EGCS support

[Mark Keates]

(Originally posted to the gnu-help mailing list)

> I'm building a cross m68k-unknown-linux gcc on an i586-pc-cygwin32 host
> (egcs-1.1.2).
> The 'make cross' process runs upto a point of configuring
> m68k-unknown-linux/libiberty.
> (see the attached log file). I have some questions on the results I get
> from xgcc:
> 1) (See specs attachment) I'm suspicious of *startfile, what derives this
> and how is it interpreted?
> 2) (See print-search-dirs attachment) Is something corrupting the search
> paths? 
>    Can this be fixed or doesn't it matter as they refer to the build area?
> 
> I have made changes to the gcc/Makefile (listed in diffs attachment).
> I'm guessing that because of the linux requirements I need to have glibc
> built/installed 
> for the target? Hence the addition of -Dinhibit-libc to the LIBGCC2 flags.
> 
> Bad idea, should I remove this and get glibc working?
> 
> I have been able to successfully build an cross m68k-coff by including 
> newlib after setting up a symbolic link and using the configuration option
> "--with-newlib".
> This gets around the chicken/egg issue, so any ideas of how to get glibc
> built
> for the m68k-unknown-linux? I've used:
> ../glibc-2.2.2/configure --verbose --target=m68k-unknown-linux
> --prefix=/gnu
> but this returns that *** The GNU C library is currently not available for
> this platform.
or:
../glibc-2.2.2/configure --verbose --build=m68k-unknown-linux --prefix=/gnu
creating cache ./config.cache
checking host system type... i586-pc-cygwin
checking sysdep dirs... configure: error: Operating system cygwin is not
supported.

Do I need a different glibc or can I patch the configure files to accept
cygwin?

> Thanks,
> 
> Mark
> 
>  <<config.log>>  <<print-search-dirs>>  <<specs>>  <<diffs>> 
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install: /gnu/lib/gcc-lib/m68k-unknown-linux\egcs-2.91.66\
programs: \ngu\egcs\gcc\m68k-unknown-linux\egcs-2.91.66\;\ngu\egcs\gcc\;\gnu\lib\gcc-lib\m68k-unknown-linux\egcs-2.91.66\;\gnu\lib\gcc-lib\m68k-unknown-linux\;\usr\lib\gcc\m68k-unknown-linux\egcs-2.91.66\;\usr\lib\gcc\m68k-unknown-linux\;\gnu\m68k-unknown-linux\bin\m68k-unknown-linux\egcs-2.91.66\;\gnu\m68k-unknown-linux\bin\
libraries: \ngu\egcs\gcc\m68k-unknown-linux\egcs-2.91.66\;\ngu\egcs\gcc\;\gnu\lib\gcc-lib\m68k-unknown-linux\egcs-2.91.66\;\usr\lib\gcc\m68k-unknown-linux\egcs-2.91.66\;\gnu\m68k-unknown-linux\lib\m68k-unknown-linux\egcs-2.91.66\;\gnu\m68k-unknown-linux\lib\
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*asm:
%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} %{m68040} %{m68060:-m68040}

*asm_final:
%|

*cpp:
%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{!msoft-float:-D__HAVE_68881__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}

*cc1:
%{profile:-p}

*cc1plus:


*endfile:
%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s

*link:
-m m68kelf %{shared}   %{!shared:     %{!static:       %{rdynamic:-export-dynamic}       %{!dynamic-linker*:-dynamic-linker /lib/ld.so.1}}     %{static}}

*lib:
%{shared: -lc}    %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} 	%{profile:-lc_p} %{!profile: -lc}}

*libgcc:
-lgcc

*startfile:
%{!shared:      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} 		       %{!p:%{profile:gcrt1.o%s} 			 %{!profile:crt1.o%s}}}}    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}

*switches_need_spaces:


*signed_char:
%{funsigned-char:-D__CHAR_UNSIGNED__}

*predefines:
-D__ELF__ -Dunix -Dmc68000 -Dmc68020 -Dlinux -Asystem(unix) -Asystem(posix) -Acpu(m68k) -Amachine(m68k)

*cross_compile:
1

*version:
egcs-2.91.66

*multilib:
. ;

*multilib_defaults:


*multilib_extra:


*multilib_matches:


*linker:
collect2