[U-Boot-Users] [PATCH 1/6] AVR32: Use -g instead of -gstabs in AFLAGS_DEBUG

[Wolfgang Denk]

In message <1defaf580610251315l7a3ef385x73628d836daa2238 at mail.gmail.com> you wrote:
>
> If you look at the as.texinfo file tagged as binutils_2_15, the -g
> option is only documented for certain targets, e.g. Alpha and MIPS:

I see.

> Yes, "gcc -g" should always work. However, in Matthew's example, the
> command line also included "-Wa,-g", which injects the -g option

"-Wa,-g" is only set in AFLAGS_DEBUG.

> directly into the command line for the assembler, and that seems to
> work only for 2.16 and later (or maybe not even that in case of ARM.)

But we've been using this for a long, long time.  It's  been  working
fine with ELDK 3.x (GCC-3.3.3 / binutils 2.14) on ARM, MIPS and PPC.

> I wonder if gcc will automatically pass the correct -g<whatever>
> option to gas when it's given the -g option? If that's the case, I
> suppose we could simply remove -Wa,-g and everyone will be happy...

I think it does:

-> arm-linux-gcc -v -g -c foo.s 
Using built-in specs.
Target: arm-linux
Configured with: /opt/eldk/build/arm-2006-02-19/work/usr/src/denx/BUILD/crosstool-0.35/build/gcc-4.0.0-glibc-2.3.5-eldk/arm-linux/gcc-4.0.0/configure --target=arm-linux --host=i686-host_pc-linux-gnu --prefix=/var/tmp/eldk.Ks4ZhN/usr/crosstool/gcc-4.0.0-glibc-2.3.5-eldk/arm-linux --with-headers=/var/tmp/eldk.Ks4ZhN/usr/crosstool/gcc-4.0.0-glibc-2.3.5-eldk/arm-linux/arm-linux/include --with-local-prefix=/var/tmp/eldk.Ks4ZhN/usr/crosstool/gcc-4.0.0-glibc-2.3.5-eldk/arm-linux/arm-linux --disable-nls --enable-threads=posix --enable-symvers=gnu --enable-__cxa_atexit --enable-languages=c,c++ --enable-shared --enable-c99 --enable-long-long
Thread model: posix
gcc version 4.0.0 (DENX ELDK 4.0 4.0.0)
 /opt/eldk-4.0-2006-02-19/usr/bin/../lib/gcc/arm-linux/4.0.0/../../../../arm-linux/bin/as --gdwarf2 -mcpu=arm9 -mfpu=softvfp -o foo.o foo.s

See the "--gdwarf2" passed to as.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
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