* compiling gcc in debug
@ 2009-04-06 14:17 Vincent R.
2009-04-06 14:24 ` Georg-Johann Lay
0 siblings, 1 reply; 2+ messages in thread
From: Vincent R. @ 2009-04-06 14:17 UTC (permalink / raw)
To: gcc-help
Hi,
When debugging gcc, debugger sometimes seems mad because it jumps from one
place to another
maybe due to the fact that some functions are inlined.
How can I build a gcc in debug mode id without -O2 ?
In gcc Makefile I can see that :
CFLAGS_FOR_BUILD = -g -O2
CXXFLAGS_FOR_BUILD = -g -O2
BOOT_CFLAGS= -g -O2
Maybe I need to pass some flags to configure ?
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: compiling gcc in debug
2009-04-06 14:17 compiling gcc in debug Vincent R.
@ 2009-04-06 14:24 ` Georg-Johann Lay
0 siblings, 0 replies; 2+ messages in thread
From: Georg-Johann Lay @ 2009-04-06 14:24 UTC (permalink / raw)
To: Vincent R.; +Cc: gcc-help
Vincent R. schrieb:
> Hi,
>
> When debugging gcc, debugger sometimes seems mad because it jumps from one
> place to another
> maybe due to the fact that some functions are inlined.
> How can I build a gcc in debug mode id without -O2 ?
>
> In gcc Makefile I can see that :
>
> CFLAGS_FOR_BUILD = -g -O2
> CXXFLAGS_FOR_BUILD = -g -O2
> BOOT_CFLAGS= -g -O2
>
> Maybe I need to pass some flags to configure ?
You can use make cc1 CFLAGS='-O0 -g' in gcc directory, resp. for cc1plus.
It is also helpful to strip the #line notes from the generated C-files
(insn-emit.c, insn-recog.c, ...), because these notes confuse the
debugger as they point to md.
Georg-Johann
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2009-04-06 14:17 compiling gcc in debug Vincent R.
2009-04-06 14:24 ` Georg-Johann Lay
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