Re: [RFC] Replicate src dir in build dir

[Pedro Alves <palves@redhat.com>]

On 10/03/2017 09:02 PM, Pedro Alves wrote:
> On 09/29/2017 08:23 PM, Yao Qi wrote:
> 
>> > 
>> > I tested this patch by build gdb for each different target triplets
>> > respectively,
>> > 
>> > aarch64-elf aarch64-rtems aarch64-freebsd aarch64-linux alpha-elf
>> > alpha-linux alpha-netbsd alpha-openbsd arm-elf arm-wince-pe arm-linux
>> > arm-netbsd arm-symbianelf avr cris-elf frv-elf h8300-elf i386-elf
>> > i386-darwin i386-dicos i386-freebsd i386-netbsdelf i386-openbsd
>> > i386-nto i386-solaris i386-linux i386-gnu i386-cygwin i386-mingw32
>> > i386-go32 ia64-linux-gnu ia64-vms lm32-elf m32c-elf m32r-elf m32r-linux
>> > m68hc11-elf m68k-elf m68k-linux m68k-netbsd m68k-openbsd m88k-openbsd
>> > mep-elf microblaze-xilinx-elf microblaze-linux-gnu mips-elf moxie-elf
>> > ms1-elf nios2-elf nios2-linux-gnu hppa-elf hppa-linux hppa-netbsd
>> > hppa-openbsd powerpc-eabi powerpc-freebsd powerpc-netbsd powerpc-openbsd
>> > powerpc-linux powerpc-lynx178 rl78-elf rx-elf s390-linux-gnu score-elf
>> > sh-elf sh-linux sh-openbsd sh64-elf sh64-linux sh64-openbsd sparc64-linux
>> > sparc-linux sparc-freebsd sparc64-freebsd sparc-netbsd sparc64-netbsd
>> > sparc-openbsd sparc64-openbsd spu-elf tic6x-elf tic6x-uclinux v850-elf
>> > vax-netbsd vax-openbsd x86_64-linux-gnu x86_64-darwin x86_64-dicos
>> > x86_64-elf x86_64-freebsd x86_64-mingw32 x86_64-netbsd x86_64-openbsd
>> > x86_64-rtems xstormy16-elf xtensa-elf xtensa-linux
> OOC, this wasn't with gdb/gdb_buildall.sh, was it?
> 

BTW, I was thinking how you don't really need to build gdb to test this.

All you need is to make sure that gdb_target_obs is the same list of
objects before and after the patch.  So you could drop this script
in gdb/ , and call it for each for the triplets above, before and
after the patch, and diff the output.

~~~
$ cat test-configure.tgt
set -e

targ=$1

if [ $targ == "" ]; then
   echo "no target specified"
   exit 1
fi

source ./configure.tgt
echo "target: $targ"
objs=$(echo $gdb_target_obs | sort -u)
echo "gdb_target_obs: $objs"
~~~

$ ./test-configure.tgt i686-unknown-linux-gnu
target: i686-unknown-linux-gnu
gdb_target_obs: i386-tdep.o i386.o i386-linux-tdep.o glibc-tdep.o i387-tdep.o solib-svr4.o symfile-mem.o linux-tdep.o linux-record.o

That's going to be way faster...

Might be worth it to add something like this to the tree.

Thanks,
Pedro Alves