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Remove assumption that there is a host.

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This commit is contained in:
Andrew Cagney
2002-01-20 18:19:30 +00:00
parent c2f05ac92e
commit 7fd6052758
5 changed files with 76 additions and 30 deletions
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6
gdb/ChangeLog
View File

@@ -1,3 +1,9 @@
2002-01-20 Andrew Cagney <ac131313@redhat.com>
* configure.in (host_makefile_frag): Only require a host makefile
fragment when a native build.
* configure: Re-generate.
2002-01-20 Andrew Cagney <ac131313@redhat.com>
* doublest.h (floatformat_from_type): Declare.

27
gdb/configure vendored
View File

@@ -8437,7 +8437,14 @@ fi
frags=
host_makefile_frag=${srcdir}/config/${gdb_host_cpu}/${gdb_host}.mh
if test ! -f ${host_makefile_frag}; then
{ echo "configure: error: "*** Gdb does not support host ${host}"" 1>&2; exit 1; }
# When building a native debuger the .mh file containing things
# like NATDEPFILES is needed. Cross debuggers don't need .mh
# since it no longer contains anything useful.
if test "${target}" = "${host}"; then
{ echo "configure: error: "*** Gdb does not support native target ${host}"" 1>&2; exit 1; }
else
host_makefile_frag=/dev/null
fi
fi
frags="$frags $host_makefile_frag"
@@ -8564,7 +8571,7 @@ fi
echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
echo "configure:8568: checking whether ln -s works" >&5
echo "configure:8575: checking whether ln -s works" >&5
if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@@ -8588,12 +8595,12 @@ fi
echo $ac_n "checking for Cygwin environment""... $ac_c" 1>&6
echo "configure:8592: checking for Cygwin environment" >&5
echo "configure:8599: checking for Cygwin environment" >&5
if eval "test \"`echo '$''{'ac_cv_cygwin'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 8597 "configure"
#line 8604 "configure"
#include "confdefs.h"
int main() {
@@ -8604,7 +8611,7 @@ int main() {
return __CYGWIN__;
; return 0; }
EOF
if { (eval echo configure:8608: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
if { (eval echo configure:8615: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
ac_cv_cygwin=yes
else
@@ -8621,19 +8628,19 @@ echo "$ac_t""$ac_cv_cygwin" 1>&6
CYGWIN=
test "$ac_cv_cygwin" = yes && CYGWIN=yes
echo $ac_n "checking for mingw32 environment""... $ac_c" 1>&6
echo "configure:8625: checking for mingw32 environment" >&5
echo "configure:8632: checking for mingw32 environment" >&5
if eval "test \"`echo '$''{'ac_cv_mingw32'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
#line 8630 "configure"
#line 8637 "configure"
#include "confdefs.h"
int main() {
return __MINGW32__;
; return 0; }
EOF
if { (eval echo configure:8637: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
if { (eval echo configure:8644: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
rm -rf conftest*
ac_cv_mingw32=yes
else
@@ -8652,7 +8659,7 @@ test "$ac_cv_mingw32" = yes && MINGW32=yes
echo $ac_n "checking for executable suffix""... $ac_c" 1>&6
echo "configure:8656: checking for executable suffix" >&5
echo "configure:8663: checking for executable suffix" >&5
if eval "test \"`echo '$''{'ac_cv_exeext'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
@@ -8662,7 +8669,7 @@ else
rm -f conftest*
echo 'int main () { return 0; }' > conftest.$ac_ext
ac_cv_exeext=
if { (eval echo configure:8666: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
if { (eval echo configure:8673: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; }; then
for file in conftest.*; do
case $file in
*.c | *.o | *.obj | *.ilk | *.pdb) ;;

9
gdb/configure.in
View File

@@ -1203,7 +1203,14 @@ 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 ${host}")
# When building a native debuger the .mh file containing things
# like NATDEPFILES is needed. Cross debuggers don't need .mh
# since it no longer contains anything useful.
if test "${target}" = "${host}"; then
AC_MSG_ERROR("*** Gdb does not support native target ${host}")
else
host_makefile_frag=/dev/null
fi
fi
frags="$frags $host_makefile_frag"

6
gdb/doc/ChangeLog
View File

@@ -1,3 +1,9 @@
2002-01-20 Andrew Cagney <ac131313@redhat.com>
* gdbint.texinfo (Host Definition): Revise. xm-xyz.h and xyz.mh
are no longer needed.
(Porting GDB): Add maintainer note about configure.host.
2002-01-20 Andrew Cagney <ac131313@redhat.com>
* gdbint.texinfo (Target Architecture Definition): Remove

58
gdb/doc/gdbint.texinfo
View File

@@ -2020,38 +2020,44 @@ distribution!
@chapter Host Definition
@emph{Maintainer's note: In theory, new targets no longer need to use
the host framework described below. Instead it should be possible to
handle everything using autoconf. Patches eliminating this framework
welcome.}
With the advent of Autoconf, it's rarely necessary to have host
definition machinery anymore.
definition machinery anymore. The following information is provided,
mainly, as an historical reference.
@section Adding a New Host
@cindex adding a new host
@cindex host, adding
Most of @value{GDBN}'s host configuration support happens via
Autoconf. New host-specific definitions should be rarely needed.
@value{GDBN} still uses the host-specific definitions and files listed
below, but these mostly exist for historical reasons, and should
@value{GDBN}'s host configuration support normally happens via Autoconf.
New host-specific definitions should not be needed. Older hosts
@value{GDBN} still use the host-specific definitions and files listed
below, but these mostly exist for historical reasons, and will
eventually disappear.
Several files control @value{GDBN}'s configuration for host systems:
@table @file
@item gdb/config/@var{arch}/@var{xyz}.mh
Specifies Makefile fragments needed when hosting on machine @var{xyz}.
Optionally specifies the header file which describes host @var{xyz}, by
defining @code{XM_FILE= xm-@var{xyz}.h}. You can also define @code{CC},
This file once contained both host and native configuration information
(@pxref{Native Debugging}) for the machine @var{xyz}. The host
configuration information is now handed by Autoconf.
Host configuration information included a definition of
@code{XM_FILE=xm-@var{xyz}.h} and possibly definitions for @code{CC},
@code{SYSV_DEFINE}, @code{XM_CFLAGS}, @code{XM_ADD_FILES},
@code{XM_CLIBS}, @code{XM_CDEPS}, etc.; see @file{Makefile.in}.
New host only configurations do not need this file.
@item gdb/config/@var{arch}/xm-@var{xyz}.h
(@file{xm.h} is a link to this file, created by @code{configure}). Contains C
macro definitions describing the host system environment, such as byte
order, host C compiler and library.
This file once contained definitions and includes required when hosting
gdb on machine @var{xyz}. Those definitions and includes are now
handled by Autoconf.
New host and native configurations do not need this file.
@emph{Maintainer's note: Some hosts continue to use the @file{xm-xyz.h}
file to define the macros @var{HOST_FLOAT_FORMAT},
@var{HOST_DOUBLE_FORMAT} and @var{HOST_LONG_DOUBLE_FORMAT}. That code
also needs to be replaced with either an Autoconf or run-time test.}
@end table
@@ -3762,7 +3768,7 @@ Several files control @value{GDBN}'s configuration for native support:
@table @file
@vindex NATDEPFILES
@item gdb/config/@var{arch}/@var{xyz}.mh
Specifies Makefile fragments needed when hosting @emph{or native} on
Specifies Makefile fragments needed by a @emph{native} configuration on
machine @var{xyz}. In particular, this lists the required
native-dependent object files, by defining @samp{NATDEPFILES=@dots{}}.
Also specifies the header file which describes native support on
@@ -3770,6 +3776,13 @@ Also specifies the header file which describes native support on
define @samp{NAT_CFLAGS}, @samp{NAT_ADD_FILES}, @samp{NAT_CLIBS},
@samp{NAT_CDEPS}, etc.; see @file{Makefile.in}.
@emph{Maintainer's note: The @file{.mh} suffix is because this file
originally contained @file{Makefile} fragments for hosting @value{GDBN}
on machine @var{xyz}. While the file is no longer used for this
purpose, the @file{.mh} suffix remains. Perhaphs someone will
eventually rename these fragments so that they have a @file{.mn}
suffix.}
@item gdb/config/@var{arch}/nm-@var{xyz}.h
(@file{nm.h} is a link to this file, created by @code{configure}). Contains C
macro definitions describing the native system environment, such as
@@ -4745,6 +4758,13 @@ desired target is already available) also edit @file{gdb/configure.tgt},
setting @code{gdb_target} to something appropriate (for instance,
@var{xyz}).
@emph{Maintainer's note: Work in progress. The file
@file{gdb/configure.host} originally needed to be modified when either a
new native target or a new host machine was being added to @value{GDBN}.
Recent changes have removed this requirement. The file now only needs
to be modified when adding a new native configuration. This will likely
changed again in the future.}
@item
Finally, you'll need to specify and define @value{GDBN}'s host-, native-, and
target-dependent @file{.h} and @file{.c} files used for your