Re: Use move-if-change on macro_list dependency

[Geoffrey Keating <geoffk at apple dot com>]

On 15/11/2004, at 7:56 AM, Nathan Sidwell wrote:

> Geoffrey Keating wrote:
> > Dan Berlin said
> > > Every time i do "make restage1", it reruns fixincludes.
> > >
> > > According to Steven Bosscher, if you change any single source
> > > file. fixincludes is now rerun.
> > I think this should fix it.
> > Tested by 'make bootstrap' on powerpc-darwin.
> this patch is exposing some parallel bootstrap problem on
> powerpc64-unknown-linux-gnu.
> ...
> make[4]: Entering directory `/scratch/nathan/ppc64/build/gcc'
> echo | ./xgcc -B./ -B/usr/local/powerpc64-unknown-linux-gnu/bin/ 
> -isystem /usr/local/powerpc64-unknown-linux-gnu/include -isystem 
> /usr/local/powerpc64-unknown-linux-gnu/sys-include 
> -L/scratch/nathan/ppc64/build/gcc/../ld -E -dM - | \
>   sed -n 's/^#define \([^_][a-zA-Z0-9_]*\).*/\1/p ; \
>         s/^#define \(_[^_A-Z][a-zA-Z0-9_]*\).*/\1/p' | \
>   sort -u > tmp-macro_list
> echo | ./xgcc -B./ -B/usr/local/powerpc64-unknown-linux-gnu/bin/ 
> -isystem /usr/local/powerpc64-unknown-linux-gnu/include -isystem 
> /usr/local/powerpc64-unknown-linux-gnu/sys-include 
> -L/scratch/nathan/ppc64/build/gcc/../ld -E -dM - | \
>   sed -n 's/^#define \([^_][a-zA-Z0-9_]*\).*/\1/p ; \
>         s/^#define \(_[^_A-Z][a-zA-Z0-9_]*\).*/\1/p' | \
>   sort -u > tmp-macro_list
> /bin/sh /home/nathan/egcs/ppc64/gcc/gcc/../move-if-change 
> tmp-macro_list macro_list
> macro_list is unchanged
> ./xgcc -B./ -B/usr/local/powerpc64-unknown-linux-gnu/bin/ -isystem 
> /usr/local/powerpc64-unknown-linux-gnu/include -isystem 
> /usr/local/powerpc64-unknown-linux-gnu/sys-include 
> -L/scratch/nathan/ppc64/build/gcc/../ld -O2 -DIN_GCC    -W -Wall 
> -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes 
> -Wold-style-definition  -isystem ./include  -I. -I32 
> -I/home/nathan/egcs/ppc64/gcc/gcc -I/home/nathan/egcs/ppc64/gcc/gcc/32 
> -I/home/nathan/egcs/ppc64/gcc/gcc/../include 
> -I/home/nathan/egcs/ppc64/gcc/gcc/../libcpp/include  -m32 -fPIC 
> -mstrict-align -g0 -finhibit-size-directive -fno-inline-functions 
> -fno-exceptions -fno-zero-initialized-in-bss -fno-unit-at-a-time -fPIC 
> -msdata=none \
>    -c /home/nathan/egcs/ppc64/gcc/gcc/crtstuff.c -DCRT_BEGIN 
> -DCRTSTUFFS_O \
>   -o 32/crtbeginS.o
> /bin/sh /home/nathan/egcs/ppc64/gcc/gcc/../move-if-change 
> tmp-macro_list macro_list
> cmp: tmp-macro_list: No such file or directory
> mv: cannot stat `tmp-macro_list': No such file or directory
> make[4]: *** [macro_list] Error 1

That's very strange.  The rule is running twice simultaneously; I 
thought that make didn't permit that in a single make invocation.

The 'tmp-<foo>' construct is used in many other places in the Makefile, 
and it seems to work there.

Could you try to work out more of what's going on?

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