+# Enable MI.
+AC_ARG_ENABLE(gdbmi,
+[ --disable-gdbmi disable machine-interface (MI)],
+ [case $enableval in
+ yes | no)
+ ;;
+ *)
+ AC_MSG_ERROR([bad value $enableval for --enable-gdbmi]) ;;
+ esac],
+ [enable_gdbmi=yes])
+if test x"$enable_gdbmi" = xyes; then
+ if test -d $srcdir/mi; then
+ CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_MI_OBS)"
+ CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_MI_DEPS)"
+ CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_MI_SRCS)"
+ CONFIG_INITS="$CONFIG_INITS \$(SUBDIR_MI_INITS)"
+ ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_MI_CFLAGS)"
+ CONFIG_ALL="$CONFIG_ALL \$(SUBDIR_MI_ALL)"
+ CONFIG_CLEAN="$CONFIG_CLEAN \$(SUBDIR_MI_CLEAN)"
+ CONFIG_INSTALL="$CONFIG_INSTALL \$(SUBDIR_MI_INSTALL)"
+ CONFIG_UNINSTALL="$CONFIG_UNINSTALL \$(SUBDIR_MI_UNINSTALL)"
+ fi
+fi
+
+# Enable TUI.
+AC_ARG_ENABLE(tui,
+[ --enable-tui enable full-screen terminal user interface (TUI)],
+ [case $enableval in
+ yes | no)
+ ;;
+ *)
+ AC_MSG_ERROR([bad value $enableval for --enable-tui]) ;;
+ esac])
+if test x"$enable_tui" = xyes; then
+ if test -d $srcdir/tui; then
+ CONFIG_OBS="$CONFIG_OBS \$(SUBDIR_TUI_OBS)"
+ CONFIG_DEPS="$CONFIG_DEPS \$(SUBDIR_TUI_DEPS)"
+ CONFIG_SRCS="$CONFIG_SRCS \$(SUBDIR_TUI_SRCS)"
+ CONFIG_INITS="$CONFIG_INITS \$(SUBDIR_TUI_INITS)"
+ ENABLE_CFLAGS="$ENABLE_CFLAGS \$(SUBDIR_TUI_CFLAGS)"
+ CONFIG_ALL="$CONFIG_ALL \$(SUBDIR_TUI_ALL)"
+ CONFIG_CLEAN="$CONFIG_CLEAN \$(SUBDIR_TUI_CLEAN)"
+ CONFIG_INSTALL="$CONFIG_INSTALL \$(SUBDIR_TUI_INSTALL)"
+ CONFIG_UNINSTALL="$CONFIG_UNINSTALL \$(SUBDIR_TUI_UNINSTALL)"
+ need_curses=yes
+ fi
+fi
+
+# Enable gdbtk.
+AC_ARG_ENABLE(gdbtk,
+[ --enable-gdbtk enable gdbtk graphical user interface (GUI)],
+ [case $enableval in
+ yes | no)
+ ;;
+ *)
+ AC_MSG_ERROR([bad value $enableval for --enable-gdbtk]) ;;
+ esac],
+ [if test -d $srcdir/gdbtk; then
+ enable_gdbtk=yes
+ else
+ enable_gdbtk=no
+ fi])
+# We unconditionally disable gdbtk tests on selected platforms.
+case $host_os in
+ go32* | windows*)
+ AC_MSG_WARN([gdbtk isn't supported on $host; disabling])
+ enable_gdbtk=no ;;
+esac
+
+# Profiling support.
+AC_ARG_ENABLE(profiling,
+[ --enable-profiling enable profiling of GDB],
+ [case $enableval in
+ yes | no)
+ ;;
+ *)
+ AC_MSG_ERROR([bad value $enableval for --enable-profile]) ;;
+ esac],
+ [enable_profiling=no])
+
+AC_CHECK_FUNCS(monstartup _mcleanup)
+AC_CACHE_CHECK([for _etext], ac_cv_var__etext,
+[AC_TRY_LINK(
+[#include <stdlib.h>
+extern char _etext;
+],
+[free (&_etext);], ac_cv_var__etext=yes, ac_cv_var__etext=no)])
+if test $ac_cv_var__etext = yes; then
+ AC_DEFINE(HAVE__ETEXT, 1,
+ [Define to 1 if your system has the _etext variable. ])
+fi
+if test "$enable_profiling" = yes ; then
+ if test $ac_cv_func_monstartup = no || test $ac_cv_func__mcleanup = no; then
+ AC_MSG_ERROR(--enable-profiling requires monstartup and _mcleanup)
+ fi
+ PROFILE_CFLAGS=-pg
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $PROFILE_CFLAGS"
+
+ AC_CACHE_CHECK([whether $CC supports -pg], ac_cv_cc_supports_pg,
+ [AC_TRY_COMPILE([], [int x;], ac_cv_cc_supports_pg=yes,
+ ac_cv_cc_supports_pg=no)])
+
+ if test $ac_cv_cc_supports_pg = no; then
+ AC_MSG_ERROR(--enable-profiling requires a compiler which supports -pg)
+ fi
+
+ CFLAGS="$OLD_CFLAGS"
+fi
+
+# --------------------- #
+# Checks for programs. #
+# --------------------- #