Thread: Is there any way to disable compiler optimization and enable debug?
HI,<br /> I would like to debug PG because I have a problem when I run initdb, and I have question about the configure file.<br/><br />when I used the command below to config PG, it was only built with debugging symbols (-g) and O2 compileroptimization which would lead to execute order not match the source code order.<br /> ./configure --enable-debug--enable-depend --enable-cassert --prefix=/home/pgsql/pgsql<br /><br />then I export CFLAGS=O0, but it stillcouldn't work. <br />I read a little about confiqure file and find out that CFLAGS is unset in confiqure.<br /> andCFLAGS is also control by global variable: ac_env_CFLAGS_set and ac_env_CFLAGS_value.<br /><br />but i do not know howi could pass ac_env_CFLAGS_set and ac_env_CFLAGS_value to the configure file.<br /><br />by now, I replace all the O2flag to O0 in configure file to resolve the debug source code order problem temporary.<br /><br />Is there any other wayto disable compiler optimization and enable debug?<br /><br />Thank you for help.<br />
On 04/08/2012 01:42 PM, clover white wrote: > HI, > I would like to debug PG because I have a problem when I run initdb, > and I have question about the configure file. > > when I used the command below to config PG, it was only built with > debugging symbols (-g) and O2 compiler optimization which would lead > to execute order not match the source code order. > ./configure --enable-debug --enable-depend --enable-cassert > --prefix=/home/pgsql/pgsql > > then I export CFLAGS=O0, but it still couldn't work. > I read a little about confiqure file and find out that CFLAGS is > unset in confiqure. > and CFLAGS is also control by global variable: ac_env_CFLAGS_set and > ac_env_CFLAGS_value. > > but i do not know how i could pass ac_env_CFLAGS_set and > ac_env_CFLAGS_value to the configure file. > > by now, I replace all the O2 flag to O0 in configure file to resolve > the debug source code order problem temporary. > > Is there any other way to disable compiler optimization and enable debug? > > Thank you for help. Try: CFLAGS=-O0 ./configure --enable-debug .... cheers andrew
On sön, 2012-04-08 at 14:47 -0400, Andrew Dunstan wrote: > Try: > > CFLAGS=-O0 ./configure --enable-debug .... Better yet: ./configure CFLAGS=-O0 --enable-debug ....