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Old 08-13-2012, 08:36 PM
Dave Anderson
 
Default ARM and X86 eppic.so builds from X86_64 host

----- Original Message -----
> > ----- Original Message -----
> >>
> >>
> >> ----- Original Message -----
> >> > Hi,
> >> >
> >> > Here's an alternative patch for your consideration, which makes it
> >> > possible to point to e.g. a local eppic git.
> >> >
> >> > It also builds ARM with '-m32'. This change is not enough to achieve
> >> > that however. Similar tweaks are needed in eppic itself.
> >> >
> >> > Regards,
> >> > Per
> >>
> >> Per,
> >>
> >> Sorry I got to Cliff's patch before yours -- so can you rework
> >> your patch using the version of eppic.mk that is attached to:
> >>
> >> Re: [Crash-utility] [PATCH] allow various git command locations
> >> https://www.redhat.com/archives/crash-utility/2012-August/msg00012.html
> >>
> >> Thanks,
> >> Dave
> >
> > OK, I've shoehorned the EPPIC_GIT_URL environment variable check
> > into eppic.mk.
> >
>
> Sorry I took so long. Vacation... =o)
>
> So, you already put it in there? Thanks.
>
> > But for now I'm leaving out your -m32 addition for ARM builds
> > until there's a complete solution for ARM. Note that when I
> > put the -m32 patch in place, the compile fails when building
> > ARM on an x86_64 host:
> >
> > gcc -g -I.. -Ieppic/libeppic -I../gdb-7.3.1/bfd
> > -I../gdb-7.3.1/include -I../gdb-7.3.1/gdb
> > -I../gdb-7.3.1/gdb/config -I../gdb-7.3.1/gdb/common -I../gdb-7.3.1
> > -nostartfiles -shared -rdynamic -o eppic.so
> > eppic/applications/crash/eppic.c -fPIC -DARM -m32 -DGDB_7_3_1
> > -Leppic/libeppic -leppic
> > eppic/applications/crash/eppic.c: In function ‘apigetval’:
> > eppic/applications/crash/eppic.c:474: warning: cast from pointer to
> > integer of different size
> > /usr/bin/ld: skipping incompatible eppic/libeppic/libeppic.a when
> > searching for -leppic
> > /usr/bin/ld: cannot find -leppic
> > collect2: ld returned 1 exit status
> > make[4]: [eppic.so] Error 1 (ignored)
> >
> > whereas without the -m32 at least it builds something (albeit
> > probably useless).
> >
>
> I think we might have a catch 22 on our hands. The reason it fails is
> that the eppic library doesn't get built with -m32, but if we start by
> modifying the eppic git the build will fail because eppic is 32 bit
> and the crash extension is 64 bit. I've attached the change I made to
> the eppic git.
>
> /Per

OK, that works. In fact, the same thing needs to be done for building
a 32-bit X86 eppic.so from an x86_64 host after having done the intial
build with "make target=X86".

I'll change eppic.mk (attached) to look like this instead of embedding the ifeq's:

TARGET_FLAGS = -D$(TARGET)
ifeq ($(TARGET), PPC64)
TARGET_FLAGS += -m64
endif
ifeq ($(TARGET), ARM)
TARGET_FLAGS += -m32
endif
ifeq ($(TARGET), X86)
TARGET_FLAGS += -m32
endif

And for the eppic/libeppic/Makefile, the analogous change should also
be done for X86:

$ git diff
diff --git a/libeppic/Makefile b/libeppic/Makefile
index f323eab..3b6d212 100644
--- a/libeppic/Makefile
+++ b/libeppic/Makefile
@@ -28,6 +28,13 @@ CFLAGS += -O0 -g -fPIC
ifeq ($(TARGET), PPC64)
CFLAGS += -m64
endif
+ifeq ($(TARGET), ARM)
+ CFLAGS += -m32
+endif
+ifeq ($(TARGET), X86)
+ CFLAGS += -m32
+endif
+

CFILES = eppic_util.c eppic_node.c eppic_var.c eppic_func.c eppic_str.c
eppic_op.c eppic_num.c eppic_stat.c eppic_builtin.c eppic_type.c
$

Luc, can you apply the attached eppic-m32.patch to the eppic git tree?

Thanks,
Dave


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Old 08-13-2012, 08:37 PM
Dave Anderson
 
Default ARM and X86 eppic.so builds from X86_64 host

Luc,

Our emails crossed -- can you also add the -m32 flag for X86 as well?

Thanks,
Dave

----- Original Message -----
>
>
> ----- Original Message -----
> > > ----- Original Message -----
> > >>
> > >>
> > >> ----- Original Message -----
> > >> > Hi,
> > >> >
> > >> > Here's an alternative patch for your consideration, which
> > >> > makes it
> > >> > possible to point to e.g. a local eppic git.
> > >> >
> > >> > It also builds ARM with '-m32'. This change is not enough to
> > >> > achieve
> > >> > that however. Similar tweaks are needed in eppic itself.
> > >> >
> > >> > Regards,
> > >> > Per
> > >>
> > >> Per,
> > >>
> > >> Sorry I got to Cliff's patch before yours -- so can you rework
> > >> your patch using the version of eppic.mk that is attached to:
> > >>
> > >> Re: [Crash-utility] [PATCH] allow various git command
> > >> locations
> > >> https://www.redhat.com/archives/crash-utility/2012-August/msg00012.html
> > >>
> > >> Thanks,
> > >> Dave
> > >
> > > OK, I've shoehorned the EPPIC_GIT_URL environment variable check
> > > into eppic.mk.
> > >
> >
> > Sorry I took so long. Vacation... =o)
> >
> > So, you already put it in there? Thanks.
> >
> > > But for now I'm leaving out your -m32 addition for ARM builds
> > > until there's a complete solution for ARM. Note that when I
> > > put the -m32 patch in place, the compile fails when building
> > > ARM on an x86_64 host:
> > >
> > > gcc -g -I.. -Ieppic/libeppic -I../gdb-7.3.1/bfd
> > > -I../gdb-7.3.1/include -I../gdb-7.3.1/gdb
> > > -I../gdb-7.3.1/gdb/config -I../gdb-7.3.1/gdb/common
> > > -I../gdb-7.3.1
> > > -nostartfiles -shared -rdynamic -o eppic.so
> > > eppic/applications/crash/eppic.c -fPIC -DARM -m32 -DGDB_7_3_1
> > > -Leppic/libeppic -leppic
> > > eppic/applications/crash/eppic.c: In function ‘apigetval’:
> > > eppic/applications/crash/eppic.c:474: warning: cast from pointer
> > > to
> > > integer of different size
> > > /usr/bin/ld: skipping incompatible eppic/libeppic/libeppic.a when
> > > searching for -leppic
> > > /usr/bin/ld: cannot find -leppic
> > > collect2: ld returned 1 exit status
> > > make[4]: [eppic.so] Error 1 (ignored)
> > >
> > > whereas without the -m32 at least it builds something (albeit
> > > probably useless).
> > >
> >
> > I think we might have a catch 22 on our hands. The reason it fails
> > is
> > that the eppic library doesn't get built with -m32, but if we start
> > by
> > modifying the eppic git the build will fail because eppic is 32 bit
> > and the crash extension is 64 bit. I've attached the change I made
> > to
> > the eppic git.
> >
> > /Per
>
> OK, that works. In fact, the same thing needs to be done for
> building
> a 32-bit X86 eppic.so from an x86_64 host after having done the
> intial
> build with "make target=X86".
>
> I'll change eppic.mk (attached) to look like this instead of
> embedding the ifeq's:
>
> TARGET_FLAGS = -D$(TARGET)
> ifeq ($(TARGET), PPC64)
> TARGET_FLAGS += -m64
> endif
> ifeq ($(TARGET), ARM)
> TARGET_FLAGS += -m32
> endif
> ifeq ($(TARGET), X86)
> TARGET_FLAGS += -m32
> endif
>
> And for the eppic/libeppic/Makefile, the analogous change should also
> be done for X86:
>
> $ git diff
> diff --git a/libeppic/Makefile b/libeppic/Makefile
> index f323eab..3b6d212 100644
> --- a/libeppic/Makefile
> +++ b/libeppic/Makefile
> @@ -28,6 +28,13 @@ CFLAGS += -O0 -g -fPIC
> ifeq ($(TARGET), PPC64)
> CFLAGS += -m64
> endif
> +ifeq ($(TARGET), ARM)
> + CFLAGS += -m32
> +endif
> +ifeq ($(TARGET), X86)
> + CFLAGS += -m32
> +endif
> +
>
> CFILES = eppic_util.c eppic_node.c eppic_var.c eppic_func.c
> eppic_str.c
> eppic_op.c eppic_num.c eppic_stat.c eppic_builtin.c
> eppic_type.c
> $
>
> Luc, can you apply the attached eppic-m32.patch to the eppic git
> tree?
>
> Thanks,
> Dave
>
>
>

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Old 08-13-2012, 08:42 PM
"Luc Chouinard"
 
Default ARM and X86 eppic.so builds from X86_64 host

Done.

> -----Original Message-----
> From: Dave Anderson [mailto:anderson@redhat.com]
> Sent: Monday, August 13, 2012 4:38 PM
> To: Discussion list for crash utility usage, maintenance and development
> Cc: Luc Chouinard
> Subject: Re: ARM and X86 eppic.so builds from X86_64 host
>
>
> Luc,
>
> Our emails crossed -- can you also add the -m32 flag for X86 as well?
>
> Thanks,
> Dave
>
> ----- Original Message -----
> >
> >
> > ----- Original Message -----
> > > > ----- Original Message -----
> > > >>
> > > >>
> > > >> ----- Original Message -----
> > > >> > Hi,
> > > >> >
> > > >> > Here's an alternative patch for your consideration, which makes
> > > >> > it possible to point to e.g. a local eppic git.
> > > >> >
> > > >> > It also builds ARM with '-m32'. This change is not enough to
> > > >> > achieve that however. Similar tweaks are needed in eppic
> > > >> > itself.
> > > >> >
> > > >> > Regards,
> > > >> > Per
> > > >>
> > > >> Per,
> > > >>
> > > >> Sorry I got to Cliff's patch before yours -- so can you rework
> > > >> your patch using the version of eppic.mk that is attached to:
> > > >>
> > > >> Re: [Crash-utility] [PATCH] allow various git command
> > > >> locations
> > > >>
> > > >> https://www.redhat.com/archives/crash-utility/2012-August/msg0001
> > > >> 2.html
> > > >>
> > > >> Thanks,
> > > >> Dave
> > > >
> > > > OK, I've shoehorned the EPPIC_GIT_URL environment variable check
> > > > into eppic.mk.
> > > >
> > >
> > > Sorry I took so long. Vacation... =o)
> > >
> > > So, you already put it in there? Thanks.
> > >
> > > > But for now I'm leaving out your -m32 addition for ARM builds
> > > > until there's a complete solution for ARM. Note that when I put
> > > > the -m32 patch in place, the compile fails when building ARM on an
> > > > x86_64 host:
> > > >
> > > > gcc -g -I.. -Ieppic/libeppic -I../gdb-7.3.1/bfd
> > > > -I../gdb-7.3.1/include -I../gdb-7.3.1/gdb
> > > > -I../gdb-7.3.1/gdb/config -I../gdb-7.3.1/gdb/common
> > > > -I../gdb-7.3.1
> > > > -nostartfiles -shared -rdynamic -o eppic.so
> > > > eppic/applications/crash/eppic.c -fPIC -DARM -m32 -DGDB_7_3_1
> > > > -Leppic/libeppic -leppic
> > > > eppic/applications/crash/eppic.c: In function ‘apigetval’:
> > > > eppic/applications/crash/eppic.c:474: warning: cast from pointer
> > > > to integer of different size
> > > > /usr/bin/ld: skipping incompatible eppic/libeppic/libeppic.a when
> > > > searching for -leppic
> > > > /usr/bin/ld: cannot find -leppic
> > > > collect2: ld returned 1 exit status
> > > > make[4]: [eppic.so] Error 1 (ignored)
> > > >
> > > > whereas without the -m32 at least it builds something (albeit
> > > > probably useless).
> > > >
> > >
> > > I think we might have a catch 22 on our hands. The reason it fails
> > > is that the eppic library doesn't get built with -m32, but if we
> > > start by modifying the eppic git the build will fail because eppic
> > > is 32 bit and the crash extension is 64 bit. I've attached the
> > > change I made to the eppic git.
> > >
> > > /Per
> >
> > OK, that works. In fact, the same thing needs to be done for building
> > a 32-bit X86 eppic.so from an x86_64 host after having done the intial
> > build with "make target=X86".
> >
> > I'll change eppic.mk (attached) to look like this instead of embedding
> > the ifeq's:
> >
> > TARGET_FLAGS = -D$(TARGET)
> > ifeq ($(TARGET), PPC64)
> > TARGET_FLAGS += -m64
> > endif
> > ifeq ($(TARGET), ARM)
> > TARGET_FLAGS += -m32
> > endif
> > ifeq ($(TARGET), X86)
> > TARGET_FLAGS += -m32
> > endif
> >
> > And for the eppic/libeppic/Makefile, the analogous change should also
> > be done for X86:
> >
> > $ git diff
> > diff --git a/libeppic/Makefile b/libeppic/Makefile index
> > f323eab..3b6d212 100644
> > --- a/libeppic/Makefile
> > +++ b/libeppic/Makefile
> > @@ -28,6 +28,13 @@ CFLAGS += -O0 -g -fPIC ifeq ($(TARGET), PPC64)
> > CFLAGS += -m64
> > endif
> > +ifeq ($(TARGET), ARM)
> > + CFLAGS += -m32
> > +endif
> > +ifeq ($(TARGET), X86)
> > + CFLAGS += -m32
> > +endif
> > +
> >
> > CFILES = eppic_util.c eppic_node.c eppic_var.c eppic_func.c
> > eppic_str.c
> > eppic_op.c eppic_num.c eppic_stat.c eppic_builtin.c
> > eppic_type.c
> > $
> >
> > Luc, can you apply the attached eppic-m32.patch to the eppic git tree?
> >
> > Thanks,
> > Dave
> >
> >
> >

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