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Build compiler for maximum debugging (-g -O0)
- From: Oliver Kellogg <okellogg at users dot sourceforge dot net>
- To: gcc-help at gcc dot gnu dot org
- Date: Sun, 16 Dec 2007 01:55:35 +0100
- Subject: Build compiler for maximum debugging (-g -O0)
Hi,
http://gcc.gnu.org/install/build.html says:
> If you wish to use non-default GCC flags when compiling the stage2 and
> stage3 compilers, set BOOT_CFLAGS on the command line when doing
> `make'.
Using bash as my shell, I tried like this:
$ export BOOT_CFLAGS="-g"
$ make
but I seem to still have got a "-O2" in the compilation of the installed
compiler (on peeking around in gnat1 loaded into gdb, I often get
"value was optimized away".)
What is the correct way to get the installed compiler compiled with -g -O0
for fullest possible debugging ?
Thanks,
Oliver