gcc-4.7.4: libgcc2.h:157: error: unable to emulate 'TF'

[Jan Nieuwenhuizen]

Hi!

I'm working on a full source bootstrap for a GNU system, GuixSD in
particular.  With the Mes 0.16 release I thought it was done, but now it
seems I'm stuck.

Using the MesCC C99 compiler written in Guile Scheme, I compiled tcc-0.9.26
and a tiny Mes C library, barely enough to build

    binutils-2.20.1, gcc-2.95.3, and glibc-2.2.5

Using those tools, I built

    binutils-2.20.1, gcc-4.1.0, and glibc-2.3.6

My attempts to build gcc-4.7.4 are failing, the most common error that I
get is

     i386-unknown-linux-gcc 
--sysroot=/gnu/store/jdjpfzjr2zf3xbf7ssl11ljwpq7spid8-glibc-mesboot-2.3.6/include
   -g -O2 -O2  -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual 
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem 
./include   -fpic -g -DIN_LIBGCC2 -fno-stack-protector   -fpic -I. -I. 
-I../../host-i386-unknown-linux/gcc -I../.././libgcc -I../.././libgcc/. 
-I../.././libgcc/../gcc -I../.././libgcc/../include  -DHAVE_CC_TLS  -DUSE_TLS 
-o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c 
../.././libgcc/libgcc2.c 
     In file included from ../.././libgcc/libgcc2.c:58:
     ../.././libgcc/libgcc2.h:157: error: unable to emulate 'TF'
     ../.././libgcc/libgcc2.h:158: error: unable to emulate 'TC'
     ../.././libgcc/libgcc2.h:161: error: unknown machine mode 
'libgcc_cmp_return'
     ../.././libgcc/libgcc2.h:162: error: unknown machine mode 
'libgcc_shift_count'
     ../.././libgcc/libgcc2.h:372: error: expected '=', ',', ';', 'asm' or 
'__attribute__' before '__muldi3'
     ../.././libgcc/libgcc2.h:373: error: expected '=', ',', ';', 'asm' or 
'__attribute__' before '__divdi3'
     ../.././libgcc/libgcc2.h:374: error: expected '=', ',', ';', 'asm' or 
'__attribute__' before '__udivdi3'
     ../.././libgcc/libgcc2.h:375: error: expected '=', ',', ';', 'asm' or 
'__attribute__' before '__umoddi3'
     ../.././libgcc/libgcc2.h:376: error: expected '=', ',', ';', 'asm' or 
'__attribute__' before '__moddi3'
     ...

Gcc-4.7.4 advertises it can be built with gcc-2.95 and binutils-2.13.1
and glibc-2.2.5.

Since mes 0.16 was released two weeks ago I have tried many things, but
not knowing where this error comes makes progress difficult, e.g.: I
didn't manage to compile any glibc > 2.3.6, but that may not be
necessary?

Greetings,
janneke

-- 
Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
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