darling-gdb/sim/erc32/configure.ac
Mike Frysinger b909d38dfa sim: erc32: fix linking against local readline on modern (ncurses) systems
The current erc32 configure script only searches for -ltermcap to provide
any termcap funcs (which readlines needs).  When building against a local
readline (which is static), we hit link failures like so:
  gcc ...-I/-D flags... -o sis \
    sis.o exec.o erc32.o func.o help.o float.o \
    ../../bfd/libbfd.a ../../opcodes/libopcodes.a \
    ../../libiberty/libiberty.a -lz -lnsl \
    ../../readline/libreadline.a -lm
  ../../readline/libreadline.a(display.o): In function 'cr':
  .../readline/display.c:2486: undefined reference to 'tputs'
  collect2: ld returned 1 exit status
  make[2]: *** [sis] Error 1

Use AC_SEARCH_LIBS from gdb's configure.ac as suggested by Joel Brobecker
to check for additional termcap providers.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2011-12-31 07:06:47 +00:00

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dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.64)dnl
AC_INIT(Makefile.in)
sinclude(../common/acinclude.m4)
SIM_AC_COMMON
AC_CHECK_HEADERS(stdlib.h)
# In the Cygwin environment, we need some additional flags.
AC_CACHE_CHECK([for cygwin], sim_cv_os_cygwin,
[AC_EGREP_CPP(lose, [
#ifdef __CYGWIN__
lose
#endif],[sim_cv_os_cygwin=yes],[sim_cv_os_cygwin=no])])
if test x$sim_cv_os_cygwin = xyes; then
TERMCAP='`if test -r ../../libtermcap/libtermcap.a; then echo ../../libtermcap/libtermcap.a; else echo -ltermcap; fi` -luser32'
else
# Keep in sync with gdb's configure.ac list.
AC_SEARCH_LIBS(tgetent, [termcap tinfo curses ncurses],
[TERMCAP=$ac_cv_search_tgetent], [TERMCAP=""])
fi
AC_SUBST(TERMCAP)
# We prefer the in-tree readline. Top-level dependencies make sure
# src/readline (if it's there) is configured before src/sim.
if test -r ../../readline/Makefile; then
READLINE=../../readline/libreadline.a
else
AC_CHECK_LIB(readline, readline, READLINE=-lreadline,
AC_ERROR([the required "readline" library is missing]), $TERMCAP)
fi
AC_SUBST(READLINE)
SIM_AC_OUTPUT