How do I resolve ncurses build error in source file generated by MKlib

Stack Overflow issue “How do I resolve ncurses build error in source file generated by MKlib_gen.sh“ refers.

Thank you for your comment in directing me to your bug reporting portal – please pardon my hesitation in terms of not having used this option. I thought it might have seemed inappropriate as I believe the problem I am facing is probably of my own making rather than a bug associated with the ncurses software itself.

Following your recommendation, I have therefore outlined the issue below, by including additional info which may be useful.

Problem description

I have been tasked with upgrading to bluez-5.65.tar.gz as part of a linux development build cross-compiled for a target arm-none-linux-gnueabi processor. The build system uses the opensource Freescale GNU/Linux Target Image Builder (LTIB) tool. The build was simplified initially by dropping ‘readline’ with the --disable-client option in the bluez spec file however this comes at a cost because ‘bluetoothctl’ is consequently also excluded. Reconfiguring to include ‘readline’ leads to dependencies on other packages and in particular a number of undefined references in the package bluez build (see attached), despite the readline package building successfully.

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `tputs'

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `tgoto'

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `tgetflag'

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `UP'

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `tgetent'

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `tgetnum'

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `PC'

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `tgetstr'

/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rootfs/usr/lib//libreadline.so: undefined reference to `BC'

collect2: error: ld returned 1 exit status

make[1]: *** [Makefile:5401: client/bluetoothctl] Error 1

make[1]: *** Waiting for unfinished jobs....

Some investigation revealed that libtinfo installed as part of ncurses could resolve this. A LTIB sample ncurses spec file is provided with reference to a very early version (see attached), namely, ncurses-5.3.tar.gz. This was downloaded from the ncurses website https://invisible-island.net/ncurses/ncurses.faq.html#other_versions, along with the associated path file patch-5.3-5.4.sh.gz located here https://invisible-island.net/ncurses/ncurses.faq.html#where_patches. I was able to apply the patches successfully using the example provided on the website as a reference. It would doubtless be prudent to consider using a later version of ncurses except for the fact that I’m not very confident of deriving a corresponding spec file.

For the moment I have disabled PKG_LIBTERMCAP, though may need to revert this setting at some stage.

config PKG_NCURSES

#select PKG_LIBTERMCAP

bool "ncurses"

help

The curses library routines are a terminal-independent method of

updating character screens with reasonable optimization. The ncurses

(new curses) library is a freely distributable replacement for the

discontinued 4.4BSD classic curses library.

The build for ncurses initially generated the following error, which I resolved by setting “--with-build-cc=gcc” in the ncurses spec file, to ensure that the ‘make_keys’ is compiled using the host compiler rather than being cross-compiled for the target. A similar issue was raised here: https://lists.gnu.org/archive/html/bug-ncurses/2002-10/msg00091.html

gcc -o make_hash -DHAVE_CONFIG_H -I../ncurses -I. -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -DMAIN_PROGRAM ./tinfo/comp_hash.c

sh ./tinfo/MKcaptab.awk mawk ./../include/Caps > comp_captab.c

./tinfo/MKcaptab.awk: line 20: ./make_hash: cannot execute binary file: Exec format error

./tinfo/MKcaptab.awk: line 21: ./make_hash: cannot execute binary file: Exec format error

sh ./tty/MKexpanded.sh "gcc -E" -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG > expanded.c

sh ./tinfo/MKfallback.sh /usr/share/terminfo ../misc/terminfo.src >fallback.c

gcc -o make_keys -DHAVE_CONFIG_H -I../ncurses -I. -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 ./tinfo/make_keys.c

AWK=mawk sh ./tinfo/MKkeys_list.sh ../include/Caps | sort >keys.list

./make_keys keys.list > init_keytry.h

/bin/sh: ./make_keys: cannot execute binary file: Exec format error

make[1]: *** [Makefile:196: init_keytry.h] Error 126

make[1]: Leaving directory '/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rpm/BUILD/ncurses-5.3/ncurses'

make: *** [Makefile:96: all] Error 2

error: Bad exit status from /home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/tmp/rpm-tmp.65852 (%build)

The build for ncurses generates the following error (see attached) in the source file ../ncurses/comp_captab.c, which is in fact generated by the ncurses script MKlib_gen.sh.

+ make -j1 'HOSTCC=ccache /usr/bin/gcc -B/usr/bin/'

cd man && make DESTDIR="/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/tmp/ncurses" all

make[1]: Entering directory '/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rpm/BUILD/ncurses-5.3/man'

sh ./MKterminfo.sh ./terminfo.head ./../include/Caps ./terminfo.tail >terminfo.5

make[1]: Leaving directory '/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rpm/BUILD/ncurses-5.3/man'

cd include && make DESTDIR="/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/tmp/ncurses" all

make[1]: Entering directory '/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rpm/BUILD/ncurses-5.3/include'

cat curses.head >curses.h

AWK=mawk sh ./MKkey_defs.sh ./Caps >>curses.h

sh -c 'if test "chtype" = "cchar_t" ; then cat ./curses.wide >>curses.h ; fi'

cat ./curses.tail >>curses.h

mawk -f MKterm.h.awk ./Caps > term.h

sh ./edit_cfg.sh ../include/ncurses_cfg.h term.h

** edit: HAVE_TCGETATTR 1

** edit: HAVE_TERMIOS_H 1

** edit: HAVE_TERMIO_H 1

** edit: BROKEN_LINKER 0

make[1]: Leaving directory '/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rpm/BUILD/ncurses-5.3/include'

cd ncurses && make DESTDIR="/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/tmp/ncurses" all

make[1]: Entering directory '/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rpm/BUILD/ncurses-5.3/ncurses'

sh ./base/MKlib_gen.sh "gcc -E -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG" "mawk" generated <../include/curses.h | \

fgrep undef >../include/nomacros.h

sh ./base/MKlib_gen.sh "gcc -E -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG" "mawk" generated <../include/curses.h >lib_gen.c

sh ./base/MKlib_gen.sh "gcc -E -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG" "mawk" implemented <../include/curses.h >link_test.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./tty/hashmap.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_beep.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_color.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_endwin.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_flash.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/lib_gen.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_getstr.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_mouse.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./tty/lib_mvcur.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_newterm.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_restart.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_screen.c

../ncurses/./base/lib_screen.c: In function 'getwin':

../ncurses/./base/lib_screen.c:48:5: warning: ignoring return value of 'fread', declared with attribute warn_unused_result [-Wunused-result]

(void) fread(&tmp, sizeof(WINDOW), 1, filep);

^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

../ncurses/./base/lib_screen.c:95:6: warning: ignoring return value of 'fread', declared with attribute warn_unused_result [-Wunused-result]

(void) fread(nwin->_line[n].text,

^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

sizeof(NCURSES_CH_T),

~~~~~~~~~~~~~~~~~~~~~

(size_t) (nwin->_maxx + 1),

~~~~~~~~~~~~~~~~~~~~~~~~~~~

filep);

~~~~~~

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_set_term.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_slk.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_slkrefr.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./tty/lib_vidattr.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./tty/tty_update.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/lib_dft_fgbg.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./tinfo/lib_print.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/resizeterm.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./base/wresize.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./tinfo/alloc_entry.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/./tinfo/alloc_ttype.c

cd ../obj_s; gcc -DHAVE_CONFIG_H -I../ncurses -I. -I. -I../include -D_GNU_SOURCE -DNDEBUG -O2 -fPIC -c ../ncurses/comp_captab.c

../ncurses/comp_captab.c: In function '_nc_get_table':

../ncurses/comp_captab.c:74:19: error: '_nc_cap_table' undeclared (first use in this function)

return termcap ? _nc_cap_table: _nc_info_table ;

^~~~~~~~~~~~~

../ncurses/comp_captab.c:74:19: note: each undeclared identifier is reported only once for each function it appears in

../ncurses/comp_captab.c:74:34: error: '_nc_info_table' undeclared (first use in this function)

return termcap ? _nc_cap_table: _nc_info_table ;

^~~~~~~~~~~~~~

make[1]: *** [Makefile:974: ../obj_s/comp_captab.o] Error 1

make[1]: Leaving directory '/home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/rpm/BUILD/ncurses-5.3/ncurses'

make: *** [Makefile:96: all] Error 2

error: Bad exit status from /home/pgroves/workspace/RELEASE5301.orig/Eagle-Ltib/tmp/rpm-tmp.48770 (%build)

To summarize, I was expecting ncurses to build successfully, hopefully to resolve my linker error associated with the bluez-5.65 package. I wasn't expecting the build to fail for a file generated by the ncurses script.

How may I resolve this issue please? I do anticipate further ncurses package dependencies that may still be required in order to ultimately generate a ‘bluetoolctl’ executable file.

Thanking you.

Kind Regards.

Peter Groves

From:	Peter Groves
Subject:	How do I resolve ncurses build error in source file generated by MKlib_gen.sh
Date:	Thu, 29 Aug 2024 12:36:44 +0000