[Bug bootstrap/25435] New: stage build no longer works

[Bug bootstrap/25435] New: stage build no longer works

[hjl at lucon dot org]

I used to be able to do

# cd gcc
# make unstage1
# make restage1

But now ./prev-gcc/xgcc is used to rebuild stage 1 compiler, not the
system compiler.


-- 
           Summary: stage build no longer works
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl at lucon dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[hjl at lucon dot org]

------- Comment #1 from hjl at lucon dot org  2005-12-16 07:22 -------
It is very very annoying now. I can no longer do

# cd gcc
# make restage3

I got

...
+ echo stage3_build
make LANGUAGES="c gcov gcov-dump c++ fortran java objc" BOOT_CFLAGS="-g -O2"
stage3_build
make[1]: Entering directory
`/export/build/gnu/gcc-blended/build-x86_64-linux/stage3-gcc'
make CC="/export/build/gnu/gcc-blended/build-x86_64-linux/./prev-gcc/xgcc
-B/export/build/gnu/gcc-blended/build-x86_64-linux/./prev-gcc/
-B/usr/gcc-4.2-blended/x86_64-unknown-linux-gnu/bin/"
libdir=/usr/gcc-4.2-blended/lib LANGUAGES="c " \
        CFLAGS="-g  -DENABLE_CHECKING -DENABLE_ASSERT_CHECKING" \
        MAKEINFO="makeinfo --split-size=5000000 --split-size=5000000"
MAKEINFOFLAGS="--no-split" \
...
/export/build/gnu/gcc-blended/build-x86_64-linux/./prev-gcc/xgcc
-B/export/build/gnu/gcc-blended/build-x86_64-linux/./prev-gcc/
-B/usr/gcc-4.2-blended/x86_64-unknown-linux-gnu/bin/ -c   -g  -DENABLE_CHECKING
-DENABLE_ASSERT_CHECKING -DIN_GCC   -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long
-Wno-variadic-macros -Wold-style-definition -Wmissing-format-attribute -Werror 
  -DHAVE_CONFIG_H -I. -I. -I/export/gnu/src/gcc-blended/gcc/gcc
-I/export/gnu/src/gcc-blended/gcc/gcc/.
-I/export/gnu/src/gcc-blended/gcc/gcc/../include
-I/export/gnu/src/gcc-blended/gcc/gcc/../libcpp/include 
-I/export/gnu/src/gcc-blended/gcc/gcc/../libdecnumber    \
        /export/gnu/src/gcc-blended/gcc/gcc/config/i386/i386.c -o i386.o
...
  main.o  libbackend.a ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a
../libcpp/libcpp.a   ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a
libbackend.a(i386.o): In function
`VEC_edge_base_index':/export/gnu/src/gcc-blended/gcc/gcc/basic-block.h:147:
undefined reference to `vec_assert_fail'
collect2: ld returned 1 exit status
make[2]: *** [cc1-dummy] Error 1

The wrong CFLAGS was used.


-- 

hjl at lucon dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bonzini at gnu dot org
           Severity|normal                      |major


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[hjl at lucon dot org]

------- Comment #2 from hjl at lucon dot org  2005-12-16 07:37 -------
I made a change to i386.c. I just want to rebuild the final compiler with the
stage 2 compiler. I don't want to rebootstrap the whole gcc. What should I do?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[paolo dot bonzini at lu dot unisi dot ch]

------- Comment #3 from paolo dot bonzini at lu dot unisi dot ch  2005-12-16 08:02 -------
Subject: Re:  stage build no longer works

hjl at lucon dot org wrote:

>------- Comment #2 from hjl at lucon dot org  2005-12-16 07:37 -------
>I made a change to i386.c. I just want to rebuild the final compiler with the
>stage 2 compiler. I don't want to rebootstrap the whole gcc. What should I do?
>  
>
You can do "make all-stage3" (which is the new name of restageN).  Or 
just do "make" which will do the equivalent of a bubblestrap (it does 
not recompile everything, but it does percolate the change through the 
whole set of stages, so that you do not get spurious comparison failures).

Paolo


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[bonzini at gnu dot org]

------- Comment #4 from bonzini at gnu dot org  2006-01-04 08:50 -------
H.J., can we close this?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[bonzini at gnu dot org]

-- 

bonzini at gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[hjl at lucon dot org]

------- Comment #5 from hjl at lucon dot org  2006-03-21 15:09 -------
When I make a backend change, "make" at the top level still tries to rebuild
all libraries, even though nothing in library will be recompiled. When Java
is enabled, it may take a while just to check if libjava needs to be
recompiled.
Is there an option to say I only want to rebuild compiler, not libraries?


-- 

hjl at lucon dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|0000-00-00 00:00:00         |2006-03-21 15:09:33
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[paolo dot bonzini at lu dot unisi dot ch]

------- Comment #6 from paolo dot bonzini at lu dot unisi dot ch  2006-03-21 15:53 -------
Subject: Re:  stage build no longer works

hjl at lucon dot org wrote:
> ------- Comment #5 from hjl at lucon dot org  2006-03-21 15:09 -------
> When I make a backend change, "make" at the top level still tries to rebuild
> all libraries, even though nothing in library will be recompiled. When Java
> is enabled, it may take a while just to check if libjava needs to be
> recompiled.
> Is there an option to say I only want to rebuild compiler, not libraries?
>   
One particular stage: "make all-stageN"
All stages: "make stageN-bubble"

(usually N=3 of course)

All this is now documented in gcc's manual.

Paolo


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[hjl at lucon dot org]

------- Comment #7 from hjl at lucon dot org  2006-03-21 16:27 -------
Fixed.


-- 

hjl at lucon dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |UNCONFIRMED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435

[Bug bootstrap/25435] stage build no longer works

[hjl at lucon dot org]

------- Comment #8 from hjl at lucon dot org  2006-03-21 16:27 -------
Fixed.


-- 

hjl at lucon dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25435