llvm dev - Nov 2008 - [LLVMdev] llvm-gcc fails to build libgcc when built with itself

Hello,

I’m trying the following thing:
• build and install llvm with mgcc (system compiler)
• build and install llvm-gcc with mgcc
• build llvm with llvm-gcc
• deinstall llvm(old), install llvm(new)
• build llvm-gcc with llvm-gcc(old)
• deinstall llvm-gcc(old), install llvm-gcc(new)

However, I have the problem that the llvm-gcc(new) does not work: after
it is compiled, it tries to build libgcc2 with itself (llvm-gcc(new)),
which fails on a few files:

/usr/ports/lang/llvm-gcc/w-llvm-gcc4.2-58935-1/llvm-gcc4.2/host-i386-ecce-mirbsd10/gcc/xgcc
-B/usr/ports/lang/llvm-gcc/w-llvm-gcc4.2-58935-1/llvm-gcc4.2/host-i386-ecce-mirbsd10/gcc/
-B/usr/mpkg/i386-ecce-mirbsd10/bin/ -B/usr/mpkg/i386-ecce-mirbsd10/lib/ -isystem
/usr/mpkg/i386-ecce-mirbsd10/include -isystem
/usr/mpkg/i386-ecce-mirbsd10/sys-include  -O2  -O2 -O2 -pipe -std=gnu99  -O1
-Wformat -fwrapv -fno-strict-aliasing -march=i486 -mtune=pentium-mmx
-mpreferred-stack-boundary=2  -DIN_GCC    -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition  -isystem
./include  -pthread -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED
-I. -I. -I../.././gcc -I../.././gcc/. -I../.././gcc/../include
-I../.././gcc/../libcpp/include  -I../.././gcc/../libdecnumber -I../libdecnumber
-I/usr/mpkg/include -I/usr/mpkg/include -DL_powisf2 -c ../.././gcc/libgcc2.c -o
libgcc/./_powisf2.o

This command seems to hang spinning or something:

  PID USERNAME PRI NICE  SIZE   RES STATE    WAIT     TIME    CPU COMMAND
16398 tg        64    0   10M 6948K run      -       14:36 93.60% cc1

Appending “-emit-llvm” to the compile command does not help.

Preprocessed output (-E -dD) is attached.

bye,
//mirabilos
-- 
Sometimes they [people] care too much: pretty printers [and syntax highligh-
ting, d.A.] mechanically produce pretty output that accentuates irrelevant
detail in the program, which is as sensible as putting all the prepositions
in English text in bold font.	-- Rob Pike in "Notes on Programming in
C"
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Dixi quod…
>• build llvm with llvm-gcc
>• deinstall llvm(old), install llvm(new)
At this point, the clang(new) built is working just fine though.
>• build llvm-gcc with llvm-gcc(old)
[…]
>16398 tg        64    0   10M 6948K run      -       14:36 93.60% cc1
Aborted after more than 32 CPU minutes on Pentium-M 1.4 GHz.

bye,
//mirabilos
-- 
I believe no one can invent an algorithm. One just happens to hit upon it
when God enlightens him. Or only God invents algorithms, we merely copy them.
If you don't believe in God, just consider God as Nature if you won't
deny
existence.		-- Coywolf Qi Hunt

Can you bootstrap llvm-gcc (configure with --enable-bootstrap)?

Ciao,

Duncan.

Duncan Sands dixit:
>Can you bootstrap llvm-gcc (configure with --enable-bootstrap)?
Nope, probably because it uses the host C++ compiler instead of the
one built in stage1 during stage2:

/usr/ports/lang/llvm-gcc/w-llvm-gcc4.2-58935-1/llvm-gcc4.2/host-i386-ecce-mirbsd10/prev-gcc/xgcc
-B/usr/ports/lang/llvm-gcc/w-llvm-gcc4.2-58935-1/llvm-gcc4.2/host-i386-ecce-mirbsd10/prev-gcc/
-B/usr/mpkg/i386-ecce-mirbsd10/bin/ -c   -g -O2 -DIN_GCC   -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-Wold-style-definition -Wmissing-format-attribute    -DHAVE_CONFIG_H -I. -I.
-I../.././gcc -I../.././gcc/. -I../.././gcc/../include
-I../.././gcc/../libcpp/include  -I../.././gcc/../libdecnumber -I../libdecnumber
-I/usr/mpkg/include -I/usr/mpkg/include -DENABLE_LLVM -I/usr/mpkg/include 
-DNDEBUG  -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS
-DLLVM_VERSION_INFO='"SVN r58935-MirPorts-1"'  
../.././gcc/dummy-checksum.c -o dummy-checksum.o
c++ -c -g -O2 -DIN_GCC -W -Wall -Wwrite-strings -pedantic -Wno-long-long
-Wno-variadic-macros -Wmissing-format-attribute -DHAVE_CONFIG_H -Wno-unused
-DTARGET_NAME=\"i386-ecce-mirbsd10\" -I. -I. -I../.././gcc
-I../.././gcc/. -I../.././gcc/../include -I../.././gcc/../libcpp/include 
-I../.././gcc/../libdecnumber -I../libdecnumber -I/usr/mpkg/include
-I/usr/mpkg/include -DENABLE_LLVM -I/usr/mpkg/include  -DNDEBUG  -D_GNU_SOURCE
-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS
-DLLVM_VERSION_INFO='"SVN r58935-MirPorts-1"'   -I. -I.
-I../.././gcc -I../.././gcc/. -I../.././gcc/../include
-I../.././gcc/../libcpp/include  -I../.././gcc/../libdecnumber -I../libdecnumber
-I/usr/mpkg/include -I/usr/mpkg/include ../.././gcc/llvm-main.cpp -o llvm-main.o
cc1plus: error: unrecognized command line option
"-Wno-variadic-macros"
gmake[3]: *** [llvm-main.o] Error 1
gmake[3]: Leaving directory
`/usr/ports/lang/llvm-gcc/w-llvm-gcc4.2-58935-1/llvm-gcc4.2/host-i386-ecce-mirbsd10/gcc'
gmake[2]: *** [all-stage2-gcc] Error 2
gmake[2]: Leaving directory
`/usr/ports/lang/llvm-gcc/w-llvm-gcc4.2-58935-1/llvm-gcc4.2'
gmake[1]: *** [stage2-bubble] Error 2
gmake[1]: Leaving directory
`/usr/ports/lang/llvm-gcc/w-llvm-gcc4.2-58935-1/llvm-gcc4.2'
gmake: *** [all] Error 2
*** Error code 2

Stop in /usr/ports/lang/llvm-gcc (line 2263 of
/usr/ports/infrastructure/mk/bsd.port.mk).

bye,
//mirabilos
-- 
Sometimes they [people] care too much: pretty printers [and syntax highligh-
ting, d.A.] mechanically produce pretty output that accentuates irrelevant
detail in the program, which is as sensible as putting all the prepositions
in English text in bold font.	-- Rob Pike in "Notes on Programming in
C"