains used in Buildroot (x86-64 and mips64) have a problem to compile
a set of object files into one object file as it is done for the
`builtin-target` declared in swupdate's Kbuild Makefile.build. This target
collects all object files from every subdirectory declared in `objs-dir` and
compiles them into a single object file named `build-in.o` using the linker ld.
For the addressed toolchains the default emulation of ld is not the correct one
leading to different kind of relocation errors:
/usr/bin/i686-pc-linux-gnu-ld: Relocatable linking with relocations from
format elf64-x86-64 (core/swupdate.o) to format elf32-i386 (core/built-in.o)
is not supported.
or
/usr/bin/mips-linux-gnu-ld: handlers/raw_handler.o: endianness incompatible
with that of the selected emulation
or
/usr/bin/mips64el-linux-ld: core/swupdate.o: ABI is incompatible with that
of the selected
As there is no need to have single object file `built-in.o` to be compiled for
the subdirectories core and handlers we can easily allow swupdate to be built
with these toolchains by compiling the source files from core and handlers with
the `lib-target` target by assigning them to the `libs-y` variable as it is done
for all other subdirectories. The `lib-target` compiles a set of object files
into one archive file. With this target we avoid using the ld linker and use the
ar archiver instead.
Add a patch from upstream to fix a whole bunch of autobuild errors.
Fixes:
http://autobuild.buildroot.net/results/de9/
de920298075d32f3de83a0cfb7417846eb833425/
http://autobuild.buildroot.net/results/975/
975915aa33005806e78260bae385cd4b3e359ca8/
http://autobuild.buildroot.net/results/c54/
c54e7a2ea353d95d41a1e966de0dffa7b6ac432e/
http://autobuild.buildroot.net/results/019/
0198596ebfed05ab86552b628da2274d55bf42ae/
and many more.
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
# Locally calculated
sha256 1410f8967aad0f4d3b4561110dbfb2c1f8e337bdc332f6b120f4995762c8bf6b swupdate-2015.07.tar.gz
+sha256 ec633171e6a893506fad6b96fb2b258d60a023c03be5520b968a1d5cc6bafe6e c3467290925b2a833a68d9db12c198fdca752e32.patch
SWUPDATE_SITE = $(call github,sbabic,swupdate,$(SWUPDATE_VERSION))
SWUPDATE_LICENSE = GPLv2+, MIT, Public Domain
SWUPDATE_LICENSE_FILES = COPYING
+SWUPDATE_PATCH = https://github.com/sbabic/swupdate/commit/c3467290925b2a833a68d9db12c198fdca752e32.patch
# swupdate bundles its own version of mongoose (version 3.8) and
# lsqlite3 (version 0.8)