Re: 4.2.2 bootstrap fails on sparc-sun-solaris2.8

[Brian Dessent <brian at dessent dot net>]

Dennis Clarke wrote:

>   http://www.blastwave.org/dclarke/gcc-4.2.2/gcc-4.2.2-bootstrap-failure.log
> 
>   Was there some sort of a significant change between GCC 4.2.1 and GCC
> 4.2.2 which means that the exact same machine and software environment
> would build GCC 4.2.1 but fail with GCC 4.2.2 ?
> 
>   Or am I missing something obvious ?

The reason for the failure is that somehow the CFLAGS for the bootstrap
Sun compiler are getting passed to the just-built xgcc during building
of libgcc.  I suspect an environmental problem.  Do you have
CFLAGS_FOR_TARGET set by any chance?  

>From gcc/Makefile.in:

LIBGCC2_CFLAGS = -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS)
$(TARGET_LIBGCC2_CFLAGS) \
                 $(LIBGCC2_DEBUG_CFLAGS) $(GTHREAD_FLAGS) \
                 -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED \
                 $(INHIBIT_LIBC_CFLAGS)

...where GCC_CFLAGS is:

GCC_CFLAGS=$(CFLAGS_FOR_TARGET) $(INTERNAL_CFLAGS) $(X_CFLAGS)
$(T_CFLAGS) $(LOOSE_WARN) -Wold-style-definition $($@-warn) -isystem
./include $(TCFLAGS)

...and:

INTERNAL_CFLAGS = -DIN_GCC @CROSS@

The actual expansion of all this is:

/opt/build/gcc-4.2.2-build/./gcc/xgcc
-B/opt/build/gcc-4.2.2-build/./gcc/
-B/export/home/dclarke/local/sparc-sun-solaris2.8/bin/
-B/export/home/dclarke/local/sparc-sun-solaris2.8/lib/ -isystem
/export/home/dclarke/local/sparc-sun-solaris2.8/include -isystem
/export/home/dclarke/local/sparc-sun-solaris2.8/sys-include -O2  -O2
-xstrconst -xildoff -xarch=v7 -xcode=pic32 -xlibmieee -xlibmil -Xa
-xregs=no%appl  -DIN_GCC    -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC
-g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I.
-I/opt/build/gcc-4.2.2/gcc -I/opt/build/gcc-4.2.2/gcc/.
-I/opt/build/gcc-4.2.2/gcc/../include
-I/opt/build/gcc-4.2.2/gcc/../libcpp/include
-I/export/home/dclarke/local/include
-I/export/home/dclarke/local/include
-I/opt/build/gcc-4.2.2/gcc/../libdecnumber -I../libdecnumber -DL_muldi3 
-c /opt/build/gcc-4.2.2/gcc/libgcc2.c -o libgcc/./_muldi3.o

Therefore it looks like somehow CFLAGS_FOR_TARGET="-O2 -xstrconst
-xildoff -xarch=v7 -xcode=pic32 -xlibmieee -xlibmil -Xa -xregs=no%appl"
which if true is certainly bogus, because CFLAGS_FOR_TARGET should not
contain flags for the bootstrap compiler, as it's what the newly-built
gcc uses when building target libraries, and those are not gcc options. 
Check your environment for stray values.

Brian