search

jwt27 / build-gcc

Shell scripts to build various gcc cross-compilers (primarily djgpp)
https://jw.h4ck.me/debian/
GNU General Public License v3.0
44 stars 9 forks source link

local build and alt git url support [#2] #10

Closed stsp closed 4 years ago

jwt27 commented 4 years ago

Awesome, that is very quick. My Focal VM hasn't even finished installing yet. I don't think we need a transitional package then for such a short time frame.

jwt27 commented 4 years ago

@skitt What will the new version number be? Can I set Depends: binutils-djgpp (>> 2.33.1-1ubuntu1+1.1) in my control file? edit: also, will your binutils include symlinks from i586-* -> i386-*? If not then I can add a separate package for that.

skitt commented 4 years ago

@jwt27 the Focal version ended up being 2.34-1ubuntu1+1.3. My package includes i586-* symlinks.

jwt27 commented 4 years ago

Thanks. My updated ppa should be live now.

jwt27 commented 4 years ago

We still have some problems:

jw@jw-UbuntuVM:~$ echo 'int main(){}' > nop.c
jw@jw-UbuntuVM:~$ i386-pc-msdosdjgpp-gcc nop.c
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(crt1.o):(.text+0xb8): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(crt1.o):(.text+0x168): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(crt1.o):(.text+0x3ab): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(getenv.o):(.text+0x3): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(putenv.o):(.text+0x43): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(putenv.o):(.text+0x227): more undefined references to `_environ' follow
collect2: error: ld returned 1 exit status

Looks like you're building from the official binutils sources right? Unfortunately that doesn't work, djgpp binutils requires special patches that for some reason aren't being upstreamed. For one the ldscripts end up broken, they are missing the _environ symbol. There are probably other things that break in more subtle ways. You can find these patches at ftp://ftp.delorie.com/pub/djgpp/current/v2gnu/bnu2331s.zip in the djgpp/ directory.

skitt commented 4 years ago

We still have some problems:

jw@jw-UbuntuVM:~$ echo 'int main(){}' > nop.c
jw@jw-UbuntuVM:~$ i386-pc-msdosdjgpp-gcc nop.c
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(crt1.o):(.text+0xb8): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(crt1.o):(.text+0x168): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(crt1.o):(.text+0x3ab): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(getenv.o):(.text+0x3): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(putenv.o):(.text+0x43): undefined reference to `_environ'
/usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/bin/ld: /usr/lib/gcc/i386-pc-msdosdjgpp/9.2.0/../../../../i386-pc-msdosdjgpp/lib/libc.a(putenv.o):(.text+0x227): more undefined references to `_environ' follow
collect2: error: ld returned 1 exit status

Looks like you're building from the official binutils sources right? Unfortunately that doesn't work, djgpp binutils requires special patches that for some reason aren't being upstreamed. For one the ldscripts end up broken, they are missing the _environ symbol. There are probably other things that break in more subtle ways. You can find these patches at ftp://ftp.delorie.com/pub/djgpp/current/v2gnu/bnu2331s.zip in the djgpp/ directory.

Ah, yes, thanks! I had noted at some point that I needed to take those patches into account, but then it slipped my mind... And I was trying to find the source of the _environ issue in the GCC patches :-(.

I’ve added the binutils patches, adapted them to 2.34 (there are very few changes), but they fail some of the built-in test suite. I’m looking into that...

jwt27 commented 4 years ago

And I was trying to find the source of the _environ issue in the GCC patches :-(.

Ha, yes it's not immediately obvious that symbols can come from ldscripts. That took me a while to figure out too.

The djgpp patches don't introduce any additional failures for me. The tests I see failing are:

FAIL: copy with setting section flags 3
FAIL: dotnet-assemblies (ordinary x86 DLL)
FAIL: objdump -p (build)

and all the windres tests but I think that is to be expected (even though they are listed as unexpected)

jwt27 commented 4 years ago

I noticed binutils-djgpp 1.4 with the target-specific patches is now in Focal. Thank you @skitt! Everything works so I think I we can close this now.

skitt commented 4 years ago

I noticed binutils-djgpp 1.4 with the target-specific patches is now in Focal. Thank you @skitt! Everything works so I think I we can close this now.

You’re welcome, thanks for checking! I meant to ping you to let you know, but didn’t.

jwt27 commented 4 years ago

Oh and I meant to ask, did you find out what caused the failing test cases you were seeing?

skitt commented 4 years ago

Oh and I meant to ask, did you find out what caused the failing test cases you were seeing?

Yes, changes to bfd in binutils 2.34 which resulted in null dereferences in code added by the DJGPP-specific patches.