#! /bin/sh

set -x
date
resize
PATH='/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/bin:/opt/sbin:/opt/schplurtz/bin:/opt/schplurtz/sbin'
prefix=/opt/schplurtz
id
env | grep -v SSH
pwd
sudo opkg list_installed
sudo ipkg list_installed

test -r icu4c-49_1_2-src.tgz  || time   curl -O http://download.icu-project.org/files/icu4c/49.1.2/icu4c-49_1_2-src.tgz
test -r icu4c-49_1_2-data.zip || time : curl -O http://download.icu-project.org/files/icu4c/49.1.2/icu4c-49_1_2-data.zip

time rm -rf icu
time tar xf icu4c-49_1_2-src.tgz
cd icu
#(
#    cd source
#    time unzip -o ../../icu4c-49_1_2-data.zip
#)

set -e

# We have to patch the file icu/source/common/Makefile.in and add /opt/schplurtz/lib/linux-atomic.o in the
# dependencies of libicuuc.so . linux-atomic.o contains functions such as __sync_add_and_fetch_4
# those functions are needed. modern gcc do have those functions more or less as internal function
# The file linux-atomic.o was compiled as stated here : http://schplurtz.free.fr/wiki/private/nslu2/solve-_sync_add_and_fetch_4
# The source file was gcc-4.6.3/gcc/config/arm/linux-atomic.c in gcc-core-4.6.3.tgz archive.
# Initial ideas and solution was found here : http://vincesoft.blogspot.fr/2012/04/how-to-solve-undefined-reference-to.html
# Here is the kind of error you get if you don't patch icu/source/common/Makefile.in on an nslu2 running slugosBE 5.3
# g++ -DU_CHARSET_IS_UTF8=1 -O3 -W -Wall -ansi -pedantic -Wpointer-arith -Wwrite-strings -Wno-long-long   -o ../../bin/makeconv makeconv.o ucnvstat.o genmbcs.o gencnvex.o -L../..
# /lib -licutu -L../../lib -licui18n -L../../lib -licuuc -L../../stubdata -licudata -lpthread -ldl -lm  
# ../../lib/libicuuc.so: undefined reference to `__sync_val_compare_and_swap_4'
# ../../lib/libicuuc.so: undefined reference to `__sync_add_and_fetch_4'
# ../../lib/libicuuc.so: undefined reference to `__sync_sub_and_fetch_4'
# collect2: ld returned 1 exit status
# make[2]: *** [../../bin/makeconv] Error 1
# make[2]: Leaving directory `/home/src/icu/BUILD/tools/makeconv'
cp -a source/common/Makefile.in source/common/Makefile.in.org >/dev/null 2>&1 ||
cp    source/common/Makefile.in source/common/Makefile.in.org
sed -i -e 's,icudataver.o icuplug.o,& /opt/schplurtz/lib/linux-atomic.o,' source/common/Makefile.in
echo patched source/common/Makefile.in
ls -l source/common/Makefile*
diff -Naur source/common/Makefile.in.org source/common/Makefile.in || :


# Pour éviter ce problème :
# probleme: make[2]: Entering directory `/home/cmartin/Replicated/SOFT/nslu2/ICU/icu/BUILD/data'
# probleme: rm -rf icupkg.inc
# probleme: make[2]: Leaving directory `/home/cmartin/Replicated/SOFT/nslu2/ICU/icu/BUILD/data'
# probleme: LD_LIBRARY_PATH=../lib:../stubdata:../tools/ctestfw:$LD_LIBRARY_PATH  ../bin/icupkg -tb ../../source/data/in/icudt49l.dat ./out/icudt49b.dat
# probleme: udata_swapDataHeader(): header size mismatch - headerSize 32768 infoSize 5120 length 1024
# probleme: make[1]: *** [out/icudt49b.dat] Error 8
# probleme: make[1]: Leaving directory `/home/cmartin/Replicated/SOFT/nslu2/ICU/icu/BUILD/data'
# probleme: make: *** [all-recursive] Error 2
# probleme: Command exited with non-zero status 2
# la solution est sur cette archive de liste de compilation de TeX
# Live qui a le même problème avec une autre architecture. Le problème
# est que, ./configure détecte bien que l'architecture est BigEndian
# mais le resultat de cette detection n'est pas utilisé partout et
# d'autres parties utilisent d'autres methodes de detection du boutisme.
# Et ca foire car ces autres methodes ne connaissent pas toutes les
# combinaisons possibles de plateforme-OS (sans parler de ARM qui
# peut tourner en BE ou en LE). La solution donnee sur la liste est
# de passer CPPFLAGS=-DU_IS_BIG_ENDIAN=1 en variable d'environnement
# a l'execution de "make". Je vais plutôt essayer de mettre ces flags
# dans des fichiers. L'adresse du fil de la liste est :
# http://tug.org/pipermail/tlbuild/2012q2/thread.html#2266 Il faut
# lire tous les messages, la solution est dans le dernier.

mkdir BUILD
cd BUILD
time env \
CXXFLAGS=-DU_CHARSET_IS_UTF8=1 \
CFLAGS=-DU_CHARSET_IS_UTF8=1 \
CPPFLAGS=-DU_IS_BIG_ENDIAN=1 \
../source/runConfigureICU \
    Linux \
    --prefix="$prefix" \
    --disable-renaming 

test -r uconfig.h.prepend &&
    time sed -i -e "/^#define __UCONFIG_H__/r uconfig.h.prepend" ../source/common/unicode/uconfig.h

time make
time make check
touch NOW
sleep 2
time sudo env PATH=$PATH make install
date
find "$prefix" -newer NOW ! -type d | tar cTf - nslu2-slugosbe-icu4c-49.1.2.tar
tar tvf nslu2-slugosbe-icu4c-49.1.2.tar
date