* doc/as.texinfo (Symbol Names): Don't use obsolete @ctrl macro.

[deliverable/binutils-gdb.git] / gdb / configure.in

dnl Autoconf configure script for GDB, the GNU debugger.
dnl Copyright 1995, 1996 Free Software Foundation, Inc.
dnl
dnl This file is part of GDB.
dnl 
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl 
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.
dnl 
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

dnl Process this file with autoconf to produce a configure script.

AC_PREREQ(2.5)dnl
AC_INIT(main.c)
AC_CONFIG_HEADER(config.h:config.in)

AC_PROG_CC
AC_AIX
AC_MINIX
AC_ISC_POSIX

AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/..)
AC_CANONICAL_SYSTEM

dnl List of object files added by configure.

CONFIG_OBS=

configdirs="doc testsuite"

dnl
changequote(,)dnl

. ${srcdir}/configure.host

. ${srcdir}/configure.tgt

dnl
changequote([,])dnl

AC_PROG_INSTALL
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_PROG_YACC
AC_PROG_AWK

AC_ARG_PROGRAM

AC_HEADER_STDC
AC_CHECK_HEADERS(limits.h memory.h string.h strings.h unistd.h termios.h termio.h sgtty.h stddef.h stdlib.h sys/procfs.h link.h endian.h objlist.h)
AC_HEADER_STAT

AC_C_CONST

AC_CHECK_FUNCS(setpgid sbrk select poll)

# If we are configured native on Linux, work around problems with sys/procfs.h
if test "${target}" = "${host}"; then
  case "${host}" in
  i[3456]86-*-linux*)
	AC_DEFINE(START_INFERIOR_TRAPS_EXPECTED,"2")
	AC_DEFINE(sys_quotactl)
	;;
  esac
fi

AC_MSG_CHECKING([for gregset_t type])
AC_CACHE_VAL(gdb_cv_have_gregset_t,
[AC_TRY_LINK([#include <sys/procfs.h>],[gregset_t *gregsetp = 0],
gdb_cv_have_gregset_t=yes, gdb_cv_have_gregset_t=no)])
AC_MSG_RESULT($gdb_cv_have_gregset_t)
if test $gdb_cv_have_gregset_t = yes; then
  AC_DEFINE(HAVE_GREGSET_T)
fi

AC_MSG_CHECKING([for fpregset_t type])
AC_CACHE_VAL(gdb_cv_have_fpregset_t,
[AC_TRY_LINK([#include <sys/procfs.h>],[fpregset_t *fpregsetp = 0],
gdb_cv_have_fpregset_t=yes, gdb_cv_have_fpregset_t=no)])
AC_MSG_RESULT($gdb_cv_have_fpregset_t)
if test $gdb_cv_have_fpregset_t = yes; then
  AC_DEFINE(HAVE_FPREGSET_T)
fi

dnl See if host has libm.  This is usually needed by simulators.
AC_CHECK_LIB(m, main)

dnl See if compiler supports "long long" type.

AC_MSG_CHECKING(for long long support in compiler)
AC_CACHE_VAL(gdb_cv_c_long_long,
[AC_TRY_COMPILE(, [
  extern long long foo;
  switch (foo & 2) { case 0: return 1; }
],
gdb_cv_c_long_long=yes, gdb_cv_c_long_long=no)])
AC_MSG_RESULT($gdb_cv_c_long_long)
if test $gdb_cv_c_long_long = yes; then
  AC_DEFINE(CC_HAS_LONG_LONG)
fi

dnl See if the compiler and runtime support printing long long

AC_MSG_CHECKING(for long long support in printf)
AC_CACHE_VAL(gdb_cv_printf_has_long_long,
[AC_TRY_RUN([
int main () {
  char buf[16];
  long long l = 0x12345;
  sprintf (buf, "%llx", l);
  return (strcmp ("12345", buf));
}],
gdb_cv_printf_has_long_long=yes,
gdb_cv_printf_has_long_long=no,
gdb_cv_printf_has_long_long=no)])
if test $gdb_cv_printf_has_long_long = yes; then
  AC_DEFINE(PRINTF_HAS_LONG_LONG)
fi
AC_MSG_RESULT($gdb_cv_printf_has_long_long)

dnl See if compiler supports "long double" type.  Can't use AC_C_LONG_DOUBLE
dnl because autoconf complains about cross-compilation issues.  However, this
dnl code uses the same variables as the macro for compatibility.

AC_MSG_CHECKING(for long double support in compiler)
AC_CACHE_VAL(ac_cv_c_long_double,
[AC_TRY_COMPILE(, [long double foo;],
ac_cv_c_long_double=yes, ac_cv_c_long_double=no)])
AC_MSG_RESULT($ac_cv_c_long_double)
if test $ac_cv_c_long_double = yes; then
  AC_DEFINE(HAVE_LONG_DOUBLE)
fi

dnl See if the compiler and runtime support printing long doubles

AC_MSG_CHECKING(for long double support in printf)
AC_CACHE_VAL(gdb_cv_printf_has_long_double,
[AC_TRY_RUN([
int main () {
  char buf[16];
  long double f = 3.141592653;
  sprintf (buf, "%Lg", f);
  return (strncmp ("3.14159", buf, 7));
}],
gdb_cv_printf_has_long_double=yes,
gdb_cv_printf_has_long_double=no,
gdb_cv_printf_has_long_double=no)])
if test $gdb_cv_printf_has_long_double = yes; then
  AC_DEFINE(PRINTF_HAS_LONG_DOUBLE)
fi
AC_MSG_RESULT($gdb_cv_printf_has_long_double)

AC_FUNC_MMAP

BFD_NEED_DECLARATION(malloc)
BFD_NEED_DECLARATION(realloc)
BFD_NEED_DECLARATION(free)

dnl See if thread_db library is around for Solaris thread debugging.  Note that
dnl we must explicitly test for version 1 of the library because version 0
dnl (present on Solaris 2.4 or earlier) doesn't have the same API.

dnl Note that we only want this if we are both native (host == target), and
dnl not doing a canadian cross build (build == host).

if test ${build} = ${host} -a ${host} = ${target} ; then
	case ${host_os} in
	hpux*)
		AC_MSG_CHECKING(for HPUX/OSF thread support)
		if test -f /usr/include/dce/cma_config.h ; then
			if test "$GCC" = "yes" ; then
				AC_MSG_RESULT(yes)
				AC_DEFINE(HAVE_HPUX_THREAD_SUPPORT)
				CONFIG_OBS="${CONFIG_OJS} hpux-thread.o"
			else
				AC_MSG_RESULT(no (suppressed because you are not using GCC))
			fi
		else
			AC_MSG_RESULT(no)
		fi
		;;
	solaris*)
		AC_MSG_CHECKING(for Solaris thread debugging library)
		if test -f /usr/lib/libthread_db.so.1 ; then
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_THREAD_DB_LIB)
			CONFIG_OBS="${CONFIG_OBS} sol-thread.o"
			AC_CHECK_LIB(dl, dlopen)
			if test "$GCC" = "yes" ; then
				CONFIG_LDFLAGS="${CONFIG_LDFLAGS} -Xlinker -export-dynamic"
			fi
		else
			AC_MSG_RESULT(no)
		fi
		;;
	esac
	AC_SUBST(CONFIG_LDFLAGS)
fi

dnl Handle optional features that can be enabled.
ENABLE_CFLAGS=

AC_ARG_ENABLE(netrom,
[  --enable-netrom ],
[case "${enableval}" in
yes)	enable_netrom=yes ;;
no)	enable_netrom=no ;;
*)	AC_MSG_ERROR(bad value ${enableval} given for netrom option) ;;
esac])

if test "${enable_netrom}" = "yes"; then
	CONFIG_OBS="${CONFIG_OBS} remote-nrom.o" 
fi

# start-sanitize-gm
ENABLE_GM=

AC_ARG_ENABLE(gm,
[  --enable-gm ],
[case "${enableval}" in
yes)	CONFIG_OBS="${CONFIG_OBS} gmagic.o"
	ENABLE_CFLAGS=-DGENERAL_MAGIC
	;;
no)	;;
*)	AC_MSG_ERROR(bad value ${enableval} given for gm option) ;;
esac])

# end-sanitize-gm

AC_ARG_ENABLE(sim-powerpc,
[  --enable-sim-powerpc ],
[case "${enableval}" in
yes)	powerpc_sim=yes ;;
no)	powerpc_sim=no ;;
*)	AC_MSG_ERROR(bad value ${enableval} given for sim-powerpc option) ;;
esac],[if test x"$GCC" != x""; then powerpc_sim=yes; else powerpc_sim=no; fi])

# start-sanitize-gdbtk
ENABLE_GDBTK=

AC_ARG_ENABLE(gdbtk,
[  --enable-gdbtk ],
[case "${enableval}" in
    yes)
	case "$host" in
	*go32*)
	    AC_MSG_WARN([GDB does not support GDBtk on host ${host}.  GDBtk will be disabled.])
	    enable_gdbtk=no ;;
	*windows*)
	    AC_MSG_WARN([GDB does not support GDBtk on host ${host}.  GDBtk will be disabled.])
	    enable_gdbtk=no ;;
	*)
	    enable_gdbtk=yes ;;
	esac ;;
    no)
	enable_gdbtk=no  ;;
    *)
	AC_MSG_ERROR(bad value ${enableval} given for gdbtk option) ;;
esac],
[
# Default is on for everything but go32 and cygwin32
case "$host" in
    *go32* | *windows*)
	;;
    *)
	enable_gdbtk=yes ;;
    esac
])

case "${target}" in
*-cygwin32)
	configdir="win"
	;;
*)
	configdir="unix"
	;;
esac

if test "${enable_gdbtk}" = "yes"; then

    CY_AC_PATH_TCLCONFIG
    if test -z "${no_tcl}"; then
	CY_AC_LOAD_TCLCONFIG
	CY_AC_PATH_TKCONFIG

	# If $no_tk is nonempty, then we can't do Tk, and there is no
	# point to doing Tcl.
	if test -z "${no_tk}"; then
	   CY_AC_LOAD_TKCONFIG
	   CY_AC_PATH_TCLH
	   CY_AC_PATH_TKH

	   ENABLE_GDBTK=1

	   # Include some libraries that Tcl and Tk want.
	   TCL_LIBS='$(TK) $(TCL) $(X11_LDFLAGS) $(X11_LIBS)'
	   # Yes, the ordering seems wrong here.  But it isn't.
	   # TK_LIBS is the list of libraries that need to be linked
	   # after Tcl/Tk.
	   LIBS="${LIBS} ${TCL_LIBS} ${TK_LIBS}"
	   CONFIG_OBS="${CONFIG_OBS} gdbtk.o"
	fi
    fi
fi

AC_SUBST(ENABLE_GDBTK)
AC_SUBST(X_CFLAGS)
AC_SUBST(X_LDFLAGS)
AC_SUBST(X_LIBS)
# end-sanitize-gdbtk

AC_SUBST(ENABLE_CFLAGS)

AC_SUBST(CONFIG_OBS)

# Begin stuff to support --enable-shared
AC_ARG_ENABLE(shared,
[  --enable-shared         use shared libraries],
[case "${enableval}" in
  yes) shared=true ;;
  no)  shared=false ;;
  *) shared=true ;;
esac])dnl

HLDFLAGS=
HLDENV=
# If we have shared libraries, try to set rpath reasonably.
if test "${shared}" = "true"; then
  case "${host}" in
  *-*-hpux*)
    HLDFLAGS='-Wl,+s,+b,$(libdir)'
    ;;
  *-*-irix5* | *-*-irix6*)
    HLDFLAGS='-Wl,-rpath,$(libdir)'
    ;;
  *-*-linux*aout*)
    ;;
  *-*-linux* | *-pc-linux-gnu)
    HLDFLAGS='-Wl,-rpath,$(libdir)'
    ;;
  *-*-solaris*)
    HLDFLAGS='-R $(libdir)'
    ;;
  *-*-sysv4*)
    HLDENV='if test -z "$${LD_RUN_PATH}"; then LD_RUN_PATH=$(libdir); else LD_RUN_PATH=$${LD_RUN_PATH}:$(libdir); fi; export LD_RUN_PATH;'
    ;;
  esac
fi

# On SunOS, if the linker supports the -rpath option, use it to
# prevent ../bfd and ../opcodes from being included in the run time
# search path.
case "${host}" in
  *-*-sunos*)
    echo 'main () { }' > conftest.c
    ${CC} -o conftest -Wl,-rpath= conftest.c >/dev/null 2>conftest.t
    if grep 'unrecognized' conftest.t >/dev/null 2>&1; then
      :
    elif grep 'No such file' conftest.t >/dev/null 2>&1; then
      :
    elif grep 'do not mix' conftest.t >/dev/null 2>&1; then
      :
    elif grep 'some text already loaded' conftest.t >/dev/null 2>&1; then
      :
    elif test "${shared}" = "true"; then
      HLDFLAGS='-Wl,-rpath=$(libdir)'
    else
      HLDFLAGS='-Wl,-rpath='
    fi
    rm -f conftest.t conftest.c conftest
    ;;
esac
AC_SUBST(HLDFLAGS)
AC_SUBST(HLDENV)
# End stuff to support --enable-shared

# target_subdir is used by the testsuite to find the target libraries.
target_subdir=
if test "${host}" != "${target}"; then
    target_subdir="${target_alias}/"
fi
AC_SUBST(target_subdir)

frags=
host_makefile_frag=${srcdir}/config/${gdb_host_cpu}/${gdb_host}.mh
if test ! -f ${host_makefile_frag}; then
AC_MSG_ERROR("*** Gdb does not support host ${host}")
fi
frags="$frags $host_makefile_frag"

target_makefile_frag=${srcdir}/config/${gdb_target_cpu}/${gdb_target}.mt
if test ! -f ${target_makefile_frag}; then
AC_MSG_ERROR("*** Gdb does not support target ${target}")
fi
frags="$frags $target_makefile_frag"

AC_SUBST_FILE(host_makefile_frag)
AC_SUBST_FILE(target_makefile_frag)
AC_SUBST(frags)

changequote(,)dnl
hostfile=`sed -n '
s/XM_FILE[ 	]*=[ 	]*\([^ 	]*\)/\1/p
' ${host_makefile_frag}`

targetfile=`sed -n '
s/TM_FILE[ 	]*=[ 	]*\([^ 	]*\)/\1/p
' ${target_makefile_frag}`

# these really aren't orthogonal true/false values of the same condition,
# but shells are slow enough that I like to reuse the test conditions
# whenever possible
if test "${target}" = "${host}"; then
nativefile=`sed -n '
s/NAT_FILE[ 	]*=[ 	]*\([^ 	]*\)/\1/p
' ${host_makefile_frag}`
# else
# GDBserver is only useful in a "native" enviroment
# configdirs=`echo $configdirs | sed 's/gdbserver//'`
fi
changequote([,])

# If hostfile (XM_FILE) and/or targetfile (TM_FILE) and/or nativefile
# (NAT_FILE) is not set in config/*/*.m[ht] files, we don't make the
# corresponding links.  But we have to remove the xm.h files and tm.h
# files anyway, e.g. when switching from "configure host" to
# "configure none".

files=
links=
rm -f xm.h
if test "${hostfile}" != ""; then
files="${files} config/${gdb_host_cpu}/${hostfile}"
links="${links} xm.h"
fi
rm -f tm.h
if test "${targetfile}" != ""; then
files="${files} config/${gdb_target_cpu}/${targetfile}"
links="${links} tm.h"
fi
rm -f nm.h
if test "${nativefile}" != ""; then
files="${files} config/${gdb_host_cpu}/${nativefile}"
links="${links} nm.h"
else
# A cross-only configuration.
files="${files} config/nm-empty.h"
links="${links} nm.h"
fi
# start-sanitize-gdbtk

# Make it possible to use the GUI without doing a full install
if test "${enable_gdbtk}" = "yes" -a ! -f gdbtk.tcl ; then
files="${files} gdbtk.tcl"
links="${links} gdbtk.tcl"
fi
# end-sanitize-gdbtk

AC_LINK_FILES($files, $links)

AC_CONFIG_SUBDIRS($configdirs)
AC_OUTPUT(Makefile, 
[
dnl Autoconf doesn't provide a mechanism for modifying definitions 
dnl provided by makefile fragments.
dnl
if test "${nativefile}" = ""; then
sed -e '/^NATDEPFILES[[ 	]]*=[[ 	]]*/s//# NATDEPFILES=/' \
	< Makefile > Makefile.tem
mv -f Makefile.tem Makefile
fi

changequote(,)dnl
sed -e '/^TM_FILE[ 	]*=/s,^TM_FILE[ 	]*=[ 	]*,&config/'"${gdb_target_cpu}"'/,
/^XM_FILE[ 	]*=/s,^XM_FILE[ 	]*=[ 	]*,&config/'"${gdb_host_cpu}"'/,
/^NAT_FILE[ 	]*=/s,^NAT_FILE[ 	]*=[ 	]*,&config/'"${gdb_host_cpu}"'/,' <Makefile >Makefile.tmp
mv -f Makefile.tmp Makefile
changequote([,])dnl

case ${srcdir} in
.)
;;
*)
grep "source ${srcdir}/.gdbinit" .gdbinit >/dev/null 2>/dev/null || \
echo "source ${srcdir}/.gdbinit" >> .gdbinit
esac

case x$CONFIG_HEADERS in
xconfig.h:config.in)
echo > stamp-h ;;
esac
],
[
gdb_host_cpu=$gdb_host_cpu
gdb_target_cpu=$gdb_target_cpu
nativefile=$nativefile
])

exit 0