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

[Thorsten Glaser]

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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