Build of isdn4k-utils with vanilla toolchain

# [tuscan]
# Server = file:///var/cache/pacman/pkg/

# :: Synchronizing package databases...
# downloading tuscan.db...

# ==> Making package: isdn4k-utils 3.27-2 (Wed Aug 24 13:37:01 UTC 2016)
# ==> Checking runtime dependencies...
# ==> Checking buildtime dependencies...
# ==> WARNING: Using existing $srcdir/ tree
# ==> Starting build()...
# make[1]: Entering directory '/tmp/isdn4k-utils/src/isdn4k-utils/scripts/lxdialog'
# gcc -O2 -Wall -fomit-frame-pointer -DLOCALE -DCURSES_LOC="" -c -o lxdialog.o lxdialog.c
# lxdialog.c: In function 'j_inputbox':
# lxdialog.c:225:15: warning: pointer targets in passing argument 1 of 'fputs' differ in signedness [-Wpointer-sign]
# fputs(escaped_result, stderr);
# ^~~~~~~~~~~~~~
# In file included from /usr/include/curses.h:164:0,
# from dialog.h:29,
# from lxdialog.c:22:
# /usr/include/stdio.h:689:12: note: expected 'const char * restrict' but argument is of type 'unsigned char *'
# extern int fputs (const char *__restrict __s, FILE *__restrict __stream);
# ^~~~~
# gcc -O2 -Wall -fomit-frame-pointer -DLOCALE -DCURSES_LOC="" -c -o checklist.o checklist.c
# gcc -O2 -Wall -fomit-frame-pointer -DLOCALE -DCURSES_LOC="" -c -o menubox.o menubox.c
# gcc -O2 -Wall -fomit-frame-pointer -DLOCALE -DCURSES_LOC="" -c -o textbox.o textbox.c
# textbox.c: In function 'dialog_textbox':
# textbox.c:42:10: warning: variable 'search_term' set but not used [-Wunused-but-set-variable]
# char search_term[MAX_LEN + 1];
# ^~~~~~~~~~~
# textbox.c: In function 'print_line':
# textbox.c:451:12: warning: variable 'y' set but not used [-Wunused-but-set-variable]
# int i, y, x;
# ^
# gcc -O2 -Wall -fomit-frame-pointer -DLOCALE -DCURSES_LOC="" -c -o yesno.o yesno.c
# gcc -O2 -Wall -fomit-frame-pointer -DLOCALE -DCURSES_LOC="" -c -o inputbox.o inputbox.c
# inputbox.c: In function 'dialog_inputbox':
# inputbox.c:100:10: warning: pointer targets in passing argument 1 of 'strcpy' differ in signedness [-Wpointer-sign]
# strcpy (instr, init);
# ^~~~~
# In file included from dialog.h:27:0,
# from inputbox.c:22:
# /usr/include/string.h:125:14: note: expected 'char * restrict' but argument is of type 'unsigned char *'
# extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
# ^~~~~~
# inputbox.c:102:23: warning: pointer targets in passing argument 1 of 'strlen' differ in signedness [-Wpointer-sign]
# input_x = strlen (instr);
# ^~~~~
# In file included from dialog.h:27:0,
# from inputbox.c:22:
# /usr/include/string.h:394:15: note: expected 'const char *' but argument is of type 'unsigned char *'
# extern size_t strlen (const char *__s)
# ^~~~~~
# In file included from dialog.h:29:0,
# from inputbox.c:22:
# inputbox.c:110:19: warning: pointer targets in passing argument 2 of 'waddnstr' differ in signedness [-Wpointer-sign]
# waddstr (dialog, instr);
# ^
# /usr/include/curses.h:795:28: note: expected 'const char *' but argument is of type 'unsigned char *'
# extern NCURSES_EXPORT(int) waddnstr (WINDOW *,const char *,int); /* implemented */
# ^~~~~~~~
# inputbox.c:140:22: warning: pointer targets in passing argument 1 of 'strlen' differ in signedness [-Wpointer-sign]
# input_x = strlen (instr) - scroll;
# ^~~~~
# In file included from dialog.h:27:0,
# from inputbox.c:22:
# /usr/include/string.h:394:15: note: expected 'const char *' but argument is of type 'unsigned char *'
# extern size_t strlen (const char *__s)
# ^~~~~~
# inputbox.c:234:16: warning: pointer targets in passing argument 1 of 'strcpy' differ in signedness [-Wpointer-sign]
# strcpy (instr, init);
# ^~~~~
# In file included from dialog.h:27:0,
# from inputbox.c:22:
# /usr/include/string.h:125:14: note: expected 'char * restrict' but argument is of type 'unsigned char *'
# extern char *strcpy (char *__restrict __dest, const char *__restrict __src)
# ^~~~~~
# inputbox.c:233:10: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
# else
# ^~~~
# inputbox.c:235:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else'
# button = 0;
# ^~~~~~
# gcc -O2 -Wall -fomit-frame-pointer -DLOCALE -DCURSES_LOC="" -c -o util.o util.c
# gcc -O2 -Wall -fomit-frame-pointer -DLOCALE -DCURSES_LOC="" -c -o msgbox.o msgbox.c
# gcc -s -L . lxdialog.o checklist.o menubox.o textbox.o yesno.o inputbox.o util.o msgbox.o -lncurses -o lxdialog
# make[1]: Leaving directory '/tmp/isdn4k-utils/src/isdn4k-utils/scripts/lxdialog'
# #
# # Using defaults found in scripts/defconfig
# #
# Error opening terminal: unknown.
# Error opening terminal: unknown.
# 'unknown': I need something more specific.
# Your configuration changes were NOT saved.
#
# make -f Makefile.tmp subconfig
# make[1]: Entering directory '/tmp/isdn4k-utils/src/isdn4k-utils'
# make[1]: *** No rule to make target '.config', needed by 'scripts/autoconf.h'. Stop.
# make[1]: Leaving directory '/tmp/isdn4k-utils/src/isdn4k-utils'
# make: *** [Makefile:222: menuconfig] Error 2
# ==> ERROR: A failure occurred in build().
# Aborting...