| Message ID | 20131124095239.GA30786@redhat.com |
|---|---|
| State | New |
| Headers | show |
On Sun, 2013-11-24 at 11:52 +0200, Michael S. Tsirkin wrote: > Useful for platforms with a broken IASL. > > Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > --- > configure | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/configure b/configure > index 0592ba7..d0a0abe 100755 > --- a/configure > +++ b/configure > @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" > echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" > echo " --cc=CC use C compiler CC [$cc]" > echo " --iasl=IASL use ACPI compiler IASL [$iasl]" > +echo " iasl='' (empty string) disables ACPI compiler" > echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" > echo " build time" > echo " --cxx=CXX use C++ compiler CXX [$cxx]" > @@ -4269,7 +4270,7 @@ else > fi > echo "PYTHON=$python" >> $config_host_mak > echo "CC=$cc" >> $config_host_mak > -if $iasl -h > /dev/null 2>&1; then > +if test "$iasl" && $iasl -h > /dev/null 2>&1; then > echo "IASL=$iasl" >> $config_host_mak > fi > echo "CC_I386=$cc_i386" >> $config_host_mak I tried to disable iasl without this patch and it worked for me... I used: - [Qemu-devel] [PATCH] configure: make --iasl option actually work - ./configure --iasl="" (or --iasl=) and it worked (no sign of IASL in config-host.mak) I think this is because the prev test "$iasl -h > /dev/null 2>&1" fails of course. I don't get it how <test "$iasl"> helps if iasl is broken. Thanks, Marcel
On Sun, Nov 24, 2013 at 03:04:04PM +0200, Marcel Apfelbaum wrote: > On Sun, 2013-11-24 at 11:52 +0200, Michael S. Tsirkin wrote: > > Useful for platforms with a broken IASL. > > > > Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > > --- > > configure | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/configure b/configure > > index 0592ba7..d0a0abe 100755 > > --- a/configure > > +++ b/configure > > @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" > > echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" > > echo " --cc=CC use C compiler CC [$cc]" > > echo " --iasl=IASL use ACPI compiler IASL [$iasl]" > > +echo " iasl='' (empty string) disables ACPI compiler" > > echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" > > echo " build time" > > echo " --cxx=CXX use C++ compiler CXX [$cxx]" > > @@ -4269,7 +4270,7 @@ else > > fi > > echo "PYTHON=$python" >> $config_host_mak > > echo "CC=$cc" >> $config_host_mak > > -if $iasl -h > /dev/null 2>&1; then > > +if test "$iasl" && $iasl -h > /dev/null 2>&1; then > > echo "IASL=$iasl" >> $config_host_mak > > fi > > echo "CC_I386=$cc_i386" >> $config_host_mak > > I tried to disable iasl without this patch and it worked for me... > I used: > - [Qemu-devel] [PATCH] configure: make --iasl option actually work > - ./configure --iasl="" (or --iasl=) > and it worked (no sign of IASL in config-host.mak) > > I think this is because the prev test "$iasl -h > /dev/null 2>&1" > fails of course. By luck, yes. So this is just a documentation patch: cleaner to document the interface explicitly. I'll make this clearer in the commit log. > I don't get it how <test "$iasl"> helps if iasl is broken. > Thanks, > Marcel > > > It doesn't but it creates an interface to disable iasl for such configurations.
Am 24.11.2013 14:42, schrieb Michael S. Tsirkin: > On Sun, Nov 24, 2013 at 03:04:04PM +0200, Marcel Apfelbaum wrote: >> On Sun, 2013-11-24 at 11:52 +0200, Michael S. Tsirkin wrote: >>> Useful for platforms with a broken IASL. >>> >>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> >>> --- >>> configure | 3 ++- >>> 1 file changed, 2 insertions(+), 1 deletion(-) >>> >>> diff --git a/configure b/configure >>> index 0592ba7..d0a0abe 100755 >>> --- a/configure >>> +++ b/configure >>> @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" >>> echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" >>> echo " --cc=CC use C compiler CC [$cc]" >>> echo " --iasl=IASL use ACPI compiler IASL [$iasl]" >>> +echo " iasl='' (empty string) disables ACPI compiler" >>> echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" >>> echo " build time" >>> echo " --cxx=CXX use C++ compiler CXX [$cxx]" >>> @@ -4269,7 +4270,7 @@ else >>> fi >>> echo "PYTHON=$python" >> $config_host_mak >>> echo "CC=$cc" >> $config_host_mak >>> -if $iasl -h > /dev/null 2>&1; then >>> +if test "$iasl" && $iasl -h > /dev/null 2>&1; then >>> echo "IASL=$iasl" >> $config_host_mak >>> fi >>> echo "CC_I386=$cc_i386" >> $config_host_mak >> I tried to disable iasl without this patch and it worked for me... >> I used: >> - [Qemu-devel] [PATCH] configure: make --iasl option actually work >> - ./configure --iasl="" (or --iasl=) >> and it worked (no sign of IASL in config-host.mak) >> >> I think this is because the prev test "$iasl -h > /dev/null 2>&1" >> fails of course. > By luck, yes. > > So this is just a documentation patch: cleaner to document the > interface explicitly. > I'll make this clearer in the commit log. > --iasl=false works without further modifications (because test "false -h" works and returns false). It also looks more natural than --iasl=. Cheers, Stefan
On Sun, Nov 24, 2013 at 02:54:51PM +0100, Stefan Weil wrote: > Am 24.11.2013 14:42, schrieb Michael S. Tsirkin: > > On Sun, Nov 24, 2013 at 03:04:04PM +0200, Marcel Apfelbaum wrote: > >> On Sun, 2013-11-24 at 11:52 +0200, Michael S. Tsirkin wrote: > >>> Useful for platforms with a broken IASL. > >>> > >>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > >>> --- > >>> configure | 3 ++- > >>> 1 file changed, 2 insertions(+), 1 deletion(-) > >>> > >>> diff --git a/configure b/configure > >>> index 0592ba7..d0a0abe 100755 > >>> --- a/configure > >>> +++ b/configure > >>> @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" > >>> echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" > >>> echo " --cc=CC use C compiler CC [$cc]" > >>> echo " --iasl=IASL use ACPI compiler IASL [$iasl]" > >>> +echo " iasl='' (empty string) disables ACPI compiler" > >>> echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" > >>> echo " build time" > >>> echo " --cxx=CXX use C++ compiler CXX [$cxx]" > >>> @@ -4269,7 +4270,7 @@ else > >>> fi > >>> echo "PYTHON=$python" >> $config_host_mak > >>> echo "CC=$cc" >> $config_host_mak > >>> -if $iasl -h > /dev/null 2>&1; then > >>> +if test "$iasl" && $iasl -h > /dev/null 2>&1; then > >>> echo "IASL=$iasl" >> $config_host_mak > >>> fi > >>> echo "CC_I386=$cc_i386" >> $config_host_mak > >> I tried to disable iasl without this patch and it worked for me... > >> I used: > >> - [Qemu-devel] [PATCH] configure: make --iasl option actually work > >> - ./configure --iasl="" (or --iasl=) > >> and it worked (no sign of IASL in config-host.mak) > >> > >> I think this is because the prev test "$iasl -h > /dev/null 2>&1" > >> fails of course. > > By luck, yes. > > > > So this is just a documentation patch: cleaner to document the > > interface explicitly. > > I'll make this clearer in the commit log. > > > > --iasl=false works without further modifications (because test "false > -h" works and returns false). It also looks more natural than --iasl=. > > Cheers, Stefan It seems that some people try --iasl= as the more natural way to do this. It's not documented that a failing iasl will cause a fall-back and I'd rather document an explicit option than making it fail.
On Sun, Nov 24, 2013 at 05:39:58PM +0200, Michael S. Tsirkin wrote: > On Sun, Nov 24, 2013 at 02:54:51PM +0100, Stefan Weil wrote: > > Am 24.11.2013 14:42, schrieb Michael S. Tsirkin: > > > On Sun, Nov 24, 2013 at 03:04:04PM +0200, Marcel Apfelbaum wrote: > > >> On Sun, 2013-11-24 at 11:52 +0200, Michael S. Tsirkin wrote: > > >>> Useful for platforms with a broken IASL. > > >>> > > >>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > > >>> --- > > >>> configure | 3 ++- > > >>> 1 file changed, 2 insertions(+), 1 deletion(-) > > >>> > > >>> diff --git a/configure b/configure > > >>> index 0592ba7..d0a0abe 100755 > > >>> --- a/configure > > >>> +++ b/configure > > >>> @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" > > >>> echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" > > >>> echo " --cc=CC use C compiler CC [$cc]" > > >>> echo " --iasl=IASL use ACPI compiler IASL [$iasl]" > > >>> +echo " iasl='' (empty string) disables ACPI compiler" > > >>> echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" > > >>> echo " build time" > > >>> echo " --cxx=CXX use C++ compiler CXX [$cxx]" > > >>> @@ -4269,7 +4270,7 @@ else > > >>> fi > > >>> echo "PYTHON=$python" >> $config_host_mak > > >>> echo "CC=$cc" >> $config_host_mak > > >>> -if $iasl -h > /dev/null 2>&1; then > > >>> +if test "$iasl" && $iasl -h > /dev/null 2>&1; then > > >>> echo "IASL=$iasl" >> $config_host_mak > > >>> fi > > >>> echo "CC_I386=$cc_i386" >> $config_host_mak > > >> I tried to disable iasl without this patch and it worked for me... > > >> I used: > > >> - [Qemu-devel] [PATCH] configure: make --iasl option actually work > > >> - ./configure --iasl="" (or --iasl=) > > >> and it worked (no sign of IASL in config-host.mak) > > >> > > >> I think this is because the prev test "$iasl -h > /dev/null 2>&1" > > >> fails of course. > > > By luck, yes. > > > > > > So this is just a documentation patch: cleaner to document the > > > interface explicitly. > > > I'll make this clearer in the commit log. > > > > > > > --iasl=false works without further modifications (because test "false > > -h" works and returns false). It also looks more natural than --iasl=. > > > > Cheers, Stefan > > It seems that some people try --iasl= as the more natural way > to do this. It's not documented that a failing iasl will > cause a fall-back and I'd rather document an explicit option > than making it fail. I'm also curious why would you say =false is natural: it's a string option not a boolean one.
Am 24.11.2013 17:48, schrieb Michael S. Tsirkin: > On Sun, Nov 24, 2013 at 05:39:58PM +0200, Michael S. Tsirkin wrote: >> On Sun, Nov 24, 2013 at 02:54:51PM +0100, Stefan Weil wrote: >>> Am 24.11.2013 14:42, schrieb Michael S. Tsirkin: >>>> On Sun, Nov 24, 2013 at 03:04:04PM +0200, Marcel Apfelbaum wrote: >>>>> On Sun, 2013-11-24 at 11:52 +0200, Michael S. Tsirkin wrote: >>>>>> Useful for platforms with a broken IASL. >>>>>> >>>>>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> >>>>>> --- >>>>>> configure | 3 ++- >>>>>> 1 file changed, 2 insertions(+), 1 deletion(-) >>>>>> >>>>>> diff --git a/configure b/configure >>>>>> index 0592ba7..d0a0abe 100755 >>>>>> --- a/configure >>>>>> +++ b/configure >>>>>> @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" >>>>>> echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" >>>>>> echo " --cc=CC use C compiler CC [$cc]" >>>>>> echo " --iasl=IASL use ACPI compiler IASL [$iasl]" >>>>>> +echo " iasl='' (empty string) disables ACPI compiler" >>>>>> echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" >>>>>> echo " build time" >>>>>> echo " --cxx=CXX use C++ compiler CXX [$cxx]" >>>>>> @@ -4269,7 +4270,7 @@ else >>>>>> fi >>>>>> echo "PYTHON=$python" >> $config_host_mak >>>>>> echo "CC=$cc" >> $config_host_mak >>>>>> -if $iasl -h > /dev/null 2>&1; then >>>>>> +if test "$iasl" && $iasl -h > /dev/null 2>&1; then >>>>>> echo "IASL=$iasl" >> $config_host_mak >>>>>> fi >>>>>> echo "CC_I386=$cc_i386" >> $config_host_mak >>>>> I tried to disable iasl without this patch and it worked for me... >>>>> I used: >>>>> - [Qemu-devel] [PATCH] configure: make --iasl option actually work >>>>> - ./configure --iasl="" (or --iasl=) >>>>> and it worked (no sign of IASL in config-host.mak) >>>>> >>>>> I think this is because the prev test "$iasl -h > /dev/null 2>&1" >>>>> fails of course. >>>> By luck, yes. >>>> >>>> So this is just a documentation patch: cleaner to document the >>>> interface explicitly. >>>> I'll make this clearer in the commit log. >>>> >>> --iasl=false works without further modifications (because test "false >>> -h" works and returns false). It also looks more natural than --iasl=. >>> >>> Cheers, Stefan >> It seems that some people try --iasl= as the more natural way >> to do this. It's not documented that a failing iasl will >> cause a fall-back and I'd rather document an explicit option >> than making it fail. > I'm also curious why would you say =false is natural: > it's a string option not a boolean one. > 'false' is a string here, namely the name of the executable which is normally found at /bin/false. It takes any number of parameters and always returns 1 (which is boolean false in shell conventions). You could also write --iasl=/bin/false. I suggest this kind of patch: echo " --iasl=IASL use ACPI compiler IASL [$iasl]" +echo " iasl=false disables the ACPI compiler" echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" Stefan
On Sun, Nov 24, 2013 at 09:58:34PM +0100, Stefan Weil wrote: > Am 24.11.2013 17:48, schrieb Michael S. Tsirkin: > > On Sun, Nov 24, 2013 at 05:39:58PM +0200, Michael S. Tsirkin wrote: > >> On Sun, Nov 24, 2013 at 02:54:51PM +0100, Stefan Weil wrote: > >>> Am 24.11.2013 14:42, schrieb Michael S. Tsirkin: > >>>> On Sun, Nov 24, 2013 at 03:04:04PM +0200, Marcel Apfelbaum wrote: > >>>>> On Sun, 2013-11-24 at 11:52 +0200, Michael S. Tsirkin wrote: > >>>>>> Useful for platforms with a broken IASL. > >>>>>> > >>>>>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > >>>>>> --- > >>>>>> configure | 3 ++- > >>>>>> 1 file changed, 2 insertions(+), 1 deletion(-) > >>>>>> > >>>>>> diff --git a/configure b/configure > >>>>>> index 0592ba7..d0a0abe 100755 > >>>>>> --- a/configure > >>>>>> +++ b/configure > >>>>>> @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" > >>>>>> echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" > >>>>>> echo " --cc=CC use C compiler CC [$cc]" > >>>>>> echo " --iasl=IASL use ACPI compiler IASL [$iasl]" > >>>>>> +echo " iasl='' (empty string) disables ACPI compiler" > >>>>>> echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" > >>>>>> echo " build time" > >>>>>> echo " --cxx=CXX use C++ compiler CXX [$cxx]" > >>>>>> @@ -4269,7 +4270,7 @@ else > >>>>>> fi > >>>>>> echo "PYTHON=$python" >> $config_host_mak > >>>>>> echo "CC=$cc" >> $config_host_mak > >>>>>> -if $iasl -h > /dev/null 2>&1; then > >>>>>> +if test "$iasl" && $iasl -h > /dev/null 2>&1; then > >>>>>> echo "IASL=$iasl" >> $config_host_mak > >>>>>> fi > >>>>>> echo "CC_I386=$cc_i386" >> $config_host_mak > >>>>> I tried to disable iasl without this patch and it worked for me... > >>>>> I used: > >>>>> - [Qemu-devel] [PATCH] configure: make --iasl option actually work > >>>>> - ./configure --iasl="" (or --iasl=) > >>>>> and it worked (no sign of IASL in config-host.mak) > >>>>> > >>>>> I think this is because the prev test "$iasl -h > /dev/null 2>&1" > >>>>> fails of course. > >>>> By luck, yes. > >>>> > >>>> So this is just a documentation patch: cleaner to document the > >>>> interface explicitly. > >>>> I'll make this clearer in the commit log. > >>>> > >>> --iasl=false works without further modifications (because test "false > >>> -h" works and returns false). It also looks more natural than --iasl=. > >>> > >>> Cheers, Stefan > >> It seems that some people try --iasl= as the more natural way > >> to do this. It's not documented that a failing iasl will > >> cause a fall-back and I'd rather document an explicit option > >> than making it fail. > > I'm also curious why would you say =false is natural: > > it's a string option not a boolean one. > > > > 'false' is a string here, namely the name of the executable which is > normally found at /bin/false. > It takes any number of parameters and always returns 1 (which is boolean > false > in shell conventions). > > You could also write --iasl=/bin/false. > > I suggest this kind of patch: > > echo " --iasl=IASL use ACPI compiler IASL [$iasl]" > +echo " iasl=false disables the ACPI compiler" It's still not a natural interface. It works by chance because we run iasl and test the return code, but we don't have to. For example, a reasonable implementation might produce an error if the user-specified iasl fails, breaking this hack. Interfaces should not follow implementation. If you don't want iasl a reasonable syntax is '' or --disable-iasl. > echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" > > > Stefan
On Mon, 2013-11-25 at 13:26 +0200, Michael S. Tsirkin wrote: > On Sun, Nov 24, 2013 at 09:58:34PM +0100, Stefan Weil wrote: > > Am 24.11.2013 17:48, schrieb Michael S. Tsirkin: > > > On Sun, Nov 24, 2013 at 05:39:58PM +0200, Michael S. Tsirkin wrote: > > >> On Sun, Nov 24, 2013 at 02:54:51PM +0100, Stefan Weil wrote: > > >>> Am 24.11.2013 14:42, schrieb Michael S. Tsirkin: > > >>>> On Sun, Nov 24, 2013 at 03:04:04PM +0200, Marcel Apfelbaum wrote: > > >>>>> On Sun, 2013-11-24 at 11:52 +0200, Michael S. Tsirkin wrote: > > >>>>>> Useful for platforms with a broken IASL. > > >>>>>> > > >>>>>> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> > > >>>>>> --- > > >>>>>> configure | 3 ++- > > >>>>>> 1 file changed, 2 insertions(+), 1 deletion(-) > > >>>>>> > > >>>>>> diff --git a/configure b/configure > > >>>>>> index 0592ba7..d0a0abe 100755 > > >>>>>> --- a/configure > > >>>>>> +++ b/configure > > >>>>>> @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" > > >>>>>> echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" > > >>>>>> echo " --cc=CC use C compiler CC [$cc]" > > >>>>>> echo " --iasl=IASL use ACPI compiler IASL [$iasl]" > > >>>>>> +echo " iasl='' (empty string) disables ACPI compiler" > > >>>>>> echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" > > >>>>>> echo " build time" > > >>>>>> echo " --cxx=CXX use C++ compiler CXX [$cxx]" > > >>>>>> @@ -4269,7 +4270,7 @@ else > > >>>>>> fi > > >>>>>> echo "PYTHON=$python" >> $config_host_mak > > >>>>>> echo "CC=$cc" >> $config_host_mak > > >>>>>> -if $iasl -h > /dev/null 2>&1; then > > >>>>>> +if test "$iasl" && $iasl -h > /dev/null 2>&1; then > > >>>>>> echo "IASL=$iasl" >> $config_host_mak > > >>>>>> fi > > >>>>>> echo "CC_I386=$cc_i386" >> $config_host_mak > > >>>>> I tried to disable iasl without this patch and it worked for me... > > >>>>> I used: > > >>>>> - [Qemu-devel] [PATCH] configure: make --iasl option actually work > > >>>>> - ./configure --iasl="" (or --iasl=) > > >>>>> and it worked (no sign of IASL in config-host.mak) > > >>>>> > > >>>>> I think this is because the prev test "$iasl -h > /dev/null 2>&1" > > >>>>> fails of course. > > >>>> By luck, yes. > > >>>> > > >>>> So this is just a documentation patch: cleaner to document the > > >>>> interface explicitly. > > >>>> I'll make this clearer in the commit log. > > >>>> > > >>> --iasl=false works without further modifications (because test "false > > >>> -h" works and returns false). It also looks more natural than --iasl=. > > >>> > > >>> Cheers, Stefan > > >> It seems that some people try --iasl= as the more natural way > > >> to do this. It's not documented that a failing iasl will > > >> cause a fall-back and I'd rather document an explicit option > > >> than making it fail. > > > I'm also curious why would you say =false is natural: > > > it's a string option not a boolean one. > > > > > > > 'false' is a string here, namely the name of the executable which is > > normally found at /bin/false. > > It takes any number of parameters and always returns 1 (which is boolean > > false > > in shell conventions). > > > > You could also write --iasl=/bin/false. > > > > I suggest this kind of patch: > > > > echo " --iasl=IASL use ACPI compiler IASL [$iasl]" > > +echo " iasl=false disables the ACPI compiler" > > It's still not a natural interface. > > It works by chance because we run iasl and test the return code, > but we don't have to. > For example, a reasonable implementation might produce > an error if the user-specified iasl fails, breaking this hack. > > Interfaces should not follow implementation. > If you don't want iasl a reasonable syntax is '' or > --disable-iasl. +1 on --disable-iasl Marcel > > echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" > > > > > > Stefan
Am 25.11.2013 14:54, schrieb Marcel Apfelbaum: > On Mon, 2013-11-25 at 13:26 +0200, Michael S. Tsirkin wrote: >> On Sun, Nov 24, 2013 at 09:58:34PM +0100, Stefan Weil wrote: >>>>>> --iasl=false works without further modifications (because test "false >>>>>> -h" works and returns false). It also looks more natural than --iasl=. >>>>>> >>>>>> Cheers, Stefan >>>>> It seems that some people try --iasl= as the more natural way >>>>> to do this. It's not documented that a failing iasl will >>>>> cause a fall-back and I'd rather document an explicit option >>>>> than making it fail. >>>> I'm also curious why would you say =false is natural: >>>> it's a string option not a boolean one. >>>> >>> 'false' is a string here, namely the name of the executable which is >>> normally found at /bin/false. >>> It takes any number of parameters and always returns 1 (which is boolean >>> false >>> in shell conventions). >>> >>> You could also write --iasl=/bin/false. >>> >>> I suggest this kind of patch: >>> >>> echo " --iasl=IASL use ACPI compiler IASL [$iasl]" >>> +echo " iasl=false disables the ACPI compiler" >> It's still not a natural interface. >> >> It works by chance because we run iasl and test the return code, >> but we don't have to. >> For example, a reasonable implementation might produce >> an error if the user-specified iasl fails, breaking this hack. >> >> Interfaces should not follow implementation. >> If you don't want iasl a reasonable syntax is '' or >> --disable-iasl. > +1 on --disable-iasl > > Marcel I also prefer --disable-iasl because that's the usual QEMU way how to disable features. Cheers, Stefan
diff --git a/configure b/configure index 0592ba7..d0a0abe 100755 --- a/configure +++ b/configure @@ -1080,6 +1080,7 @@ echo " --source-path=PATH path of source code [$source_path]" echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]" echo " --cc=CC use C compiler CC [$cc]" echo " --iasl=IASL use ACPI compiler IASL [$iasl]" +echo " iasl='' (empty string) disables ACPI compiler" echo " --host-cc=CC use C compiler CC [$host_cc] for code run at" echo " build time" echo " --cxx=CXX use C++ compiler CXX [$cxx]" @@ -4269,7 +4270,7 @@ else fi echo "PYTHON=$python" >> $config_host_mak echo "CC=$cc" >> $config_host_mak -if $iasl -h > /dev/null 2>&1; then +if test "$iasl" && $iasl -h > /dev/null 2>&1; then echo "IASL=$iasl" >> $config_host_mak fi echo "CC_I386=$cc_i386" >> $config_host_mak
Useful for platforms with a broken IASL. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> --- configure | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)