* [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
@ 2012-02-26 23:26 Paul Gortmaker
2012-02-27 0:23 ` Mike Frysinger
` (2 more replies)
0 siblings, 3 replies; 17+ messages in thread
From: Paul Gortmaker @ 2012-02-26 23:26 UTC (permalink / raw)
To: JBottomley, jejb, kyle, deller
Cc: linux-parisc, linux-kernel, linux-next, Paul Gortmaker
Using the 64 bit toolchains from kernel.org[1], one finds that
you can't build the a500_defconfig, because the Makefile will
stomp whatever value you have in your env. for CROSS_COMPILE.
This shows up since the kernel.org toolchains for parisc-64
do not have the "-gnu" prefix, and so you run into it always
saying hppa64-linux-gnu-gcc not found, regardless of the fact
you've not got "-gnu" put anywhere into CROSS_COMPILE.
[1] ftp://ftp.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.2/
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 55cca1d..cefff6d 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -31,7 +31,9 @@ ifdef CONFIG_64BIT
UTS_MACHINE := parisc64
CHECKFLAGS += -D__LP64__=1 -m64
WIDTH := 64
-CROSS_COMPILE := hppa64-linux-gnu-
+ifndef CROSS_COMPILE
+ CROSS_COMPILE := hppa64-linux-gnu-
+endif
else # 32-bit
WIDTH :=
endif
--
1.7.9.1
^ permalink raw reply related [flat|nested] 17+ messages in thread* Re: [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-26 23:26 [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit Paul Gortmaker
@ 2012-02-27 0:23 ` Mike Frysinger
2012-02-27 0:30 ` Paul Gortmaker
2012-02-27 15:14 ` John David Anglin
2012-02-27 20:59 ` [PATCH v2] " Paul Gortmaker
2 siblings, 1 reply; 17+ messages in thread
From: Mike Frysinger @ 2012-02-27 0:23 UTC (permalink / raw)
To: Paul Gortmaker
Cc: JBottomley, jejb, kyle, deller, linux-parisc, linux-kernel,
linux-next
[-- Attachment #1: Type: Text/Plain, Size: 322 bytes --]
On Sunday 26 February 2012 18:26:53 Paul Gortmaker wrote:
> --- a/arch/parisc/Makefile
> +++ b/arch/parisc/Makefile
>
> -CROSS_COMPILE := hppa64-linux-gnu-
> +ifndef CROSS_COMPILE
> + CROSS_COMPILE := hppa64-linux-gnu-
> +endif
this should accomplish the same thing in practice:
CROSS_COMPILE ?= hppa64-linux-gnu-
-mike
[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 836 bytes --]
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-27 0:23 ` Mike Frysinger
@ 2012-02-27 0:30 ` Paul Gortmaker
0 siblings, 0 replies; 17+ messages in thread
From: Paul Gortmaker @ 2012-02-27 0:30 UTC (permalink / raw)
To: Mike Frysinger
Cc: JBottomley, jejb, kyle, deller, linux-parisc, linux-kernel,
linux-next
[Re: [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.] On 26/02/2012 (Sun 19:23) Mike Frysinger wrote:
> On Sunday 26 February 2012 18:26:53 Paul Gortmaker wrote:
> > --- a/arch/parisc/Makefile
> > +++ b/arch/parisc/Makefile
> >
> > -CROSS_COMPILE := hppa64-linux-gnu-
> > +ifndef CROSS_COMPILE
> > + CROSS_COMPILE := hppa64-linux-gnu-
> > +endif
>
> this should accomplish the same thing in practice:
> CROSS_COMPILE ?= hppa64-linux-gnu-
Good point, I'll wait for a bit in case I was missing something else
obvious, and then resend.
THanks,
P.
> -mike
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-26 23:26 [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit Paul Gortmaker
2012-02-27 0:23 ` Mike Frysinger
@ 2012-02-27 15:14 ` John David Anglin
2012-02-27 16:28 ` Paul Gortmaker
2012-02-27 20:59 ` [PATCH v2] " Paul Gortmaker
2 siblings, 1 reply; 17+ messages in thread
From: John David Anglin @ 2012-02-27 15:14 UTC (permalink / raw)
To: Paul Gortmaker
Cc: JBottomley, jejb, kyle, deller, linux-parisc, linux-kernel,
linux-next
On 2/26/2012 6:26 PM, Paul Gortmaker wrote:
> Using the 64 bit toolchains from kernel.org[1], one finds that
> you can't build the a500_defconfig, because the Makefile will
> stomp whatever value you have in your env. for CROSS_COMPILE.
>
> This shows up since the kernel.org toolchains for parisc-64
> do not have the "-gnu" prefix, and so you run into it always
> saying hppa64-linux-gnu-gcc not found, regardless of the fact
> you've not got "-gnu" put anywhere into CROSS_COMPILE.
>
> [1] ftp://ftp.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.2/
>
> Signed-off-by: Paul Gortmaker<paul.gortmaker@windriver.com>
>
> diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
> index 55cca1d..cefff6d 100644
> --- a/arch/parisc/Makefile
> +++ b/arch/parisc/Makefile
> @@ -31,7 +31,9 @@ ifdef CONFIG_64BIT
> UTS_MACHINE := parisc64
> CHECKFLAGS += -D__LP64__=1 -m64
> WIDTH := 64
> -CROSS_COMPILE := hppa64-linux-gnu-
> +ifndef CROSS_COMPILE
> + CROSS_COMPILE := hppa64-linux-gnu-
> +endif
> else # 32-bit
> WIDTH :=
> endif
This change breaks native builds. So, I assume CROSS_COMPILE must be
previously defined.
I couldn't figure out where it is defined. CONFIG_CROSS_COMPILE in my
.config was an empty string and CROSS_COMPILE was not defined in my
build environment.
The default toolchain prefix on Debian systems contains "gnu-".
Given that users can use CONFIG_CROSS_COMPILE or set CROSS_COMPILE
in their build env, maybe setting CROSS_COMPILE in the Makefile is a
mistake.
Dave
--
John David Anglin dave.anglin@bell.net
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-27 15:14 ` John David Anglin
@ 2012-02-27 16:28 ` Paul Gortmaker
2012-02-27 16:45 ` John David Anglin
0 siblings, 1 reply; 17+ messages in thread
From: Paul Gortmaker @ 2012-02-27 16:28 UTC (permalink / raw)
To: John David Anglin
Cc: JBottomley, jejb, kyle, deller, linux-parisc, linux-kernel,
linux-next
On 12-02-27 10:14 AM, John David Anglin wrote:
> On 2/26/2012 6:26 PM, Paul Gortmaker wrote:
>> Using the 64 bit toolchains from kernel.org[1], one finds that
>> you can't build the a500_defconfig, because the Makefile will
>> stomp whatever value you have in your env. for CROSS_COMPILE.
>>
>> This shows up since the kernel.org toolchains for parisc-64
>> do not have the "-gnu" prefix, and so you run into it always
>> saying hppa64-linux-gnu-gcc not found, regardless of the fact
>> you've not got "-gnu" put anywhere into CROSS_COMPILE.
>>
>> [1] ftp://ftp.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.2/
>>
>> Signed-off-by: Paul Gortmaker<paul.gortmaker@windriver.com>
>>
>> diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
>> index 55cca1d..cefff6d 100644
>> --- a/arch/parisc/Makefile
>> +++ b/arch/parisc/Makefile
>> @@ -31,7 +31,9 @@ ifdef CONFIG_64BIT
>> UTS_MACHINE := parisc64
>> CHECKFLAGS += -D__LP64__=1 -m64
>> WIDTH := 64
>> -CROSS_COMPILE := hppa64-linux-gnu-
>> +ifndef CROSS_COMPILE
>> + CROSS_COMPILE := hppa64-linux-gnu-
>> +endif
>> else # 32-bit
>> WIDTH :=
>> endif
> This change breaks native builds. So, I assume CROSS_COMPILE must be
> previously defined.
You lost me here. As in a native 32bit env. doing a build for the
64 bit case is setting CROSS_COMPILE?
>
> I couldn't figure out where it is defined. CONFIG_CROSS_COMPILE in my
> .config was an empty string and CROSS_COMPILE was not defined in my
> build environment.
>
> The default toolchain prefix on Debian systems contains "gnu-".
>
> Given that users can use CONFIG_CROSS_COMPILE or set CROSS_COMPILE
> in their build env, maybe setting CROSS_COMPILE in the Makefile is a
> mistake.
Yeah, I'd support a complete nuke-and-pave of the whole Makefile
chunk as well. It does seem redundant and causes more issues than
it solves.
Paul.
>
> Dave
>
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-27 16:28 ` Paul Gortmaker
@ 2012-02-27 16:45 ` John David Anglin
0 siblings, 0 replies; 17+ messages in thread
From: John David Anglin @ 2012-02-27 16:45 UTC (permalink / raw)
To: Paul Gortmaker
Cc: JBottomley, jejb, kyle, deller, linux-parisc, linux-kernel,
linux-next
On 2/27/2012 11:28 AM, Paul Gortmaker wrote:
> On 12-02-27 10:14 AM, John David Anglin wrote:
>> > On 2/26/2012 6:26 PM, Paul Gortmaker wrote:
>>> >> Using the 64 bit toolchains from kernel.org[1], one finds that
>>> >> you can't build the a500_defconfig, because the Makefile will
>>> >> stomp whatever value you have in your env. for CROSS_COMPILE.
>>> >>
>>> >> This shows up since the kernel.org toolchains for parisc-64
>>> >> do not have the "-gnu" prefix, and so you run into it always
>>> >> saying hppa64-linux-gnu-gcc not found, regardless of the fact
>>> >> you've not got "-gnu" put anywhere into CROSS_COMPILE.
>>> >>
>>> >> [1]ftp://ftp.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.2/
>>> >>
>>> >> Signed-off-by: Paul Gortmaker<paul.gortmaker@windriver.com>
>>> >>
>>> >> diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
>>> >> index 55cca1d..cefff6d 100644
>>> >> --- a/arch/parisc/Makefile
>>> >> +++ b/arch/parisc/Makefile
>>> >> @@ -31,7 +31,9 @@ ifdef CONFIG_64BIT
>>> >> UTS_MACHINE := parisc64
>>> >> CHECKFLAGS += -D__LP64__=1 -m64
>>> >> WIDTH := 64
>>> >> -CROSS_COMPILE := hppa64-linux-gnu-
>>> >> +ifndef CROSS_COMPILE
>>> >> + CROSS_COMPILE := hppa64-linux-gnu-
>>> >> +endif
>>> >> else # 32-bit
>>> >> WIDTH :=
>>> >> endif
>> > This change breaks native builds. So, I assume CROSS_COMPILE must be
>> > previously defined.
> You lost me here. As in a native 32bit env. doing a build for the
> 64 bit case is setting CROSS_COMPILE?
>
Yes, native hppa is 32 bit . Building a 64-bit kernel with CONFIG_64BIT
causes the
setting of CROSS_COMPILE and the selection of hppa64-linux-gnu-gcc, etc.
If CROSS_COMPILE wasn't previously defined, your change wouldn't have have
affected the 64-bit build.
Dave
--
John David Anglin dave.anglin@bell.net
^ permalink raw reply [flat|nested] 17+ messages in thread
* [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-26 23:26 [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit Paul Gortmaker
2012-02-27 0:23 ` Mike Frysinger
2012-02-27 15:14 ` John David Anglin
@ 2012-02-27 20:59 ` Paul Gortmaker
2012-02-27 21:41 ` James Bottomley
2 siblings, 1 reply; 17+ messages in thread
From: Paul Gortmaker @ 2012-02-27 20:59 UTC (permalink / raw)
To: JBottomley, jejb, kyle, deller
Cc: vapier, dave.anglin, linux-parisc, linux-kernel, linux-next,
Paul Gortmaker
Using the 64 bit toolchains from kernel.org[1], one finds that
you can't build the a500_defconfig, because the Makefile will
stomp whatever value you have in your env. for CROSS_COMPILE.
This shows up since the kernel.org toolchains for parisc-64
do not have the "-gnu" prefix, and so you run into it always
saying hppa64-linux-gnu-gcc not found, regardless of the fact
you've not got "-gnu" put anywhere into CROSS_COMPILE.
Since you can set CROSS_COMPILE from the environment and/or set
it in your .config file, there really is no need for it to be
poked at by the Makefile at all. So just delete it.
[1] ftp://ftp.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.5.2/
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
[v2: no ifdef/endif -- just delete the offending line.]
diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 55cca1d..a533367 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -31,7 +31,6 @@ ifdef CONFIG_64BIT
UTS_MACHINE := parisc64
CHECKFLAGS += -D__LP64__=1 -m64
WIDTH := 64
-CROSS_COMPILE := hppa64-linux-gnu-
else # 32-bit
WIDTH :=
endif
--
1.7.9.1
^ permalink raw reply related [flat|nested] 17+ messages in thread
* Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-27 20:59 ` [PATCH v2] " Paul Gortmaker
@ 2012-02-27 21:41 ` James Bottomley
2012-02-27 22:03 ` James Bottomley
0 siblings, 1 reply; 17+ messages in thread
From: James Bottomley @ 2012-02-27 21:41 UTC (permalink / raw)
To: Paul Gortmaker
Cc: kyle@mcmartin.ca, deller@gmx.de, vapier@gentoo.org,
dave.anglin@bell.net, linux-parisc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-27 21:41 ` James Bottomley
@ 2012-02-27 22:03 ` James Bottomley
2012-02-28 1:04 ` Mike Frysinger
0 siblings, 1 reply; 17+ messages in thread
From: James Bottomley @ 2012-02-27 22:03 UTC (permalink / raw)
To: Paul Gortmaker
Cc: kyle@mcmartin.ca, deller@gmx.de, vapier@gentoo.org,
dave.anglin@bell.net, linux-parisc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-27 22:03 ` James Bottomley
@ 2012-02-28 1:04 ` Mike Frysinger
2012-02-28 3:17 ` James Bottomley
0 siblings, 1 reply; 17+ messages in thread
From: Mike Frysinger @ 2012-02-28 1:04 UTC (permalink / raw)
To: James Bottomley
Cc: Paul Gortmaker, kyle@mcmartin.ca, deller@gmx.de,
dave.anglin@bell.net, linux-parisc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org
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On Monday 27 February 2012 17:03:10 James Bottomley wrote:
> --- a/arch/parisc/Makefile
> +++ b/arch/parisc/Makefile
>
> -CROSS_COMPILE := hppa64-linux-gnu-
> +
> +# if no default set, try to find the corresponding 64 bit compiler
> +ifeq ($(CROSS_COMPILE),)
> +CROSS_COMPILE := $(shell $(CC) -dumpmachine | sed s/hppa-\\\(.*\\\)/hppa64-\\1-/)
> +endif
fails when using "hppa2.0-xxx". perhaps:
CROSS_COMPILE ?= $(shell $(CC) -dumpmachine | sed 's/^hppa[^-]*-/hppa64-/')
don't even need the ifeq check then
-mike
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-28 1:04 ` Mike Frysinger
@ 2012-02-28 3:17 ` James Bottomley
2012-02-28 6:06 ` Mike Frysinger
0 siblings, 1 reply; 17+ messages in thread
From: James Bottomley @ 2012-02-28 3:17 UTC (permalink / raw)
To: Mike Frysinger
Cc: Paul Gortmaker, kyle@mcmartin.ca, deller@gmx.de,
dave.anglin@bell.net, linux-parisc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org
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dHkuDQoNCkphbWVzDQoNCg==
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-28 3:17 ` James Bottomley
@ 2012-02-28 6:06 ` Mike Frysinger
2012-02-28 14:10 ` James Bottomley
0 siblings, 1 reply; 17+ messages in thread
From: Mike Frysinger @ 2012-02-28 6:06 UTC (permalink / raw)
To: James Bottomley
Cc: Paul Gortmaker, kyle@mcmartin.ca, deller@gmx.de,
dave.anglin@bell.net, linux-parisc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org
[-- Attachment #1: Type: Text/Plain, Size: 1211 bytes --]
On Monday 27 February 2012 22:17:01 James Bottomley wrote:
> On Mon, 2012-02-27 at 20:04 -0500, Mike Frysinger wrote:
> > On Monday 27 February 2012 17:03:10 James Bottomley wrote:
> > > --- a/arch/parisc/Makefile
> > > +++ b/arch/parisc/Makefile
> > >
> > > -CROSS_COMPILE := hppa64-linux-gnu-
> > > +
> > > +# if no default set, try to find the corresponding 64 bit compiler
> > > +ifeq ($(CROSS_COMPILE),)
> > > +CROSS_COMPILE := $(shell $(CC) -dumpmachine | sed
> > > s/hppa-\\\(.*\\\)/hppa64-\\1-/) +endif
> >
> > fails when using "hppa2.0-xxx". perhaps:
> > CROSS_COMPILE ?= $(shell $(CC) -dumpmachine | sed
> > 's/^hppa[^-]*-/hppa64-/')
> >
> > don't even need the ifeq check then
>
> How is that different from Carlos' suggestion?
sorry, but i'm not seeing any e-mails from Carlos in this thread. what is his
suggestion ?
> The reason it doesn't work is the same ... CROSS_COMPILE is defined to be
> empty.
my suggestion was purely an incremental improvement on the patch you posted.
it improves two things:
- detection when the default tuple is hppa2.0-xxx rather than hppa-xxx
- one line for set-variable-only-when-its-unset rather than three lines
-mike
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^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-28 6:06 ` Mike Frysinger
@ 2012-02-28 14:10 ` James Bottomley
2012-02-28 15:21 ` Mike Frysinger
0 siblings, 1 reply; 17+ messages in thread
From: James Bottomley @ 2012-02-28 14:10 UTC (permalink / raw)
To: Mike Frysinger
Cc: Paul Gortmaker, kyle@mcmartin.ca, deller@gmx.de,
dave.anglin@bell.net, linux-parisc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org
On Tue, 2012-02-28 at 01:06 -0500, Mike Frysinger wrote:
> On Monday 27 February 2012 22:17:01 James Bottomley wrote:
> > On Mon, 2012-02-27 at 20:04 -0500, Mike Frysinger wrote:
> > > On Monday 27 February 2012 17:03:10 James Bottomley wrote:
> > > > --- a/arch/parisc/Makefile
> > > > +++ b/arch/parisc/Makefile
> > > >
> > > > -CROSS_COMPILE := hppa64-linux-gnu-
> > > > +
> > > > +# if no default set, try to find the corresponding 64 bit compiler
> > > > +ifeq ($(CROSS_COMPILE),)
> > > > +CROSS_COMPILE := $(shell $(CC) -dumpmachine | sed
> > > > s/hppa-\\\(.*\\\)/hppa64-\\1-/) +endif
> > >
> > > fails when using "hppa2.0-xxx". perhaps:
Is that a valid prefix? I was thinking hppa32 might be, but hppa2.0 is
supposed to be hppa-xxx with -mpa-risc-2-0.
But anyway, I think being clever and removing unused stuff is likely
orthogonal to the first patch which is just making it all work.
> > > CROSS_COMPILE ?= $(shell $(CC) -dumpmachine | sed
> > > 's/^hppa[^-]*-/hppa64-/')
> > >
> > > don't even need the ifeq check then
> >
> > How is that different from Carlos' suggestion?
>
> sorry, but i'm not seeing any e-mails from Carlos in this thread. what is his
> suggestion ?
Actually, I misspoke, it was your suggestion in the first thread.
> > The reason it doesn't work is the same ... CROSS_COMPILE is defined to be
> > empty.
>
> my suggestion was purely an incremental improvement on the patch you posted.
> it improves two things:
> - detection when the default tuple is hppa2.0-xxx rather than hppa-xxx
> - one line for set-variable-only-when-its-unset rather than three lines
> -mike
It can't be done ... defined but empty is different from not defined in
makefiles (ifdef or ?= only checks for not defined). CROSS_COMPILE gets
automatically defined by the top level Makefile ... that's why we need a
check for empty not a check for not defined.
James
^ permalink raw reply [flat|nested] 17+ messages in thread
* Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-28 14:10 ` James Bottomley
@ 2012-02-28 15:21 ` Mike Frysinger
2012-02-28 15:33 ` John David Anglin
0 siblings, 1 reply; 17+ messages in thread
From: Mike Frysinger @ 2012-02-28 15:21 UTC (permalink / raw)
To: James Bottomley
Cc: Paul Gortmaker, kyle@mcmartin.ca, deller@gmx.de,
dave.anglin@bell.net, linux-parisc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org
[-- Attachment #1: Type: Text/Plain, Size: 2230 bytes --]
On Tuesday 28 February 2012 09:10:45 James Bottomley wrote:
> On Tue, 2012-02-28 at 01:06 -0500, Mike Frysinger wrote:
> > On Monday 27 February 2012 22:17:01 James Bottomley wrote:
> > > On Mon, 2012-02-27 at 20:04 -0500, Mike Frysinger wrote:
> > > > On Monday 27 February 2012 17:03:10 James Bottomley wrote:
> > > > > --- a/arch/parisc/Makefile
> > > > > +++ b/arch/parisc/Makefile
> > > > >
> > > > > -CROSS_COMPILE := hppa64-linux-gnu-
> > > > > +
> > > > > +# if no default set, try to find the corresponding 64 bit compiler
> > > > > +ifeq ($(CROSS_COMPILE),)
> > > > > +CROSS_COMPILE := $(shell $(CC) -dumpmachine | sed
> > > > > s/hppa-\\\(.*\\\)/hppa64-\\1-/) +endif
> > > >
> > > > fails when using "hppa2.0-xxx". perhaps:
>
> Is that a valid prefix? I was thinking hppa32 might be, but hppa2.0 is
> supposed to be hppa-xxx with -mpa-risc-2-0.
we've been using hppa2.0 for years. gnuconfig certainly recognizes it:
$ grep hppa /usr/share/gnuconfig/config.sub
| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
and i've seen diff projects key off of the hppa2.0* to enable newer features by
default.
> But anyway, I think being clever and removing unused stuff is likely
> orthogonal to the first patch which is just making it all work.
sure, but your new patch added the sed :)
> > > The reason it doesn't work is the same ... CROSS_COMPILE is defined to
> > > be empty.
> >
> > my suggestion was purely an incremental improvement on the patch you
> > posted.
> >
> > it improves two things:
> > - detection when the default tuple is hppa2.0-xxx rather than hppa-xxx
> > - one line for set-variable-only-when-its-unset rather than three lines
>
> It can't be done ... defined but empty is different from not defined in
> makefiles (ifdef or ?= only checks for not defined). CROSS_COMPILE gets
> automatically defined by the top level Makefile ... that's why we need a
> check for empty not a check for not defined.
yeah, OK ... this behavior changed from what i was remembering. ?= used to
work until the top level Makefile was improved.
-mike
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^ permalink raw reply [flat|nested] 17+ messages in thread* Re: [PATCH v2] parisc: dont unconditionally override CROSS_COMPILE for 64 bit.
2012-02-28 15:21 ` Mike Frysinger
@ 2012-02-28 15:33 ` John David Anglin
[not found] ` <CANEJEGv2Zgtd8TGOzSNO8opMLQT8RsGRP=m2rBPUBBOJ9f+fKQ@mail.gmail.com>
0 siblings, 1 reply; 17+ messages in thread
From: John David Anglin @ 2012-02-28 15:33 UTC (permalink / raw)
To: Mike Frysinger
Cc: James Bottomley, Paul Gortmaker, kyle@mcmartin.ca, deller@gmx.de,
linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-next@vger.kernel.org
On 2/28/2012 10:21 AM, Mike Frysinger wrote:
> we've been using hppa2.0 for years. gnuconfig certainly recognizes it:
> $ grep hppa /usr/share/gnuconfig/config.sub
> | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
> | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
>
> and i've seen diff projects key off of the hppa2.0* to enable newer features by
> default.
Some of the above are specific to HP-UX, but hppa1.1, hppa2.0, hppa and
hppa64 are
valid for Linux based on config.guess.
Dave
--
John David Anglin dave.anglin@bell.net
^ permalink raw reply [flat|nested] 17+ messages in thread
end of thread, other threads:[~2012-02-28 19:54 UTC | newest]
Thread overview: 17+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-02-26 23:26 [PATCH] parisc: dont unconditionally override CROSS_COMPILE for 64 bit Paul Gortmaker
2012-02-27 0:23 ` Mike Frysinger
2012-02-27 0:30 ` Paul Gortmaker
2012-02-27 15:14 ` John David Anglin
2012-02-27 16:28 ` Paul Gortmaker
2012-02-27 16:45 ` John David Anglin
2012-02-27 20:59 ` [PATCH v2] " Paul Gortmaker
2012-02-27 21:41 ` James Bottomley
2012-02-27 22:03 ` James Bottomley
2012-02-28 1:04 ` Mike Frysinger
2012-02-28 3:17 ` James Bottomley
2012-02-28 6:06 ` Mike Frysinger
2012-02-28 14:10 ` James Bottomley
2012-02-28 15:21 ` Mike Frysinger
2012-02-28 15:33 ` John David Anglin
[not found] ` <CANEJEGv2Zgtd8TGOzSNO8opMLQT8RsGRP=m2rBPUBBOJ9f+fKQ@mail.gmail.com>
2012-02-28 18:37 ` Mike Frysinger
2012-02-28 19:54 ` Sam Ravnborg
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