[Vm-dev] [OpenSmalltalk/opensmalltalk-vm] sqUnixEvent.c missing from platforms/unix/vm (#555)
Bruce O'Neel
bruce.oneel at pckswarms.ch
Thu Mar 25 08:43:40 UTC 2021
Hi,
Yea that's right, but, I think that is not where the problem is.
What seems to have happened is that someone got clever with which is included in the beginning of and which must have changed between different versions of Linux. So I'm on what is basically Ubuntu 20.4 and they have played around what __USE_GNU means. Now it seams that the magic #define is _GNU_SOURCE.
The easiest patch I found is below and attached above. I also attached features.h just so you can see the nightmare that has become.
diff --git a/build.linux64x64/[squeak.cog.spur/build/mvm](http://squeak.cog.spur/build/mvm) b/build.linux64x64/[squeak.cog.spur/build/mvm](http://squeak.cog.spur/build/mvm)
index 29b710460..eb67f677e 100755
--- a/build.linux64x64/[squeak.cog.spur/build/mvm](http://squeak.cog.spur/build/mvm)
+++ b/build.linux64x64/[squeak.cog.spur/build/mvm](http://squeak.cog.spur/build/mvm)
@@ -34,7 +34,7 @@ test -f config.h || ../../../platforms/unix/config/configure --without-npsqueak
--with-src=spur64src \
TARGET_ARCH="-m64" \
CC=clang \
- CFLAGS="$CFLAGS" \
+ CFLAGS="$CFLAGS -D_GNU_SOURCE=1" \
LIBS="$LIBS" \
LDFLAGS="$LDFLAGS"
rm -f vm/sqUnixMain.o # nuke version info
I tried to play the same ifdef games currently with __USE_GNU in include_ucontext.h but I was not successful.
This builds both with clang and with gcc on Ubuntu 20.4 on x86_64.
cheers
bruce
> On Wed, Mar 24, 2021 at 11:54:55AM -0700, Eliot Miranda wrote:
> >
> > Hi David,
> >
> > On Mon, Mar 22, 2021 at 4:14 PM David T. Lewis wrote:
> >
> > >
> > > On Mon, Mar 22, 2021 at 11:46:27AM +0100, Bruce O'Neel wrote:
> > > >
> > > >
> > > > Hi,
> > > >
> > > > That fixed one problem I was tripping over on the ARMv8 build.
> > > >
> > > > There still seems to be a problem with the x86-64 build.????
> > > >
> > > > Thanks.
> > > >
> > > > bruce
> > >
> > > I see the same issue on my Linux x86-64 PC. I cannot spot the exact cause
> > > of
> > > the problem, but it seems to have been introduced in this commit:
> > >
> > > commit 6d74c4b652c7780110fe327f97e98aaef5242fbc
> > > Author: Eliot Miranda
> > > Date: Wed Feb 10 21:41:31 2021 -0800
> > >
> > > Revisions to core include files to get EXPORT defined correctly at the
> > > relevant points.
> > > Essentially move the default EXPORT definitions from sq.h to
> > > sqMemoryAccess.h.
> > > Include fbdev support in build.linux32ARMv6 builds and add -m32 to
> > > their CFLAGS
> > > to attempt to get the 32-bit VMs to be compilable on 64-bit ARM. [ci
> > > skip]
> > > cuz new cogit files will arrive soon.
> > >
> > >
> > > The changes seem straightforward, but for some reason the header files must
> > > not be getting included properly.
> > >
> > > Dave
> > >
> > > >
> > > /home/edoneel/tmp/opensmalltalk-vm/platforms/unix/vm/sqUnixMain.c:926:35:
> > > error: use of undeclared identifier 'REG_RBP'
> > >
> >
> > If you have a look at the code here the file is trying to
> > - find out what platform it is on
> > - pull in the relevant version of ucontext.h containing the relevant
> > defines for extracting register values from an interrupt context
> > - print out the registers for a crash report
> > So please look to
> > - find out if platforms/unix/vm/include_ucontext.h is working correctly on
> > this platform
> > - find out what are the platform defines (-E -dM is your friend here)
> > - find out how ucontext.h defines the registers in a ucontext
> >
>
> Hi Eliot,
>
> I think that platforms/unix/vm/include_ucontext.h is working correctly.
> Using -E -dM, I can confirm:
>
> #define __linux__ 1
> #define __x86_64 1
>
> Also, include_ucontext.h was not modified in commit 924a24bb54870a621c5283f23631261d5a792000
> which is where I think the issue originates(?).
>
> So there is something else going wrong with the includes for Linux, but
> I am blind and cannot spot it.
>
> Dave
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