removing ancient libosmocore fork from osmocom-bb.git

[Craig Comstock]

Looks like in package libnewlib-dev for stretch (unstable) we have sys/select.h but in jessie (stable) it is not included.

https://packages.debian.org/stretch/libnewlib-dev
https://packages.debian.org/jessie/libnewlib-dev

craig at box:~/libosmocore$ ./configure --prefix=/usr/local/arm-none-eabi --host=arm-none-eabi --enable-embedded --disable-shared CFLAGS="-Os -ffunction-sections -fdata-sections -nostartfiles -nodefaultlibs"
craig at box:~/libosmocore$ make

make  all-recursive
make[1]: Entering directory '/home/craig/libosmocore'
Making all in include
make[2]: Entering directory '/home/craig/libosmocore/include'
make  all-am
make[3]: Entering directory '/home/craig/libosmocore/include'
make[3]: Nothing to be done for 'all-am'.
make[3]: Leaving directory '/home/craig/libosmocore/include'
make[2]: Leaving directory '/home/craig/libosmocore/include'
Making all in src
make[2]: Entering directory '/home/craig/libosmocore/src'
make  all-am
make[3]: Entering directory '/home/craig/libosmocore/src'
  CC       select.lo
select.c:27:24: fatal error: sys/select.h: No such file or directory
 #include <sys/select.h>
                        ^
compilation terminated.
Makefile:510: recipe for target 'select.lo' failed
make[3]: *** [select.lo] Error 1
make[3]: Leaving directory '/home/craig/libosmocore/src'
Makefile:373: recipe for target 'all' failed
make[2]: *** [all] Error 2
make[2]: Leaving directory '/home/craig/libosmocore/src'
Makefile:519: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/craig/libosmocore'
Makefile:382: recipe for target 'all' failed
make: *** [all] Error 2
   


--------------------------------------------
On Tue, 5/16/17, Harald Welte <laforge at gnumonks.org> wrote:

 Subject: removing ancient libosmocore fork from osmocom-bb.git
 To: baseband-devel at lists.osmocom.org
 Date: Tuesday, May 16, 2017, 11:18 AM
 
 Dear all,
 
 when we initially crated OsmocomBB, we moved the code that
 it shared
 with the pre-existing OpenBSC project into libosmocore.git,
 where
 libosmocore and libosmogsm are built.  As libosmocore
 was quite a bit in
 flux (and we didn't have jenkins+gerrit yet), we decided to
 have a local
 clone of libosmocore.git as a git-subtree module inside
 osmocom-bb.git
 
 Meanwhile, upstream libosmocore received more and more code,
 and none
 of that was ever built with an 'arm-non-eabi' toolchain and
 --enable-embedded.
 
 I've been working quite a bit during the last week on making
 that
 embedded build work again.
 
 The idea is to be able to configure + build libosmocore.git
 master using
 something like 
 
 ./configure   
 --prefix=/usr/local/arm-none-eabi \
          --host=arm-none-eabi
 \
         --enable-embedded \
         --disable-shared \
         CFLAGS="-Os
 -ffunction-sections -fdata-sections -nostartfiles
 -nodefaultlibs"
 
 and then install it onto the host pc.  I've used
 /usr/local/arm-none-eabi as the prefix, but it could of
 course be
 anywhere.
 
 The above already works for me on Debian unstable using
 libosmocore.git
 master. I have some patches pending in laforge/sercomm and
 laforge/pseudotalloc, but those are not mandatory to make
 the build work
 
 The local clone of libosmocore in OsmocomBB
 src/shared/libosmocore will
 be removed, and the Makefiles of osmocom-bb instructed to
 use the
 system-installed libosmocore from /usr/local/arm-none-eabi
 (see my
 'laforge/remove-libosmocore' branch in).  This also
 already "works" on
 my Debian unstable system, in as far as there are no
 unresolved symbols
 or other compilation/linking issues, and the firmware images
 are
 generated.  I have not tested any of the resulting
 binaries yet, and as
 I'm travelling without compatible hardware (and overloaded),
 it's
 unlikely that I'll be able to test it soon.
 
 Nevertheless, this is what I would like to move to.  If
 anyone wants to
 try if he can build the embedded libosmocore and resulting
 osmocom-bb
 from laforge/remove-libosmocore branch, please do so and
 report your
 progress/success/issues here.
 
 Next steps (after validating the above) are:
 * remove old sercomm.c code from osmocom-bb and use the new
 code from
   libosmocore
 * remove 'talloc emulation' from osmocom-bb and use
 pseudotalloc from
   libosmocore.git (plus an embedded 'malloc' like
 umm_malloc)
 
 Further ideas:
 * create Debian/Ubuntu package of cross-compiled libosmocore
 for
   embedded-arm, which we can add to the Osmocom nightly
 builds apt
   repository.
 * have an (optional?) osmocom-bb makefile step to git clone
 + configure
   + make install libosmocore
 
 Anyone interested in helping out with this, please feel free
 to join in.
 
 Regards,
     Harald
 -- 
 - Harald Welte <laforge at gnumonks.org> 
          http://laforge.gnumonks.org/
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