[root@dbserver asterisk-addons]# make clean;make install
rm -f *.so *.o .depend
make -C format_mp3 clean
make[1]: Entering directory `/usr/src/asterisk/clean/asterisk-addons/format_mp3'
rm -f *.o *.so *~
make[1]: Leaving directory `/usr/src/asterisk/clean/asterisk-addons/format_mp3'
./mkdep -fPIC -I../asterisk -D_GNU_SOURCE  -I/usr/include/mysql -I/usr/local/include/mysql  `ls *.c`
cdr_addon_mysql.c:24:22: asterisk.h: No such file or directory
make -C format_mp3 all
make[1]: Entering directory `/usr/src/asterisk/clean/asterisk-addons/format_mp3'
gcc -pipe -fPIC -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -D_REENTRANT -D_GNU_SOURCE  -O6    -c -o common.o common.c
gcc -pipe -fPIC -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -D_REENTRANT -D_GNU_SOURCE  -O6    -c -o dct64_i386.o dct64_i386.c
gcc -pipe -fPIC -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -D_REENTRANT -D_GNU_SOURCE  -O6    -c -o decode_ntom.o decode_ntom.c
gcc -pipe -fPIC -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -D_REENTRANT -D_GNU_SOURCE  -O6    -c -o layer3.o layer3.c
gcc -pipe -fPIC -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -D_REENTRANT -D_GNU_SOURCE  -O6    -c -o tabinit.o tabinit.c
gcc -pipe -fPIC -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -D_REENTRANT -D_GNU_SOURCE  -O6    -c -o interface.o interface.c
gcc -pipe -fPIC -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -D_REENTRANT -D_GNU_SOURCE  -O6    -c -o format_mp3.o format_mp3.c
gcc -pipe -fPIC -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations   -D_REENTRANT -D_GNU_SOURCE  -O6  -shared -Xlinker -x -o format_mp3.so common.o dct64_i386.o decode_ntom.o layer3.o tabinit.o interface.o format_mp3.o
make[1]: Leaving directory `/usr/src/asterisk/clean/asterisk-addons/format_mp3'
cc -fPIC -I../asterisk -D_GNU_SOURCE  -I/usr/include/mysql -I/usr/local/include/mysql    -c -o app_saycountpl.o app_saycountpl.c
cc -shared -Xlinker -x -o app_saycountpl.so app_saycountpl.o
cc -fPIC -I../asterisk -D_GNU_SOURCE  -I/usr/include/mysql -I/usr/local/include/mysql    -c -o cdr_addon_mysql.o cdr_addon_mysql.c
cdr_addon_mysql.c:24:22: asterisk.h: No such file or directory
make: *** [cdr_addon_mysql.o] Error 1
rm app_saycountpl.o
[root@dbserver asterisk-addons]#

a fix for this is described in this <a href="http://www.spiration.co.uk/post/1218">asterisk addons build</a> article